{"id":5762,"date":"2011-04-11T21:41:29","date_gmt":"2011-04-11T19:41:29","guid":{"rendered":"http:\/\/www.laterredufutur.com\/accueil\/?p=5762"},"modified":"2015-04-15T21:42:52","modified_gmt":"2015-04-15T19:42:52","slug":"une-poche-deau-douce-menace-le-gs","status":"publish","type":"post","link":"https:\/\/www.laterredufutur.com\/accueil\/une-poche-deau-douce-menace-le-gs\/","title":{"rendered":"Une poche d&rsquo;eau douce menace le GS"},"content":{"rendered":"<div class=\"1665f18d14f35dd9e7566e1a8ac9a3e9\" data-index=\"1\" style=\"float: none; margin:10px 0 10px 0; text-align:center;\">\n<script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js\"><\/script>\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:block; text-align:center;\"\r\n     data-ad-layout=\"in-article\"\r\n     data-ad-format=\"fluid\"\r\n     data-ad-client=\"ca-pub-2860849627502538\"\r\n     data-ad-slot=\"3019501113\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script>\n<\/div>\n<p align=\"justify\"><span class=\"Apple-style-span\"><span style=\"font-size: small;\">Une gigantesque poche d&rsquo;eau douce dans l&rsquo;oc\u00e9an Arctique pourrait gagner l&rsquo;Atlantique et potentiellement affecter le Gulf Stream, courant oc\u00e9anique qui contribue de mani\u00e8re substantielle au climat temp\u00e9r\u00e9 de l&rsquo;Europe de l&rsquo;Ouest, ont d\u00e9clar\u00e9 mardi des oc\u00e9anographes \u00e0 l&rsquo;Associated Press.<\/p>\n<p>Cette accumulation inhabituelle s&rsquo;explique par une hausse des volumes d&rsquo;eau rejet\u00e9s par des fleuves du Canada et de Sib\u00e9rie et par la fonte de la banquise, deux cons\u00e9quences du r\u00e9chauffement climatique, ont pr\u00e9cis\u00e9 les chercheurs.<br \/>\n<\/span><\/span><\/p>\n<p>Si elle gagne l&rsquo;Atlantique, cette eau douce pourrait dans le pire des cas modifier le Gulf Stream, explique Laura De Steur, de l&rsquo;Institut royal des Pays-Bas pour la recherche marine. Selon le chercheur allemand Benjamin Rabe, de l&rsquo;Institut Alfred Wegener, la teneur en eau douce de l&rsquo;oc\u00e9an Arctique a augment\u00e9 de 20% depuis les ann\u00e9es 1990.<\/p><div class=\"1665f18d14f35dd9e7566e1a8ac9a3e9\" data-index=\"2\" style=\"float: none; margin:10px 0 10px 0; text-align:center;\">\n<script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js\"><\/script>\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:block; text-align:center;\"\r\n     data-ad-layout=\"in-article\"\r\n     data-ad-format=\"fluid\"\r\n     data-ad-client=\"ca-pub-2860849627502538\"\r\n     data-ad-slot=\"3019501113\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script>\n<\/div>\n\n<p align=\"justify\"><span class=\"Apple-style-span\"><span style=\"font-size: small;\"><br \/>\nLe d\u00e9bit accru des grands fleuves septentrionaux \u00ab\u00a0pourrait potentiellement affecter la circulation oc\u00e9anique \u00e0 grande \u00e9chelle dans l&rsquo;Atlantique\u00a0\u00bb, explique Mme De Steur. \u00ab\u00a0c&rsquo;est important pour nous en Europe occidentale car notre climat d\u00e9pend en grande partie\u00a0\u00bb du Gulf Stream.<\/p>\n<p>Ce courant oc\u00e9anique pourrait \u00eatre affect\u00e9 si cette r\u00e9serve d&rsquo;eau douce rejoignait l&rsquo;Atlantique, soulignent Mme De Steur et M. Rabe. Pour l&rsquo;instant, elle est maintenue dans l&rsquo;Arctique par les vents, dont le sens de rotation g\u00e9n\u00e9ral -ils tournent dans le sens des aiguilles d&rsquo;une montre- n&rsquo;a pas chang\u00e9 depuis 12 ans, une p\u00e9riode inhabituellement longue. Normalement, la direction des vents se modifie \u00e0 intervalle de cinq \u00e0 dix ans.<\/p>\n<p>\u00ab\u00a0Il est important de surveiller\u00a0\u00bb cette accumulation d&rsquo;eau douce \u00ab\u00a0pour voir si elle peut gagner l&rsquo;Atlantique, o\u00f9 elle pourrait potentiellement affecter le Gulf Stream et la circulation thermohaline\u00a0\u00bb, souligne Mme De Steur. source : AP<\/span><\/span><\/p>\n<p class=\"bawpvc-ajax-counter\" data-id=\"5762\">(178)<\/p>\n<!--CusAds0-->\n<div style=\"font-size: 0px; height: 0px; line-height: 0px; margin: 0; padding: 0; clear: both;\"><\/div>","protected":false},"excerpt":{"rendered":"<p>Une gigantesque poche d&rsquo;eau douce dans l&rsquo;oc\u00e9an Arctique pourrait gagner l&rsquo;Atlantique et potentiellement affecter le Gulf Stream, courant oc\u00e9anique qui&#8230;<\/p>\n","protected":false},"author":1,"featured_media":3056,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0,"ngg_post_thumbnail":0,"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"Une poche d'eau douce menace le GS","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[23],"tags":[298,1030,393,396,703,241,4087],"class_list":["post-5762","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-circulation-oceanique","tag-arctique","tag-eau-douce","tag-fonte","tag-gulf-stream","tag-impact","tag-ocean","tag-poche","wpcat-23-id"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/04\/gulfstream.jpg?fit=250%2C215&ssl=1","jetpack_shortlink":"https:\/\/wp.me\/p631RN-1uW","jetpack-related-posts":[{"id":748,"url":"https:\/\/www.laterredufutur.com\/accueil\/menace-sur-le-climat-europeen-le-courant-oceanique-menace-a-court-terme\/","url_meta":{"origin":5762,"position":0},"title":"Danger sur le climat Europ\u00e9en, le courant oc\u00e9anique menac\u00e9 \u00e0 court-terme","author":"Admin","date":"7 f\u00e9vrier 2012","format":false,"excerpt":"L\u2019eau douce qui s\u2019accumule dans l\u2019Oc\u00e9an Arctique pourrait bien finir par refroidir l\u2019Europe et annuler les effets du courant oc\u00e9anique du Gulf Stream, qui permet \u00e0 l\u2019Europe de maintenir des temp\u00e9ratures relativement douces... R\u00e9colt\u00e9es, depuis 15 ans maintenant, les donn\u00e9es des satellites europ\u00e9ens ERS-2 qui ont servi \u00e0 mesurer le\u2026","rel":"","context":"Dans &quot;Courants Marins&quot;","block_context":{"text":"Courants Marins","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/circulation-oceanique\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/wordpress\/wp-content\/uploads\/2012\/02\/arctic_water_bulge.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":4407,"url":"https:\/\/www.laterredufutur.com\/accueil\/et-si-le-gulf-stream-sarretait\/","url_meta":{"origin":5762,"position":1},"title":"Et si le Gulf Stream s\u2019arr\u00eatait ?","author":"Admin","date":"2 mai 2008","format":false,"excerpt":"Le Gulf Stream, v\u00e9ritable fleuve marin apporte la vie et la chaleur. Il pourrait bient\u00f4t avoir quelques probl\u00e8mes li\u00e9s au r\u00e9chauffement climatique. Bien avant les conquistadores, les s\u00e9minoles connaissaient l\u2019existence de ce courant. Bien plus tard, l\u2019infatigable Benjamin Franklin en fit une carte d\u00e9taill\u00e9e. Le Gulf Stream est un v\u00e9ritable\u2026","rel":"","context":"Dans &quot;Courants Marins&quot;","block_context":{"text":"Courants Marins","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/circulation-oceanique\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/04\/gulfstream05051.jpg?fit=350%2C264&ssl=1&resize=350%2C200","width":350,"height":200},"classes":[]},{"id":2526,"url":"https:\/\/www.laterredufutur.com\/accueil\/le-gulf-stream-ralentit-en-raison-de-la-fonte-de-la-calotte-glaciaire-du-groenland\/","url_meta":{"origin":5762,"position":2},"title":"Le Gulf Stream ralentit en raison de la fonte de la calotte glaciaire du Groenland","author":"Admin","date":"26 mars 2015","format":false,"excerpt":"Selon les scientifiques, la fonte progressive de la calotte glaciaire du Groenland, en rapport avec le r\u00e9chauffement climatique, ralentit la circulation du Gulf Stream. Le r\u00e9chauffement de la plan\u00e8te par l'homme est consid\u00e9r\u00e9 comme un acteur majeur de l'amincissement et de la disparition de la glace dans le monde entier.\u2026","rel":"","context":"Dans &quot;Courants Marins&quot;","block_context":{"text":"Courants Marins","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/circulation-oceanique\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/03\/.._spaw_images_gulfstream.jpeg?fit=230%2C223&ssl=1&resize=350%2C200","width":350,"height":200},"classes":[]},{"id":2670,"url":"https:\/\/www.laterredufutur.com\/accueil\/limportance-de-la-banquise\/","url_meta":{"origin":5762,"position":3},"title":"L&rsquo;importance de la Banquise","author":"Admin","date":"28 janvier 2005","format":false,"excerpt":"L'Europe poss\u00e8de un climat agr\u00e9able jusqu'\u00e0 des latitudes proche du cercle polaire. Ainsi on peut observer des vaches en Norv\u00e8ge. On peut voir des hivers en Grande Bretagne et en France qui ne ressemblent en aucun point \u00e0 ceux du Canada et de New York. Mais au del\u00e0 du Gulf\u2026","rel":"","context":"Dans &quot;Climat&quot;","block_context":{"text":"Climat","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/climat\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/04\/polenord.jpg?fit=300%2C206&ssl=1&resize=350%2C200","width":350,"height":200},"classes":[]},{"id":3055,"url":"https:\/\/www.laterredufutur.com\/accueil\/arret-du-gulf-stream-en-bref\/","url_meta":{"origin":5762,"position":4},"title":"Arr\u00eat du Gulf Stream en bref","author":"Admin","date":"21 septembre 2005","format":false,"excerpt":"Torbj\u00f6rn T\u00f6rnqvist est sp\u00e9cialis\u00e9 en sciences de la terre \u00e0 l\u2019Universit\u00e9 de Chicago en Illinois. C\u2019est en analysant des pr\u00e9l\u00e8vements de tourbe (datation des d\u00e9p\u00f4ts au radiocarbone\/\u00e9valuation de la tol\u00e9rance v\u00e9g\u00e9tale au sel) r\u00e9alis\u00e9s dans les mar\u00e9cages du delta du Mississipi en Louisiane pour une \u00e9tude sur les modifications du\u2026","rel":"","context":"Dans &quot;Courants Marins&quot;","block_context":{"text":"Courants Marins","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/circulation-oceanique\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/04\/gulfstream.jpg?fit=250%2C215&ssl=1&resize=350%2C200","width":350,"height":200},"classes":[]},{"id":3942,"url":"https:\/\/www.laterredufutur.com\/accueil\/dossier-n3-les-courants-marins\/","url_meta":{"origin":5762,"position":5},"title":"Dossier N\u00b03 : Les Courants Marins","author":"Admin","date":"10 avril 2007","format":false,"excerpt":"Voici un dossier, en\u00a04 parties qui seront publi\u00e9es sur la Terre du Futur, transmis par Fifi321fth (Thomas), pass\u00e9 au lyc\u00e9e Sacr\u00e9-Coeur \u00e0 Reims. Thomas L., Enguerran D., Juliette M. Dossier Exclusif sur les Courants Marins et de ce qui en r\u00e9sulte. Ici 3 eme partie. Des mesures satellitaires ont r\u00e9v\u00e9l\u00e9\u2026","rel":"","context":"Dans &quot;Climat&quot;","block_context":{"text":"Climat","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/climat\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/laterredufutur.com\/spaw\/images\/courant15.jpg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/laterredufutur.com\/spaw\/images\/courant15.jpg?resize=350%2C200 1x, https:\/\/i0.wp.com\/laterredufutur.com\/spaw\/images\/courant15.jpg?resize=525%2C300 1.5x"},"classes":[]}],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/5762","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/comments?post=5762"}],"version-history":[{"count":1,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/5762\/revisions"}],"predecessor-version":[{"id":5763,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/5762\/revisions\/5763"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/media\/3056"}],"wp:attachment":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/media?parent=5762"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/categories?post=5762"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/tags?post=5762"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}