{"id":602,"date":"2014-03-31T12:25:00","date_gmt":"2014-03-31T10:25:00","guid":{"rendered":"https:\/\/kids.esa.int\/protecting_our_planet_with_sentinel_1\/"},"modified":"2026-10-08T00:30:08","modified_gmt":"2026-10-07T22:30:08","slug":"protecting_our_planet_with_sentinel_1","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/fr\/protecting_our_planet_with_sentinel_1\/","title":{"rendered":"Sentinelle 1 va prot\u00e9ger notre plan\u00e8te"},"content":{"rendered":"<div class=\"lede\">\n<p>Le satellite Sentinelle 1 sera lanc\u00e9 le 3 avril prochain. Gr\u00e2ce \u00e0 son instrument radar de pointe capable de voir \u00e0 travers les nuages et de surveiller la surface du globe sans interruption, ce nouveau satellite d\u2019observation de la Terre contribuera \u00e0 pr\u00e9server notre plan\u00e8te.<\/p>\n<\/div>\n<p>Sentinelle 1 et ses puissants \u00ab yeux dans le ciel \u00bb seront plac\u00e9s en orbite \u00e0 700 kilom\u00e8tres d\u2019altitude. M\u00eame d\u2019aussi loin, ce satellite sera en mesure de d\u00e9tecter des objets avec une r\u00e9solution au sol de 5 m\u00e8tres, mais aussi de capturer des images de chaque point terrestre \u00e0 intervalles r\u00e9guliers de quelques jours.<\/p>\n<figure class=\"wp-block-image size-natural\" data-width=\"530\" data-credit=\"ESA\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2014\/03\/Floodest_forest\" 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\/2014\/03\/floodest_forest\/17901457-2-eng-GB\/Floodest_forest.jpg\" alt=\"\"><\/figure>\n<p>L\u2019une des principales t\u00e2ches de Sentinelle 1 consistera \u00e0 anticiper les catastrophes naturelles comme les inondations et les affaissements de terrain afin d\u2019assister les services de secours en situation de crise. Au cours des derni\u00e8res ann\u00e9es, de nombreux pays europ\u00e9ens ont subi des inondations d\u00e9vastatrices. Quand le temps est nuageux ou pluvieux, la plupart des satellites ne peuvent distinguer pr\u00e9cis\u00e9ment la surface terrestre. Sentinelle 1, qui sera capable de voir la surface de la Terre m\u00eame au travers des nuages et de la pluie, nous permettra d\u2019anticiper les inondations afin d\u2019aider les autorit\u00e9s locales \u00e0 s\u2019organiser en cas de mont\u00e9e des eaux.<\/p>\n<p>Le radar de Sentinelle 1 permet \u00e9galement de d\u00e9tecter les infimes changements de la surface terrestre afin de nous alerter de tout risque d\u2019\u00e9ruption volcanique ou d\u2019affaissement de terrain. Les autorit\u00e9s comp\u00e9tentes peuvent ainsi intervenir plus vite afin de prot\u00e9ger les populations locales. Par ailleurs, Sentinelle 1 suivra de pr\u00e8s la formation et l\u2019\u00e9volution des orages en mesurant la hauteur des vagues et la vitesse des vents, pour pr\u00e9venir plus vite les m\u00e9t\u00e9orologistes et sauver des vies humaines.<\/p>\n<p>La Terre compte plus de 7 milliards d\u2019habitants, dont les activit\u00e9s affectent l\u2019occupation du sol et, malheureusement, provoquent des dommages environnementaux. Sentinelle 1 va nous aider \u00e0 surveiller la destruction des for\u00eats afin de mettre en \u00e9vidence les changements d\u2019occupation du sol et les zones o\u00f9 les ressources d\u2019eau s\u2019amenuisent.<\/p>\n<figure class=\"wp-block-image size-large\" data-width=\"1024\" data-credit=\"ESA\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2014\/03\/Tanker\" 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\/2014\/03\/tanker\/17882770-2-eng-GB\/Tanker.jpg\" alt=\"\"><\/figure>\n<p>Sentinelle 1 am\u00e9liorera aussi les services de navigation maritime en effectuant une cartographie r\u00e9guli\u00e8re des glaces de mer. En mars 2011, des navires de commerce et des ferries transportant plus de 1 000 personnes se sont retrouv\u00e9s pi\u00e9g\u00e9s pendant plusieurs jours dans la zone septentrionale de la mer Baltique. Une pr\u00e9vision plus pr\u00e9cise de l'\u00e9paisseur des couches de glace devrait permettre d'\u00e9viter ce genre de situations.<\/p>\n<p>Sentinelle 1 contr\u00f4lera \u00e9galement les ph\u00e9nom\u00e8nes de pollution des eaux tels que les mar\u00e9es noires. Une d\u00e9tection plus performante de ces ph\u00e9nom\u00e8nes permettra d'alerter plus vite les garde-c\u00f4tes pour attraper les personnes rejetant ill\u00e9galement des hydrocarbures et r\u00e9agir rapidement en cas de d\u00e9versement accidentel.<\/p>\n<p>Une seule image radar de Sentinelle 1 pouvant couvrir plusieurs centaines de milliers de kilom\u00e8tres carr\u00e9s, la pr\u00e9vention des mar\u00e9es noires devrait sensiblement gagner en efficacit\u00e9 !<\/p>","protected":false},"excerpt":{"rendered":"<p>Sentinel 1 is scheduled for launch on 3 April. Thanks to a radar instrument that can see through clouds and observe the planet\u2019s surface 24\/7, this Earth observation satellite will [&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\/2014\/03\/sentinel\/17884287-2-eng-GB\/Sentinel.jpg","esa_banner_description":"","esa_banner_credit":"ESA","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2014\/03\/Sentinel","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":[42,10,59],"tags":[],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-602","post","type-post","status-publish","format-standard","hentry","category-earth","category-learn","category-natural-disasters"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/602","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=602"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/602\/revisions"}],"predecessor-version":[{"id":4573,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/602\/revisions\/4573"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/media?parent=602"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/categories?post=602"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/tags?post=602"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/panel?post=602"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/language?post=602"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/age?post=602"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/duration?post=602"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/resource_type?post=602"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/audience?post=602"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/wf_post_folders?post=602"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}