{"id":3427,"date":"2006-04-24T17:54:22","date_gmt":"2006-04-24T15:54:22","guid":{"rendered":"http:\/\/www.laterredufutur.com\/accueil1\/?p=3427"},"modified":"2015-04-10T17:56:33","modified_gmt":"2015-04-10T15:56:33","slug":"des-rivieres-relieraient-des-lacs-sous-la-glace-de-lantarctique","status":"publish","type":"post","link":"https:\/\/www.laterredufutur.com\/accueil\/des-rivieres-relieraient-des-lacs-sous-la-glace-de-lantarctique\/","title":{"rendered":"Des rivi\u00e8res relieraient des lacs sous la glace de l&rsquo;Antarctique"},"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><span style=\"font-size: small;\">LONDRES (Reuters) &#8211; Des rivi\u00e8res larges comme la Tamise, qui relient sans doute des lacs subglaciaires, ont \u00e9t\u00e9 d\u00e9couvertes sous la calotte du continent antarctique.<\/span><\/p>\n<p align=\"justify\"><span style=\"font-size: small;\">Les chercheurs britanniques qui ont mis au jour le syst\u00e8me de connexions expliquant le d\u00e9placement de l&rsquo;eau sur des centaines de kilom\u00e8tres estiment que leur d\u00e9couverte remet en question l&rsquo;id\u00e9e que les lacs subglaciaires ont \u00e9volu\u00e9 ind\u00e9pendamment les uns des autres et pourraient abriter des formes de vie primitives.<\/span><\/p>\n<p align=\"justify\"><span style=\"font-size: small;\">\u00ab\u00a0Jusque-l\u00e0, on pensait que l&rsquo;eau se d\u00e9pla\u00e7ait sous la glace par de tr\u00e8s lentes infiltrations\u00a0\u00bb, a expliqu\u00e9 le professeur Duncan Wingham, de l&rsquo;University College London (UCL), qui a dirig\u00e9 l&rsquo;\u00e9quipe de chercheurs.<\/span><\/p>\n<p align=\"justify\"><span style=\"font-size: small;\">\u00ab\u00a0Mais les nouvelles donn\u00e9es montrent que, occasionnellement, les lacs subglaciaires &lsquo;sautent&rsquo; comme des bouchons de champagne, lib\u00e9rant des inondations qui se propagent sur de tr\u00e8s grandes distances\u00a0\u00bb.<\/span><\/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 style=\"font-size: small;\">Les scientifiques projettent de forer la glace pour pr\u00e9lever des \u00e9chantillons d&rsquo;eau de ces lacs mais craignent, ce faisant, de les contaminer avec de nouveaux microbes.<\/span><\/p>\n<p align=\"justify\"><span style=\"font-size: small;\">\u00ab\u00a0Nous pensions que ces lacs \u00e9taient des laboratoires biologiques isol\u00e9s. Nous devons d\u00e9sormais revoir notre fa\u00e7on de penser\u00a0\u00bb, a-t-il ajout\u00e9 dans un communiqu\u00e9.<\/span><\/p>\n<p align=\"justify\"><span style=\"font-size: small;\">Ces recherches, qui sont expos\u00e9es dans la revue scientifique Nature, signifient \u00e9galement que l&rsquo;eau des lacs antarctiques, qui ont \u00e9t\u00e9 d\u00e9couverts dans les ann\u00e9es 1960, ont pu se d\u00e9verser dans l&rsquo;oc\u00e9an, par le pass\u00e9, et que cela est susceptible de se produire de nouveau.<\/span><\/p>\n<p align=\"justify\"><span style=\"font-size: small;\">Environ 150 lacs subglaciaires ont \u00e9t\u00e9 d\u00e9couverts en Antarctique mais les chercheurs pensent qu&rsquo;ils doivent se chiffrer au total en milliers. Le lac Vostok, qui a 15 \u00e0 20 millions d&rsquo;ann\u00e9es, serait le plus ancien de tous.<\/span><\/p>\n<p>Sources : Reuters \/ <a href=\"http:\/\/www.boursier.com\/\">http:\/\/www.boursier.com\/<\/a><\/p>\n<p class=\"bawpvc-ajax-counter\" data-id=\"3427\">(193)<\/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>LONDRES (Reuters) &#8211; Des rivi\u00e8res larges comme la Tamise, qui relient sans doute des lacs subglaciaires, ont \u00e9t\u00e9 d\u00e9couvertes sous&#8230;<\/p>\n","protected":false},"author":1,"featured_media":3428,"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_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":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[31],"tags":[264,1252,2500,2891,2890,1330,2892],"class_list":["post-3427","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-divers","tag-antarctic","tag-antarctique","tag-lac-vostok","tag-lacs","tag-riviere","tag-source","tag-subglaciaires","wpcat-31-id"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/04\/Antarctiquesource.jpg?fit=250%2C165&ssl=1","jetpack_shortlink":"https:\/\/wp.me\/p631RN-Th","jetpack-related-posts":[{"id":12015,"url":"https:\/\/www.laterredufutur.com\/accueil\/un-nouveau-lac-subglaciaire-geant-decouvert-en-antarctique\/","url_meta":{"origin":3427,"position":0},"title":"Un nouveau lac subglaciaire g\u00e9ant d\u00e9couvert en Antarctique","author":"Admin","date":"29 avril 2016","format":false,"excerpt":"Apr\u00e8s le lac Vostok, des chercheurs pourraient avoir d\u00e9couvert le second plus grand lac subglaciaire du continent blanc. Les scientifiques ont l\u2019espoir que celui-ci contienne des traces de vie pr\u00e9historique. L\u2019activit\u00e9 g\u00e9othermale en dessous du lac l\u2019aurait emp\u00each\u00e9 de geler et aurait permis qu\u2019il reste sous forme liquide. Situ\u00e9e \u00e0\u2026","rel":"","context":"Dans &quot;Divers&quot;","block_context":{"text":"Divers","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/divers\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2016\/04\/glace-antarctique.jpg?fit=1000%2C541&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2016\/04\/glace-antarctique.jpg?fit=1000%2C541&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2016\/04\/glace-antarctique.jpg?fit=1000%2C541&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2016\/04\/glace-antarctique.jpg?fit=1000%2C541&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":17892,"url":"https:\/\/www.laterredufutur.com\/accueil\/des-scientifiques-decouvrent-des-creatures-etranges-dans-un-lac-perdu-sous-glaciaire-de-lantarctique\/","url_meta":{"origin":3427,"position":1},"title":"Des scientifiques d\u00e9couvrent des cr\u00e9atures \u00e9tranges dans un lac perdu sous glaciaire de l&rsquo;antarctique","author":"Admin","date":"21 janvier 2019","format":false,"excerpt":"Une vie organique a \u00e9t\u00e9 d\u00e9couverte au fond du lac subglaciaire Mercer en r\u00e9gion antarctique par les scientifiques du projet international SALSA. Ils aspirent \u00e0 trouver d\u2019autres formes de vie, plus \u00e9volu\u00e9es, dans un des \u00e9cosyst\u00e8mes les plus isol\u00e9s de la plan\u00e8te. John Priscu, scientifique \u00e0 l'Universit\u00e9 du Montana et\u2026","rel":"","context":"Dans &quot;Divers&quot;","block_context":{"text":"Divers","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/divers\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/01\/AntarcticaHiddenLakeCreatures-salsa-antarctique-2.jpg?fit=1200%2C901&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/01\/AntarcticaHiddenLakeCreatures-salsa-antarctique-2.jpg?fit=1200%2C901&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/01\/AntarcticaHiddenLakeCreatures-salsa-antarctique-2.jpg?fit=1200%2C901&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/01\/AntarcticaHiddenLakeCreatures-salsa-antarctique-2.jpg?fit=1200%2C901&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/01\/AntarcticaHiddenLakeCreatures-salsa-antarctique-2.jpg?fit=1200%2C901&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":15421,"url":"https:\/\/www.laterredufutur.com\/accueil\/de-nouveaux-paysages-explores-sous-lantarctique\/","url_meta":{"origin":3427,"position":2},"title":"De nouveaux paysages explor\u00e9s sous l&rsquo;Antarctique","author":"Admin","date":"21 juin 2017","format":false,"excerpt":"Il y a des millions d'ann\u00e9es, l'Antarctique avait un climat tropical et \u00e9tait aussi chaud\u00a0que\u00a0la Californie et la\u00a0Floride de nos jours. Aujourd'hui, ce continent glac\u00e9\u00a0est presque enti\u00e8rement recouvert de couches de glace \u00e9paisse, mais un environnement bien diff\u00e9rent\u00a0a exist\u00e9. \u00c0 l'aide de la technologie des radars et des satellites a\u00e9roport\u00e9s,\u2026","rel":"","context":"Dans &quot;Arch\u00e9ologie&quot;","block_context":{"text":"Arch\u00e9ologie","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/archeologie\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2017\/06\/antarctique-sans-glace.jpg?fit=676%2C450&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2017\/06\/antarctique-sans-glace.jpg?fit=676%2C450&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2017\/06\/antarctique-sans-glace.jpg?fit=676%2C450&ssl=1&resize=525%2C300 1.5x"},"classes":[]},{"id":4277,"url":"https:\/\/www.laterredufutur.com\/accueil\/un-volcan-fait-fondre-les-glaciers-en-antarctique\/","url_meta":{"origin":3427,"position":3},"title":"Un volcan fait fondre les glaciers en Antarctique","author":"Admin","date":"28 janvier 2008","format":false,"excerpt":"Si la calotte polaire est plut\u00f4t stable dans la partie est de l'Antarctique, il n'en va pas de m\u00eame \u00e0 l'ouest (NASA). Un volcan subglaciaire serait en partie \u00e0 l'origine de la diminution de l'\u00e9paisseur de la calotte \u00e0 l'ouest du continent.Des glaciologues britanniques ont d\u00e9couvert un volcan sous un\u2026","rel":"","context":"Dans &quot;Seismes\/Volcans&quot;","block_context":{"text":"Seismes\/Volcans","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/seismes-et-volcans\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/04\/antarctique1.jpg?fit=493%2C271&ssl=1&resize=350%2C200","width":350,"height":200},"classes":[]},{"id":24183,"url":"https:\/\/www.laterredufutur.com\/accueil\/la-decouverte-dun-monde-cache-sous-la-glace-de-lantarctique-fait-sauter-de-joie-les-scientifiques\/","url_meta":{"origin":3427,"position":4},"title":"La d\u00e9couverte d&rsquo;un \u00ab\u00a0monde cach\u00e9\u00a0\u00bb sous la glace de l&rsquo;Antarctique fait sauter de joie les scientifiques","author":"Admin","date":"28 juin 2022","format":false,"excerpt":"L'\u00e9cosyst\u00e8me secret a \u00e9t\u00e9 d\u00e9couvert \u00e0 plus de 500m sous la surface. Un \u00e9cosyst\u00e8me jamais observ\u00e9 auparavant se cache dans une rivi\u00e8re souterraine situ\u00e9e profond\u00e9ment sous la surface glac\u00e9e de l'Antarctique. Des chercheurs ont r\u00e9cemment mis en lumi\u00e8re ce \"monde cach\u00e9\", r\u00e9v\u00e9lant une caverne sombre et d\u00e9chiquet\u00e9e remplie d'essaims de\u2026","rel":"","context":"Dans &quot;Monde Futur&quot;","block_context":{"text":"Monde Futur","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/monde-futur\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2022\/06\/Ronne-Ice-Shelf-in-Antarctica.jpg?fit=1100%2C850&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2022\/06\/Ronne-Ice-Shelf-in-Antarctica.jpg?fit=1100%2C850&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2022\/06\/Ronne-Ice-Shelf-in-Antarctica.jpg?fit=1100%2C850&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2022\/06\/Ronne-Ice-Shelf-in-Antarctica.jpg?fit=1100%2C850&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2022\/06\/Ronne-Ice-Shelf-in-Antarctica.jpg?fit=1100%2C850&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":2709,"url":"https:\/\/www.laterredufutur.com\/accueil\/le-mystere-du-lac-vostok\/","url_meta":{"origin":3427,"position":5},"title":"Le myst\u00e8re du lac Vostok","author":"Admin","date":"22 f\u00e9vrier 2005","format":false,"excerpt":"Avant la glace. Situ\u00e9 au coeur du supercontinent Gondwana, temp\u00e9r\u00e9 et humide, l'Antartique est devenu une masse distincte voici 70 millions d'ann\u00e9es. La roche m\u00e9re (bedrock) de l'antartique oriental remonte \u00e0 3 milliards d'ann\u00e9es et compte parmis les plus anciennes du globe. Form\u00e9 d'un puzzle complexe de blocs crustaux et\u2026","rel":"","context":"Dans &quot;Arch\u00e9ologie&quot;","block_context":{"text":"Arch\u00e9ologie","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/archeologie\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/spaw\/images\/suite41.jpg?resize=350%2C200","width":350,"height":200},"classes":[]}],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/3427","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=3427"}],"version-history":[{"count":1,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/3427\/revisions"}],"predecessor-version":[{"id":3429,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/3427\/revisions\/3429"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/media\/3428"}],"wp:attachment":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/media?parent=3427"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/categories?post=3427"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/tags?post=3427"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}