{"id":2178,"date":"2014-10-07T23:26:10","date_gmt":"2014-10-07T22:26:10","guid":{"rendered":"http:\/\/audioblog.sonatura.com\/?p=2178"},"modified":"2014-10-08T21:30:29","modified_gmt":"2014-10-08T20:30:29","slug":"un-glacier-fossile","status":"publish","type":"post","link":"https:\/\/audioblog.sonatura.com\/?p=2178","title":{"rendered":"Un glacier fossile"},"content":{"rendered":"<p style=\"text-align: left;\"><a href=\"https:\/\/audioblog.sonatura.com\/wp-content\/uploads\/2014\/10\/Lac-dAsti.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignright size-full wp-image-2179\" title=\"Lac d'Asti\" src=\"https:\/\/audioblog.sonatura.com\/wp-content\/uploads\/2014\/10\/Lac-dAsti.jpg\" alt=\"Lac glaciaire sous le glacier fossile\" width=\"838\" height=\"562\" srcset=\"https:\/\/audioblog.sonatura.com\/wp-content\/uploads\/2014\/10\/Lac-dAsti.jpg 838w, https:\/\/audioblog.sonatura.com\/wp-content\/uploads\/2014\/10\/Lac-dAsti-300x201.jpg 300w\" sizes=\"auto, (max-width: 838px) 100vw, 838px\" \/><\/a>Certains d&rsquo;entre vous ont d\u00e9j\u00e0 eu la chance d&rsquo;entendre un pan de banquise s&rsquo;effondrer dans un grondement tonitruant ou un s\u00e9rac se d\u00e9tacher de son glacier dans un fracas assourdissant&#8230; Mais avez-vous d\u00e9j\u00e0 entendu les discrets grincements d&rsquo;un glacier fossile ? Ce ph\u00e9nom\u00e8ne g\u00e9ophysique est rare mais se trouve notamment dans le Queyras, <a title=\"Pour en savoir plus ; cliquez !\" href=\"http:\/\/www.geoglaciaire.net\/index.php?option=com_content&amp;view=article&amp;id=188&amp;Itemid=197\" target=\"_blank\">au lac d&rsquo;Asti <\/a>(2920 m), sur lequel vient s&rsquo;\u00e9chouer une r\u00e9cente moraine de blocs rocheux issue d&rsquo;un glacier \u00ab\u00a0fant\u00f4me\u00a0\u00bb que les cartes IGN mentionnaient encore dans les ann\u00e9es 60&rsquo;&#8230; Tandis que la mention \u00ab\u00a0glacier fossile\u00a0\u00bb y \u00e9tait encore port\u00e9e dans les ann\u00e9es 90&prime;, plus rien ne le mentionne dans les derni\u00e8res \u00e9ditions des ann\u00e9es 2000&prime;. Chronique d&rsquo;une mort annonc\u00e9e. En apparence totalement fondu et ass\u00e9ch\u00e9, sa consistance serait exclusivement rocheuse. Ma curiosit\u00e9 pour ce mastodonte min\u00e9ral ne fut donc qu&rsquo;encore plus attis\u00e9e lorsqu&rsquo;\u00e0 l&rsquo;occasion d&rsquo;une r\u00e9cente excursion sur place en cette fin septembre, j&rsquo;y vins capter son environnement sonore : bien qu&rsquo;aucun bruit ne se fasse entendre (hormis quelques Accenteurs alpins dont c&rsquo;est le domaine), l&rsquo;installation de mes micros sur tr\u00e9pied en contrebas de ce monstre de roches o\u00f9 d\u00e9goulinent moult \u00e9coulements glaciaux, r\u00e9v\u00e8la ce que l&rsquo;oreille nue ne peut percevoir. D&rsquo;\u00e9tranges craquements sporadiques trahissent les derniers soupirs de vie de ce g\u00e9ant \u00e0 l&rsquo;agonie&#8230; Sous la roche concass\u00e9e, le permafrost dilate la moraine qui s&rsquo;affesse inexorablement&#8230;<\/p>\n<div class=\"powerpress_player\" id=\"powerpress_player_408\"><audio class=\"wp-audio-shortcode\" id=\"audio-2178-1\" preload=\"none\" style=\"width: 100%;\" controls=\"controls\"><source type=\"audio\/mpeg\" src=\"http:\/\/audioblog.sonatura.com\/wp-content\/uploads\/2014\/10\/Un_glacier_fossile.mp3?_=1\" \/><a href=\"http:\/\/audioblog.sonatura.com\/wp-content\/uploads\/2014\/10\/Un_glacier_fossile.mp3\">http:\/\/audioblog.sonatura.com\/wp-content\/uploads\/2014\/10\/Un_glacier_fossile.mp3<\/a><\/audio><\/div><p class=\"powerpress_links powerpress_links_mp3\" style=\"margin-bottom: 1px !important;\">Podcast: <a href=\"http:\/\/audioblog.sonatura.com\/wp-content\/uploads\/2014\/10\/Un_glacier_fossile.mp3\" class=\"powerpress_link_pinw\" target=\"_blank\" title=\"Play in new window\" onclick=\"return powerpress_pinw('https:\/\/audioblog.sonatura.com\/?powerpress_pinw=2178-podcast');\" rel=\"nofollow\">Play in new window<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Certains d&rsquo;entre vous ont d\u00e9j\u00e0 eu la chance d&rsquo;entendre un pan de banquise s&rsquo;effondrer dans un grondement tonitruant ou un s\u00e9rac se d\u00e9tacher de son glacier dans un fracas assourdissant&#8230; Mais avez-vous d\u00e9j\u00e0 entendu les discrets grincements d&rsquo;un glacier fossile&nbsp;&hellip; <a href=\"https:\/\/audioblog.sonatura.com\/?p=2178\">finish&nbsp;reading&nbsp;Un glacier fossile<\/a><\/p>\n","protected":false},"author":10,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1,5],"tags":[113,110,109,112,111],"class_list":["post-2178","post","type-post","status-publish","format-standard","hentry","category-non-repertorie","category-paysages-sonores","tag-accenteur-alpin","tag-alpes","tag-glacier-fossile","tag-pergelisol","tag-permafrost"],"_links":{"self":[{"href":"https:\/\/audioblog.sonatura.com\/index.php?rest_route=\/wp\/v2\/posts\/2178","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/audioblog.sonatura.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/audioblog.sonatura.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/audioblog.sonatura.com\/index.php?rest_route=\/wp\/v2\/users\/10"}],"replies":[{"embeddable":true,"href":"https:\/\/audioblog.sonatura.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2178"}],"version-history":[{"count":9,"href":"https:\/\/audioblog.sonatura.com\/index.php?rest_route=\/wp\/v2\/posts\/2178\/revisions"}],"predecessor-version":[{"id":2199,"href":"https:\/\/audioblog.sonatura.com\/index.php?rest_route=\/wp\/v2\/posts\/2178\/revisions\/2199"}],"wp:attachment":[{"href":"https:\/\/audioblog.sonatura.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2178"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/audioblog.sonatura.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2178"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/audioblog.sonatura.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2178"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}