{"id":402,"date":"2025-04-11T15:03:19","date_gmt":"2025-04-11T13:03:19","guid":{"rendered":"https:\/\/www.meteor-oi.re\/?page_id=402"},"modified":"2025-04-20T12:45:42","modified_gmt":"2025-04-20T10:45:42","slug":"les-mouvements-de-terrains-a-la-reunion","status":"publish","type":"page","link":"https:\/\/www.meteor-oi.re\/index.php\/les-risques-naturels-a-la-reunion\/les-mouvements-de-terrains-a-la-reunion\/","title":{"rendered":"Les mouvements de terrain\u00a0\u00e0 La R\u00e9union"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">Les glissements de terrains li\u00e9s aux fortes pr\u00e9cipitations<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Lors de <a href=\"https:\/\/www.meteor-oi.re\/index.php\/meteo\/precipitations-extremes-a-la-reunion\/\" target=\"_blank\" rel=\"noreferrer noopener\">fortes pluies<\/a> li\u00e9es au passage d\u2019un syst\u00e8me d\u00e9pressionnaire ou d\u2019un violent orage, il peut arriver que les sols finissent par saturer. D\u00e8s lors, les fragilit\u00e9s structurelles de ceux-ci peuvent perturber sa coh\u00e9sion et provoquer des glissements de mat\u00e9riaux parfois tr\u00e8s importants. Le cas le plus connu est la Catastrophe de Grand Sable en 1875. Lors de l\u2019effondrement d\u2019un pan du Gros Morne sur un \u00eelet habit\u00e9, 62 personnes ont perdu la vie.\u00a0En janvier 1980, dix membres d\u2019une m\u00eame famille p\u00e9rirent lors de l\u2019ensevelissement de leur maison par un de ces ph\u00e9nom\u00e8nes. Plus r\u00e9cemment, un couple connut le m\u00eame triste sort lors du passage de Fakir en avril 2018. Par cons\u00e9quent, des campagnes d\u2019analyse des sous-sols ont \u00e9t\u00e9 men\u00e9es. Le but est de mieux appr\u00e9hender ce risque qui concerne toutes les r\u00e9gions fortement pentues et \u00e9rod\u00e9es.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Les autres glissements de terrain<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Parfois, les effets de la pluie peuvent \u00eatre diff\u00e9r\u00e9s de plusieurs semaines voire plusieurs mois. C\u2019est ainsi que, trois semaines apr\u00e8s le passage particuli\u00e8rement&nbsp;pluvieux de la temp\u00eate tropicale Diwa, un \u00e9boulis massif fit trois victimes sur la route du littoral. &nbsp;Enfin, des \u00e9tudes g\u00e9ologiques ont r\u00e9v\u00e9l\u00e9 un risque majeur, bien que tr\u00e8s faible, d\u2019effondrement d\u2019un tron\u00e7on des flancs de la Fournaise qui entra\u00eenerait un tsunami majeur sur l\u2019\u00eele. Que cela ne vous emp\u00eache pas de dormir vu la probabilit\u00e9 limit\u00e9e de votre vivant.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Quels r\u00f4les pour M\u00e9t\u00e9oR-OI&nbsp;?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Aucun \u00e0 vrai dire, hormis dans le recueil de donn\u00e9es pluviom\u00e9triques ou <a href=\"https:\/\/www.meteor-oi.re\/index.php\/projets\/les-webcams-meteo-a-la-reunion-et-dans-locean-indien\/\" target=\"_blank\" rel=\"noreferrer noopener\">images de webcam<\/a> pour expertiser certains glissements de terrain.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Les glissements de terrains li\u00e9s aux fortes pr\u00e9cipitations Lors de fortes pluies li\u00e9es au passage d\u2019un syst\u00e8me d\u00e9pressionnaire ou d\u2019un violent orage, il peut arriver que les sols finissent par saturer. D\u00e8s lors, les fragilit\u00e9s structurelles de ceux-ci peuvent perturber sa coh\u00e9sion et provoquer des glissements de mat\u00e9riaux parfois tr\u00e8s importants. Le cas le plus&hellip; <br \/> <a class=\"read-more\" href=\"https:\/\/www.meteor-oi.re\/index.php\/les-risques-naturels-a-la-reunion\/les-mouvements-de-terrains-a-la-reunion\/\">Lire la suite<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":394,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-402","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Les glissements de terrain \u00e0 La R\u00e9union<\/title>\n<meta name=\"description\" content=\"Glissements de terrain \u00e0 La R\u00e9union : causes, \u00e9v\u00e9nements marquants, risques li\u00e9s aux fortes pluies et r\u00f4le ponctuel de M\u00e9t\u00e9oR-OI.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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