{"id":26290,"date":"2021-04-30T03:34:29","date_gmt":"2021-04-30T07:34:29","guid":{"rendered":"https:\/\/antilla-martinique.com\/?p=26290"},"modified":"2021-05-23T05:05:07","modified_gmt":"2021-05-23T09:05:07","slug":"la-fonte-des-glaciers-saccelere-a-un-rythme-sans-precedent","status":"publish","type":"post","link":"https:\/\/antilla-martinique.com\/en\/la-fonte-des-glaciers-saccelere-a-un-rythme-sans-precedent\/","title":{"rendered":"La fonte des glaciers s’acc\u00e9l\u00e8re \u00e0 un rythme sans pr\u00e9c\u00e9dent"},"content":{"rendered":"\n\n\n
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A gauche, l’imagerie r\u00e9alis\u00e9e gr\u00e2ce au satellite Terra de glaciers situ\u00e9s au Canada. A droite, l\u2019amincissement constat\u00e9 entre 2000 et 2019, exprim\u00e9 en m\u00e8tres. \u00a9 CNRS<\/span><\/h4>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n\n\n
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\u00a0leur \u00e9tude<\/a> r\u00e9v\u00e8le que le rythme de la fonte a explos\u00e9 en l’espace de deux d\u00e9cennies, passant de 227 milliards de tonnes (gigatonnes) par an entre 2000 et 2004, \u00e0 298 gigatonnes entre 2015 et 2019. A elles seules, sept r\u00e9gions du globe repr\u00e9sentent 83% de la fonte totale. En t\u00eate\u00a0: l’Alaska (25% – soit 68Gt par an), l’Arctique canadien (20%) et la p\u00e9riph\u00e9rie du Groenland (13%).<\/p>\n

Contrairement aux calottes glaciaires de l’Antarctique et du Groenland, dont le rythme de la fonte a ralenti au d\u00e9but des ann\u00e9es 2010, les glaciers se liqu\u00e9fient donc de plus en plus vite. Cette surabondance d’eau due aux seuls glaciers compte pour 21% de l’augmentation du niveau des mers au cours de ces deux d\u00e9cennies, indique encore l’\u00e9tude. Le reste est d\u00fb \u00e0 la dilatation de l’eau sous l’effet du r\u00e9chauffement.<\/p>\n

Au XXI\u00e8 si\u00e8cle, l’\u00e9l\u00e9vation du niveau des mers menace directement les 200 millions d’\u00eatres humains qui vivent en zone c\u00f4ti\u00e8re proche du niveau de la mer. Mais la disparition des glaciers a aussi de graves cons\u00e9quences au niveau local, comme le d\u00e9bordement des lacs glaciaires<\/a> ou l’effondrement des montagnes structur\u00e9es par la glace.<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>","protected":false},"excerpt":{"rendered":"

A gauche, l’imagerie r\u00e9alis\u00e9e gr\u00e2ce au satellite Terra de glaciers situ\u00e9s au Canada. A droite, l\u2019amincissement constat\u00e9 entre 2000 et 2019, exprim\u00e9 en m\u00e8tres. \u00a9 CNRS \u00a0leur \u00e9tude r\u00e9v\u00e8le que le rythme de la fonte a explos\u00e9 en l’espace de deux d\u00e9cennies, passant de 227 milliards de tonnes (gigatonnes) par an entre 2000 et 2004,<\/p>","protected":false},"author":33,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_uf_show_specific_survey":0,"_uf_disable_surveys":false,"footnotes":"","rank_math_focus_keyword":"","rank_math_title":"","rank_math_description":"","rank_math_canonical_url":"","rank_math_robots":null,"rank_math_facebook_title":"","rank_math_facebook_description":"","rank_math_twitter_title":"","rank_math_twitter_description":""},"categories":[200],"tags":[],"class_list":["post-26290","post","type-post","status-publish","format-standard","category-ecologie"],"acf":[],"_links":{"self":[{"href":"https:\/\/antilla-martinique.com\/en\/wp-json\/wp\/v2\/posts\/26290","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/antilla-martinique.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/antilla-martinique.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/antilla-martinique.com\/en\/wp-json\/wp\/v2\/users\/33"}],"replies":[{"embeddable":true,"href":"https:\/\/antilla-martinique.com\/en\/wp-json\/wp\/v2\/comments?post=26290"}],"version-history":[{"count":0,"href":"https:\/\/antilla-martinique.com\/en\/wp-json\/wp\/v2\/posts\/26290\/revisions"}],"wp:attachment":[{"href":"https:\/\/antilla-martinique.com\/en\/wp-json\/wp\/v2\/media?parent=26290"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/antilla-martinique.com\/en\/wp-json\/wp\/v2\/categories?post=26290"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/antilla-martinique.com\/en\/wp-json\/wp\/v2\/tags?post=26290"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}