{"id":160,"date":"2007-11-02T09:00:00","date_gmt":"2007-11-02T08:00:00","guid":{"rendered":"http:\/\/vandiepenbeeck.org\/?p=160"},"modified":"2007-11-02T09:00:00","modified_gmt":"2007-11-02T08:00:00","slug":"les-causes-des-inondations-3","status":"publish","type":"post","link":"http:\/\/vandiepenbeeck.org\/?p=160","title":{"rendered":"Les causes des inondations (3)"},"content":{"rendered":"<p style=\"margin: 0mm 0mm 0pt\" class=\"MsoBodyTextIndent\"><span lang=\"FR\" xml:lang=\"FR\"><font size=\"3\" face=\"Times New Roman\">Des inondations peuvent \u00eatre caus\u00e9es par une rupture d\u2019une poche glaci\u00e8re. Il arrive lors de la fonte estivale que l\u2019eau qui coule sous un glacier reste prisonni\u00e8re sous ce dernier. Elle s\u2019y accule, augmentant la pression sur la glace. Lorsqu\u2019elle trop grande, il y a rupture de la glace, lib\u00e9rant un grande quantit\u00e9 d\u2019eau et de mati\u00e8re. La rupture d&rsquo;une poche d&rsquo;eau sous-glaciaire, situ\u00e9e \u00e0 3150 m d&rsquo;altitude environ, a entra\u00een\u00e9 la lib\u00e9ration d&rsquo;une importante masse d&rsquo;eau, estim\u00e9e \u00e0 200000 m3. \u00c0 cette eau se sont ajout\u00e9 les 90000 m3 de glace qui constituaient le bouchon qui a \u00e9t\u00e9 Toute cette masse en mouvement a ensuite emprunt\u00e9 l&rsquo;\u00e9troit couloir du Bossonney. Le m\u00e9lange d&rsquo;eau, de glace et des mat\u00e9riaux \u00e9rod\u00e9s a donn\u00e9 naissance \u00e0 une lave torrentielle \u00e9norme.<\/font><\/span><\/p>\n<p style=\"margin: 0mm 0mm 0pt\" class=\"MsoNormal\"><span lang=\"FR\" xml:lang=\"FR\"><\/span><\/p>\n<p> <span style=\"font-size: 12pt; font-family: 'Times New Roman'\" lang=\"FR\" xml:lang=\"FR\"><img decoding=\"async\" src=\"http:\/\/lameteo.blogs.lalibre.be\/media\/02\/02\/b10a12cf22ecf1cb993e726f50f4d445.png\" alt=\"17322a644bb4e77928e0a227e9ca7dc0.png\" style=\"float: left; margin: 0.2em 1.4em 0.7em 0px; border-width: 0px\" id=\"media-17432\" name=\"media-17432\" \/>Des inondations peuvent \u00e9galement \u00eatre caus\u00e9es par la remont\u00e9e du niveau des nappes phr\u00e9atiques. Des pluies continues et\/ou \u00e0 r\u00e9p\u00e9tition peuvent s\u2019accumuler dans les nappes phr\u00e9atiques. Si la quantit\u00e9 d\u2019eau qui arrive est sup\u00e9rieure \u00e0 celle qui s\u2019\u00e9vacue par les sources, le niveau de la nappe remonte et lorsqu\u2019elle arrive \u00e0 la surface du sol, elle inonde l\u2019environnement. Les inondations de la Somme au d\u00e9but de l\u2019ann\u00e9e 2001 ont \u00e9t\u00e9 dues \u00e0 la crue de la Somme mais cette eau ne s\u2019\u00e9vacuait pas car les nappes phr\u00e9atiques \u00e9taient compl\u00e8tement remplies.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Des inondations peuvent \u00eatre caus\u00e9es par une rupture d\u2019une poche glaci\u00e8re. Il arrive lors de la fonte estivale que l\u2019eau qui coule sous un glacier reste prisonni\u00e8re sous ce dernier. Elle s\u2019y accule, augmentant la pression sur la glace. Lorsqu\u2019elle trop grande, il y a rupture de la glace, lib\u00e9rant un grande quantit\u00e9 d\u2019eau et [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"class_list":["post-160","post","type-post","status-publish","format-standard","hentry","category-meteo"],"_links":{"self":[{"href":"http:\/\/vandiepenbeeck.org\/index.php?rest_route=\/wp\/v2\/posts\/160"}],"collection":[{"href":"http:\/\/vandiepenbeeck.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/vandiepenbeeck.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/vandiepenbeeck.org\/index.php?rest_route=\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"http:\/\/vandiepenbeeck.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=160"}],"version-history":[{"count":0,"href":"http:\/\/vandiepenbeeck.org\/index.php?rest_route=\/wp\/v2\/posts\/160\/revisions"}],"wp:attachment":[{"href":"http:\/\/vandiepenbeeck.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=160"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/vandiepenbeeck.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=160"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/vandiepenbeeck.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=160"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}