{"id":8846,"date":"2020-12-04T10:43:25","date_gmt":"2020-12-04T10:43:25","guid":{"rendered":"http:\/\/besafenet.dgmedialink.com\/valanghe\/"},"modified":"2024-06-11T14:16:35","modified_gmt":"2024-06-11T13:16:35","slug":"avalanches","status":"publish","type":"page","link":"https:\/\/besafenet.net\/it\/hazards\/avalanches\/","title":{"rendered":"Valanghe"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"8846\" class=\"elementor elementor-8846 elementor-3925\">\n\t\t\t\t\t\t<div class=\"elementor-inner\">\n\t\t\t\t<div class=\"elementor-section-wrap\">\n\t\t\t\t\t\t\t\t\t<section class=\"has_eae_slider elementor-section elementor-top-section elementor-element elementor-element-565ce1b heading-section elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"565ce1b\" data-element_type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t\t\t<div class=\"elementor-row\">\n\t\t\t\t\t<div class=\"has_eae_slider elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-0b9416e\" data-id=\"0b9416e\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-column-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-82f3332 elementor-widget elementor-widget-heading\" data-id=\"82f3332\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Pericolosit\u00e0 Naturali<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f72c318 elementor-widget elementor-widget-heading\" data-id=\"f72c318\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">Valanghe<\/h1>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"has_eae_slider elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-4aac7bb\" data-id=\"4aac7bb\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-column-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-17bd13b elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"17bd13b\" data-element_type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9febfbc small-txt elementor-widget elementor-widget-text-editor\" data-id=\"9febfbc\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-text-editor elementor-clearfix\">\n\t\t\t\t<p>Preparato da\u00a0<em>AFEM &#8211; European Natural Disasters Training Centre (Ankara, Turkey) &amp; the Editorial Board<\/em><\/p>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-cba8b59 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"cba8b59\" data-element_type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"has_eae_slider elementor-section elementor-top-section elementor-element elementor-element-9fc1050 elementor-section-height-min-height elementor-section-boxed elementor-section-height-default elementor-section-items-middle\" data-id=\"9fc1050\" data-element_type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t\t\t<div class=\"elementor-row\">\n\t\t\t\t\t<div class=\"has_eae_slider elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-3e33673\" data-id=\"3e33673\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-column-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-1d556b3 elementor-widget elementor-widget-image\" data-id=\"1d556b3\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-image\">\n\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"320\" src=\"https:\/\/besafenet.net\/wp-content\/uploads\/2020\/11\/avalanches-1024x320.jpg\" class=\"attachment-large size-large wp-image-3931\" alt=\"\" srcset=\"https:\/\/besafenet.net\/wp-content\/uploads\/2020\/11\/avalanches-1024x320.jpg 1024w, https:\/\/besafenet.net\/wp-content\/uploads\/2020\/11\/avalanches-300x94.jpg 300w, https:\/\/besafenet.net\/wp-content\/uploads\/2020\/11\/avalanches-768x240.jpg 768w, https:\/\/besafenet.net\/wp-content\/uploads\/2020\/11\/avalanches-1536x480.jpg 1536w, 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fill=\"#fff\"><\/path><\/svg><\/span><\/a><a aria-label=\"Email\" class=\"heateor_sss_email\" href=\"https:\/\/besafenet.net\/it\/wp-json\/wp\/v2\/pages\/8846\" onclick=\"event.preventDefault();window.open('mailto:?subject=' + decodeURIComponent('Valanghe').replace('&', '%26') + '&body=https%3A%2F%2Fbesafenet.net%2Fit%2Fwp-json%2Fwp%2Fv2%2Fpages%2F8846', '_blank')\" title=\"Email\" rel=\"nofollow noopener\" style=\"font-size:32px!important;box-shadow:none;display:inline-block;vertical-align:middle\"><span class=\"heateor_sss_svg\" style=\"background-color:#649a3f;width:35px;height:35px;display:inline-block;opacity:1;float:left;font-size:32px;box-shadow:none;display:inline-block;font-size:16px;padding:0 4px;vertical-align:middle;background-repeat:repeat;overflow:hidden;padding:0;cursor:pointer;box-sizing:content-box\"><svg style=\"display:block;\" focusable=\"false\" aria-hidden=\"true\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"100%\" height=\"100%\" viewBox=\"-.75 -.5 36 36\"><path d=\"M 5.5 11 h 23 v 1 l -11 6 l -11 -6 v -1 m 0 2 l 11 6 l 11 -6 v 11 h -22 v -11\" stroke-width=\"1\" fill=\"#fff\"><\/path><\/svg><\/span><\/a><\/div><div class=\"heateorSssClear\"><\/div><\/div><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-66c9d68 elementor-widget elementor-widget-text-editor\" data-id=\"66c9d68\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-text-editor elementor-clearfix\">\n\t\t\t\t<p>Una valanga \u00e8 un rapido flusso di neve lungo un versante.<\/p>\n<p>In aree montuose, le valanghe sono tra le principali minacce alla vita ed alle strutture a causa del loro potere distruttivo che deriva dalla loro capacit\u00e0 di trasportare rapidamente un\u2019enorme massa di neve per lunghe distanze. Possono essere generate sia da fenomeni naturali, sia dall\u2019azione dell\u2019uomo (deforestazione, sport invernali ecc.).<\/p>\n<p>Le valanghe possono essere classificate, in particolare, in base a:<\/p>\n<ul>\n<li>La causa: naturale o antropica<\/li>\n<li>La tipologia di neve: umida o secca<\/li>\n<li>Grado di scivolosit\u00e0: al di sopra di una precedente superficie del manto nevoso o sulla precedente superficie del manto nevoso.<\/li>\n<\/ul>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-42ddedb elementor-widget elementor-widget-accordion\" data-id=\"42ddedb\" data-element_type=\"widget\" data-widget_type=\"accordion.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-accordion\" role=\"tablist\">\n\t\t\t\t\t\t\t<div class=\"elementor-accordion-item\">\n\t\t\t\t\t<div id=\"elementor-tab-title-7011\" class=\"elementor-tab-title\" data-tab=\"1\" role=\"tab\" aria-controls=\"elementor-tab-content-7011\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon elementor-accordion-icon-left\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-closed\"><i class=\"fas fa-plus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-opened\"><i class=\"fas fa-minus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" href=\"\"> 1. Cos'\u00e8 una valanga?<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div id=\"elementor-tab-content-7011\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"1\" role=\"tabpanel\" aria-labelledby=\"elementor-tab-title-7011\"><p>\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"8378\" class=\"elementor elementor-8378 elementor-3951\">\n\t\t\t\t\t\t<div class=\"elementor-inner\">\n\t\t\t\t<div class=\"elementor-section-wrap\">\n\t\t\t\t\t\t\t\t\t<section class=\"has_eae_slider elementor-section elementor-top-section elementor-element elementor-element-db3dc22 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"db3dc22\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t\t\t<div class=\"elementor-row\">\n\t\t\t\t\t<div class=\"has_eae_slider elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-a881a66\" data-id=\"a881a66\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-column-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-2564016 elementor-widget elementor-widget-text-editor\" data-id=\"2564016\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-text-editor elementor-clearfix\">\n\t\t\t\t<p>Una valanga \u00e8 un rapido flusso di neve lungo un versante, innescato sia da cause naturali che antropiche. In aree di montagna, le valanghe rappresentano una tra le pi\u00f9 serie minacce alla vita delle persone ed ai loro beni come conseguenza del loro potere distruttivo che deriva dalla capacit\u00e0 di trasportare enormi masse di neve per distanze anche molto ampie.<\/p>\n<p>Tutte le valanghe mostrano elementi comuni.<\/p>\n<ul>\n<li>un innesco che determina la rottura istantanea del manto nevoso<\/li>\n<li>un\u2019area di distacco da cui si stacca il volume iniziale di neve<\/li>\n<li>una zona di esaurimento dove la valanga si arresta<\/li>\n<li>un deposito, costituito dalla massa di neve accumulata dalla valanga nel momento in cui si arresta.<\/li>\n<\/ul>\n<p>A volte, il deposito pu\u00f2 essere composto da un insieme incoerente di neve, ghiaccio, terreno, rocce e frammenti di vegetazione.<\/p>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9a371a3 elementor-widget elementor-widget-image\" data-id=\"9a371a3\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-image\">\n\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"495\" height=\"497\" src=\"https:\/\/besafenet.net\/wp-content\/uploads\/2020\/11\/aval1.jpg\" class=\"attachment-large size-large wp-image-3956\" alt=\"\" srcset=\"https:\/\/besafenet.net\/wp-content\/uploads\/2020\/11\/aval1.jpg 495w, https:\/\/besafenet.net\/wp-content\/uploads\/2020\/11\/aval1-300x300.jpg 300w, https:\/\/besafenet.net\/wp-content\/uploads\/2020\/11\/aval1-150x150.jpg 150w\" sizes=\"(max-width: 495px) 100vw, 495px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Figure 1 &#8211; Artificially triggered snow avalanche in Davos, Switzerland. Source: www.uvm.edu<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/p>\n<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-accordion-item\">\n\t\t\t\t\t<div id=\"elementor-tab-title-7012\" class=\"elementor-tab-title\" data-tab=\"2\" role=\"tab\" aria-controls=\"elementor-tab-content-7012\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon elementor-accordion-icon-left\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-closed\"><i class=\"fas fa-plus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-opened\"><i class=\"fas fa-minus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" href=\"\">2. Quali tipi di valanghe esistono?<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div id=\"elementor-tab-content-7012\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"2\" role=\"tabpanel\" aria-labelledby=\"elementor-tab-title-7012\"><p>\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"8380\" class=\"elementor elementor-8380 elementor-3962\">\n\t\t\t\t\t\t<div class=\"elementor-inner\">\n\t\t\t\t<div class=\"elementor-section-wrap\">\n\t\t\t\t\t\t\t\t\t<section class=\"has_eae_slider elementor-section elementor-top-section elementor-element elementor-element-abee547 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"abee547\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t\t\t<div class=\"elementor-row\">\n\t\t\t\t\t<div class=\"has_eae_slider elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-174acae\" data-id=\"174acae\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-column-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-dbe0035 elementor-widget elementor-widget-text-editor\" data-id=\"dbe0035\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-text-editor elementor-clearfix\">\n\t\t\t\t<p>Le valanghe vengono classificate in base alle loro caratteristiche morfologiche e sono stimate o in base al loro potenziale distruttivo od alla massa coinvolta nel movimento.<\/p>\n<p>Di seguito verranno presentate le tipologie di valanga sulla base delle loro propriet\u00e0 generali:<\/p>\n<ul>\n<li>Valanghe a lastroni<\/li>\n<li>Valanghe di neve incoerente<\/li>\n<li>Valanghe fangose<\/li>\n<li>Valanghe di neve secca e valanghe polverose<\/li>\n<\/ul>\n<p><u>VALANGHE A LASTRONI<\/u>: possono assumere nomi differenti in base al contenuto di umidit\u00e0 degli strati, all\u2019uso del suolo (roccia, suolo o alberi) ed alla profondit\u00e0 della frattura.<\/p>\n<p><em>Valanghe a lastroni di neve asciutta<\/em>: in questa tipologia \u00e8 presente uno strato di neve coesiva ed a bassa umidit\u00e0 (lastrone) al cui interno vi \u00e8 uno strato a debole resistenza meccanica in cui ha inizio la frattura. La frattura si propaga fino a determinare un isolamento del lastrone da ogni possibile supporto (fianchi, base, coronamento) e da qui la valanga ha inizio. Le densit\u00e0 dei lastroni possono andare, statisticamente, da 100 a 300 kg\/m<sup>3<\/sup>.<\/p>\n<p><em>Valanghe a lastroni di neve bagnata<\/em>: si verificano in seguito a tre possibili meccanismi: 1- aumento di carico dovuto a precipitazioni (pioggia), 2- decadimento della resistenza meccanica di uno strato interno al manto nevoso a causa della percolazione di acqua, 3- lubrificazione da parte dell\u2019acqua di una superficie di scorrimento, parzialmente o totalmente impermeabile all\u2019acqua. A volte, la frattura interessa l\u2019intero spessore del manto nevoso, ed a valanga avvenuta, il suolo o la roccia sottostanti possono affiorare. In questo caso si parla di \u201cvalanga di fondo\u201d.<\/p>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1261ff3 elementor-widget elementor-widget-image\" data-id=\"1261ff3\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-image\">\n\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"400\" height=\"316\" src=\"https:\/\/besafenet.net\/wp-content\/uploads\/2020\/11\/aval2.jpg\" class=\"attachment-large size-large wp-image-3967\" alt=\"\" srcset=\"https:\/\/besafenet.net\/wp-content\/uploads\/2020\/11\/aval2.jpg 400w, https:\/\/besafenet.net\/wp-content\/uploads\/2020\/11\/aval2-300x237.jpg 300w\" sizes=\"(max-width: 400px) 100vw, 400px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Figure 2 &#8211; Dry slab avalanche: the &#8220;crown&#8221; of the slab is the fracture cutting the snow pack on the left side of the picture. A small slab is still present just below the crown, while wider slabs are visible in front of the tree. Source: www.thekyrgyzstanplan.com<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-cc86488 elementor-widget elementor-widget-text-editor\" data-id=\"cc86488\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-text-editor elementor-clearfix\">\n\t\t\t\t<p><u>VALANGHE DI NEVE INCOERENTE<\/u>: la neve incoerente \u00e8 dotata di coesione debole se non nulla. Le valanghe di neve incoerente si formano sulla superficie del manto nevoso ed il loro movimento iniziale coinvolge proprio il primo spessore superficiale del manto stesso. Sono facilmente riconoscibili poich\u00e9 iniziano da un punto e formano, durante la discesa a valle, un tracciato di forma triangolare. Le valanghe naturali sono innescate da una locale perdita di coesione dovuta al metamorfismo dei grani di neve od all\u2019effetto del riscaldamento solare o della pioggia. Spesso hanno inizio vicino a rocce affioranti che trasmettono calore al manto nevoso adiacente determinandone la parziale fusione.<\/p>\n<p><em>Valanghe di neve incoerente asciutta<\/em>: si formano solitamente qualora si abbiano temperature dell\u2019aria particolarmente fredde ed assenza di vento, ovvero condizioni che determinano basse densit\u00e0 del manto nevoso superficiale.<\/p>\n<p><u>Valanghe di neve incoerente bagnata<\/u>: si originano a seguito di una rapida fusione della neve, causata dal riscaldamento del sole, dalla pioggia o dal trasferimento di calore da superfici relativamente pi\u00f9 calde.<\/p>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-27a9f06 elementor-widget elementor-widget-image\" data-id=\"27a9f06\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-image\">\n\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"665\" src=\"https:\/\/besafenet.net\/wp-content\/uploads\/2020\/11\/aval3.jpg\" class=\"attachment-large size-large wp-image-3972\" alt=\"\" srcset=\"https:\/\/besafenet.net\/wp-content\/uploads\/2020\/11\/aval3.jpg 600w, https:\/\/besafenet.net\/wp-content\/uploads\/2020\/11\/aval3-271x300.jpg 271w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Figure 3 &#8211; Wet loose snow avalanche, with its classic pear-shape, developing just below trees on a rock outcrop. The localized snow melting is probably occurring at dark surfaces, such as trees and rocks, favoring snow pack instability. The phenomenon is quite widespread in the area, as many other loose avalanches can be seen over the entire slope. Source: www.juneauempire.com<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ed07547 elementor-widget elementor-widget-text-editor\" data-id=\"ed07547\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-text-editor elementor-clearfix\">\n\t\t\t\t<p><u>VALANGHE FANGOSE<\/u>: in questa tipologia di valanga il flusso di neve \u00e8 simile al flusso di fango con un\u2019alta percentuale di acqua. Misure di densit\u00e0 effettuate nei depositi di valanghe fangose hanno mostrato valori anche superiori a 1000 kg\/m<sup>3<\/sup>, come conseguenza della composizione che tali depositi solitamente hanno, ovvero un insieme incoerente di neve, ghiaccio, acqua, detriti di roccia, suolo e vegetazione. Sono solitamente parzialmente o completamente saturi in acqua. La temperatura della neve \u00e8 prossima a 0\u00b0C. Le valanghe fangose hanno luogo principalmente alle alte latitudini, grazie alla rapida fusione che si verifica con l\u2019inizio della primavera, quando i raggi solari forniscono calore diretto al manto nevoso che per mesi \u00e8 stato soggetto a forti gradienti termici ed alla mancanza di radiazione solare. Molti esempi di questa tipologia di valanghe si possono trovare nella Norvegia settentrionale ed in Alaska.<\/p>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-964ab04 elementor-widget elementor-widget-image\" data-id=\"964ab04\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-image\">\n\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"525\" height=\"396\" src=\"https:\/\/besafenet.net\/wp-content\/uploads\/2020\/11\/aval4.jpg\" class=\"attachment-large size-large wp-image-3977\" alt=\"\" srcset=\"https:\/\/besafenet.net\/wp-content\/uploads\/2020\/11\/aval4.jpg 525w, https:\/\/besafenet.net\/wp-content\/uploads\/2020\/11\/aval4-300x226.jpg 300w\" sizes=\"(max-width: 525px) 100vw, 525px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Figura 4: La fotografia mostra una valanga fangosa che, dopo un percorso all&#8217;interno di un canalone, deposita il suo carico su di un cono detritico\/alluvionale, coperto di neve. Si notino i diversi &#8220;rami&#8221; che caratterizzano il deposito, creati dal flusso della valanga nel suo movimento verso valle: essi mostrano caratteri morfologici simili a quelli dei depositi delle colate detritiche. Causa principale di questa particolare morfologia deposizionale \u00e8 l&#8217;alto contenuto in acqua del carico nevoso. Fonte: www.unis.no<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f6ee353 elementor-widget elementor-widget-text-editor\" data-id=\"f6ee353\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-text-editor elementor-clearfix\">\n\t\t\t\t<p><u>VALANGHE DI NEVE SECCA E VALANGHE POLVEROSE<\/u>: queste tipologie di valanghe possono essere presenti qualora il contenuto di umidit\u00e0 sia basso, la densit\u00e0 della neve sia prossima a 100 kg\/m<sup>3<\/sup>\u00a0o inferiore, la temperatura della neve sia inferiore a 0\u00b0C e lo spessore del manto nevoso sia superiore al metro. Successivamente al distacco della valanga, si forma una nuvola polverosa contenente neve ed aria.<\/p>\n<p><em>Valanghe di neve secca<\/em>: questa tipologia di valanghe presenta un nucleo di neve densa alla base della massa nevosa in movimento. Si \u00e8 stimato che circa un terzo del volume del nucleo denso sia occupato da neve e che circa due terzi siano occupati da aria. Nella nuvola polverosa che pu\u00f2 svilupparsi al di sopra, solo l\u20191% del volume \u00e8 occupato da neve, mentre il restante 99% \u00e8 occupato da aria. Pertanto, la densit\u00e0 \u00e8 circa un ordine di grandezza superiore, nel nucleo denso, rispetto alla nuvola polverosa. Solitamente lo spessore del nucleo denso \u00e8 inferiore a 5 m, mentre quello della nuvola polverosa pu\u00f2 raggiungere alcune decine di metri. La decelerazione avviene in modo rapido in corrispondenza della zona di esaurimento della valanga.<\/p>\n<p><em>Valanghe polverose<\/em>: non presentano alcun nucleo denso al loro interno. Ogni valanga di neve polverosa, a notevole velocit\u00e0, pu\u00f2 essere caratterizzata da una nuvola polverosa, pertanto pu\u00f2 risultare difficile distinguere tra valanghe polverose e valanghe di neve secca. Per distinguerle occorre osservarne attentamente il deposito, gli effetti distruttivi o le caratteristiche di scorrimento per riconoscere la presenza o meno del nucleo denso. In una valanga polverosa, quasi tutta la massa risulta in sospensione e caratterizzata da dinamica turbolenta. Si originano spesso a seguito di crolli di ghiaccio sul manto nevoso, provenienti da cascate di ghiaccio sub-verticali. La loro velocit\u00e0 pu\u00f2 a volte superare quella delle valanghe di neve secca, ma poich\u00e9 la densit\u00e0 risulta minore, il loro potere distruttivo risulta inferiore.<\/p>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/p>\n<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-accordion-item\">\n\t\t\t\t\t<div id=\"elementor-tab-title-7013\" class=\"elementor-tab-title\" data-tab=\"3\" role=\"tab\" aria-controls=\"elementor-tab-content-7013\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon elementor-accordion-icon-left\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-closed\"><i class=\"fas fa-plus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-opened\"><i class=\"fas fa-minus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" href=\"\">3. Quali sono le cause delle valanghe?<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div id=\"elementor-tab-content-7013\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"3\" role=\"tabpanel\" aria-labelledby=\"elementor-tab-title-7013\"><p>\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"8382\" class=\"elementor elementor-8382 elementor-3983\">\n\t\t\t\t\t\t<div class=\"elementor-inner\">\n\t\t\t\t<div class=\"elementor-section-wrap\">\n\t\t\t\t\t\t\t\t\t<section class=\"has_eae_slider elementor-section elementor-top-section elementor-element elementor-element-9884ef2 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"9884ef2\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t\t\t<div class=\"elementor-row\">\n\t\t\t\t\t<div class=\"has_eae_slider elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-7250b3f\" data-id=\"7250b3f\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-column-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-d827710 elementor-widget elementor-widget-text-editor\" data-id=\"d827710\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-text-editor elementor-clearfix\">\n\t\t\t\t<p>Le valanghe avvengono quando gli sforzi, prodotti da agenti esterni all\u2019interno del manto nevoso, od al contatto tra esso ed il suolo, superano le resistenze al taglio, duttile ed a trazione del manto stesso. Alcune delle forze che agiscono nel manto nevoso possono essere facilmente determinate: per esempio il peso della neve, ma, al contrario, risulta molto difficile misurare le resistenze al taglio, duttile e a trazione interne al manto nevoso od al contatto fra esso ed il terreno. Tali resistenze variano in relazione alla tipologia dei cristalli di neve ed ai legami che si sviluppano tra essi. Le propriet\u00e0 termo-meccaniche dei cristalli di neve dipendono, a loro volta, dalle variazioni di temperatura e umidit\u00e0 che hanno subito.<\/p>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-28bcb04 elementor-widget elementor-widget-image\" data-id=\"28bcb04\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-image\">\n\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"768\" height=\"576\" src=\"https:\/\/besafenet.net\/wp-content\/uploads\/2020\/11\/aval5-768x576.jpg\" class=\"attachment-medium_large size-medium_large wp-image-3988\" alt=\"\" srcset=\"https:\/\/besafenet.net\/wp-content\/uploads\/2020\/11\/aval5-768x576.jpg 768w, https:\/\/besafenet.net\/wp-content\/uploads\/2020\/11\/aval5-300x225.jpg 300w, https:\/\/besafenet.net\/wp-content\/uploads\/2020\/11\/aval5-1024x768.jpg 1024w, https:\/\/besafenet.net\/wp-content\/uploads\/2020\/11\/aval5.jpg 1280w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Figure 5 &#8211; The so called &#8220;rutsch block test&#8221;, used to verify on site the degree of stability of the snow pack. Once a snow block has been created, a skier jumps on it: the more jumps needed to make the block slide, the more stable is the snow pack. Source: www.swissmountainleader.com<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1294a03 elementor-widget elementor-widget-image\" data-id=\"1294a03\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-image\">\n\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"768\" height=\"576\" src=\"https:\/\/besafenet.net\/wp-content\/uploads\/2020\/11\/3_why-768x576.jpg\" class=\"attachment-medium_large size-medium_large wp-image-3993\" alt=\"\" srcset=\"https:\/\/besafenet.net\/wp-content\/uploads\/2020\/11\/3_why-768x576.jpg 768w, https:\/\/besafenet.net\/wp-content\/uploads\/2020\/11\/3_why-300x225.jpg 300w, https:\/\/besafenet.net\/wp-content\/uploads\/2020\/11\/3_why-1024x768.jpg 1024w, https:\/\/besafenet.net\/wp-content\/uploads\/2020\/11\/3_why.jpg 1169w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Figure 6 &#8211; The analysis of the snow pack stratigraphy is a fundamental step in detecting its possible instability. Weak layers within the snow pack can be detected, which may favour future avalanche occurrence. Photo: A. Ghinoi.<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/p>\n<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-accordion-item\">\n\t\t\t\t\t<div id=\"elementor-tab-title-7014\" class=\"elementor-tab-title\" data-tab=\"4\" role=\"tab\" aria-controls=\"elementor-tab-content-7014\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon elementor-accordion-icon-left\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-closed\"><i class=\"fas fa-plus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-opened\"><i class=\"fas fa-minus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" href=\"\">4. Dove avvengono le valanghe?<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div id=\"elementor-tab-content-7014\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"4\" role=\"tabpanel\" aria-labelledby=\"elementor-tab-title-7014\"><p>\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"3999\" class=\"elementor elementor-3999\">\n\t\t\t\t\t\t<div class=\"elementor-inner\">\n\t\t\t\t<div class=\"elementor-section-wrap\">\n\t\t\t\t\t\t\t\t\t<section class=\"has_eae_slider elementor-section elementor-top-section elementor-element elementor-element-bda54ea elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"bda54ea\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t\t\t<div class=\"elementor-row\">\n\t\t\t\t\t<div class=\"has_eae_slider elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-fcb8138\" data-id=\"fcb8138\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-column-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-7ade7d6 elementor-widget elementor-widget-text-editor\" data-id=\"7ade7d6\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-text-editor elementor-clearfix\">\n\t\t\t\t<p>An avalanche typically occurs in mountainous terrain. Slopes flatter than 28 degrees or steeper than 55 degrees typically have a lower incidence of avalanche occurrence; likewise slopes with windward and sunny exposure have a lower incidence of avalanche hazard.<\/p><p>Generally, causes of avalanche formation can be found within 7 sets of factors (EVALUATION of all these factors is always required in snow avalanche prediction):<\/p><ul><li>Slope inclination<\/li><li>Snowpack conditions<\/li><li>Wind action<\/li><li>Slope direction<\/li><li>Temperature<\/li><li>Weak snow layers<\/li><li>Ground surface conditions<\/li><\/ul>\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b54eb66 elementor-widget elementor-widget-image\" data-id=\"b54eb66\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-image\">\n\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"422\" height=\"426\" src=\"https:\/\/besafenet.net\/wp-content\/uploads\/2020\/11\/4_0.bmp\" class=\"attachment-large size-large wp-image-4004\" alt=\"\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/p>\n<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-accordion-item\">\n\t\t\t\t\t<div id=\"elementor-tab-title-7015\" class=\"elementor-tab-title\" data-tab=\"5\" role=\"tab\" aria-controls=\"elementor-tab-content-7015\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon elementor-accordion-icon-left\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-closed\"><i class=\"fas fa-plus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-opened\"><i class=\"fas fa-minus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" href=\"\">5. Quali possono essere le conseguenze di un valanga?<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div id=\"elementor-tab-content-7015\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"5\" role=\"tabpanel\" aria-labelledby=\"elementor-tab-title-7015\"><p>\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"8386\" class=\"elementor elementor-8386 elementor-4010\">\n\t\t\t\t\t\t<div class=\"elementor-inner\">\n\t\t\t\t<div class=\"elementor-section-wrap\">\n\t\t\t\t\t\t\t\t\t<section class=\"has_eae_slider elementor-section elementor-top-section elementor-element elementor-element-5fcc211 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"5fcc211\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t\t\t<div class=\"elementor-row\">\n\t\t\t\t\t<div class=\"has_eae_slider elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-168fabe\" data-id=\"168fabe\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-column-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-ff40303 elementor-widget elementor-widget-text-editor\" data-id=\"ff40303\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-text-editor elementor-clearfix\">\n\t\t\t\t<p>La valanga \u00e8 un fenomeno nivo-meteorologico. Se tutti i fattori (meteorologici, topografici, il manto nevoso ecc.) che ne favoriscono lo sviluppo sono presenti, allora la valanga pu\u00f2 verificarsi. A seconda delle condizioni climatiche, i tempi di ritorno per una valanga possono andare da alcuni eventi l\u2019anno ad un evento in alcuni secoli.<\/p>\n<p>Le valanghe, a seconda della intensit\u00e0 (o magnitudo) con cui si manifestano, possono determinare danni pi\u00f9 o meno ingenti alle strutture ed infrastrutture antropiche e, in ultima istanza, anche la loro completa distruzione. Per questo, laddove elementi vulnerabili siano esposti al pericolo valanghivo, \u00e8 essenziale che la pianificazione territoriale valuti con attenzione il livello di pericolosit\u00e0 presente ed intervenga attraverso la predisposizione di misure di difesa rispetto agli eventi futuri. Le valanghe, inoltre, possono coinvolgere persone, determinandone il ferimento o, in caso estremo, la morte. Con sempre maggiore frequenza, le notizie riportano casi di persone ferite od uccise da valanghe da loro stesse provocate; ci\u00f2 avviene molto spesso in ambito sci-alpinistico, qualora uno o pi\u00f9 sciatori provochino la frattura del manto nevoso gi\u00e0 naturalmente instabile.<\/p>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-90df112 elementor-widget elementor-widget-image\" data-id=\"90df112\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-image\">\n\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"480\" src=\"https:\/\/besafenet.net\/wp-content\/uploads\/2020\/11\/aval7.jpg\" class=\"attachment-large size-large wp-image-4015\" alt=\"\" srcset=\"https:\/\/besafenet.net\/wp-content\/uploads\/2020\/11\/aval7.jpg 640w, https:\/\/besafenet.net\/wp-content\/uploads\/2020\/11\/aval7-300x225.jpg 300w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Figure 7: Avalanche accident: a skier has been caught by an avalanche, but luckily his companions could free him from the heavily compacted snow that buried him. Source: www.pistehors.com<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-abd07b3 elementor-widget elementor-widget-image\" data-id=\"abd07b3\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-image\">\n\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"448\" src=\"https:\/\/besafenet.net\/wp-content\/uploads\/2020\/11\/aval8.jpg\" class=\"attachment-large size-large wp-image-4020\" alt=\"\" srcset=\"https:\/\/besafenet.net\/wp-content\/uploads\/2020\/11\/aval8.jpg 640w, https:\/\/besafenet.net\/wp-content\/uploads\/2020\/11\/aval8-300x210.jpg 300w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Figure 8 &#8211; The avalanche disaster of Galtuer, Austria, occurred on the 20th January 1999, caused by severe snow storms that heavily increased the snow load on the slopes, favoring widespread snow pack instability. Source: www.wz-newsline.de<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/p>\n<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-accordion-item\">\n\t\t\t\t\t<div id=\"elementor-tab-title-7016\" class=\"elementor-tab-title\" data-tab=\"6\" role=\"tab\" aria-controls=\"elementor-tab-content-7016\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon elementor-accordion-icon-left\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-closed\"><i class=\"fas fa-plus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-opened\"><i class=\"fas fa-minus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" href=\"\">6. I comportamenti umani possono influenzare le cause delle valanghe?<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div id=\"elementor-tab-content-7016\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"6\" role=\"tabpanel\" aria-labelledby=\"elementor-tab-title-7016\"><p>\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"8390\" class=\"elementor elementor-8390 elementor-4037\">\n\t\t\t\t\t\t<div class=\"elementor-inner\">\n\t\t\t\t<div class=\"elementor-section-wrap\">\n\t\t\t\t\t\t\t\t\t<section class=\"has_eae_slider elementor-section elementor-top-section elementor-element elementor-element-18670cc elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"18670cc\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t\t\t<div class=\"elementor-row\">\n\t\t\t\t\t<div class=\"has_eae_slider elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-420bb66\" data-id=\"420bb66\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-column-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-0917506 elementor-widget elementor-widget-text-editor\" data-id=\"0917506\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-text-editor elementor-clearfix\">\n\t\t\t\t<p>Quando il fattore umano ha un peso determinante nel fenomeno valanghivo, il fenomeno naturale si pu\u00f2 trasformare in una catastrofe. Secondo i dati disponibili, la maggior parte degli incidenti valanghivi sono provocati da fattori antropici, non solo a causa del peso esercitato sul manto nevoso, ma per ignoranza e mancanza di attenzione.<\/p>\n<p>Poich\u00e9, come si \u00e8 detto, la maggior parte delle valanghe innescate dall\u2019uomo avviene a seguito del passaggio di sciatori su di un manto nevoso gi\u00e0 naturalmente instabile, la prima misura di prevenzione, capace di diminuire notevolmente le conseguenze negative, in questo caso sulla salute dell\u2019uomo, \u00e8 senza dubbio un corretto comportamento, da assumere da parte degli sciatori, soprattutto al di fuori delle piste da sci. Questo corretto comportamento prevede la lettura dei bollettini nivo-meteorologici prima dell\u2019escursione, la conoscenza delle condizioni del manto nevoso e dei percorsi pi\u00f9 sicuri da intraprendere e, non meno importante, l\u2019adozione di un equipaggiamento che comprenda sensori attivi per la ricerca in caso di seppellimento (tipo Arva ecc.) ed eventualmente altri strumenti per la protezione personale e per il soccorso in caso di valanga (ad esempio caschi, giacche gonfiabili per \u201cnuotare\u201d nella valanga, piccole bombole d\u2019ossigeno, pale portatili, sonde pieghevoli per la ricerca di corpi sepolti ecc.).<\/p>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-029ac4d elementor-widget elementor-widget-image\" data-id=\"029ac4d\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-image\">\n\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"768\" height=\"614\" src=\"https:\/\/besafenet.net\/wp-content\/uploads\/2020\/11\/aval10-768x614.jpg\" class=\"attachment-medium_large size-medium_large wp-image-4039\" alt=\"\" srcset=\"https:\/\/besafenet.net\/wp-content\/uploads\/2020\/11\/aval10-768x614.jpg 768w, https:\/\/besafenet.net\/wp-content\/uploads\/2020\/11\/aval10-300x240.jpg 300w, https:\/\/besafenet.net\/wp-content\/uploads\/2020\/11\/aval10.jpg 1000w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Figure 10 : Avalanche hazard signs advising back country skiers of the current avalanche danger level. Source: www.straight.com<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/p>\n<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-accordion-item\">\n\t\t\t\t\t<div id=\"elementor-tab-title-7017\" class=\"elementor-tab-title\" data-tab=\"7\" role=\"tab\" aria-controls=\"elementor-tab-content-7017\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon elementor-accordion-icon-left\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-closed\"><i class=\"fas fa-plus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-opened\"><i class=\"fas fa-minus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" href=\"\">7. I comportamenti umani possono influenzare le conseguenze delle valanghe?<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div id=\"elementor-tab-content-7017\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"7\" role=\"tabpanel\" aria-labelledby=\"elementor-tab-title-7017\"><p>\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"8388\" class=\"elementor elementor-8388 elementor-4026\">\n\t\t\t\t\t\t<div class=\"elementor-inner\">\n\t\t\t\t<div class=\"elementor-section-wrap\">\n\t\t\t\t\t\t\t\t\t<section class=\"has_eae_slider elementor-section elementor-top-section elementor-element elementor-element-a8350f0 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"a8350f0\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t\t\t<div class=\"elementor-row\">\n\t\t\t\t\t<div class=\"has_eae_slider elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-486a4f8\" data-id=\"486a4f8\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-column-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-33f5a43 elementor-widget elementor-widget-text-editor\" data-id=\"33f5a43\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-text-editor elementor-clearfix\">\n\t\t\t\t<p>Le valanghe sono sempre causate da uno stress esterno che agisce sul manto nevoso. Non sono eventi casuali o spontanei. Le cause scatenanti, di tipo naturale, includono le precipitazioni nevose, il calore radiativo e convettivo, i crolli di roccia e di ghiaccio ed altri impatti repentini; comunque, anche un manto nevoso mantenutosi a temperatura, pressione ed umidit\u00e0 costanti pu\u00f2 evolvere nel tempo e sviluppare stress interni, spesso legati al suo lento fluire (<em>creep<\/em>) verso valle. Le cause scatenanti di origine antropica possono essere il passaggio di sciatori, di motoslitte e l\u2019utilizzo di esplosivi per il controllo stesso delle valanghe. Lo stress innescante l\u2019instabilit\u00e0 del manto nevoso pu\u00f2 essere sia prossimo al punto di rottura che remoto.<\/p>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-89f4120 elementor-widget elementor-widget-image\" data-id=\"89f4120\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-image\">\n\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"532\" src=\"https:\/\/besafenet.net\/wp-content\/uploads\/2020\/11\/aval9.jpg\" class=\"attachment-large size-large wp-image-4031\" alt=\"\" srcset=\"https:\/\/besafenet.net\/wp-content\/uploads\/2020\/11\/aval9.jpg 800w, https:\/\/besafenet.net\/wp-content\/uploads\/2020\/11\/aval9-300x200.jpg 300w, https:\/\/besafenet.net\/wp-content\/uploads\/2020\/11\/aval9-768x511.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Figure 9 &#8211; Skier triggered slab avalanche. Source: www.jhunderground.com<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/p>\n<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-accordion-item\">\n\t\t\t\t\t<div id=\"elementor-tab-title-7018\" class=\"elementor-tab-title\" data-tab=\"8\" role=\"tab\" aria-controls=\"elementor-tab-content-7018\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon elementor-accordion-icon-left\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-closed\"><i class=\"fas fa-plus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-opened\"><i class=\"fas fa-minus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" href=\"\">8. Si possono prevedere le valanghe?<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div id=\"elementor-tab-content-7018\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"8\" role=\"tabpanel\" aria-labelledby=\"elementor-tab-title-7018\"><p>\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"8392\" class=\"elementor elementor-8392 elementor-4046\">\n\t\t\t\t\t\t<div class=\"elementor-inner\">\n\t\t\t\t<div class=\"elementor-section-wrap\">\n\t\t\t\t\t\t\t\t\t<section class=\"has_eae_slider elementor-section elementor-top-section elementor-element elementor-element-3a28d73 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"3a28d73\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t\t\t<div class=\"elementor-row\">\n\t\t\t\t\t<div class=\"has_eae_slider elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-3c22776\" data-id=\"3c22776\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-column-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-9fef678 elementor-widget elementor-widget-text-editor\" data-id=\"9fef678\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-text-editor elementor-clearfix\">\n\t\t\t\t<p>Le osservazioni nivologiche (incluse le analisi di stabilit\u00e0), parallelamente a quelle meteorologiche, costituiscono l\u2019elemento di maggior importanza nella previsione delle valanghe. Lo scopo principale \u00e8 individuare quali sono le condizioni critiche, per la stabilit\u00e0 del manto nevoso, delle sue propriet\u00e0 fisiche e nivologiche. Tutte le verifiche di stabilit\u00e0 del manto nevoso vengono eseguite all\u2019aperto (vedi figure 5 e 6 della domanda\u00a0<a href=\"http:\/\/www.besafenet.net\/it-it\/natural-hazards-avalanches#faq228\">nr. 3<\/a>).<\/p>\n<p>L\u2019insieme delle osservazioni meteorologiche convenzionali e di quelle nivologiche, utilizzato per la previsione delle valanghe, viene effettuato da professionisti esperti nell\u2019analisi del manto nevoso, costantemente addestrati.<\/p>\n<p>L\u2019insieme delle osservazioni nivologiche, effettuate per una certa area, viene raccolto presso appositi centri d\u2019analisi (ad esempio centri valanghe, uffici idrografici ecc.) preposti alla redazione di bollettini nivo-meteorologici; tali bollettini identificano, attraverso una standardizzata scala di pericolo, le zone a diversa pericolosit\u00e0 (o rischio, a seconda della terminologia adottata) valanghiva. I bollettini vengono poi diffusi attraverso ogni mezzo di comunicazione possibile (internet, telefoni, radio, TV, opuscoli e manifesti ecc.) affinch\u00e9 il maggior numero di interessati possa averne immediata visione, prima di effettuare un\u2019escursione.<\/p>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-675bb9c elementor-widget elementor-widget-image\" data-id=\"675bb9c\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-image\">\n\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"400\" height=\"623\" src=\"https:\/\/besafenet.net\/wp-content\/uploads\/2020\/11\/aval11.jpg\" class=\"attachment-large size-large wp-image-4051\" alt=\"\" srcset=\"https:\/\/besafenet.net\/wp-content\/uploads\/2020\/11\/aval11.jpg 400w, https:\/\/besafenet.net\/wp-content\/uploads\/2020\/11\/aval11-193x300.jpg 193w\" sizes=\"(max-width: 400px) 100vw, 400px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Figure 11 : One of many types of avalanche bulletin, extremely valuable for a correct information on the current snow avalanche danger. It should be consulted before choosing the skiing destination and to select the right slopes to cross. Source:\u00a0www.pc.gc.ca<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/p>\n<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-accordion-item\">\n\t\t\t\t\t<div id=\"elementor-tab-title-7019\" class=\"elementor-tab-title\" data-tab=\"9\" role=\"tab\" aria-controls=\"elementor-tab-content-7019\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon elementor-accordion-icon-left\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-closed\"><i class=\"fas fa-plus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-opened\"><i class=\"fas fa-minus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" href=\"\">9. Si possono prevenire le valanghe?<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div id=\"elementor-tab-content-7019\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"9\" role=\"tabpanel\" aria-labelledby=\"elementor-tab-title-7019\"><p>\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"8394\" class=\"elementor elementor-8394 elementor-4057\">\n\t\t\t\t\t\t<div class=\"elementor-inner\">\n\t\t\t\t<div class=\"elementor-section-wrap\">\n\t\t\t\t\t\t\t\t\t<section class=\"has_eae_slider elementor-section elementor-top-section elementor-element elementor-element-0b11aee elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"0b11aee\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t\t\t<div class=\"elementor-row\">\n\t\t\t\t\t<div class=\"has_eae_slider elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-0e7e8c9\" data-id=\"0e7e8c9\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-column-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-7aa38c6 elementor-widget elementor-widget-text-editor\" data-id=\"7aa38c6\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-text-editor elementor-clearfix\">\n\t\t\t\t<p>La risposta a questa domanda \u00e8 \u201csi\u201d, sebbene a volte la prevenzione possa essere molto difficile e costosa. Esistono diverse tecniche per ridurre gli effetti di una valanga. Queste possono essere classificate in due gruppi, in base ai punti di applicazione, alla tipologia di valanga, alla dimensione dell\u2019area interessata, ai risultati attesi a breve e a lungo termine ed ai loro costi, come da elenco che segue:<\/p>\n<ol>\n<li><strong>A) Tecniche di prevenzione permanenti<\/strong><\/li>\n<\/ol>\n<p><u>A.1) Tecniche di prevenzione permanenti, attive (Applicate nelle aree di distacco)<\/u><\/p>\n<p>Terrazzi in terra, riforestazione, palificate, treppiedi, ponti da neve, reti da neve, staccionate respingi-vento, pannelli da vento ecc.<\/p>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-29a78a6 elementor-widget elementor-widget-image\" data-id=\"29a78a6\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-image\">\n\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"375\" src=\"https:\/\/besafenet.net\/wp-content\/uploads\/2020\/11\/aval12.jpg\" class=\"attachment-large size-large wp-image-4062\" alt=\"\" srcset=\"https:\/\/besafenet.net\/wp-content\/uploads\/2020\/11\/aval12.jpg 500w, https:\/\/besafenet.net\/wp-content\/uploads\/2020\/11\/aval12-300x225.jpg 300w\" sizes=\"(max-width: 500px) 100vw, 500px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Figure 12 &#8211; Avalanche protection fences on a mountain slope. It is one of the many active actions against snow avalanche initiation in their potential starting zones. Source: www.flickriver.com<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9f2b7a3 elementor-widget elementor-widget-text-editor\" data-id=\"9f2b7a3\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-text-editor elementor-clearfix\">\n\t\t\t\t<p><u>A.2) Tecniche di prevenzione permanenti, passive (Applicate nelle zone di transito e di arresto)<\/u><\/p>\n<p>Muri deflettori, muri d\u2019arresto, cunei, cumuli e canali d\u2019arresto, tunnel, avvisi stradali e sistemi di chiusura preventiva delle strade, tecniche di consolidamento degli edifici e delle fondazioni.<\/p>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-490eba4 elementor-widget elementor-widget-image\" data-id=\"490eba4\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-image\">\n\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"444\" src=\"https:\/\/besafenet.net\/wp-content\/uploads\/2020\/11\/aval13.jpg\" class=\"attachment-large size-large wp-image-4067\" alt=\"\" srcset=\"https:\/\/besafenet.net\/wp-content\/uploads\/2020\/11\/aval13.jpg 700w, https:\/\/besafenet.net\/wp-content\/uploads\/2020\/11\/aval13-300x190.jpg 300w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Figure 13 &#8211; Diversion dams used to channelize the snow avalanche to locations where they cannot cause any damage. Picture: Dams Reckingen, SLF 1984. Source: www.planat.ch<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1d47922 elementor-widget elementor-widget-text-editor\" data-id=\"1d47922\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-text-editor elementor-clearfix\">\n\t\t\t\t<ol>\n<li><strong>B) Tecniche di prevenzione temporanee<\/strong><\/li>\n<\/ol>\n<p><u>B.1) Tecniche di prevenzione temporanee, attive<\/u><\/p>\n<p>Catex (uso di esplosivi trasportati via cavo), Gaz-Ex (esplosivi a gas compresso), cariche esplosive gettate a mano, Avalhex\u2026<\/p>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8704961 elementor-widget elementor-widget-image\" data-id=\"8704961\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-image\">\n\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"375\" src=\"https:\/\/besafenet.net\/wp-content\/uploads\/2020\/11\/aval14.jpg\" class=\"attachment-large size-large wp-image-4072\" alt=\"\" srcset=\"https:\/\/besafenet.net\/wp-content\/uploads\/2020\/11\/aval14.jpg 500w, https:\/\/besafenet.net\/wp-content\/uploads\/2020\/11\/aval14-300x225.jpg 300w\" sizes=\"(max-width: 500px) 100vw, 500px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Figura 14 &#8211; Gaz-ex: una sorgente di gas in pressione posizionato a monte di una zona di potenziale distacco valanghe. Qualora la stabilit\u00e0 del manto nevoso sia ritenuta bassa, lo strumento viene utilizzato per innescare artificialmente la valanga, prevenendo lo sviluppo naturale ed incontrollato di fenomeni di proporzioni maggiori. Fonte: www.toraval.fr<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f690eeb elementor-widget elementor-widget-text-editor\" data-id=\"f690eeb\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-text-editor elementor-clearfix\">\n\t\t\t\t<p><u>B.2) Tecniche di prevenzione temporanee, passive<\/u><\/p>\n<p>Osservazioni del manto nevoso e dell\u2019attivit\u00e0 valanghiva, cartografia, evacuazione di aree a rischio valanghe e divieti d\u2019accesso ad aree a rischio\u2026<\/p>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/p>\n<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-accordion-item\">\n\t\t\t\t\t<div id=\"elementor-tab-title-70110\" class=\"elementor-tab-title\" data-tab=\"10\" role=\"tab\" aria-controls=\"elementor-tab-content-70110\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon elementor-accordion-icon-left\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-closed\"><i class=\"fas fa-plus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-opened\"><i class=\"fas fa-minus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" href=\"\">10. Si possono mitigare le conseguenze di una valanga?<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div id=\"elementor-tab-content-70110\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"10\" role=\"tabpanel\" aria-labelledby=\"elementor-tab-title-70110\"><p>\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"8396\" class=\"elementor elementor-8396 elementor-4078\">\n\t\t\t\t\t\t<div class=\"elementor-inner\">\n\t\t\t\t<div class=\"elementor-section-wrap\">\n\t\t\t\t\t\t\t\t\t<section class=\"has_eae_slider elementor-section elementor-top-section elementor-element elementor-element-1abd745 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"1abd745\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t\t\t<div class=\"elementor-row\">\n\t\t\t\t\t<div class=\"has_eae_slider elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-fc4f404\" data-id=\"fc4f404\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-column-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-ffae701 elementor-widget elementor-widget-text-editor\" data-id=\"ffae701\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-text-editor elementor-clearfix\">\n\t\t\t\t<p>Oltre alle misure per prevenire le valanghe, la mitigazione delle conseguenze si basa su una crescente conoscenza del fenomeno da parte delle persone e degli amministratori locali, attraverso corsi di preparazione che hanno come scopo finale quello di rendere consapevoli del pericolo, ed attenti, tutti coloro che si trovano in aree esposte al pericolo valanghe.<\/p>\n<p>Vi sono poi misure passive che vengono intraprese per mettere al sicuro strutture ed infrastrutture dall\u2019eventuale impatto con una valanga. Tra le pi\u00f9 frequenti vi sono: gallerie a protezione di strade e ferrovie, cunei deviatori a monte di edifici, barriere trasversali alla direzione di flusso della valanga ecc.<\/p>\n<p>In assoluto, la migliore mitigazione del pericolo valanghivo \u00e8 rappresentata da una buona pianificazione territoriale, che presuppone un\u2019ottima conoscenza della pericolosit\u00e0 valanghiva dell\u2019area ed una zonizzazione del pericolo che contempli anche l\u2019uso di modelli numerici di simulazione della dinamica valanghiva.<\/p>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9ca212d elementor-widget elementor-widget-image\" data-id=\"9ca212d\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-image\">\n\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"772\" src=\"https:\/\/besafenet.net\/wp-content\/uploads\/2020\/11\/aval15b-1024x772.gif\" class=\"attachment-large size-large wp-image-4083\" alt=\"\" srcset=\"https:\/\/besafenet.net\/wp-content\/uploads\/2020\/11\/aval15b-1024x772.gif 1024w, https:\/\/besafenet.net\/wp-content\/uploads\/2020\/11\/aval15b-300x226.gif 300w, https:\/\/besafenet.net\/wp-content\/uploads\/2020\/11\/aval15b-768x579.gif 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Figure 15 &#8211; RAMMS &#8211; a two-dimensional model (whose output is depicted here on a 3D alpine terrain). The software, developed at the Institute for Snow and Avalanche Research SLF of Davos, Switzerland, can compute the evolution of avalanche flow height along the snow avalanche path. Source: www.slf.ch<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/p>\n<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-accordion-item\">\n\t\t\t\t\t<div id=\"elementor-tab-title-70111\" class=\"elementor-tab-title\" data-tab=\"11\" role=\"tab\" aria-controls=\"elementor-tab-content-70111\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon elementor-accordion-icon-left\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-closed\"><i class=\"fas fa-plus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-opened\"><i class=\"fas fa-minus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" href=\"\">11. Cosa si deve fare in caso di valanga?<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div id=\"elementor-tab-content-70111\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"11\" role=\"tabpanel\" aria-labelledby=\"elementor-tab-title-70111\"><p>\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"8398\" class=\"elementor elementor-8398 elementor-4089\">\n\t\t\t\t\t\t<div class=\"elementor-inner\">\n\t\t\t\t<div class=\"elementor-section-wrap\">\n\t\t\t\t\t\t\t\t\t<section class=\"has_eae_slider elementor-section elementor-top-section elementor-element elementor-element-7724722 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"7724722\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t\t\t<div class=\"elementor-row\">\n\t\t\t\t\t<div class=\"has_eae_slider elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-8b78726\" data-id=\"8b78726\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-column-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-0dfff75 elementor-widget elementor-widget-text-editor\" data-id=\"0dfff75\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-text-editor elementor-clearfix\">\n\t\t\t\t<p>Se attraversi aree soggette a valanghe e non hai ricevuto un\u2019adeguata preparazione sulle valanghe, oppure non presti sufficiente attenzione, puoi essere immediatamente coinvolto in una valanga! Credimi! Non vorrai trovarti in una situazione simile!<\/p>\n<p>Valanghe di grande magnitudo possono incorporare, lungo il percorso verso valle, ghiaccio, rocce, alberi ed altri materiali. In aree montuose, le valanghe rappresentano uno dei pi\u00f9 gravi pericoli per la vita e la propriet\u00e0, grazie al loro potere distruttivo che deriva dalla capacit\u00e0 di trasportare enormi masse di neve, in modo rapido, lungo grandi distanze.<\/p>\n<p>Anche le valanghe pi\u00f9 piccole possono costituire un serio pericolo per la vita, anche se si \u00e8 accompagnati da persone esperte e ben equipaggiate che riescono ad evitare la valanga.<\/p>\n<p>Coloro che vengono coinvolti in una valanga dovrebbero cercare di spostarsi verso un lato della valanga prima di cadere, quindi sbarazzarsi del loro equipaggiamento e cercare di nuotare nella massa nevosa in movimento.<\/p>\n<p>Quando sei coinvolto in una valanga, il panico ti assale e perdi il senso della direzione. Oggetti trasportati dalla valanga possono colpirti. La respirazione diviene pi\u00f9 difficile. Mentre la valanga perde velocit\u00e0 puoi avvertire la pressione della neve sul tuo corpo ed il tuo movimento, all\u2019interno della massa nevosa, si fa sempre pi\u00f9 difficile. La respirazione \u00e8 difficile perch\u00e9 la neve ti entra nella bocca e nel naso. Il tuo corpo inizia a raffreddarsi. Quando la valanga si arresta, dovresti cercare di creare un vuoto davanti alla bocca e di spingere un braccio, una gamba od un oggetto verso la superficie, sempre tu sia ancora conscio. Se ti \u00e8 ancora possibile muoverti dopo che la valanga si \u00e8 fermata, devi ampliare lo spazio d\u2019aria, al contempo minimizzando i movimenti per ridurre il consumo di ossigeno. Col passare del tempo, la carenza di ossigeno e l\u2019ipotermia amplificano i loro effetti.<\/p>\n<p>\u00c8 vitale il fatto che chiunque sopravviva ad una valanga si attivi subito nelle operazioni di ricerca, piuttosto che attendere i soccorsi. Ulteriore aiuto pu\u00f2 essere invocato qualora venga individuato qualcuno seriamente ferito o qualora qualcuno sia disperso dopo i primi soccorsi (ovvero dopo almeno 30 minuti di ricerca).<\/p>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2e08ec9 elementor-widget elementor-widget-image\" data-id=\"2e08ec9\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-image\">\n\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"531\" src=\"https:\/\/besafenet.net\/wp-content\/uploads\/2020\/11\/aval16.jpg\" class=\"attachment-large size-large wp-image-4094\" alt=\"\" srcset=\"https:\/\/besafenet.net\/wp-content\/uploads\/2020\/11\/aval16.jpg 800w, https:\/\/besafenet.net\/wp-content\/uploads\/2020\/11\/aval16-300x199.jpg 300w, https:\/\/besafenet.net\/wp-content\/uploads\/2020\/11\/aval16-768x510.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Figure 16 &#8211; Training on what to do in case of avalanche is of paramount importance for back country skiers. Basically, the training consists in getting acquainted with rescue procedures, involving also the use of beepers (the two small cell-phone-like objects in the centre of the picture) which help to spot a body buried by an avalanche. Source: www.tamara-why.blogspot.com<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/p>\n<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-accordion-item\">\n\t\t\t\t\t<div id=\"elementor-tab-title-70112\" class=\"elementor-tab-title\" data-tab=\"12\" role=\"tab\" aria-controls=\"elementor-tab-content-70112\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon elementor-accordion-icon-left\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-closed\"><i class=\"fas fa-plus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-opened\"><i class=\"fas fa-minus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" href=\"\">12. Che tipi di carte esistono per le valanghe?<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div id=\"elementor-tab-content-70112\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"12\" role=\"tabpanel\" aria-labelledby=\"elementor-tab-title-70112\"><p>\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"8400\" class=\"elementor elementor-8400 elementor-4100\">\n\t\t\t\t\t\t<div class=\"elementor-inner\">\n\t\t\t\t<div class=\"elementor-section-wrap\">\n\t\t\t\t\t\t\t\t\t<section class=\"has_eae_slider elementor-section elementor-top-section elementor-element elementor-element-36d2290 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"36d2290\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t\t\t<div class=\"elementor-row\">\n\t\t\t\t\t<div class=\"has_eae_slider elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-79e7a68\" data-id=\"79e7a68\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-column-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-5f0aa9d elementor-widget elementor-widget-text-editor\" data-id=\"5f0aa9d\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-text-editor elementor-clearfix\">\n\t\t\t\t<p>Le valanghe non sono facilmente prevedibili e spesso possono produrre effetti distruttivi. La cartografia valanghiva riguarda le cause e le conseguenze di tali fenomeni e cerca di individuarle in diversi modi.<\/p>\n<p>Le carte di pericolosit\u00e0 valanghiva contengono principalmente elementi topografici a larga scala ed elementi tematici. In tali carte, vengono presi in considerazione sia gli aspetti diretti che quelli indiretti delle valanghe, grazie all\u2019interpretazione di fotografie aeree ed al rilevamento di campagna.<\/p>\n<p>Le valanghe divengono un rischio quando possono colpire persone o beni. Le carte del rischio valanghivo mostrano valori di vulnerabilit\u00e0 per tutti gli elementi a rischio presenti in aree a diversa pericolosit\u00e0 valanghiva.<\/p>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c0eae52 elementor-widget elementor-widget-image\" data-id=\"c0eae52\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-image\">\n\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"299\" src=\"https:\/\/besafenet.net\/wp-content\/uploads\/2020\/11\/aval17-1024x299.jpg\" class=\"attachment-large size-large wp-image-4105\" alt=\"\" srcset=\"https:\/\/besafenet.net\/wp-content\/uploads\/2020\/11\/aval17-1024x299.jpg 1024w, https:\/\/besafenet.net\/wp-content\/uploads\/2020\/11\/aval17-300x88.jpg 300w, https:\/\/besafenet.net\/wp-content\/uploads\/2020\/11\/aval17-768x224.jpg 768w, https:\/\/besafenet.net\/wp-content\/uploads\/2020\/11\/aval17-1536x449.jpg 1536w, https:\/\/besafenet.net\/wp-content\/uploads\/2020\/11\/aval17-2048x599.jpg 2048w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Figure 17 &#8211; Map of Snow Avalanche Probable Locations, from the original French &#8220;Carte de Localisation des Ph\u00e9nom\u00e8nes d&#8217;Avalanche (CLPA)&#8221;. The map shows areas identifying possible location of snow avalanche paths: in orange, avalanche paths are identified after the study of aerial photographs (photo-interpretation and field analysis); in purple, avalanche paths are identified after an investigation undertaken by collecting testimonies; orange and purple diagonal lines represent, respectively, area assessed as potential avalanche source areas by aerial photo and field interpretation and by inquiries. Source: www.avalanches.fr<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/p>\n<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Pericolosit\u00e0 Naturali Valanghe Preparato da\u00a0AFEM &#8211; European Natural Disasters Training Centre (Ankara, Turkey) &amp; the Editorial Board Una valanga \u00e8 un rapido flusso di neve lungo un versante. In aree montuose, le valanghe sono tra le principali minacce alla vita ed alle strutture a causa del loro potere distruttivo che deriva dalla loro capacit\u00e0 di [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":8887,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Valanghe - BeSafeNet<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/besafenet.net\/hazards\/avalanches\/\" \/>\n<meta property=\"og:locale\" content=\"it_IT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Valanghe - BeSafeNet\" \/>\n<meta property=\"og:description\" content=\"Pericolosit\u00e0 Naturali Valanghe Preparato da\u00a0AFEM &#8211; European Natural Disasters Training Centre (Ankara, Turkey) &amp; the Editorial Board Una valanga \u00e8 un rapido flusso di neve lungo un versante. In aree montuose, le valanghe sono tra le principali minacce alla vita ed alle strutture a causa del loro potere distruttivo che deriva dalla loro capacit\u00e0 di [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/besafenet.net\/hazards\/avalanches\/\" \/>\n<meta property=\"og:site_name\" content=\"BeSafeNet\" \/>\n<meta property=\"article:modified_time\" content=\"2024-06-11T13:16:35+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/besafenet.net\/wp-content\/uploads\/2020\/11\/avalanches-1024x320.jpg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"45 minuti\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/besafenet.net\/hazards\/avalanches\/\",\"url\":\"https:\/\/besafenet.net\/hazards\/avalanches\/\",\"name\":\"Valanghe - BeSafeNet\",\"isPartOf\":{\"@id\":\"https:\/\/besafenet.net\/#website\"},\"datePublished\":\"2020-12-04T10:43:25+00:00\",\"dateModified\":\"2024-06-11T13:16:35+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/besafenet.net\/hazards\/avalanches\/#breadcrumb\"},\"inLanguage\":\"it-IT\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/besafenet.net\/hazards\/avalanches\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/besafenet.net\/hazards\/avalanches\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/besafenet.net\/el\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Pericolosit\u00e0\",\"item\":\"https:\/\/besafenet.net\/hazards\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Valanghe\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/besafenet.net\/#website\",\"url\":\"https:\/\/besafenet.net\/\",\"name\":\"BeSafeNet\",\"description\":\"\",\"publisher\":{\"@id\":\"https:\/\/besafenet.net\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/besafenet.net\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"it-IT\"},{\"@type\":\"Organization\",\"@id\":\"https:\/\/besafenet.net\/#organization\",\"name\":\"BeSafeNet\",\"url\":\"https:\/\/besafenet.net\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"it-IT\",\"@id\":\"https:\/\/besafenet.net\/#\/schema\/logo\/image\/\",\"url\":\"https:\/\/besafenet.net\/wp-content\/uploads\/2020\/11\/besafe-logo.svg\",\"contentUrl\":\"https:\/\/besafenet.net\/wp-content\/uploads\/2020\/11\/besafe-logo.svg\",\"width\":1,\"height\":1,\"caption\":\"BeSafeNet\"},\"image\":{\"@id\":\"https:\/\/besafenet.net\/#\/schema\/logo\/image\/\"}}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Valanghe - BeSafeNet","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/besafenet.net\/hazards\/avalanches\/","og_locale":"it_IT","og_type":"article","og_title":"Valanghe - BeSafeNet","og_description":"Pericolosit\u00e0 Naturali Valanghe Preparato da\u00a0AFEM &#8211; European Natural Disasters Training Centre (Ankara, Turkey) &amp; the Editorial Board Una valanga \u00e8 un rapido flusso di neve lungo un versante. In aree montuose, le valanghe sono tra le principali minacce alla vita ed alle strutture a causa del loro potere distruttivo che deriva dalla loro capacit\u00e0 di [&hellip;]","og_url":"https:\/\/besafenet.net\/hazards\/avalanches\/","og_site_name":"BeSafeNet","article_modified_time":"2024-06-11T13:16:35+00:00","og_image":[{"url":"https:\/\/besafenet.net\/wp-content\/uploads\/2020\/11\/avalanches-1024x320.jpg"}],"twitter_card":"summary_large_image","twitter_misc":{"Est. reading time":"45 minuti"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/besafenet.net\/hazards\/avalanches\/","url":"https:\/\/besafenet.net\/hazards\/avalanches\/","name":"Valanghe - BeSafeNet","isPartOf":{"@id":"https:\/\/besafenet.net\/#website"},"datePublished":"2020-12-04T10:43:25+00:00","dateModified":"2024-06-11T13:16:35+00:00","breadcrumb":{"@id":"https:\/\/besafenet.net\/hazards\/avalanches\/#breadcrumb"},"inLanguage":"it-IT","potentialAction":[{"@type":"ReadAction","target":["https:\/\/besafenet.net\/hazards\/avalanches\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/besafenet.net\/hazards\/avalanches\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/besafenet.net\/el\/"},{"@type":"ListItem","position":2,"name":"Pericolosit\u00e0","item":"https:\/\/besafenet.net\/hazards\/"},{"@type":"ListItem","position":3,"name":"Valanghe"}]},{"@type":"WebSite","@id":"https:\/\/besafenet.net\/#website","url":"https:\/\/besafenet.net\/","name":"BeSafeNet","description":"","publisher":{"@id":"https:\/\/besafenet.net\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/besafenet.net\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"it-IT"},{"@type":"Organization","@id":"https:\/\/besafenet.net\/#organization","name":"BeSafeNet","url":"https:\/\/besafenet.net\/","logo":{"@type":"ImageObject","inLanguage":"it-IT","@id":"https:\/\/besafenet.net\/#\/schema\/logo\/image\/","url":"https:\/\/besafenet.net\/wp-content\/uploads\/2020\/11\/besafe-logo.svg","contentUrl":"https:\/\/besafenet.net\/wp-content\/uploads\/2020\/11\/besafe-logo.svg","width":1,"height":1,"caption":"BeSafeNet"},"image":{"@id":"https:\/\/besafenet.net\/#\/schema\/logo\/image\/"}}]}},"_links":{"self":[{"href":"https:\/\/besafenet.net\/it\/wp-json\/wp\/v2\/pages\/8846"}],"collection":[{"href":"https:\/\/besafenet.net\/it\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/besafenet.net\/it\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/besafenet.net\/it\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/besafenet.net\/it\/wp-json\/wp\/v2\/comments?post=8846"}],"version-history":[{"count":24,"href":"https:\/\/besafenet.net\/it\/wp-json\/wp\/v2\/pages\/8846\/revisions"}],"predecessor-version":[{"id":16256,"href":"https:\/\/besafenet.net\/it\/wp-json\/wp\/v2\/pages\/8846\/revisions\/16256"}],"up":[{"embeddable":true,"href":"https:\/\/besafenet.net\/it\/wp-json\/wp\/v2\/pages\/8887"}],"wp:attachment":[{"href":"https:\/\/besafenet.net\/it\/wp-json\/wp\/v2\/media?parent=8846"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}