{"id":16532,"date":"2018-04-24T20:00:43","date_gmt":"2018-04-24T18:00:43","guid":{"rendered":"http:\/\/www.laterredufutur.com\/accueil\/?p=16532"},"modified":"2018-04-21T19:53:05","modified_gmt":"2018-04-21T17:53:05","slug":"la-calotte-glaciaire-de-lantarctique-recule-he-les-chercheurs-noubliez-pas-les-volcans","status":"publish","type":"post","link":"https:\/\/www.laterredufutur.com\/accueil\/la-calotte-glaciaire-de-lantarctique-recule-he-les-chercheurs-noubliez-pas-les-volcans\/","title":{"rendered":"La calotte glaciaire de l&rsquo;Antarctique recule &#8211; H\u00e9 les chercheurs, n&rsquo;oubliez pas les volcans !"},"content":{"rendered":"<div class=\"1665f18d14f35dd9e7566e1a8ac9a3e9\" data-index=\"1\" style=\"float: none; margin:10px 0 10px 0; text-align:center;\">\n<script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js\"><\/script>\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:block; text-align:center;\"\r\n     data-ad-layout=\"in-article\"\r\n     data-ad-format=\"fluid\"\r\n     data-ad-client=\"ca-pub-2860849627502538\"\r\n     data-ad-slot=\"3019501113\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script>\n<\/div>\n<p>Les bases glaciaires de l&rsquo;Antarctique reculent au travers des fonds marins. L&rsquo;oc\u00e9an Austral a fondu de 909 km2 entre 2010 et 2016. Et cette nouvelle \u00e9tude fournit des preuves flagrantes que le retrait se produit \u00e0 la base de la calotte glaciaire dans l&rsquo;oc\u00e9an. Mais il ne faut pas oublier que des d\u00e9couvertes r\u00e9centes ont r\u00e9v\u00e9l\u00e9 \u00e0 quel point l&rsquo;Antarctique est vraiment volcanique, m\u00eame si ce volcanisme est cach\u00e9 sous d&rsquo;\u00e9normes nappes de glace.<\/p>\n<p>Selon une nouvelle \u00e9tude, l&rsquo;eau chaude de l&rsquo;oc\u00e9an r\u00e9duit l&#8217;empreinte sous-marine de l&rsquo;Antarctique.<\/p>\n<p><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"16534\" data-permalink=\"https:\/\/www.laterredufutur.com\/accueil\/la-calotte-glaciaire-de-lantarctique-recule-he-les-chercheurs-noubliez-pas-les-volcans\/antarctique-fonte-glacaire-origine-volcanique\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2018\/04\/antarctique-fonte-glacaire-origine-volcanique.jpg?fit=600%2C400&amp;ssl=1\" data-orig-size=\"600,400\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"antarctique-fonte-glacaire-origine-volcanique\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2018\/04\/antarctique-fonte-glacaire-origine-volcanique.jpg?fit=600%2C400&amp;ssl=1\" class=\"alignnone size-full wp-image-16534\" src=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2018\/04\/antarctique-fonte-glacaire-origine-volcanique.jpg?resize=600%2C400\" alt=\"\" width=\"600\" height=\"400\" srcset=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2018\/04\/antarctique-fonte-glacaire-origine-volcanique.jpg?w=600&amp;ssl=1 600w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2018\/04\/antarctique-fonte-glacaire-origine-volcanique.jpg?resize=300%2C200&amp;ssl=1 300w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/p>\n<p>Les glaciers de l&rsquo;Antarctique ont recul\u00e9 \u00e0 un rythme moyen de 25 m\u00e8tres par an. Mais le taux de retrait des lignes d&rsquo;\u00e9chouage de huit des 65 plus grands glaciers de la calotte glaciaire est cinq fois plus important, soit environ 125 m\u00e8tres par an. Les taux les plus spectaculaires de recul de la ligne d&rsquo;ancrage ont \u00e9t\u00e9 mesur\u00e9s le long de la c\u00f4te ouest de l&rsquo;Antarctique.<\/p>\n<p>\u00ab\u00a0Notre \u00e9tude fournit des preuves \u00e9videntes que le recul se produit \u00e0 travers la couche de glace en raison de la fonte des glaces&nbsp;\u00e0 sa base&nbsp;dans l&rsquo;oc\u00e9an, et pas seulement aux quelques endroits qui ont \u00e9t\u00e9 cartographi\u00e9s auparavant \u00ab\u00a0, a d\u00e9clar\u00e9 le chercheur principal Hannes Konrad. \u00ab Cette retraite a eu un impact \u00e9norme sur les glaciers int\u00e9rieurs, car les lib\u00e9rer des fonds marins \u00e9limine les frictions, les amenant \u00e0 acc\u00e9l\u00e9rer et \u00e0 contribuer \u00e0 l&rsquo;\u00e9l\u00e9vation globale du niveau de la mer. \u00a0\u00bb<\/p>\n<p><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"16533\" data-permalink=\"https:\/\/www.laterredufutur.com\/accueil\/la-calotte-glaciaire-de-lantarctique-recule-he-les-chercheurs-noubliez-pas-les-volcans\/antarctique-fonte-glacaire-origine-volcanique-1\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2018\/04\/antarctique-fonte-glacaire-origine-volcanique-1.jpg?fit=768%2C806&amp;ssl=1\" data-orig-size=\"768,806\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;Martos-Martin;Yasmina M.&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;1507568218&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"antarctique-fonte-glacaire-origine-volcanique-1\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2018\/04\/antarctique-fonte-glacaire-origine-volcanique-1.jpg?fit=762%2C800&amp;ssl=1\" class=\"alignnone size-full wp-image-16533\" src=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2018\/04\/antarctique-fonte-glacaire-origine-volcanique-1.jpg?resize=768%2C806\" alt=\"\" width=\"768\" height=\"806\" srcset=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2018\/04\/antarctique-fonte-glacaire-origine-volcanique-1.jpg?w=768&amp;ssl=1 768w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2018\/04\/antarctique-fonte-glacaire-origine-volcanique-1.jpg?resize=286%2C300&amp;ssl=1 286w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2018\/04\/antarctique-fonte-glacaire-origine-volcanique-1.jpg?resize=762%2C800&amp;ssl=1 762w\" sizes=\"auto, (max-width: 768px) 100vw, 768px\" \/><\/p><div class=\"1665f18d14f35dd9e7566e1a8ac9a3e9\" data-index=\"2\" style=\"float: none; margin:10px 0 10px 0; text-align:center;\">\n<script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js\"><\/script>\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:block; text-align:center;\"\r\n     data-ad-layout=\"in-article\"\r\n     data-ad-format=\"fluid\"\r\n     data-ad-client=\"ca-pub-2860849627502538\"\r\n     data-ad-slot=\"3019501113\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script>\n<\/div>\n\n<p>Mais n&rsquo;oubliez pas que des d\u00e9couvertes r\u00e9centes ont r\u00e9v\u00e9l\u00e9 \u00e0 quel point l&rsquo;Antarctique est vraiment volcanique, m\u00eame si elle est cach\u00e9e sous d&rsquo;\u00e9normes nappes de glace.<\/p>\n<p>En ao\u00fbt 2017, les scientifiques ont d\u00e9couvert 91 volcans sous la glace de l&rsquo;Antarctique, mais ils n&rsquo;\u00e9taient pas certains qu&rsquo;ils soient actifs ou pas.<\/p>\n<p>En novembre 2017, une nouvelle source de chaleur a \u00e9t\u00e9 d\u00e9couverte sous l&rsquo;Antarctique, entra\u00eenant la fonte des glaces et le volcanisme.<\/p>\n<p>Quelques jours apr\u00e8s cette d\u00e9couverte, le British Antarctic Survey (BAS) avait r\u00e9v\u00e9l\u00e9 une nouvelle carte de chaleur antarctique montrant des points chauds sous la glace sur le continent glac\u00e9 et repr\u00e9sentant ainsi le \u00ab flux de chaleur g\u00e9othermique\u00bb \u00e0 la base de l&rsquo;inlandsis antarctique.<\/p>\n<p><span class=\"embed-youtube\" style=\"text-align:center; display: block;\"><iframe loading=\"lazy\" class=\"youtube-player\" width=\"640\" height=\"360\" src=\"https:\/\/www.youtube.com\/embed\/nGdPkZEaeSg?version=3&#038;rel=1&#038;showsearch=0&#038;showinfo=1&#038;iv_load_policy=1&#038;fs=1&#038;hl=fr-FR&#038;autohide=2&#038;wmode=transparent\" allowfullscreen=\"true\" style=\"border:0;\" sandbox=\"allow-scripts allow-same-origin allow-popups allow-presentation allow-popups-to-escape-sandbox\"><\/iframe><\/span><\/p>\n<p>L&rsquo;eau de l&rsquo;oc\u00e9an peut jouer un r\u00f4le dans ce ph\u00e9nom\u00e8ne \u00e9pique de fusion de la glace, mais cette source de chaleur n&rsquo;est pas aussi chaude et dramatique que celle d\u00e9gag\u00e9e par ces points chauds et ces volcans situ\u00e9s sous l&rsquo;\u00e9paisse couche de glace de l&rsquo;Antarctique.<\/p>\n<p><a href=\"http:\/\/www.laterredufutur.com\/accueil\">Adaptation TDF<\/a><\/p>\n<p>sources : <a href=\"http:\/\/strangesounds.org\/2018\/04\/antarcticas-ice-sheet-is-melting-ocean-water-volcanoes-hot-spots.html\" target=\"_blank\" rel=\"noopener\">http:\/\/strangesounds.org\/<\/a> \/ <a href=\"https:\/\/www.nature.com\/articles\/s41561-018-0082-z\" target=\"_blank\" rel=\"noopener\">https:\/\/www.nature.com\/<\/a><\/p>\n<p class=\"bawpvc-ajax-counter\" data-id=\"16532\">(1577)<\/p>\n<!--CusAds0-->\n<div style=\"font-size: 0px; height: 0px; line-height: 0px; margin: 0; padding: 0; clear: both;\"><\/div>","protected":false},"excerpt":{"rendered":"<p>Les bases glaciaires de l&rsquo;Antarctique reculent au travers des fonds marins. L&rsquo;oc\u00e9an Austral a fondu de 909 km2 entre 2010&#8230;<\/p>\n","protected":false},"author":1,"featured_media":16533,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0,"ngg_post_thumbnail":0,"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":"La calotte glaciaire de l'Antarctique recule - H\u00e9 les chercheurs, n'oubliez pas les volcans ! @laterredufutur","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":[20,19],"tags":[1252,156,393,267,6670,684,454,598],"class_list":["post-16532","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-climat","category-seismes-et-volcans","tag-antarctique","tag-banquise","tag-fonte","tag-glace","tag-inlandsis","tag-video","tag-volcanique","tag-volcanisme","wpcat-20-id","wpcat-19-id"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2018\/04\/antarctique-fonte-glacaire-origine-volcanique-1.jpg?fit=768%2C806&ssl=1","jetpack_shortlink":"https:\/\/wp.me\/p631RN-4iE","jetpack-related-posts":[{"id":22436,"url":"https:\/\/www.laterredufutur.com\/accueil\/lantarctique-est-la-plus-grande-region-volcanique-du-monde\/","url_meta":{"origin":16532,"position":0},"title":"L&rsquo;Antarctique est la plus grande r\u00e9gion volcanique du monde","author":"Admin","date":"23 avril 2021","format":false,"excerpt":"En ao\u00fbt 2017, des scientifiques ont d\u00e9couvert 91 volcans sous la calotte glaciaire antarctique, le plus haut \u00e9tant aussi haut que la montagne Eiger des Alpes Suisses, qui culmine \u00e0 pr\u00e8s de 4000 m\u00e8tres. Ceci s'ajoute aux 47 volcans sous-glaciaires d\u00e9j\u00e0 connus en Antarctique. Cela en fait la plus grande\u2026","rel":"","context":"Dans &quot;Seismes\/Volcans&quot;","block_context":{"text":"Seismes\/Volcans","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/seismes-et-volcans\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/04\/antarctique-region-volcanique-1.jpg?fit=1024%2C683&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/04\/antarctique-region-volcanique-1.jpg?fit=1024%2C683&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/04\/antarctique-region-volcanique-1.jpg?fit=1024%2C683&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/04\/antarctique-region-volcanique-1.jpg?fit=1024%2C683&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":4277,"url":"https:\/\/www.laterredufutur.com\/accueil\/un-volcan-fait-fondre-les-glaciers-en-antarctique\/","url_meta":{"origin":16532,"position":1},"title":"Un volcan fait fondre les glaciers en Antarctique","author":"Admin","date":"28 janvier 2008","format":false,"excerpt":"Si la calotte polaire est plut\u00f4t stable dans la partie est de l'Antarctique, il n'en va pas de m\u00eame \u00e0 l'ouest (NASA). Un volcan subglaciaire serait en partie \u00e0 l'origine de la diminution de l'\u00e9paisseur de la calotte \u00e0 l'ouest du continent.Des glaciologues britanniques ont d\u00e9couvert un volcan sous un\u2026","rel":"","context":"Dans &quot;Seismes\/Volcans&quot;","block_context":{"text":"Seismes\/Volcans","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/seismes-et-volcans\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/04\/antarctique1.jpg?fit=493%2C271&ssl=1&resize=350%2C200","width":350,"height":200},"classes":[]},{"id":4375,"url":"https:\/\/www.laterredufutur.com\/accueil\/rapports-douteux-sur-la-fonte-antarctique\/","url_meta":{"origin":16532,"position":2},"title":"Rapports Douteux sur la fonte Antarctique","author":"Admin","date":"2 avril 2008","format":false,"excerpt":"La plupart des articles rapportent que tout l'Antarctique fond. Ces rapports sont douteux, parce que c'est principalement la glace sur la p\u00e9ninsule antarctique qui fond. Ici\u00a0 la carte de l'Antarctique. \u00c0 8.850.000\u00a0km carr\u00e9s, ce continent est presque deux fois la taille des Etats-Unis (qui en font\u00a05.630.000\u00a0km carr\u00e9s). Voyez-vous cette petite\u2026","rel":"","context":"Dans &quot;Climat&quot;","block_context":{"text":"Climat","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/climat\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/spaw\/images\/bilde_1.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":27717,"url":"https:\/\/www.laterredufutur.com\/accueil\/un-forage-record-sous-la-glace-de-lantarctique-a-revele-une-grande-surprise\/","url_meta":{"origin":16532,"position":3},"title":"Un forage record sous la glace de l&rsquo;Antarctique a r\u00e9v\u00e9l\u00e9 une grande surprise","author":"Admin","date":"19 f\u00e9vrier 2026","format":false,"excerpt":"Des scientifiques affirment avoir for\u00e9 plus profond\u00e9ment que jamais sous la calotte glaciaire de l'Antarctique occidental, remontant jusqu'\u00e0 des millions d'ann\u00e9es en arri\u00e8re pour r\u00e9v\u00e9ler des signes indiquant qu'elle \u00e9tait autrefois, au moins en partie, un oc\u00e9an ouvert. Cette vaste \u00e9tendue contiendrait suffisamment de glace pour faire monter le niveau\u2026","rel":"","context":"Dans &quot;Arch\u00e9ologie&quot;","block_context":{"text":"Arch\u00e9ologie","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/archeologie\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2026\/02\/ocean-antarctique.jpg?fit=1200%2C800&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2026\/02\/ocean-antarctique.jpg?fit=1200%2C800&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2026\/02\/ocean-antarctique.jpg?fit=1200%2C800&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2026\/02\/ocean-antarctique.jpg?fit=1200%2C800&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2026\/02\/ocean-antarctique.jpg?fit=1200%2C800&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":25322,"url":"https:\/\/www.laterredufutur.com\/accueil\/un-paysage-fige-dans-le-temps-decouvert-sous-la-glace-de-lantarctique\/","url_meta":{"origin":16532,"position":4},"title":"Un paysage \u00ab fig\u00e9 dans le temps \u00bb d\u00e9couvert sous la glace de l&rsquo;Antarctique","author":"Admin","date":"31 octobre 2023","format":false,"excerpt":"Un ancien r\u00e9seau fluvial qui n'avait pas vu la lumi\u00e8re du jour depuis au moins 14 millions d'ann\u00e9es a \u00e9t\u00e9 d\u00e9couvert sous l'inlandsis de l'Antarctique de l'Est, selon de nouvelles recherches. \u00c0 l'aide d'un radar \u00e0 p\u00e9n\u00e9tration de glace et de donn\u00e9es satellitaires, Stewart Jamieson, glaciologue \u00e0 l'universit\u00e9 de Durham,\u2026","rel":"","context":"Dans &quot;Divers&quot;","block_context":{"text":"Divers","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/divers\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2023\/10\/relief-de-l-antarctique.jpg?fit=1024%2C415&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2023\/10\/relief-de-l-antarctique.jpg?fit=1024%2C415&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2023\/10\/relief-de-l-antarctique.jpg?fit=1024%2C415&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2023\/10\/relief-de-l-antarctique.jpg?fit=1024%2C415&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":26142,"url":"https:\/\/www.laterredufutur.com\/accueil\/selon-une-etude-les-canyons-sous-marins-jouent-un-role-crucial-dans-linstabilite-de-la-calotte-glaciaire-de-lantarctique\/","url_meta":{"origin":16532,"position":5},"title":"Selon une \u00e9tude, les canyons sous-marins jouent un r\u00f4le crucial dans l&rsquo;instabilit\u00e9 de la calotte glaciaire de l&rsquo;Antarctique","author":"Admin","date":"15 ao\u00fbt 2024","format":false,"excerpt":"Les canyons antarctiques jouent un r\u00f4le crucial dans l'instabilit\u00e9 de l'inlandsis de l'Antarctique oriental, car ils facilitent le transfert d'eau relativement chaude (eaux profondes circumpolaires) des zones abyssales vers le plateau continental et, de l\u00e0, vers la base de l'inlandsis, contribuant ainsi \u00e0 sa fonte. 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