{"id":94554,"date":"2025-02-01T16:07:34","date_gmt":"2025-02-01T16:07:34","guid":{"rendered":"https:\/\/www.africa-press.net\/cotedivoire\/politique\/un-fragment-de-19-km-se-detache-du-plus-grand-iceberg-du-monde"},"modified":"2025-02-01T16:07:34","modified_gmt":"2025-02-01T16:07:34","slug":"un-fragment-de-19-km-se-detache-du-plus-grand-iceberg-du-monde","status":"publish","type":"post","link":"https:\/\/www.africa-press.net\/cotedivoire\/toutes-les-actualites\/un-fragment-de-19-km-se-detache-du-plus-grand-iceberg-du-monde","title":{"rendered":"Un fragment de 19 km se d\u00e9tache du plus grand iceberg du monde"},"content":{"rendered":"

Africa-Press – C\u00f4te d’Ivoire. <\/strong><\/span>Pour la premie\u0300re fois, un fragment majeur, presque aussi grand que Paris, s’est de\u0301tache\u0301e du plus grand iceberg du monde dont la de\u0301rive depuis l’Antarctique est traque\u0301e par les satellites, ont indique\u0301 vendredi des scientifiques a\u0300 l’AFP.<\/p>\n

L’iceberg le plus grand du monde est un immense plateau de glace aujourd’hui long de 80 km, d’une superficie de 3.360 kilome\u0300tres carre\u0301s, qui s’est de\u0301solidarise\u0301 de l’Antarctique en 1986. Apre\u0300s e\u0302tre reste\u0301 des de\u0301cennies sur place, il se dirige lentement depuis de\u0301cembre vers l’i\u0302le britannique de Ge\u0301orgie du Sud, plus au nord, emporte\u0301 par de puissants courants oce\u0301aniques.<\/p>\n

Jusqu’ici, ce colosse de glace connu sous le nom d’A23a e\u0301tait pluto\u0302t reste\u0301 intact.<\/p>\n

Mais des images vendredi d’un satellite europe\u0301en analyse\u0301es par l’AFP et confirme\u0301es par deux scientifiques montrent qu’une portion allonge\u0301e d’environ 19 km de long et 6 km au plus large, certes minime compare\u0301e a\u0300 l’immensite\u0301 de l’iceberg parent, s’est de\u0301tache\u0301e. Ce fragment, de presque 79 km2 selon les mesures satellitaires, de\u0301rive de\u0301sormais lui aussi dans les eaux glaciales.<\/p>\n

\u00ab\u00a0C’est sans aucun doute la premie\u0300re tranche significative de l’iceberg qui est apparue\u00a0\u00bb a\u0300 ce jour, dit a\u0300 l’AFP l’oce\u0301anographe Andrew Meijers, du British Antarctic Survey, qui suit de pre\u0300s la remonte\u0301e de l’iceberg.<\/p>\n

Soledad Tiranti, glaciologue qui se trouve en ce moment a\u0300 bord du brise-glace ARA Almirante Iri\u0301zar de la Marine argentine, a e\u0301galement confirme\u0301 a\u0300 l’AFP qu’un morceau s’e\u0301tait \u00ab\u00a0de\u0301tache\u0301\u00a0\u00bb.<\/p>\n

Selon Andrew Meijers, les icebergs sont traverse\u0301s de fractures profondes et, bien que ce spe\u0301cimen monumental ait re\u0301tre\u0301ci au fil du temps et perdu auparavant un morceau beaucoup plus petit, il avait \u00ab\u00a0bien re\u0301siste\u0301\u00a0\u00bb. \u00ab\u00a0C’est un signe que ces failles commencent a\u0300 se briser\u00a0\u00bb, estime-t-il.<\/p>\n

Dans le passe\u0301, d’autres icebergs ge\u0301ants se sont effondre\u0301s \u00ab\u00a0relativement rapidement, en l’espace de plusieurs semaines\u00a0\u00bb, une fois qu’ils avaient commence\u0301 a\u0300 perdre de gros morceaux.<\/p>\n

Reste qu’il est difficile de dire si cette fragmentation est la preuve d’un changement beaucoup plus important en cours.<\/p>\n

\u00ab\u00a0La fac\u0327on dont ces choses se de\u0301sagre\u0300gent n’est pas vraiment une science exacte… il est vraiment difficile de dire s’il va partir en mille morceaux ou s’il va encore rester intact\u00a0\u00bb, explique Andrew Meijers.<\/p>\n

Il est selon lui peu probable que la trajectoire de A23 vers la Ge\u0301orgie du Sud, une zone d’alimentation cruciale pour des espe\u0300ces d’otaries et de manchots, change a\u0300 cause de la perte de ce fragment.<\/p>\n

Mais une fragmentation supple\u0301mentaire re\u0301duirait \u00ab\u00a0la menace pour la faune\u00a0\u00bb, car les animaux pourraient alors man\u0153uvrer plus facilement dans l’oce\u0301an entre des blocs de glace plus petits, pour trouver a\u0300 manger, ajoute l’oce\u0301anographe.<\/p>\n

Selon Soledad Tiranti, l’iceberg devrait continuer sa route vers le nord, mais sa trajectoire exacte de\u0301pendra de l’influence des courants.<\/p>\n

Pour plus d’informations et d’analyses sur la C\u00f4te d’Ivoire<\/span>, suivez Africa-Press<\/span><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"

Africa-Press – C\u00f4te d’Ivoire. Pour la premie\u0300re fois, un fragment majeur, presque aussi grand que Paris, s’est de\u0301tache\u0301e du plus grand iceberg du monde dont la de\u0301rive depuis l’Antarctique est traque\u0301e par les satellites, ont indique\u0301 vendredi des scientifiques a\u0300 l’AFP. L’iceberg le plus grand du monde est un immense plateau de glace aujourd’hui long […]<\/p>\n","protected":false},"author":82,"featured_media":94553,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[22,10],"tags":[37],"class_list":["post-94554","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-divers","category-toutes-les-actualites","tag-cote-divoire-2"],"yoast_head":"\nUn fragment de 19 km se d\u00e9tache du plus grand iceberg du monde - C\u00f4te d'Ivoire<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.africa-press.net\/cotedivoire\/politique\/un-fragment-de-19-km-se-detache-du-plus-grand-iceberg-du-monde\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Un fragment de 19 km se d\u00e9tache du plus grand iceberg du monde\" \/>\n<meta property=\"og:description\" content=\"Africa-Press – C\u00f4te d’Ivoire. Pour la premie\u0300re fois, un fragment majeur, presque aussi grand que Paris, s’est de\u0301tache\u0301e du plus grand iceberg du monde dont la de\u0301rive depuis l’Antarctique est traque\u0301e par les satellites, ont indique\u0301 vendredi des scientifiques a\u0300 l’AFP. 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