{"id":15485,"date":"2017-06-29T20:00:34","date_gmt":"2017-06-29T18:00:34","guid":{"rendered":"http:\/\/www.laterredufutur.com\/accueil\/?p=15485"},"modified":"2017-06-29T12:14:04","modified_gmt":"2017-06-29T10:14:04","slug":"le-supervolcan-du-yellowstone-vient-dobserver-878-seismes-en-deux-semaines","status":"publish","type":"post","link":"https:\/\/www.laterredufutur.com\/accueil\/le-supervolcan-du-yellowstone-vient-dobserver-878-seismes-en-deux-semaines\/","title":{"rendered":"Le supervolcan du Yellowstone vient d&rsquo;observer 878 seismes en deux semaines"},"content":{"rendered":"<div class=\"1665f18d14f35dd9e7566e1a8ac9a3e9\" data-index=\"1\" style=\"float: none; margin:10px 0 10px 0; text-align:center;\">\n<script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js\"><\/script>\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:block; text-align:center;\"\r\n     data-ad-layout=\"in-article\"\r\n     data-ad-format=\"fluid\"\r\n     data-ad-client=\"ca-pub-2860849627502538\"\r\n     data-ad-slot=\"3019501113\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script>\n<\/div>\n<p>Le Yellowstone a eu un mois de turbulences. En seulement deux semaines, le supervolcan qui se trouve sous le parc national du Wyoming aux USA a connu 878 tremblements de terre.<\/p>\n<p>Cette s\u00e9rie de tremblements de terre, appel\u00e9 essaim de tremblements de terre, a commenc\u00e9 le 12 juin 2017. En l&rsquo;espace d&rsquo;une semaine, l&rsquo;USGS avait d\u00e9j\u00e0 enregistr\u00e9 464 tremblements de terre.<\/p>\n<p>\u00ab\u00a0C&rsquo;est le plus grand nombre de tremblements de terre au Yellowstone au cours d&rsquo;une seule semaine depuis les cinq derni\u00e8res ann\u00e9es\u00a0\u00bb, a d\u00e9clar\u00e9 l&rsquo;USGS dans un communiqu\u00e9 publi\u00e9 la semaine derni\u00e8re.<\/p>\n<p>La majorit\u00e9 des tremblements de terre ne d\u00e9passaient pas la puissance 1, mais le plus grand a atteint une ampleur de 4,4, qui est le plus grand tremblement de terre au Yellowstone depuis mars 2014.<\/p>\n<p>Il est extr\u00eamement improbable que ces essaims d\u00e9clenchent une \u00e9ruption du supervolcan. En fait, l&rsquo;USGS d\u00e9finit la probabilit\u00e9 que le supervolcano explose dans l&rsquo;ann\u00e9e \u00e0 venir de 1 sur 730 000 et a gard\u00e9 son niveau d&rsquo;alerte du volcan au vert.<\/p>\n<p>\u00ab\u00a0Les essaims du Yellowstone sont une occurrence courante\u00a0\u00bb, a d\u00e9clar\u00e9 \u00e0 Newsweek Jamie Farrell, professeur de recherche \u00e0 l&rsquo;Universit\u00e9 de l&rsquo;Utah, qui fait partie de l&rsquo;Observatoire du volcan du Yellowstone (YVO) .<\/p>\n<p>\u00ab\u00a0En moyenne, Le Yellowstone observe environ 1,500-2 000 tremblements de terre par an. Parmi ceux-ci, 40 \u00e0 50% se produisent dans le cadre des essaims sismiques\u00a0\u00bb.<\/p><div class=\"1665f18d14f35dd9e7566e1a8ac9a3e9\" data-index=\"2\" style=\"float: none; margin:10px 0 10px 0; text-align:center;\">\n<script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js\"><\/script>\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:block; text-align:center;\"\r\n     data-ad-layout=\"in-article\"\r\n     data-ad-format=\"fluid\"\r\n     data-ad-client=\"ca-pub-2860849627502538\"\r\n     data-ad-slot=\"3019501113\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script>\n<\/div>\n\n<p>Et tandis que l&rsquo;essaim le plus r\u00e9cent est plus grand que la moyenne, Farrell dit qu&rsquo;il n&rsquo;y a aucune preuve que l&rsquo;activit\u00e9 est li\u00e9e au magma qui se d\u00e9place sous la sous-surface.<\/p>\n<p>Les g\u00e9ologues surveillent constamment le supervolcan du Yellowstone en vue d&rsquo;une activit\u00e9 inhabituelle. Si le volcan \u00e9tait sur le point d&rsquo;exploser, Farrell dit qu&rsquo;il commencerait \u00e0 voir une sismicit\u00e9 accrue, de grands changements dans la d\u00e9formation de la surface, des changements dans le syst\u00e8me hydrothermal et des changements dans la production de gaz.<\/p>\n<p>Le supervolcan de Yellowstone n&rsquo;explose pas tr\u00e8s souvent. Au cours des deux derniers millions d&rsquo;ann\u00e9es, il n&rsquo;a connu que trois grandes \u00e9ruptions.<\/p>\n<p>\u00ab\u00a0Si le Yellowstone \u00e9clate, il est tr\u00e8s probable que ce soit un flux de lave, comme cela s&rsquo;est produit dans presque toutes les 80 \u00e9ruptions depuis la derni\u00e8re\u00ab super\u00e9ruption \u00bbil y a 640 000 ans, a-t- il d\u00e9clar\u00e9 \u00e0 Hannah Osborne, de Newsweek.<\/p>\n<p>R\u00e9sum\u00e9, traduction et adaptation <a href=\"http:\/\/www.laterredufutur.com\/accueil\/\">de la Terre du Futur<\/a><\/p>\n<p>source :&nbsp;<a href=\"http:\/\/www.sciencealert.com\/the-yellowstone-supervolcano-has-just-seen-878-earthquakes-in-two-weeks\" target=\"_blank\" rel=\"noopener\">http:\/\/www.sciencealert.com\/<\/a><\/p>\n<p class=\"bawpvc-ajax-counter\" data-id=\"15485\">(2360)<\/p>\n<!--CusAds0-->\n<div style=\"font-size: 0px; height: 0px; line-height: 0px; margin: 0; padding: 0; clear: both;\"><\/div>","protected":false},"excerpt":{"rendered":"<p>Le Yellowstone a eu un mois de turbulences. En seulement deux semaines, le supervolcan qui se trouve sous le parc&#8230;<\/p>\n","protected":false},"author":1,"featured_media":15486,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0,"ngg_post_thumbnail":0,"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"Le supervolcan du Yellowstone vient d'observer 878 seismes en deux semaines @laterredufutur","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[19],"tags":[2264,374,347,104,48,105],"class_list":["post-15485","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-seismes-et-volcans","tag-caldeira","tag-eruption","tag-seisme","tag-tremblement-de-terre","tag-volcan","tag-yellowstone","wpcat-19-id"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2017\/06\/yellowstone.jpg?fit=1024%2C415&ssl=1","jetpack_shortlink":"https:\/\/wp.me\/p631RN-41L","jetpack-related-posts":[{"id":1926,"url":"https:\/\/www.laterredufutur.com\/accueil\/que-se-passe-t-il-au-yellowstone\/","url_meta":{"origin":15485,"position":0},"title":"Que se passe t-il au Yellowstone ?","author":"Admin","date":"3 avril 2014","format":false,"excerpt":"Que se passe t-il au Yellowstone ? Suite au tremblement de terre de 4.8, C'est le plus important au Yellowstone depuis 1980, selon le US Geological Survey. Depuis plusieurs semaines, des bloggeurs ont pu filmer des troupeaux de bisons fuyant le parc naturel de Yellowstone secou\u00e9 par des petits tremblements\u2026","rel":"","context":"Dans &quot;Seismes\/Volcans&quot;","block_context":{"text":"Seismes\/Volcans","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/seismes-et-volcans\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2014\/04\/.._spaw_images_img94.gif?fit=410%2C281&ssl=1&resize=350%2C200","width":350,"height":200},"classes":[]},{"id":22896,"url":"https:\/\/www.laterredufutur.com\/accueil\/plus-de-1000-seismes-observes-au-yellowstone-en-1-mois\/","url_meta":{"origin":15485,"position":1},"title":"Plus de 1000 s\u00e9ismes observ\u00e9s au Yellowstone en 1 mois","author":"Admin","date":"11 ao\u00fbt 2021","format":false,"excerpt":"Yellowstone, de par sa situation g\u00e9ologique, est souvent en proie \u00e0 des s\u00e9ismes et il semblerait que la situation soit en train d\u2019empirer. D\u2019apr\u00e8s les donn\u00e9es de l\u2019US Geological Survey, le parc aurait enregistr\u00e9 plus de mille s\u00e9ismes en juillet 2021. Yellowstone est en effet une caldeira, soit un ensemble\u2026","rel":"","context":"Dans &quot;Seismes\/Volcans&quot;","block_context":{"text":"Seismes\/Volcans","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/seismes-et-volcans\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/08\/yellowstone.jpg?fit=1024%2C679&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/08\/yellowstone.jpg?fit=1024%2C679&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/08\/yellowstone.jpg?fit=1024%2C679&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/08\/yellowstone.jpg?fit=1024%2C679&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":20329,"url":"https:\/\/www.laterredufutur.com\/accueil\/volcan-de-yellowstone-un-scientifique-de-lusgs-a-admis-quune-eruption-massive-est-possible\/","url_meta":{"origin":15485,"position":2},"title":"Volcan de Yellowstone: Un scientifique de l&rsquo;USGS a admis qu&rsquo;une \u00ab\u00a0 \u00e9ruption massive est possible \u00a0\u00bb","author":"Admin","date":"22 janvier 2020","format":false,"excerpt":"Une super-\u00e9ruption du Yellowstone dans le futur est \u00abpossible\u00bb \u00e0 tout moment, a admis un scientifique de l'USGS \u00e9tudiant le volcan lors d'une s\u00e9ance de questions et r\u00e9ponses avec le public. La caldeira de Yellowstone est d\u00e9sign\u00e9e de mani\u00e8re effrayante comme un super-volcan en raison de sa capacit\u00e9 \u00e0 infliger\u2026","rel":"","context":"Dans &quot;Seismes\/Volcans&quot;","block_context":{"text":"Seismes\/Volcans","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/seismes-et-volcans\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/01\/yellowstone-super-eruption.jpg?fit=1200%2C631&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/01\/yellowstone-super-eruption.jpg?fit=1200%2C631&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/01\/yellowstone-super-eruption.jpg?fit=1200%2C631&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/01\/yellowstone-super-eruption.jpg?fit=1200%2C631&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/01\/yellowstone-super-eruption.jpg?fit=1200%2C631&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":26880,"url":"https:\/\/www.laterredufutur.com\/accueil\/les-scientifiques-affirment-que-quelque-chose-bouche-le-supervolcan-de-yellowstone\/","url_meta":{"origin":15485,"position":3},"title":"Les scientifiques affirment que quelque chose bouche le supervolcan de Yellowstone","author":"Admin","date":"8 mai 2025","format":false,"excerpt":"Des chercheurs ont trouv\u00e9 des preuves qu'un \u00ab bouchon \u00bb g\u00e9ant fait de magma pourrait emp\u00eacher le supervolcan du parc national de Yellowstone d'entrer en \u00e9ruption. Comme l'indique un article publi\u00e9 le mois dernier dans la revue Nature, une \u00e9quipe de chercheurs a d\u00e9couvert une \u00ab couche riche en mati\u00e8res\u2026","rel":"","context":"Dans &quot;Seismes\/Volcans&quot;","block_context":{"text":"Seismes\/Volcans","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/seismes-et-volcans\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/04\/chambre-magmatique-yellowstone.png?fit=600%2C332&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/04\/chambre-magmatique-yellowstone.png?fit=600%2C332&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/04\/chambre-magmatique-yellowstone.png?fit=600%2C332&ssl=1&resize=525%2C300 1.5x"},"classes":[]},{"id":534,"url":"https:\/\/www.laterredufutur.com\/accueil\/supervolcan-toba\/","url_meta":{"origin":15485,"position":4},"title":"Supervolcan Toba","author":"Admin","date":"15 septembre 2011","format":false,"excerpt":"Le 05 Septembre 2011 \u00e0 17 h 55 Temps Universel, le 06 Septembre 2011 \u00e0 00 h 55 Heure locale, un tremblement de terre de magnitude du Moment Mw 6.6 pour le Centre Sismologique Euro-M\u00e9diterran\u00e9en, - CSEM -, 6.5 r\u00e9vis\u00e9e 6.6 pour l'United States Geological Survey, - USGS -, et\u2026","rel":"","context":"Dans &quot;Seismes\/Volcans&quot;","block_context":{"text":"Seismes\/Volcans","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/seismes-et-volcans\/"},"img":{"alt_text":"lac toba","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/wordpress\/wp-content\/uploads\/2011\/09\/toba.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":13501,"url":"https:\/\/www.laterredufutur.com\/accueil\/un-essaim-de-tremblements-de-terre-a-salton-sea-augmente-le-risque-dun-seisme-majeur-sur-la-faille-de-san-andreas\/","url_meta":{"origin":15485,"position":5},"title":"Un essaim de tremblements de terre \u00e0 Salton Sea augmente le risque d&rsquo;un seisme majeur sur la faille de San Andreas","author":"Admin","date":"1 octobre 2016","format":false,"excerpt":"La Californie se pr\u00e9pare \u00e0 un s\u00e9isme majeur\u00a0autour de la faille de San Andreas. Le risque du \"Big One\" se fait sentir. Il s'agit du nom donn\u00e9 \u00e0 un tremblement de terre sur la c\u00f4te Ouest. La Californie est en \u00e9tat d'alerte. Cette semaine, une activit\u00e9 sismique inhabituelle autour de\u2026","rel":"","context":"Dans &quot;Seismes\/Volcans&quot;","block_context":{"text":"Seismes\/Volcans","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/seismes-et-volcans\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2016\/10\/seismes-salton-sea-big-one.jpg?fit=750%2C422&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2016\/10\/seismes-salton-sea-big-one.jpg?fit=750%2C422&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2016\/10\/seismes-salton-sea-big-one.jpg?fit=750%2C422&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2016\/10\/seismes-salton-sea-big-one.jpg?fit=750%2C422&ssl=1&resize=700%2C400 2x"},"classes":[]}],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/15485","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/comments?post=15485"}],"version-history":[{"count":1,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/15485\/revisions"}],"predecessor-version":[{"id":15487,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/15485\/revisions\/15487"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/media\/15486"}],"wp:attachment":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/media?parent=15485"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/categories?post=15485"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/tags?post=15485"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}