{"id":9994,"date":"2019-09-26T08:27:39","date_gmt":"2019-09-26T06:27:39","guid":{"rendered":"http:\/\/wp.unil.ch\/allezsavoir\/?p=9994"},"modified":"2019-11-14T11:10:31","modified_gmt":"2019-11-14T09:10:31","slug":"la-vie-dune-riviere-de-montagne","status":"publish","type":"post","link":"https:\/\/wp.unil.ch\/allezsavoir\/la-vie-dune-riviere-de-montagne\/","title":{"rendered":"La vie d&rsquo;une rivi\u00e8re de montagne"},"content":{"rendered":"<div id='gallery-1' class='gallery galleryid-9994 gallery-columns-2 gallery-size-medium'><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/wp.unil.ch\/allezsavoir\/files\/2019\/09\/alpes_73_1.jpg'><img loading=\"lazy\" decoding=\"async\" width=\"347\" height=\"260\" src=\"https:\/\/wp.unil.ch\/allezsavoir\/files\/2019\/09\/alpes_73_1-347x260.jpg\" class=\"attachment-medium size-medium\" alt=\"\" aria-describedby=\"gallery-1-9889\" srcset=\"https:\/\/wp.unil.ch\/allezsavoir\/files\/2019\/09\/alpes_73_1-347x260.jpg 347w, https:\/\/wp.unil.ch\/allezsavoir\/files\/2019\/09\/alpes_73_1-768x576.jpg 768w, https:\/\/wp.unil.ch\/allezsavoir\/files\/2019\/09\/alpes_73_1.jpg 1024w\" sizes=\"auto, (max-width: 347px) 100vw, 347px\" \/><\/a>\n\t\t\t<\/div>\n\t\t\t\t<figcaption class='wp-caption-text gallery-caption' id='gallery-1-9889'>\n\t\t\t\tLe glacier de Tsijore Nouve, l\u2019une des sources qui alimentent la Borgne d\u2019Arolla. Photo S\u00e9bastien de Meris\n\t\t\t\t<\/figcaption><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon portrait'>\n\t\t\t\t<a href='https:\/\/wp.unil.ch\/allezsavoir\/files\/2019\/09\/alpes_73_2.jpg'><img loading=\"lazy\" decoding=\"async\" width=\"195\" height=\"260\" src=\"https:\/\/wp.unil.ch\/allezsavoir\/files\/2019\/09\/alpes_73_2-195x260.jpg\" class=\"attachment-medium size-medium\" alt=\"\" aria-describedby=\"gallery-1-9890\" srcset=\"https:\/\/wp.unil.ch\/allezsavoir\/files\/2019\/09\/alpes_73_2-195x260.jpg 195w, https:\/\/wp.unil.ch\/allezsavoir\/files\/2019\/09\/alpes_73_2.jpg 768w\" sizes=\"auto, (max-width: 195px) 100vw, 195px\" \/><\/a>\n\t\t\t<\/div>\n\t\t\t\t<figcaption class='wp-caption-text gallery-caption' id='gallery-1-9890'>\n\t\t\t\tLa base du GPS. Des points ont \u00e9t\u00e9 relev\u00e9s sur cinq tron\u00e7ons de la Borgne, tous les 20 \u00e0 30 cm. Cela a permis de r\u00e9aliser un profil du cours d\u2019eau. Photo S\u00e9bastien de Meris\n\t\t\t\t<\/figcaption><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon portrait'>\n\t\t\t\t<a href='https:\/\/wp.unil.ch\/allezsavoir\/files\/2019\/09\/alpes_73_3.jpg'><img loading=\"lazy\" decoding=\"async\" width=\"195\" height=\"260\" src=\"https:\/\/wp.unil.ch\/allezsavoir\/files\/2019\/09\/alpes_73_3-195x260.jpg\" class=\"attachment-medium size-medium\" alt=\"\" aria-describedby=\"gallery-1-9891\" srcset=\"https:\/\/wp.unil.ch\/allezsavoir\/files\/2019\/09\/alpes_73_3-195x260.jpg 195w, https:\/\/wp.unil.ch\/allezsavoir\/files\/2019\/09\/alpes_73_3.jpg 768w\" sizes=\"auto, (max-width: 195px) 100vw, 195px\" \/><\/a>\n\t\t\t<\/div>\n\t\t\t\t<figcaption class='wp-caption-text gallery-caption' id='gallery-1-9891'>\n\t\t\t\tAnalyse des macro-invert\u00e9br\u00e9s afin d\u2019avoir une id\u00e9e de la qualit\u00e9 de l\u2019eau. Photo S\u00e9bastien de Meris\n\t\t\t\t<\/figcaption><\/figure>\n\t\t<\/div>\n\n<p>En mai, des \u00e9tudiants de la Facult\u00e9 des g\u00e9osciences et de l\u2019environnement ont suivi un cours d\u2019une semaine en Valais, dans le but de mettre en pratique les m\u00e9thodes apprises \u00e0 l\u2019UNIL. \u00abNous avons travaill\u00e9 sur la Borgne d\u2019Arolla, principalement entre Pramousse et Satarma, o\u00f9 son lit est tr\u00e8s large\u00bb, explique S\u00e9bastien de Meris, \u00e9tudiant de master et participant au camp. Dans le cadre de l\u2019exercice, il s\u2019agissait de proposer des mesures de gestion des s\u00e9diments charri\u00e9s par la rivi\u00e8re. Celle-ci se trouve dans un mauvais \u00e9tat \u00e9cologique. En amont, la prise d\u2019eau de Bertol Inf\u00e9rieur redirige une partie de l\u2019eau pour les besoins de l\u2019hydro\u00e9lectricit\u00e9. Les changements climatiques sont \u00e9galement en cause.<\/p>\n<p>Le groupe de S\u00e9bastien de Meris a \u00e9t\u00e9 charg\u00e9 de mod\u00e9liser une digue destin\u00e9e \u00e0 mieux canaliser la rivi\u00e8re. \u00abAinsi, la Borgne ne s\u2019\u00e9talerait plus. Son d\u00e9bit plus \u00e9lev\u00e9 lui permettrait de transporter davantage de s\u00e9diments. Au passage, cela limiterait l\u2019\u00e9rosion des berges et revitaliserait la plaine proche de l\u2019eau.\u00bb<\/p>\n<p>\u00c0 suivre sur Instagram <a href=\"https:\/\/www.instagram.com\/sebdemeris\" target=\"_blank\" rel=\"noopener noreferrer\">@sebdemeris<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>En mai, des \u00e9tudiants de la Facult\u00e9 des g\u00e9osciences et de l\u2019environnement ont suivi un cours d\u2019une semaine en Valais, dans le but de mettre en pratique les m\u00e9thodes apprises &hellip; <\/p>\n","protected":false},"author":825,"featured_media":9892,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_seopress_robots_primary_cat":"","_seopress_titles_title":"","_seopress_titles_desc":"","_seopress_robots_index":"","footnotes":""},"categories":[39,42184,11],"tags":[39521],"class_list":{"0":"post-9994","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-geosciences","8":"category-no-73","9":"category-portfolio","10":"tag-david-spring"},"_links":{"self":[{"href":"https:\/\/wp.unil.ch\/allezsavoir\/wp-json\/wp\/v2\/posts\/9994","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wp.unil.ch\/allezsavoir\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/wp.unil.ch\/allezsavoir\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/wp.unil.ch\/allezsavoir\/wp-json\/wp\/v2\/users\/825"}],"replies":[{"embeddable":true,"href":"https:\/\/wp.unil.ch\/allezsavoir\/wp-json\/wp\/v2\/comments?post=9994"}],"version-history":[{"count":0,"href":"https:\/\/wp.unil.ch\/allezsavoir\/wp-json\/wp\/v2\/posts\/9994\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/wp.unil.ch\/allezsavoir\/wp-json\/wp\/v2\/media\/9892"}],"wp:attachment":[{"href":"https:\/\/wp.unil.ch\/allezsavoir\/wp-json\/wp\/v2\/media?parent=9994"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wp.unil.ch\/allezsavoir\/wp-json\/wp\/v2\/categories?post=9994"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wp.unil.ch\/allezsavoir\/wp-json\/wp\/v2\/tags?post=9994"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}