{"id":451,"date":"2017-03-06T12:08:00","date_gmt":"2017-03-06T11:08:00","guid":{"rendered":"https:\/\/kids.esa.int\/satellite_images_warn_antarctic_scientists_to_evacuate_their_base\/"},"modified":"2026-10-08T00:28:21","modified_gmt":"2026-10-07T22:28:21","slug":"satellite_images_warn_antarctic_scientists_to_evacuate_their_base","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/fr\/satellite_images_warn_antarctic_scientists_to_evacuate_their_base\/","title":{"rendered":"Des images satellitaires entra\u00eenent l\u2019\u00e9vacuation de scientifiques dans l\u2019Antarctique"},"content":{"rendered":"<div class=\"lede\">\n<p>Le continent Antarctique abrite un laboratoire de haute technologie baptis\u00e9 Halley VI. Des \u00e9quipes scientifiques y \u00e9tudient des probl\u00e8mes majeurs, comme le r\u00e9chauffement climatique ou l\u2019\u00e9l\u00e9vation du niveau des oc\u00e9ans. Deux satellites de l\u2019ESA, Sentinelle 1 et Sentinelle 2, ont r\u00e9cemment observ\u00e9 la r\u00e9gion qui entoure la base de recherche Halley VI. Ils ont d\u00e9couvert une immense faille se d\u00e9veloppant dans la glace ! Cette derni\u00e8re a \u00e9t\u00e9 baptis\u00e9e \u00ab Faille d\u2019Halloween \u00bb, car sa d\u00e9couverte initiale remonte \u00e0 octobre 2016. La vie des scientifiques \u00e9tant en danger, la d\u00e9cision a \u00e9t\u00e9 prise d\u2019\u00e9vacuer la base Halley VI et de la fermer pour tout l\u2019hiver.<\/p>\n<\/div>\n<p>De petites failles apparaissent r\u00e9guli\u00e8rement sur les plateformes glaci\u00e8res, en entra\u00eenant avec elle la chute de blocs de glace dans la mer qui se transforment alors en icebergs. Mais la taille de la Faille d\u2019Halloween rep\u00e9r\u00e9e par les satellites Sentinelle \u00e9tait bien plus importante, et elle pouvait s\u2019agrandir jusqu\u2019\u00e0 600 m\u00e8tres chaque jour ! Le laboratoire Halley VI a \u00e9t\u00e9 con\u00e7u pour pouvoir \u00eatre d\u00e9plac\u00e9 rapidement afin d\u2019\u00e9viter les failles dans les plateformes glaciaires, mais la structure en zigzag de la Faille d\u2019Halloween rendait toute pr\u00e9vision extr\u00eamement difficile. La vie des scientifiques \u00e9tant menac\u00e9e, ces derniers ont d\u00fb \u00eatre \u00e9vacu\u00e9s pour pr\u00e9server leur s\u00e9curit\u00e9.<\/p>\n<figure class=\"wp-block-image size-large\" data-width=\"1920\" data-credit=\"ESA\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2017\/02\/Halley_VI\" data-licence=\"ESA Standard Licence\" data-licence-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Terms_and_conditions_of_use_of_images_and_videos_available_on_the_esa_website\"><img decoding=\"async\" loading=\"lazy\" style=\"max-width:100%;height:auto\" src=\"https:\/\/www.esa.int\/var\/esa\/storage\/images\/esa_multimedia\/images\/2017\/02\/halley_vi\/18248141-2-eng-GB\/Halley_VI.jpg\" alt=\"The entire Halley VI station has now been evacuated\"><figcaption>L'ensemble de la station Halley VI a d\u00e9sormais \u00e9t\u00e9 \u00e9vacu\u00e9<\/figcaption><\/figure>\n<p>Pendant l'\u00e9t\u00e9 antarctique, environ 70 personnes r\u00e9sident et travaillent sur la base de recherche Halley VI. Moins de 20 personnes y restent pendant les mois d\u2019hiver, quand les temp\u00e9ratures peuvent atteindre -55 \u00b0C. C\u2019est le tout premier hiver que la base est compl\u00e8tement ferm\u00e9e !<\/p>\n<p>Les images transmises par les satellites Sentinelle n\u2019ont pas uniquement contribu\u00e9 \u00e0 sauver des vies : elles nous ont \u00e9galement permis d\u2019en savoir plus sur la formation, le d\u00e9veloppement et la fragilisation des plateformes glaciaires.<\/p>\n<p>Fait int\u00e9ressant : Sentinel-1 est \u00e9quip\u00e9 d'un syst\u00e8me d'imagerie radar qui lui permet de prendre des images m\u00eame pendant les mois sombres de l'hiver, lorsque la luminosit\u00e9 est insuffisante pour r\u00e9aliser des photos classiques.<\/p>","protected":false},"excerpt":{"rendered":"<p>Deep in Antarctica is a cutting-edge laboratory called Halley VI. From here, scientists study global problems such as climate change and rising sea-levels. Two ESA satellites, Sentinel-1 and Sentinel-2, were [&hellip;]<\/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\/2017\/02\/sentinel-1_monitoring\/17884546-2-eng-GB\/Sentinel-1_monitoring.png","esa_banner_description":"Sentinel satellites scan the Earth","esa_banner_credit":"ESA","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2017\/02\/Sentinel-1_monitoring","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":[26],"tags":[],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-451","post","type-post","status-publish","format-standard","hentry","category-news"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/451","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=451"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/451\/revisions"}],"predecessor-version":[{"id":4487,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/451\/revisions\/4487"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/media?parent=451"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/categories?post=451"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/tags?post=451"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/panel?post=451"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/language?post=451"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/age?post=451"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/duration?post=451"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/resource_type?post=451"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/audience?post=451"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/wf_post_folders?post=451"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}