{"id":589,"date":"2015-04-17T18:14:56","date_gmt":"2015-04-17T18:14:56","guid":{"rendered":"https:\/\/blogs.futura-sciences.com\/bardintzeff\/?p=589"},"modified":"2015-04-18T05:44:07","modified_gmt":"2015-04-18T05:44:07","slug":"risque-de-tsunami-en-france-metropolitaine","status":"publish","type":"post","link":"https:\/\/blogs.futura-sciences.com\/bardintzeff\/2015\/04\/17\/risque-de-tsunami-en-france-metropolitaine\/","title":{"rendered":"Risque de tsunami en France m\u00e9tropolitaine"},"content":{"rendered":"<p>L\u2019alerte (lev\u00e9e ensuite) au tsunami en Corse, suite \u00e0 un s\u00e9isme en Cr\u00e8te, repose le probl\u00e8me du risque de tsunami en France m\u00e9tropolitaine<\/p>\n<p>En M\u00e9diterran\u00e9e, ce risque existe. Des \u00e9v\u00e9nements de ce type ont d\u00e9j\u00e0 eu lieu sur la C\u00f4te d\u2019Azur\u00a0:<\/p>\n<p>&#8211; le 20 juillet 1564, suite au s\u00e9isme (intensit\u00e9 X) de Saint-Martin-V\u00e9subie\u00a0;<\/p>\n<p>&#8211; le 23 f\u00e9vrier 1887, suite \u00e0 un s\u00e9isme (intensit\u00e9 IX) en mer Ligure. On estime la hauteur des vagues \u00e0 pr\u00e8s de 2 m\u00e8tres vers Menton\u00a0;<\/p>\n<p>&#8211; le 16 octobre 1979, suite \u00e0 un glissement de terrain au niveau de l\u2019a\u00e9roport de Nice.<\/p>\n<p>Deux sc\u00e9narios peuvent \u00eatre envisag\u00e9s (parmi d\u2019autres)\u00a0:<\/p>\n<p><!--more--><\/p>\n<p>&#8211; un s\u00e9isme au large de la C\u00f4te d\u2019Azur, de magnitude moyenne (5 \u00e0 6), pourrait cr\u00e9er un tsunami avec des vagues de 50 cm \u00e0 1 m, qui d\u00e9ferleraient rapidement (une dizaine de minutes plus tard) sur la c\u00f4te\u00a0;<\/p>\n<p>&#8211; un s\u00e9isme pr\u00e8s des c\u00f4tes alg\u00e9riennes, plus fort (magnitude 7), pourrait cr\u00e9er des vagues de 2 \u00e0 3 m\u00e8tres, qui arriveraient sur les c\u00f4tes fran\u00e7aises 60 \u00e0 70 minutes plus tard.<\/p>\n<p>Les zones plates (deltas) sont plus expos\u00e9es.<\/p>\n<p>L\u2019oc\u00e9an Atlantique est statistiquement moins menac\u00e9. Mais d\u2019importants glissements de terrains au niveau des \u00eeles Canaries pourraient engendrer un tsunami important, avec des vagues de 5 \u00e0 7 m\u00e8tres d\u00e9ferlant sur les c\u00f4tes fran\u00e7aises et anglaises, plus hautes encore sur les c\u00f4tes am\u00e9ricaines.<\/p>\n<p>Le Cenalt (Centre d&#8217;alerte aux tsunamis) s\u2019occupe de la d\u00e9tection de cet al\u00e9a de tsunami dans l&#8217;Hexagone.<\/p>\n<!-- AddThis Advanced Settings generic via filter on the_content --><!-- AddThis Share Buttons generic via filter on the_content -->","protected":false},"excerpt":{"rendered":"<p>L\u2019alerte (lev\u00e9e ensuite) au tsunami en Corse, suite \u00e0 un s\u00e9isme en Cr\u00e8te, repose le probl\u00e8me du risque de tsunami en France m\u00e9tropolitaine En M\u00e9diterran\u00e9e, ce risque existe. Des \u00e9v\u00e9nements de ce type ont d\u00e9j\u00e0 eu lieu sur la C\u00f4te d\u2019Azur\u00a0: &#8211; le 20 juillet 1564, suite au s\u00e9isme (intensit\u00e9 X) de Saint-Martin-V\u00e9subie\u00a0; &#8211; le &hellip; <a href=\"https:\/\/blogs.futura-sciences.com\/bardintzeff\/2015\/04\/17\/risque-de-tsunami-en-france-metropolitaine\/\" class=\"more-link\">Continuer la lecture de <span class=\"screen-reader-text\">Risque de tsunami en France m\u00e9tropolitaine<\/span>  <span class=\"meta-nav\">&rarr;<\/span><\/a><!-- AddThis Advanced Settings generic via filter on get_the_excerpt --><!-- AddThis Share Buttons generic via filter on get_the_excerpt --><\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[6],"tags":[22,23],"class_list":["post-589","post","type-post","status-publish","format-standard","hentry","category-actualites","tag-seisme","tag-tsunami"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Risque de tsunami en France m\u00e9tropolitaine, par Jacques-Marie Bardintzeff<\/title>\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\/bardintzeff\/2015\/04\/17\/risque-de-tsunami-en-france-metropolitaine\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Risque de tsunami en France m\u00e9tropolitaine, par Jacques-Marie Bardintzeff\" \/>\n<meta property=\"og:description\" content=\"L\u2019alerte (lev\u00e9e ensuite) au tsunami en Corse, suite \u00e0 un s\u00e9isme en Cr\u00e8te, repose le probl\u00e8me du risque de tsunami en France m\u00e9tropolitaine En M\u00e9diterran\u00e9e, ce risque existe. Des \u00e9v\u00e9nements de ce type ont d\u00e9j\u00e0 eu lieu sur la C\u00f4te d\u2019Azur\u00a0: &#8211; le 20 juillet 1564, suite au s\u00e9isme (intensit\u00e9 X) de Saint-Martin-V\u00e9subie\u00a0; &#8211; le &hellip; Continuer la lecture de Risque de tsunami en France m\u00e9tropolitaine &rarr;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/blogs.futura-sciences.com\/bardintzeff\/2015\/04\/17\/risque-de-tsunami-en-france-metropolitaine\/\" \/>\n<meta property=\"og:site_name\" content=\"VOLCANMANIA : le blog de Jacques-Marie BARDINTZEFF, volcanologue\" \/>\n<meta property=\"article:published_time\" content=\"2015-04-17T18:14:56+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2015-04-18T05:44:07+00:00\" \/>\n<meta name=\"author\" content=\"jmbardintzeff\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"jmbardintzeff\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/blogs.futura-sciences.com\/bardintzeff\/2015\/04\/17\/risque-de-tsunami-en-france-metropolitaine\/\",\"url\":\"https:\/\/blogs.futura-sciences.com\/bardintzeff\/2015\/04\/17\/risque-de-tsunami-en-france-metropolitaine\/\",\"name\":\"Risque de tsunami en France m\u00e9tropolitaine, par Jacques-Marie Bardintzeff\",\"isPartOf\":{\"@id\":\"https:\/\/blogs.futura-sciences.com\/bardintzeff\/#website\"},\"datePublished\":\"2015-04-17T18:14:56+00:00\",\"dateModified\":\"2015-04-18T05:44:07+00:00\",\"author\":{\"@id\":\"https:\/\/blogs.futura-sciences.com\/bardintzeff\/#\/schema\/person\/974e1e0324e3e06f08253784e8eca61e\"},\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/blogs.futura-sciences.com\/bardintzeff\/2015\/04\/17\/risque-de-tsunami-en-france-metropolitaine\/\"]}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/blogs.futura-sciences.com\/bardintzeff\/#website\",\"url\":\"https:\/\/blogs.futura-sciences.com\/bardintzeff\/\",\"name\":\"VOLCANMANIA : le blog de Jacques-Marie BARDINTZEFF, volcanologue\",\"description\":\"Les volcans ? 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