{"id":987,"date":"2006-02-27T10:08:00","date_gmt":"2006-02-27T09:08:00","guid":{"rendered":"https:\/\/kids.esa.int\/greenland_s_melting_glaciers\/"},"modified":"2026-10-08T00:34:33","modified_gmt":"2026-10-07T22:34:33","slug":"greenland_s_melting_glaciers","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/fr\/greenland_s_melting_glaciers\/","title":{"rendered":"Les glaciers du Groenland fondent"},"content":{"rendered":"
\n

Le Groenland est presque enti\u00e8rement recouvert d'\u00e9normes plaques de glace. Malheureusement, les informations transmises par plusieurs satellites de l'ESA sugg\u00e8rent que cet \u00e9pais manteau blanc fond plus rapidement que pr\u00e9vu.<\/p>\n<\/div>\n

La derni\u00e8re \u00e9tude des glaciers du Groenland repose sur des donn\u00e9es recueillies aupr\u00e8s de quatre satellites en orbite autour de la Terre entre 1996 et 2005. Les satellites ERS-1, ERS-2 et Envisat de l'ESA et Radarsat-1 du Canada sont \u00e9quip\u00e9s de radars capables d'observer la surface de jour comme de nuit, m\u00eame en pr\u00e9sence d'une \u00e9paisse couverture nuageuse.<\/p>\n

Eric Rignot du Jet Propulsion Laboratory de la NASA et le scientifique Pannir Kanagaratnam de l'universit\u00e9 du Kansas ont entrepris de mesurer les changements d'\u00e9paisseur de la calotte glaciaire.<\/p>\n

\"Envisat
Image Envisat du glacier de Rinks Isbrae, au Groenland<\/figcaption><\/figure>\n

En analysant les donn\u00e9es satellitaires, les scientifiques ont d\u00e9couvert que les glaciers du sud et du centre du Groenland s'\u00e9coulent plus rapidement vers la mer. Avec le r\u00e9chauffement climatique, la quantit\u00e9 de glace qu'ils d\u00e9versent dans l'oc\u00e9an Atlantique a doubl\u00e9 au cours des dix derni\u00e8res ann\u00e9es. Les scientifiques estiment que le Groenland contribue \u00e0 hauteur d'environ 0,5 mm par an \u00e0 l'\u00e9l\u00e9vation mondiale du niveau de la mer, qui est d'environ 2,5 mm par an.<\/p>\n

De futures \u00e9tudes men\u00e9es \u00e0 l'aide de satellites tels qu'Envisat et ERS fourniront des informations essentielles sur l'\u00e9volution \u00e0 long terme de la couverture glaciaire et du niveau de la mer.<\/p>\n

Le Groenland est la plus grande \u00eele du monde. Sa calotte glaciaire s'\u00e9tend sur pr\u00e8s de 2 millions de km\u00b2 et pr\u00e9sente une \u00e9paisseur moyenne de 2,3 km. Si toute cette glace venait \u00e0 fondre, le niveau mondial des mers augmenterait de sept m\u00e8tres au maximum.<\/p>","protected":false},"excerpt":{"rendered":"

Despite its name, Greenland is almost entirely covered by a huge sheet of ice. However, data from several ESA satellites suggest that this white blanket is melting faster than expected. […]<\/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\/2006\/02\/envisat_image_of_south_greenland2\/17899607-2-eng-GB\/Envisat_image_of_South_Greenland.jpg","esa_banner_description":"Envisat image of South Greenland","esa_banner_credit":"ESA","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2006\/02\/Envisat_image_of_South_Greenland2","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-987","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\/987","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=987"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/987\/revisions"}],"predecessor-version":[{"id":4779,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/987\/revisions\/4779"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/media?parent=987"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/categories?post=987"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/tags?post=987"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/panel?post=987"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/language?post=987"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/age?post=987"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/duration?post=987"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/resource_type?post=987"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/audience?post=987"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/wf_post_folders?post=987"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}