{"id":1304,"date":"2016-06-09T12:05:34","date_gmt":"2016-06-09T12:05:34","guid":{"rendered":"https:\/\/blogs.futura-sciences.com\/bardintzeff\/?p=1304"},"modified":"2016-06-09T12:12:08","modified_gmt":"2016-06-09T12:12:08","slug":"leruption-cataclysmale-changbaishan","status":"publish","type":"post","link":"https:\/\/blogs.futura-sciences.com\/bardintzeff\/2016\/06\/09\/leruption-cataclysmale-changbaishan\/","title":{"rendered":"L\u2019\u00e9ruption cataclysmale du Changbaishan"},"content":{"rendered":"

Le volcan Changbaishan (nom chinois) ou Paektu (nom cor\u00e9en, signifiant “montagne toujours blanche”) se situe \u00e0 la fronti\u00e8re sino-cor\u00e9enne et culmine \u00e0 2744 m. Ses alentours sont prot\u00e9g\u00e9s par une r\u00e9serve naturelle. Il entre r\u00e9guli\u00e8rement en \u00e9ruption, la derni\u00e8re fois en 1903. Mais il a pr\u00e9sent\u00e9 un regain d\u2019activit\u00e9 plus r\u00e9cemment, en 2002-2005. Il est donc surveill\u00e9.<\/p>\n

Il a \u00e9t\u00e9 le si\u00e8ge d’une formidable \u00e9ruption, dat\u00e9e entre les ann\u00e9es 942 et 946. Celle-ci expulsa 96 km3<\/sup> de cendres et autres t\u00e9phras. La colonne \u00e9ruptive monta jusqu\u2019\u00e0 35 km de hauteur.<\/p>\n

Nous avons pu le visiter r\u00e9cemment avec \u201c80 jours voyages\u201c (Guide : Sylvain Chermette, Conseiller scientifique : Jacques-Marie Bardintzeff).<\/p>\n

Il reste d’impressionnants d\u00e9p\u00f4ts d’ignimbrite soud\u00e9s, \u00e9rod\u00e9s en piliers et travers\u00e9s par des canyons.<\/p>\n

\"Bardintzeff.SAM_5007\"<\/p>\n

Les d\u00e9p\u00f4ts d\u2019ignimbrites de l\u2019\u00e9ruption du 10e<\/sup> si\u00e8cle du Changbaishan, sculpt\u00e9s en piliers dans le canyon de la \u00ab\u00a0For\u00eat de roches volcaniques\u00a0\u00bb (\u00a9 J.M. Bardintzeff).<\/p>\n

<\/p>\n

Les cendres ont \u00e9t\u00e9 emport\u00e9es vers l’Est (sud de la Russie, Japon) jusqu\u2019\u00e0 une distance de 1200 km et jusqu\u2019\u00e0 120 km vers l\u2019Ouest. Il en est r\u00e9sult\u00e9 une caldeira sommitale de 4,5 km de diam\u00e8tre et de 850 m de profondeur, occup\u00e9e par le lac Tianchi (ce qui signifie \u00ab le lac c\u00e9leste \u00bb), profond de 384 m. Cette \u00e9ruption a eu un impact climatique. Elle appara\u00eet du m\u00eame ordre de grandeur que celle du Tambora en Indon\u00e9sie, qui lib\u00e9ra 150 km3<\/sup> en 1815.<\/p>\n","protected":false},"excerpt":{"rendered":"

Le volcan Changbaishan (nom chinois) ou Paektu (nom cor\u00e9en, signifiant “montagne toujours blanche”) se situe \u00e0 la fronti\u00e8re sino-cor\u00e9enne et culmine \u00e0 2744 m. Ses alentours sont prot\u00e9g\u00e9s par une r\u00e9serve naturelle. Il entre r\u00e9guli\u00e8rement en \u00e9ruption, la derni\u00e8re fois en 1903. Mais il a pr\u00e9sent\u00e9 un regain d\u2019activit\u00e9 plus r\u00e9cemment, en 2002-2005. Il est … Continuer la lecture de L\u2019\u00e9ruption cataclysmale du Changbaishan<\/span> →<\/span><\/a><\/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":[8],"tags":[299,300,433,434,302],"class_list":["post-1304","post","type-post","status-publish","format-standard","hentry","category-voyages","tag-changbaishan","tag-chine","tag-coree","tag-ignimbrite","tag-paektu"],"yoast_head":"\nL\u2019\u00e9ruption cataclysmale du Changbaishan, 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\/2016\/06\/09\/leruption-cataclysmale-changbaishan\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"L\u2019\u00e9ruption cataclysmale du Changbaishan, par Jacques-Marie Bardintzeff\" \/>\n<meta property=\"og:description\" content=\"Le volcan Changbaishan (nom chinois) ou Paektu (nom cor\u00e9en, signifiant “montagne toujours blanche”) se situe \u00e0 la fronti\u00e8re sino-cor\u00e9enne et culmine \u00e0 2744 m. Ses alentours sont prot\u00e9g\u00e9s par une r\u00e9serve naturelle. Il entre r\u00e9guli\u00e8rement en \u00e9ruption, la derni\u00e8re fois en 1903. Mais il a pr\u00e9sent\u00e9 un regain d\u2019activit\u00e9 plus r\u00e9cemment, en 2002-2005. 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