{"id":1016,"date":"2005-01-21T09:09:00","date_gmt":"2005-01-21T08:09:00","guid":{"rendered":"https:\/\/kids.esa.int\/antarctic_giant_on_the_loose\/"},"modified":"2026-10-08T00:34:55","modified_gmt":"2026-10-07T22:34:55","slug":"antarctic_giant_on_the_loose","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/fr\/antarctic_giant_on_the_loose\/","title":{"rendered":"G\u00e9ant de l\u2019Antarctique \u00e0 la d\u00e9rive"},"content":{"rendered":"
\n

Tout en bas de la Terre, un \u00e9norme iceberg, en forme de bouteille, menace de tout d\u00e9molir sur son passage. Envisat, le satellite de l\u2019Agence spatiale europ\u00e9enne, observe le moindre de ses d\u00e9placements.<\/p>\n<\/div>\n

Chaque \u00e9t\u00e9, d\u2019\u00e9normes morceaux de glace flottante se d\u00e9tachent du continent froid austral de l\u2019Antarctique. Cependant, en mars 2000, quelque chose d\u2019inhabituel s\u2019est produit, lorsqu\u2019un bloc de la taille de la Jama\u00efque s\u2019est d\u00e9tach\u00e9 de la plate-forme de Ross.<\/p>\n

Au cours des ann\u00e9es suivantes, le plus grand iceberg connu au monde s'est fractur\u00e9 en plusieurs morceaux. Le plus gros bloc, baptis\u00e9 B-15A, a fini par d\u00e9river vers le d\u00e9troit de McMurdo, o\u00f9 il a bloqu\u00e9 les courants oc\u00e9aniques et provoqu\u00e9 une accumulation de glace de mer.<\/p>\n

Sa pr\u00e9sence fait entrave aux navires qui tentent de ravitailler les bases scientifiques de la r\u00e9gion. Et la formation d\u2019une plus grande quantit\u00e9 de glace bloque \u00e9galement l\u2019acc\u00e8s des pingouins \u00e0 la mer et \u00e0 leur source habituelle de nourriture.<\/p>\n

\"McMurdo
Le d\u00e9troit de McMurdo : notes explicatives<\/figcaption><\/figure>\n

Au cours des derni\u00e8res semaines, B-15A s\u2019est d\u00e9plac\u00e9 en direction d\u2019une langue de glace qui pointe dans la mer. D\u00e9but janvier, l\u2019\u00e9cart s\u2019\u00e9tait r\u00e9duit \u00e0 moins de 4 km.<\/p>\n

Les scientifiques pr\u00e9voyaient une collision de g\u00e9ants au moment o\u00f9 B-15A percuterait la langue du glacier flottant Drygalski. Contre toute attente, l\u2019iceberg a interrompu sa course et a m\u00eame recul\u00e9 l\u00e9g\u00e8rement.<\/p>\n

Cette immobilisation s\u2019expliquerait par le fait que B-15A toucherait le fond de cette mer peu profonde. Mais l\u2019influence des vents, des mar\u00e9es et la fonte de sa partie submerg\u00e9e permettront-ils finalement \u00e0 ce g\u00e9ant de reprendre sa course ?<\/p>\n

Quoi qu'il arrive, le radar d'Envisat \u2018 verra \u2019 \u00e0 travers les nuages de l'Antarctique pour offrir aux chercheurs une vue imprenable.<\/p>","protected":false},"excerpt":{"rendered":"

At the bottom of the world, an enormous, bottle-shaped iceberg has been threatening to demolish everything in its path. And ESA\u2019s Envisat spacecraft has been watching every move. Every summer, […]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"esa_banner_image":"https:\/\/www.esa.int\/var\/esa\/storage\/images\/esa_multimedia\/images\/2005\/01\/animated_flyover_based_on_envisat_data2\/17912591-2-eng-GB\/Animated_flyover_based_on_Envisat_data.jpg","esa_banner_description":"Animated flyover based on Envisat data","esa_banner_credit":"ESA","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2005\/01\/Animated_flyover_based_on_Envisat_data2","esa_external_url":"","esa_external_new_window":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":true},"categories":[42,10,66],"tags":[],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-1016","post","type-post","status-publish","format-standard","hentry","category-earth","category-learn","category-water-world"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/1016","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/comments?post=1016"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/1016\/revisions"}],"predecessor-version":[{"id":4798,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/1016\/revisions\/4798"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/media?parent=1016"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/categories?post=1016"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/tags?post=1016"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/panel?post=1016"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/language?post=1016"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/age?post=1016"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/duration?post=1016"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/resource_type?post=1016"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/audience?post=1016"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/wf_post_folders?post=1016"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}