{"id":4122,"date":"2019-01-04T05:26:52","date_gmt":"2019-01-04T05:26:52","guid":{"rendered":"https:\/\/blogs.futura-sciences.com\/bardintzeff\/?p=4122"},"modified":"2019-01-04T11:11:52","modified_gmt":"2019-01-04T11:11:52","slug":"le-krakatoa-vu-par-les-satellites-sentinel","status":"publish","type":"post","link":"https:\/\/blogs.futura-sciences.com\/bardintzeff\/2019\/01\/04\/le-krakatoa-vu-par-les-satellites-sentinel\/","title":{"rendered":"Le Krakatoa vu par les satellites Sentinel"},"content":{"rendered":"<p>Le Krakatoa (ou Krakatau) a \u00e9t\u00e9 le si\u00e8ge d\u2019une importante phase \u00e9ruptive, associ\u00e9e \u00e0 un glissement de terrain et un tsunami meurtrier, le 22 d\u00e9cembre 2018 (voir mon blog du 26\/12\/2018).<\/p>\n<p>Les images des satellites \u00ab\u00a0Sentinel\u00a0\u00bb permettent de suivre les diff\u00e9rentes phases (trains d\u2019ondes sur la mer, panache \u00e9ruptif, retomb\u00e9es de cendres) ainsi que les importantes modifications morphologiques\u00a0: l\u2019\u00eele-volcan de l\u2019Anak Krakatoa a ainsi perdu plus de 200 m\u00e8tres de hauteur, en passant de 338 m \u00e0 110 m d\u2019altitude\u00a0!<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-4125\" src=\"https:\/\/blogs.futura-sciences.com\/bardintzeff\/wp-content\/uploads\/sites\/3\/2019\/01\/HYP-066-Sentinels_S1S5P_Tsunami_in_Sunda_Strait_Java_Sumatra_fig3-395x450.jpg\" alt=\"\" width=\"395\" height=\"450\" srcset=\"https:\/\/blogs.futura-sciences.com\/bardintzeff\/wp-content\/uploads\/sites\/3\/2019\/01\/HYP-066-Sentinels_S1S5P_Tsunami_in_Sunda_Strait_Java_Sumatra_fig3-395x450.jpg 395w, https:\/\/blogs.futura-sciences.com\/bardintzeff\/wp-content\/uploads\/sites\/3\/2019\/01\/HYP-066-Sentinels_S1S5P_Tsunami_in_Sunda_Strait_Java_Sumatra_fig3-768x874.jpg 768w, https:\/\/blogs.futura-sciences.com\/bardintzeff\/wp-content\/uploads\/sites\/3\/2019\/01\/HYP-066-Sentinels_S1S5P_Tsunami_in_Sunda_Strait_Java_Sumatra_fig3.jpg 808w\" sizes=\"auto, (max-width: 395px) 100vw, 395px\" \/><\/p>\n<p>L\u2019\u00e9ruption du Krakatoa et les ph\u00e9nom\u00e8nes associ\u00e9s du 22\/12\/2018 vus par 4 images des satellites \u00ab\u00a0Sentinel\u00a0\u00bb\u00a0: 2 images radar \u00e0 gauche (Sentinel-1A et Sentinel-1B) et 2 images dans le visible \u00e0 droite (Sentinel-2A). En haut\u00a0: avant l\u2019\u00e9ruption du 22\/12, en bas : apr\u00e8s\u00a0; les changements morphologiques sont spectaculaires.<\/p>\n<p>Une \u00e9tude tr\u00e8s d\u00e9taill\u00e9e a \u00e9t\u00e9 r\u00e9alis\u00e9e par Serge Riazanoff, avec la collaboration ponctuelle de Jean Chorowicz, Jacques-Marie Bardintzeff et Guillaume Aurel, pour VisioTerra :<\/p>\n<p><a href=\"https:\/\/visioterra.fr\/telechargement\/A003_VISIOTERRA_COMMUNICATION\/HYP-066-Sentinels_S1+S5P_Tsunami_in_Sunda_Strait_Java_Sumatra.pdf\">https:\/\/visioterra.fr\/telechargement\/A003_VISIOTERRA_COMMUNICATION\/HYP-066-Sentinels_S1+S5P_Tsunami_in_Sunda_Strait_Java_Sumatra.pdf<\/a><\/p>\n<p><!--more--><\/p>\n<p>La s\u00e9rie des satellites Sentinel est lanc\u00e9e en orbite autour de la Terre par l\u2019ESA (Agence spatiale europ\u00e9enne) depuis 2014 (s\u00e9rie en cours) et fournit des images de notre plan\u00e8te, de diff\u00e9rents types (radar, multispectral, visible, ultraviolet, infrarouge).<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-4128\" src=\"https:\/\/blogs.futura-sciences.com\/bardintzeff\/wp-content\/uploads\/sites\/3\/2019\/01\/VisioTerra.logo_.jpg\" alt=\"\" width=\"300\" height=\"286\" \/><\/p>\n<p>Pour tout savoir sur VisioTerra\u00a0:<\/p>\n<p><a href=\"https:\/\/www.visioterra.fr\">https:\/\/www.visioterra.fr<\/a><\/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>Le Krakatoa (ou Krakatau) a \u00e9t\u00e9 le si\u00e8ge d\u2019une importante phase \u00e9ruptive, associ\u00e9e \u00e0 un glissement de terrain et un tsunami meurtrier, le 22 d\u00e9cembre 2018 (voir mon blog du 26\/12\/2018). Les images des satellites \u00ab\u00a0Sentinel\u00a0\u00bb permettent de suivre les diff\u00e9rentes phases (trains d\u2019ondes sur la mer, panache \u00e9ruptif, retomb\u00e9es de cendres) ainsi que les &hellip; <a href=\"https:\/\/blogs.futura-sciences.com\/bardintzeff\/2019\/01\/04\/le-krakatoa-vu-par-les-satellites-sentinel\/\" class=\"more-link\">Continuer la lecture de <span class=\"screen-reader-text\">Le Krakatoa vu par les satellites Sentinel<\/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":[1411,1398,1412,21,1413,17,1414,1415,48,1394,331,1416,1417,514,1418,23,1419],"class_list":["post-4122","post","type-post","status-publish","format-standard","hentry","category-actualites","tag-agence-spatiale-europeenne","tag-anak","tag-aurel","tag-bardintzeff","tag-chorowicz","tag-eruption","tag-esa","tag-image-satellite","tag-indonesie","tag-krakatau","tag-krakatoa","tag-radar","tag-riazanoff","tag-satellite","tag-sentinel","tag-tsunami","tag-visioterra"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Le Krakatoa vu par les satellites Sentinel, 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\/2019\/01\/04\/le-krakatoa-vu-par-les-satellites-sentinel\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Le Krakatoa vu par les satellites Sentinel, par Jacques-Marie Bardintzeff\" \/>\n<meta property=\"og:description\" content=\"Le Krakatoa (ou Krakatau) a \u00e9t\u00e9 le si\u00e8ge d\u2019une importante phase \u00e9ruptive, associ\u00e9e \u00e0 un glissement de terrain et un tsunami meurtrier, le 22 d\u00e9cembre 2018 (voir mon blog du 26\/12\/2018). Les images des satellites \u00ab\u00a0Sentinel\u00a0\u00bb permettent de suivre les diff\u00e9rentes phases (trains d\u2019ondes sur la mer, panache \u00e9ruptif, retomb\u00e9es de cendres) ainsi que les &hellip; Continuer la lecture de Le Krakatoa vu par les satellites Sentinel &rarr;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/blogs.futura-sciences.com\/bardintzeff\/2019\/01\/04\/le-krakatoa-vu-par-les-satellites-sentinel\/\" \/>\n<meta property=\"og:site_name\" content=\"VOLCANMANIA : le blog de Jacques-Marie BARDINTZEFF, volcanologue\" \/>\n<meta property=\"article:published_time\" content=\"2019-01-04T05:26:52+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2019-01-04T11:11:52+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/blogs.futura-sciences.com\/bardintzeff\/wp-content\/uploads\/sites\/3\/2019\/01\/HYP-066-Sentinels_S1S5P_Tsunami_in_Sunda_Strait_Java_Sumatra_fig3-395x450.jpg\" \/>\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\/2019\/01\/04\/le-krakatoa-vu-par-les-satellites-sentinel\/\",\"url\":\"https:\/\/blogs.futura-sciences.com\/bardintzeff\/2019\/01\/04\/le-krakatoa-vu-par-les-satellites-sentinel\/\",\"name\":\"Le Krakatoa vu par les satellites Sentinel, par Jacques-Marie Bardintzeff\",\"isPartOf\":{\"@id\":\"https:\/\/blogs.futura-sciences.com\/bardintzeff\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/blogs.futura-sciences.com\/bardintzeff\/2019\/01\/04\/le-krakatoa-vu-par-les-satellites-sentinel\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/blogs.futura-sciences.com\/bardintzeff\/2019\/01\/04\/le-krakatoa-vu-par-les-satellites-sentinel\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/blogs.futura-sciences.com\/bardintzeff\/wp-content\/uploads\/sites\/3\/2019\/01\/HYP-066-Sentinels_S1S5P_Tsunami_in_Sunda_Strait_Java_Sumatra_fig3-395x450.jpg\",\"datePublished\":\"2019-01-04T05:26:52+00:00\",\"dateModified\":\"2019-01-04T11:11:52+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\/2019\/01\/04\/le-krakatoa-vu-par-les-satellites-sentinel\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\/\/blogs.futura-sciences.com\/bardintzeff\/2019\/01\/04\/le-krakatoa-vu-par-les-satellites-sentinel\/#primaryimage\",\"url\":\"https:\/\/blogs.futura-sciences.com\/bardintzeff\/wp-content\/uploads\/sites\/3\/2019\/01\/HYP-066-Sentinels_S1S5P_Tsunami_in_Sunda_Strait_Java_Sumatra_fig3.jpg\",\"contentUrl\":\"https:\/\/blogs.futura-sciences.com\/bardintzeff\/wp-content\/uploads\/sites\/3\/2019\/01\/HYP-066-Sentinels_S1S5P_Tsunami_in_Sunda_Strait_Java_Sumatra_fig3.jpg\",\"width\":808,\"height\":920},{\"@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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