{"id":7104,"date":"2017-04-23T13:00:27","date_gmt":"2017-04-23T12:00:27","guid":{"rendered":"http:\/\/www.grandesterresbio.com\/?p=7104"},"modified":"2017-04-21T12:16:33","modified_gmt":"2017-04-21T11:16:33","slug":"le-titanic-va-definitivement-disparaitre","status":"publish","type":"post","link":"https:\/\/claire-jannot.com\/?p=7104","title":{"rendered":"Le Titanic va d\u00e9finitivement dispara\u00eetre"},"content":{"rendered":"

Une bact\u00e9rie mangeuse de fer s’attaque \u00e0 l’\u00e9pave<\/span><\/h1>\n

\"\"<\/a>D\u2019apr\u00e8s des chercheurs, l\u2019\u00e9pave du Titanic va dispara\u00eetre d\u2019ici 20 ans<\/strong> \u00e0 cause d\u2019une redoutable bact\u00e9rie qui ronge le m\u00e9tal.<\/span><\/p>\n

Les vestiges du paquebot star sont-ils d\u00e9finitivement perdus ? Selon plusieurs chercheurs dont les \u00e9tudes ont \u00e9t\u00e9 publi\u00e9es par la BBC<\/a>, les vestiges du paquebot pourraient dispara\u00eetre d\u2019ici \u00e0 2037.<\/strong> Lorsqu\u2019il a \u00e9t\u00e9 d\u00e9couvert en 1985 dans l\u2019Atlantique Nord, le paquebot \u00e9tait \u00e9tonnamment bien conserv\u00e9 \u00e0 3,8 kilom\u00e8tres sous la surface de la mer.<\/strong> Le manque de lumi\u00e8re et la pression ont rendu l\u2019\u00e9pave inhospitali\u00e8re aux \u00eatres vivants, ce qui a permis une corrosion plus lente qu\u2019\u00e0 l\u2019accoutum\u00e9e.<\/span><\/p>\n

Cependant aujourd\u2019hui, la carcasse de \u00ab\u00a0l\u2019insubmersible\u00a0\u00bb navire est en perdition. Le bois a en premier lieu \u00e9t\u00e9 rong\u00e9 par les organismes marins, exposant ainsi sa coque de m\u00e9tal. Des chercheurs de l\u2019universit\u00e9 canadienne de Dalhousie<\/strong> avaient d\u00e9j\u00e0 \u00e9tudi\u00e9 le ph\u00e9nom\u00e8ne en 1991, en pratiquant diff\u00e9rents relev\u00e9s visant \u00e0 analyser les diff\u00e9rentes bact\u00e9ries pr\u00e9sentes.<\/span><\/p>\n

Une nouvelle bact\u00e9rie :\u00a0<\/span>En 2010, un second groupe de scientifiques men\u00e9s par Henrietta Mann<\/strong>, issu de\u00a0la m\u00eame universit\u00e9 canadienne, a identifi\u00e9 avec succ\u00e8s la bact\u00e9rie responsable de la corrosion du m\u00e9tal pr\u00e9sent sur le navire. Cette bact\u00e9rie \u00e9tant inconnu, elle a \u00e9t\u00e9 appel\u00e9e \u00ab\u00a0Halomonas titanicae\u00a0\u00bb<\/strong> du nom du c\u00e9l\u00e8bre bateau.<\/span><\/p>\n

La BBC ajoute qu\u2019elle peut r\u00e9sister \u00e0 des conditions extr\u00eames auxquelles aucun autre organisme ne r\u00e9sisterait. \u00c0 bord du Titanic, la bact\u00e9rie a prolif\u00e9r\u00e9 au niveau des rusticles, stalactites de rouilles qui se forment sous l\u2019eau. Et malheureusement pour l\u2019\u00e9pave, ces stalactites sont de plus en plus nombreuses et fournissent\u00a0un lieu propice \u00e0 la bact\u00e9rie Halomonas titanicae\u00a0qui appr\u00e9cie apparemment le fer. La BBC indique \u00e9galement que la plupart des \u00e9paves sont amen\u00e9es \u00e0 dispara\u00eetre, soit mang\u00e9es par des bact\u00e9ries ou bien ab\u00eem\u00e9s par la corrosion due au sel.<\/span><\/p>\n

Source : USA \/
Cr\u00e9dit photo :\u00a0By Courtesy of NOAA\/Institute for Exploration\/University of Rhode Island (NOAA\/IFE\/URI). – http:\/\/www.gc.noaa.gov\/gcil_titanic.html, Public Domain, https:\/\/commons.wikimedia.org\/w\/index.php?curid=18643198<\/span><\/h6>\n

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Une bact\u00e9rie mangeuse de fer s’attaque \u00e0 l’\u00e9pave D\u2019apr\u00e8s des chercheurs, l\u2019\u00e9pave du Titanic va dispara\u00eetre d\u2019ici 20 ans \u00e0 cause d\u2019une redoutable bact\u00e9rie qui ronge le m\u00e9tal. Les vestiges du paquebot star sont-ils d\u00e9finitivement perdus ? Selon plusieurs chercheurs … Continuer la lecture →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"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":"","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":[47],"tags":[27,52],"class_list":["post-7104","post","type-post","status-publish","format-standard","hentry","category-societe","tag-insolite","tag-oceans"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p5jjt5-1QA","_links":{"self":[{"href":"https:\/\/claire-jannot.com\/index.php?rest_route=\/wp\/v2\/posts\/7104","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/claire-jannot.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/claire-jannot.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/claire-jannot.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/claire-jannot.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=7104"}],"version-history":[{"count":2,"href":"https:\/\/claire-jannot.com\/index.php?rest_route=\/wp\/v2\/posts\/7104\/revisions"}],"predecessor-version":[{"id":7107,"href":"https:\/\/claire-jannot.com\/index.php?rest_route=\/wp\/v2\/posts\/7104\/revisions\/7107"}],"wp:attachment":[{"href":"https:\/\/claire-jannot.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=7104"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/claire-jannot.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=7104"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/claire-jannot.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=7104"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}