{"id":18540,"date":"2019-03-10T18:40:14","date_gmt":"2019-03-10T17:40:14","guid":{"rendered":"https:\/\/www.laterredufutur.com\/accueil\/?p=18540"},"modified":"2019-03-10T18:40:40","modified_gmt":"2019-03-10T17:40:40","slug":"mayotte-senfonce-anormalement-a-lest-en-direction-de-lessaim-de-seismes","status":"publish","type":"post","link":"https:\/\/www.laterredufutur.com\/accueil\/mayotte-senfonce-anormalement-a-lest-en-direction-de-lessaim-de-seismes\/","title":{"rendered":"Mayotte s&rsquo;enfonce anormalement \u00e0 l&rsquo;Est, en direction de l&rsquo;essaim de s\u00e9ismes"},"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<div class=\"reportage_chapeau\">La terre tremble r\u00e9guli\u00e8rement \u00e0 Mayotte, ce n&rsquo;est pas un scoop&#8230; Mais de r\u00e9cents relev\u00e9s indiquent des mouvements de sol. L&rsquo;\u00eele plonge tout doucement vers l&rsquo;est, tout droit vers l&rsquo;essaim de s\u00e9ismes qui s\u00e9vit depuis mai 2018. Normal ? Oui et non, naturellement, l&rsquo;\u00eele glisse dans l&rsquo;oc\u00e9an de 0,19 mm\/an&#8230; D&rsquo;apr\u00e8s un chercheur du CNRS dans une note d&rsquo;analyse des donn\u00e9es GPS publi\u00e9e en novembre dernier et diffus\u00e9 par France Mayotte Matin cette semaine, \u00ab\u00a0la subsidence (affaissement de la surface de la cro\u00fbte terrestre) moyenne de l&rsquo;i\u0302le de Mayotte pourrait e\u0302tre de l&rsquo;ordre de 8 cm\u00a0\u00bb si ses hypoth\u00e8ses sont confirm\u00e9es&#8230;<\/div>\n<div>\n<p>Ainsi, depuis le de\u0301but de l&rsquo;essaim de se\u0301ismes, \u00ab\u00a0Mtsangamouji s\u2019est enfonce\u0301 de 6 cm, Bandrele\u0301 de 10 cm et Petite-Terre de 12 cm. Le mouvement de subsidence n\u2019est pas uniforme. L\u2019est de l\u2019i\u0302le s\u2019enfonce donc pour sa part deux fois plus vite que l\u2019ouest,\u00a0\u00bb indique France Mayotte Matin.<\/p>\n<p>D&rsquo;apr\u00e8s la note d&rsquo;analyse du chercheur au CNRS, seuls les mod\u00e8les faisant l\u2019hypothe\u0300se de vidage d\u2019un re\u0301servoir magmatique reproduiraient bien ces observations. La chambre magmatique devrait \u00eatre situe\u0301e \u00e0 50 km a\u0300 l\u2019est de Petite-Terre, a\u0300 une profondeur de 30 km environ.<\/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>\u00ab\u00a0Si l\u2019e\u0301ruption dure un an (ce qui est possible) la subsidence moyenne de l\u2019i\u0302le de Mayotte pourrait e\u0302tre de l\u2019ordre de 8 cm, \u00e9crit le chercheur. Si la nature volcanique du phe\u0301nome\u0300ne est confirme\u0301e par d\u2019autres donne\u0301es et si le de\u0301bit est bien aussi e\u0301leve\u0301 que ce que pre\u0301dit notre mode\u0300le (ce qui ne le rend toutefois pas exceptionnel), le volume pre\u0301leve\u0301 au bout d\u2019un an (a\u0300 30 km de profondeur) pourrait avoisiner les 3 km3 et il faudrait attacher une attention particulie\u0300re aux de\u0301formations du sol en fond de mer dans la zone de la crise (possibilite\u0301 de formation de caldera a\u0300 l\u2019aplomb de la zone ponctionne\u0301e).\u00a0\u00bb<\/p>\n<p>Ces donn\u00e9es qui devraient rapidement \u00eatre v\u00e9rifi\u00e9es avec le lancement le 23 f\u00e9vrier 2019, de plusieurs missions \u00e0 terre et en mer coordonn\u00e9es par le CNRS, avec le soutien du BRGM, de l&rsquo;Institut de physique du globe de Paris (IPGP), de l&rsquo;IGN, de l&rsquo;Ifremer et du minist\u00e8re de la Transition \u00e9cologique et solidaire.<\/p>\n<p>Les scientifiques vont tenter de d\u00e9couvrir les causes de cette activit\u00e9 sismique. Six balises sont immerg\u00e9es et les r\u00e9sultats sont attendus d&rsquo;ici six mois. L&rsquo;\u00c9tat a d\u00e9bloqu\u00e9 un budget de 420 000 euros pour financer une op\u00e9ration en trois phases sur les c\u00f4tes de Mayotte, mais aussi en m\u00e9tropole et sur les \u00celes Glorieuses.<\/p>\n<p>En attendant pas d&rsquo;inqui\u00e9tude, \u00e9crit France Mayotte Matin, l&rsquo;\u00eele ne risque pas de couler d&rsquo;un coup&#8230;<\/p>\n<p>source : <a href=\"http:\/\/www.ipreunion.com\/actualites-reunion\/reportage\/2019\/03\/09\/l-essaim-de-seisme-toujours-actif-mayotte-s-enfonce,98823.html\" target=\"_blank\" rel=\"noopener noreferrer\">www.ipreunion.com<\/a><\/p>\n<\/div>\n<p class=\"bawpvc-ajax-counter\" data-id=\"18540\">(1151)<\/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>La terre tremble r\u00e9guli\u00e8rement \u00e0 Mayotte, ce n&rsquo;est pas un scoop&#8230; Mais de r\u00e9cents relev\u00e9s indiquent des mouvements de sol&#8230;.<\/p>\n","protected":false},"author":1,"featured_media":18541,"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":"Mayotte s'enfonce anormalement \u00e0 l'Est, en direction de l'essaim de s\u00e9ismes @laterredufutur.com","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":[4537,6945,347],"class_list":["post-18540","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-seismes-et-volcans","tag-glissement","tag-mayotte","tag-seisme","wpcat-19-id"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/03\/seisme-mayotte.jpg?fit=660%2C371&ssl=1","jetpack_shortlink":"https:\/\/wp.me\/p631RN-4P2","jetpack-related-posts":[{"id":22600,"url":"https:\/\/www.laterredufutur.com\/accueil\/premieres-images-du-volcan-sous-marin-pres-de-mayotte\/","url_meta":{"origin":18540,"position":0},"title":"Premi\u00e8res images du volcan sous-marin pr\u00e8s de Mayotte","author":"Admin","date":"4 juin 2021","format":false,"excerpt":"Geoflamme, la premi\u00e8re campagne scientifique sur le volcan sous-marin au large de Mayotte, vient de s'achever. Les scientifiques ont maintenant de grandes quantit\u00e9s d'\u00e9chantillons de roche et de fluide ainsi que d'\u00e9tonnantes images haute r\u00e9solution de l'\u00e9difice volcanique. Esp\u00e9rons que ces nouvelles donn\u00e9es permettront de mieux comprendre la formation, l'\u00e9volution\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\/06\/mayotte-sous-marin-volcan.png?fit=1140%2C515&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/06\/mayotte-sous-marin-volcan.png?fit=1140%2C515&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/06\/mayotte-sous-marin-volcan.png?fit=1140%2C515&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/06\/mayotte-sous-marin-volcan.png?fit=1140%2C515&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/06\/mayotte-sous-marin-volcan.png?fit=1140%2C515&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":17885,"url":"https:\/\/www.laterredufutur.com\/accueil\/naissance-dun-volcan-au-large-de-mayotte\/","url_meta":{"origin":18540,"position":1},"title":"Naissance d&rsquo;un volcan au large de Mayotte ?","author":"Admin","date":"20 janvier 2019","format":false,"excerpt":"\u00c9ruption volcanique imminente ? Expulsion de poches de gaz ? La d\u00e9couverte d\u2019une grande quantit\u00e9 de poissons morts \u00e0 la surface de la mer sur la zone d'essaim sismique qui touche Mayotte depuis le 10 mai 2018, interroge des scientifiques qui \u00e9mettent des hypoth\u00e8ses. C\u2019est sur la base d\u2019observations similaires\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\/mayotte_geologie-sous-marine.jpg?fit=660%2C371&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/01\/mayotte_geologie-sous-marine.jpg?fit=660%2C371&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/01\/mayotte_geologie-sous-marine.jpg?fit=660%2C371&ssl=1&resize=525%2C300 1.5x"},"classes":[]},{"id":19157,"url":"https:\/\/www.laterredufutur.com\/accueil\/naissance-dun-volcan-sous-marin-a-mayotte\/","url_meta":{"origin":18540,"position":2},"title":"Naissance d&rsquo;un volcan sous-marin \u00e0 Mayotte","author":"Admin","date":"19 mai 2019","format":false,"excerpt":"Les eaux turquoise n\u2019en laissent rien para\u00eetre, Mayotte vient de livrer un secret jusqu'alors bien gard\u00e9. L'oc\u00e9an a accouch\u00e9 d'un volcan par 3 500 m\u00e8tres de profondeur, \u00e0 50 km au large de l'\u00eele. Un monstre de 800 m\u00e8tres de haut pos\u00e9 sur un socle de 4 km de diam\u00e8tre.\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\/05\/mayotte-nouveau-volcan.jpg?fit=1024%2C680&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/05\/mayotte-nouveau-volcan.jpg?fit=1024%2C680&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/05\/mayotte-nouveau-volcan.jpg?fit=1024%2C680&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/05\/mayotte-nouveau-volcan.jpg?fit=1024%2C680&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":26668,"url":"https:\/\/www.laterredufutur.com\/accueil\/essaim-de-seismes-intenses-en-cours-au-santorin-tectonique-ou-volcanique\/","url_meta":{"origin":18540,"position":3},"title":"Essaim de s\u00e9ismes intenses en cours au Santorin : tectonique ou volcanique ?","author":"Admin","date":"4 f\u00e9vrier 2025","format":false,"excerpt":"Un essaim sismique intense s'est produit depuis mardi 28 janvier 2025 au large des c\u00f4tes de Santorin, en Gr\u00e8ce, \u00e0 quelques kilom\u00e8tres de l'une des \u00eeles volcaniques les plus connues et visit\u00e9es au monde. La s\u00e9quence en cours depuis mardi a jusqu'\u00e0 pr\u00e9sent enregistr\u00e9 plus de 300 tremblements de terre,\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\/2023\/03\/santorin-et-volcan-Kolumbo.jpg?fit=600%2C563&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2023\/03\/santorin-et-volcan-Kolumbo.jpg?fit=600%2C563&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2023\/03\/santorin-et-volcan-Kolumbo.jpg?fit=600%2C563&ssl=1&resize=525%2C300 1.5x"},"classes":[]},{"id":24796,"url":"https:\/\/www.laterredufutur.com\/accueil\/mayotte-un-immense-corridor-volcanique-decouvert\/","url_meta":{"origin":18540,"position":4},"title":"Mayotte : Un immense corridor volcanique d\u00e9couvert","author":"Admin","date":"15 mars 2023","format":false,"excerpt":"Au moyen de campagnes en mer, un gigantesque corridor de volcans actifs a \u00e9t\u00e9 d\u00e9couvert tout le long de l\u2019archipel des Comores. En 2018, suite \u00e0 une crise sismique \u00e0 Mayotte, des campagnes en mer ont \u00e9t\u00e9 lanc\u00e9es. Ainsi, Fani Maor\u00e9, un volcan sous-marin, a \u00e9t\u00e9 d\u00e9couvert \u00e0 50 km\u2026","rel":"","context":"Dans &quot;Outils sur le volcanisme et les s\u00e9ismes&quot;","block_context":{"text":"Outils sur le volcanisme et les s\u00e9ismes","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/outils-volcanisme-seismes\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/06\/mayotte-seisme-volcan.png?fit=900%2C636&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/06\/mayotte-seisme-volcan.png?fit=900%2C636&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/06\/mayotte-seisme-volcan.png?fit=900%2C636&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/06\/mayotte-seisme-volcan.png?fit=900%2C636&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":23860,"url":"https:\/\/www.laterredufutur.com\/accueil\/cumbre-vieja-nouvel-essaim-de-tremblements-de-terre-de-plus-de-60-secousses-en-cours-a-la-palma-iles-canaries\/","url_meta":{"origin":18540,"position":5},"title":"Cumbre Vieja ! Nouvel essaim de tremblements de terre de plus de 60 secousses en cours \u00e0 La Palma, \u00eeles Canaries","author":"Admin","date":"25 mars 2022","format":false,"excerpt":"Un nouvel essaim de s\u00e9ismes est en cours depuis le 24 mars 2022 vers 19h01 heure locale, a rapport\u00e9 INVOLCAN sur sa page Facebook. Les 60 tremblements de terre de la nouvelle crise sismique sont des \u00e9v\u00e9nements sismiques \u00e0 long terme frappant le volcan Cumbre Vieja. Ils se produisent actuellement\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\/2022\/03\/seismes-a-la-palma-le-24-mars-2022-1.jpg?fit=1200%2C800&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2022\/03\/seismes-a-la-palma-le-24-mars-2022-1.jpg?fit=1200%2C800&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2022\/03\/seismes-a-la-palma-le-24-mars-2022-1.jpg?fit=1200%2C800&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2022\/03\/seismes-a-la-palma-le-24-mars-2022-1.jpg?fit=1200%2C800&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2022\/03\/seismes-a-la-palma-le-24-mars-2022-1.jpg?fit=1200%2C800&ssl=1&resize=1050%2C600 3x"},"classes":[]}],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/18540","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=18540"}],"version-history":[{"count":1,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/18540\/revisions"}],"predecessor-version":[{"id":18542,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/18540\/revisions\/18542"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/media\/18541"}],"wp:attachment":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/media?parent=18540"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/categories?post=18540"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/tags?post=18540"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}