{"id":12849,"date":"2025-12-04T08:09:00","date_gmt":"2025-12-04T06:09:00","guid":{"rendered":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/?p=12849"},"modified":"2025-12-10T08:40:44","modified_gmt":"2025-12-10T06:40:44","slug":"un-planeur-sous-marin-pour-explorer-les-grands-fonds","status":"publish","type":"post","link":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/2025\/12\/04\/un-planeur-sous-marin-pour-explorer-les-grands-fonds\/","title":{"rendered":"Un planeur sous-marin pour explorer les grands fonds"},"content":{"rendered":"<div class=\"paragraph\">\n<p>Le plan d\u2019investissement France 2030, dot\u00e9 de 54\u00a0milliards d\u2019euros sur 5\u00a0ans et d\u00e9voil\u00e9 en 2021, \u00ab\u00a0<i>doit permettre de rattraper le retard industriel fran\u00e7ais, d\u2019investir massivement dans les technologies innovantes ou encore de soutenir la transition \u00e9cologique<\/i>\u00a0\u00bb, indique le minist\u00e8re de l\u2019\u00c9conomie. Il se base sur dix objectifs, parmi lesquels la relance du nucl\u00e9aire, devenir le leader de l\u2019hydrog\u00e8ne vert et des \u00e9nergies renouvelables, r\u00e9duire de 35% les \u00e9missions carbone industrielles, ou encore investir dans le champ des grands fonds marins.<\/p>\n<p>C\u2019est \u00e0 ce titre qu\u2019Ifremer, centre de recherche oc\u00e9anographique bas\u00e9 \u00e0 la Seyne-sur-Mer (Var), a confi\u00e9 \u00e0 Alseamar, entreprise roussetaine leader mondial dans la production de mat\u00e9riaux de flottabilit\u00e9 pour v\u00e9hicules sous-marin, reconnue pour ses planeurs autonomes et v\u00e9hicules sous-marins pour les forces sp\u00e9ciales, la conception d\u2019un planeur sous-marin grands fonds, capable d\u2019explorer l\u2019oc\u00e9an jusqu\u2019\u00e0 3\u00a0500m de profondeur. Un projet financ\u00e9 par l\u2019Agence nationale de la recherche (ANR), et auxquels s\u2019associent le Centre national de recherche scientifique (CNRS) et le Service national d\u2019hydrographie et d\u2019oc\u00e9anographie (SHOM). Objectif\u00a0: collecter des donn\u00e9es au large de Mayotte pour renforcer la connaissance des al\u00e9as et risques g\u00e9ologiques et sismiques li\u00e9s au volcan sous-marin Fani Maor\u00e9, d\u00e9couvert en 2019.<\/p>\n<\/p><\/div>\n<div class=\"intext\"> D\u00e9ploiement en 2031\n              <\/div>\n<div class=\"paragraph\">\n<p>La conception d\u2019un tel engin constitue un d\u00e9fi de taille pour Alseamar, qui n\u2019a jusqu\u2019ici jamais d\u00e9pass\u00e9 1\u00a0250m de profondeur sur ses planeurs Seaexplorer, utilis\u00e9s dans la m\u00eame optique depuis septembre\u00a02021. Les donn\u00e9es acquises lors du d\u00e9ploiement de ces prototypes pourront compl\u00e9ter celles d\u00e9j\u00e0 recueillies, \u00e0 la demande d\u2019Ifremer, dans le cadre du R\u00e9seau de surveillance volcanologique et sismologique de Mayotte (REVOSIMA). \u00ab\u00a0<i>Il y a d\u00e9j\u00e0 eu 1<\/i><i>\u00a0<\/i><i>400<\/i><i>\u00a0<\/i><i>jours et plus de 200<\/i><i>\u00a0<\/i><i>millions de points de mesure dans la zone<\/i>\u00a0\u00bb, pr\u00e9cise Laurent Beguery, directeur du D\u00e9partement des services et \u00e9tudes scientifiques d\u2019Alseamar. \u00ab\u00a0<i>Il y a un besoin de rassurer la population<\/i>\u00a0\u00bb, d\u00e9taille Christian Tamburini, d\u00e9l\u00e9gu\u00e9 scientifique CNRS-INSU. \u00ab\u00a0<i>Le programme REVOSIMA \u00e9met des bulletins quotidiens et mensuels. Le flanc de Mayotte pr\u00e9sente de nombreuses structures volcaniques, ainsi qu\u2019une caldera volcanique appel\u00e9e &#8220;Fer \u00e0 Cheval&#8221;.<\/i> <i>Le planeur permet l\u2019identification d\u2019\u00e9manations de gaz (CO2, m\u00e9thane), qui peuvent \u00eatre un indicateur d\u2019activit\u00e9 volcanique, et d\u2019analyser des param\u00e8tres physiques et chimiques de la colonne d\u2019eau afin d\u2019identifier des anomalies et anticiper un changement dans le syst\u00e8me pour \u00e9valuer les risques potentiels.<\/i>\u00a0\u00bb<\/p>\n<p>La conception du planeur devrait \u00eatre achev\u00e9e en mars\u00a02028, et la production de trois prototypes, ainsi qu\u2019une phase de tests en M\u00e9diterran\u00e9e d\u2019ici d\u00e9cembre\u00a02029. \u00c0 l\u2019issue de celle-ci, deux nouveaux prototypes seront con\u00e7us et d\u00e9ploy\u00e9s \u00e0 Mayotte en novembre\u00a02031, pour une ann\u00e9e de mission.<\/p>\n<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"Le plan d&rsquo;investissement France 2030, dot&eacute; de 54&nbsp;milliards d&rsquo;euros sur 5&nbsp;ans et d&eacute;voil&eacute; en 2021, &laquo;&nbsp;doit permettre de rattraper le retard industriel fran&ccedil;ais, d&rsquo;investir massivement &#8230;","protected":false},"author":1,"featured_media":12850,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3926,3925,20],"tags":[10,2482,2326,79,890,2732,398,1794,2733,563,38,1592,3324,420,2872,98,165,88,1591],"news-destination":[3944],"news-source":[475],"is_homepage":[],"ta_other":[],"class_list":["post-12849","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-accueil-merge","category-accueil-third","category-societe","tag-bouches-du-rhone","tag-cnrs","tag-etudes","tag-fonds-marins","tag-gaz","tag-ifremer","tag-la-seyne-sur-mer","tag-ocean","tag-oceans","tag-production","tag-programme","tag-recherche","tag-rousset","tag-scientifique","tag-scientifiques","tag-sous-marin","tag-sous-marins","tag-surveillance","tag-technologies","news-destination-homepage","news-source-website"],"_links":{"self":[{"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/posts\/12849","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/comments?post=12849"}],"version-history":[{"count":1,"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/posts\/12849\/revisions"}],"predecessor-version":[{"id":12851,"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/posts\/12849\/revisions\/12851"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/media\/12850"}],"wp:attachment":[{"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/media?parent=12849"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/categories?post=12849"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/tags?post=12849"},{"taxonomy":"news-destination","embeddable":true,"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/news-destination?post=12849"},{"taxonomy":"news-source","embeddable":true,"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/news-source?post=12849"},{"taxonomy":"is_homepage","embeddable":true,"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/is_homepage?post=12849"},{"taxonomy":"ta_other","embeddable":true,"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/ta_other?post=12849"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}