{"id":1086,"date":"2022-09-27T17:34:28","date_gmt":"2022-09-27T17:34:28","guid":{"rendered":"https:\/\/blogs.futura-sciences.com\/frankel\/?p=1086"},"modified":"2023-12-14T20:21:12","modified_gmt":"2023-12-14T20:21:12","slug":"islande-comme-analogue-de-mars","status":"publish","type":"post","link":"https:\/\/blogs.futura-sciences.com\/frankel\/2022\/09\/27\/islande-comme-analogue-de-mars\/","title":{"rendered":"L’Islande comme analogue de Mars"},"content":{"rendered":"\r\n

Peu d\u2019endroits sur Terre offrent une vitrine aussi belle et vari\u00e9e du volcanisme et de la tectonique plan\u00e9taire que l\u2019Islande, y compris de nombreux ph\u00e9nom\u00e8nes entrevus sur Mars, et c\u2019est toujours une source d\u2019\u00e9merveillement que d\u2019y retourner, ce que j\u2019ai eu l\u2019occasion de faire en ao\u00fbt-septembre 2022. L\u2019\u00e9ruption du Fagradalsfjall, d\u00e9but\u00e9e en septembre 2021 et qui connut une reprise le 3 ao\u00fbt 2022, s\u2019\u00e9tait malheureusement termin\u00e9e le 22 ao\u00fbt, une semaine avant mon arriv\u00e9e sur l\u2019\u00eele, mais je ne m\u2019y rendais pas pour cette \u00e9ruption particuli\u00e8re.\"\"<\/a>\"\"Le glacier du Vatnaj\u00f6kull chapeaute plusieurs volcans et leurs \u00e9ruptions d\u00e9clenchent en aval de redoutables inondations (ici la rivi\u00e8re Skaft\u00e1, principal exutoire). Photos C. Frankel.<\/em><\/a><\/p>\r\n

\u00c0 l\u2019instigation de Grand Angle Productions, mes compagnons de route Olivier Grunewald, photographe sp\u00e9cialis\u00e9 des volcans, B\u00e9n\u00e9dicte Menez, chercheuse de l\u2019IPG qui \u00e9tudie la microbiologie \u00e0 l\u2019\u0153uvre dans les roches profondes, et moi-m\u00eame avons effectu\u00e9 une exp\u00e9dition \u00e0 travers le sud de l\u2019Islande, du volcan Hekla au Katla et jusqu\u2019aux abords du glacier Vatnaj\u00f6kull, c\u2019est-\u00e0-dite \u00e0 travers la r\u00e9gion qui juxtapose volcanisme de rifting (genre dorsale oc\u00e9anique) et volcanisme de point chaud.<\/p>\r\n

Outre l\u2019int\u00e9r\u00eat sp\u00e9cifique des sites, nombre d\u2019endroits renvoient directement \u00e0 l\u2019environnement volcanique martien, comme les \u00e9ruptions sous-glaciaires et inondations associ\u00e9es, ou encore les pseudo-crat\u00e8res form\u00e9s par lib\u00e9ration de vapeur d\u2019eau lorsque des coul\u00e9es de lave recouvrent des s\u00e9diments gorg\u00e9s d\u2019eau. Une aventure exceptionnelle, encadr\u00e9e par d\u2019excellents guides, qui sera relat\u00e9e sur ARTE dans un programme diffus\u00e9 l\u2019an prochain.<\/p>\r\n

\"\"<\/a><\/p>\r\n","protected":false},"excerpt":{"rendered":"

Peu d\u2019endroits sur Terre offrent une vitrine aussi belle et vari\u00e9e du volcanisme et de la tectonique plan\u00e9taire que l\u2019Islande, y compris de nombreux ph\u00e9nom\u00e8nes entrevus sur Mars, et c\u2019est toujours une source d\u2019\u00e9merveillement que d\u2019y retourner, ce que j\u2019ai eu l\u2019occasion de faire en ao\u00fbt-septembre 2022. L\u2019\u00e9ruption du Fagradalsfjall, d\u00e9but\u00e9e en septembre 2021 et … Continuer la lecture de L’Islande comme analogue de Mars<\/span> →<\/span><\/a><\/p>\n","protected":false},"author":6,"featured_media":1091,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[12,5],"tags":[],"class_list":["post-1086","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-audiovisuel","category-mes-projets"],"yoast_head":"\nL'Islande comme analogue de Mars - Carnets de bord d\u2019un martien, le blog de Charles FRANKEL, g\u00e9ologue<\/title>\n<meta name=\"description\" content=\"Exp\u00e9dition en Islande \u00e0 la d\u00e9couverte d'un volcanisme qui rappelle celui de la plan\u00e8te Mars, bient\u00f4t diffus\u00e9e sur ARTE.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/blogs.futura-sciences.com\/frankel\/2022\/09\/27\/islande-comme-analogue-de-mars\/\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"Charles Frankel\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/blogs.futura-sciences.com\/frankel\/2022\/09\/27\/islande-comme-analogue-de-mars\/\",\"url\":\"https:\/\/blogs.futura-sciences.com\/frankel\/2022\/09\/27\/islande-comme-analogue-de-mars\/\",\"name\":\"L'Islande comme analogue de Mars - Carnets de bord d\u2019un martien, le blog de Charles FRANKEL, g\u00e9ologue\",\"isPartOf\":{\"@id\":\"https:\/\/blogs.futura-sciences.com\/frankel\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/blogs.futura-sciences.com\/frankel\/2022\/09\/27\/islande-comme-analogue-de-mars\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/blogs.futura-sciences.com\/frankel\/2022\/09\/27\/islande-comme-analogue-de-mars\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/blogs.futura-sciences.com\/frankel\/wp-content\/uploads\/sites\/7\/2022\/09\/Les-eaux-rouges.jpg\",\"datePublished\":\"2022-09-27T17:34:28+00:00\",\"dateModified\":\"2023-12-14T20:21:12+00:00\",\"author\":{\"@id\":\"https:\/\/blogs.futura-sciences.com\/frankel\/#\/schema\/person\/c6bf521c6d19bf22fb19fb2b3d6fcf63\"},\"description\":\"Exp\u00e9dition en Islande \u00e0 la d\u00e9couverte d'un volcanisme qui rappelle celui de la plan\u00e8te Mars, bient\u00f4t diffus\u00e9e sur ARTE.\",\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/blogs.futura-sciences.com\/frankel\/2022\/09\/27\/islande-comme-analogue-de-mars\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\/\/blogs.futura-sciences.com\/frankel\/2022\/09\/27\/islande-comme-analogue-de-mars\/#primaryimage\",\"url\":\"https:\/\/blogs.futura-sciences.com\/frankel\/wp-content\/uploads\/sites\/7\/2022\/09\/Les-eaux-rouges.jpg\",\"contentUrl\":\"https:\/\/blogs.futura-sciences.com\/frankel\/wp-content\/uploads\/sites\/7\/2022\/09\/Les-eaux-rouges.jpg\",\"width\":1600,\"height\":900},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/blogs.futura-sciences.com\/frankel\/#website\",\"url\":\"https:\/\/blogs.futura-sciences.com\/frankel\/\",\"name\":\"Carnets de bord d\u2019un martien, le blog de Charles FRANKEL, g\u00e9ologue\",\"description\":\"La science ? 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