{"id":5943,"date":"2015-02-09T18:07:20","date_gmt":"2015-02-09T17:07:20","guid":{"rendered":"http:\/\/www.grandesterresbio.com\/?p=5943"},"modified":"2015-02-09T18:07:20","modified_gmt":"2015-02-09T17:07:20","slug":"antarctique-fonte-preoccupante-du-glacier-totten","status":"publish","type":"post","link":"https:\/\/claire-jannot.com\/?p=5943","title":{"rendered":"Antarctique: Fonte pr\u00e9occupante du glacier Totten"},"content":{"rendered":"

Le plus grand glacier de l’Antarctique oriental, dont la disparition pourrait engendrer une hausse de six m\u00e8tres du niveau des mers, est en train de fondre \u00e0 cause du r\u00e9chauffement de l’oc\u00e9an, ont d\u00e9clar\u00e9 lundi des scientifiques australiens.<\/span><\/h2>\n

\"GlacierAntarctique-www.grandesterresbio.com\"<\/a>Le glacier Totten<\/strong>, qui fait 120 kilom\u00e8tres de long sur plus de 30 km de large, \u00e9tait jusque l\u00e0 consid\u00e9r\u00e9 comme \u00e9tant situ\u00e9 dans une zone \u00e9pargn\u00e9e<\/strong> par les courants chauds, o\u00f9 la glace est donc tr\u00e8s stable et peu sujette aux variations.<\/span>
\nDe retour d’une exp\u00e9dition sur place, des scientifiques australiens ont cependant indiqu\u00e9 que l’eau autour du glacier s’\u00e9tait av\u00e9r\u00e9e plus chaude qu’attendue et que le glacier risquait de fondre par en dessous.<\/span>
\n\u00ab\u00a0Nous savions gr\u00e2ce \u00e0 des donn\u00e9es satellitaires que le glacier perdait de l’\u00e9paisseur mais nous ignorions pourquoi\u00a0\u00bb, a d\u00e9clar\u00e9 \u00e0 l’AFP Steve Rintoul<\/strong>, chef de l’exp\u00e9dition.<\/span>
\nLa temp\u00e9rature des eaux autour du glacier \u00e9taient environ 1,5 degr\u00e9 plus \u00e9lev\u00e9e<\/strong> que dans dans d’autres zones explor\u00e9es \u00e0 l’occasion de ce s\u00e9jour dans l’Antarctique pendant l’\u00e9t\u00e9 austral, a-t-il ajout\u00e9.<\/span>
\n\u00ab\u00a0Le fait que des eaux chaudes puissent atteindre ce glacier t\u00e9moigne que l’Est Antarctique est potentiellement plus vuln\u00e9rable \u00e0 l’impact du r\u00e9chauffement global qu’on ne le pensait jusqu’alors\u00a0\u00bb. <\/span>
\nLe glacier Totten<\/strong> ne va pas fondre du jour au lendemain et provoquer une mont\u00e9e brutale du niveau des mers, a dit le chercheur. Mais il a soulign\u00e9 que cette d\u00e9couverte \u00e9tait importante pour mieux cerner l’impact<\/strong> du changement de la temp\u00e9rature de l’oc\u00e9an sur la couverture glaciaire.\u00a0 <\/span>
\nLe rythme de la fonte des glaciers dans la zone de l’Antarctique la plus expos\u00e9e \u00e0 ce ph\u00e9nom\u00e8ne a tripl\u00e9 au cours de la derni\u00e8re d\u00e9cennie<\/strong>, selon une \u00e9tude publi\u00e9e le mois dernier et portant sur les 21 derni\u00e8res ann\u00e9es.<\/span><\/p>\n

Source : SYDNEY,\u00a026 jan 2015 (AFP)<\/span><\/address>\n
Cr\u00e9dit photo :\u00a0Par Joe Mastroianni, National Science Foundation (From Antarctic Photo Library: LAKEFRYXELL.JPG) [Public domain], via Wikimedia Commons<\/span><\/address>\n
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Le plus grand glacier de l’Antarctique oriental, dont la disparition pourrait engendrer une hausse de six m\u00e8tres du niveau des mers, est en train de fondre \u00e0 cause du r\u00e9chauffement de l’oc\u00e9an, ont d\u00e9clar\u00e9 lundi des scientifiques australiens. Le glacier … Continuer la lecture →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[2],"tags":[51,39,4,5,52],"class_list":["post-5943","post","type-post","status-publish","format-standard","hentry","category-ecologie","tag-climat","tag-eau","tag-ecologie2","tag-environnement","tag-oceans"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p5jjt5-1xR","_links":{"self":[{"href":"https:\/\/claire-jannot.com\/index.php?rest_route=\/wp\/v2\/posts\/5943","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/claire-jannot.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/claire-jannot.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/claire-jannot.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/claire-jannot.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=5943"}],"version-history":[{"count":2,"href":"https:\/\/claire-jannot.com\/index.php?rest_route=\/wp\/v2\/posts\/5943\/revisions"}],"predecessor-version":[{"id":5946,"href":"https:\/\/claire-jannot.com\/index.php?rest_route=\/wp\/v2\/posts\/5943\/revisions\/5946"}],"wp:attachment":[{"href":"https:\/\/claire-jannot.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=5943"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/claire-jannot.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=5943"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/claire-jannot.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=5943"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}