{"id":3838,"date":"2018-02-20T17:45:36","date_gmt":"2018-02-20T16:45:36","guid":{"rendered":"http:\/\/wp.unil.ch\/risk\/?p=3838"},"modified":"2018-02-20T17:45:36","modified_gmt":"2018-02-20T16:45:36","slug":"jean%e2%80%90marie-vuignier-caracterisation-de-la-source-sedimentaire-et-estimation-du-budget-sedimentaire-dans-le-bassin-versant-de-jatun-mayu-cochabamba-bolivie","status":"publish","type":"post","link":"https:\/\/wp.unil.ch\/risk\/jean%e2%80%90marie-vuignier-caracterisation-de-la-source-sedimentaire-et-estimation-du-budget-sedimentaire-dans-le-bassin-versant-de-jatun-mayu-cochabamba-bolivie\/","title":{"rendered":"Jean?Marie Vuignier: Caract\u00e9risation de la source s\u00e9dimentaire et estimation du budget s\u00e9dimentaire dans le bassin versant de Jat\u00fan Mayu (Cochabamba, Bolivie)"},"content":{"rendered":"<p><em>Jean?Marie Vuignier<\/em><br \/>\n<em> Director: Prof. Michel Jaboyedoff<\/em><br \/>\n<em> Co?director: Dr. Ivanna Penna<\/em><br \/>\n<em> Experts: Prof. Stuart Lane, Dr. Karen Sudmeier?Rieux<\/em><\/p>\n<p style=\"text-align: justify\">Natural and human-induced erosive processes shape landscape by transferring masses from&nbsp;the mountain to downstream areas. They also impact population both located in the source&nbsp;areas of sediments as well as urban areas settle on the depositional area. Mountain areas in&nbsp;Bolivia present high surface dynamics and high rates of rural migrations, causing e.g. a&nbsp;significant increase of population in Cochabamba city in the last 20 years. This work aims to&nbsp;estimate the sediment production on the Jat\u00fan Mayu watershed in Cochabamba department&nbsp;taking into account the different origins of sediments.<\/p>\n<p style=\"text-align: justify\">The region of study consists of a mountain area situated in the Andes with altitudes ranging&nbsp;from 2500 to 4600m. Fieldwork on July 2014 and high-resolution satellite image<br \/>\ninterpretation (2004 &amp; 2009) allowed mapping and measuring landslides and gullies. A<br \/>\nhundred of landslides are recorded mostly around the river channel. Most of the gullies are<br \/>\nsituated in the upper part of the valley where the vegetation is less abundant on low-sloping&nbsp;agricultural lands.<\/p>\n<p style=\"text-align: justify\">Photogrammetric reconstructions using camera and drone were the main method used to<br \/>\ncharacterize some strategic points along the river in order to get dimensions of landslides,<br \/>\ngullies, as well as the riverbed roughness, as the final goal was to model floods at the mouth&nbsp;of the watershed, where migrants have been settling for the last years. A total of 9 points of&nbsp;interests along the riverbed were surveyed and for each of them a square 5x5m surface was&nbsp;analyzed. Approximately 250 pictures by area were needed to estimate roughness along the&nbsp;channel. A flood model has been performed, by using the Riverflo-2D Plus software, to&nbsp;produce a model of the downstream region.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Jean?Marie Vuignier Director: Prof. Michel Jaboyedoff Co?director: Dr. Ivanna Penna Experts: Prof. Stuart Lane, Dr. Karen Sudmeier?Rieux Natural and human-induced erosive processes shape landscape by transferring masses from&nbsp;the mountain to &hellip; <\/p>\n","protected":false},"author":1341,"featured_media":3839,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_seopress_robots_primary_cat":"","_seopress_titles_title":"","_seopress_titles_desc":"","_seopress_robots_index":"","ngg_post_thumbnail":0,"footnotes":""},"categories":[73758],"tags":[75174],"class_list":{"0":"post-3838","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-masters_completed","8":"tag-75174"},"_links":{"self":[{"href":"https:\/\/wp.unil.ch\/risk\/wp-json\/wp\/v2\/posts\/3838","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wp.unil.ch\/risk\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/wp.unil.ch\/risk\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/wp.unil.ch\/risk\/wp-json\/wp\/v2\/users\/1341"}],"replies":[{"embeddable":true,"href":"https:\/\/wp.unil.ch\/risk\/wp-json\/wp\/v2\/comments?post=3838"}],"version-history":[{"count":0,"href":"https:\/\/wp.unil.ch\/risk\/wp-json\/wp\/v2\/posts\/3838\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/wp.unil.ch\/risk\/wp-json\/wp\/v2\/media\/3839"}],"wp:attachment":[{"href":"https:\/\/wp.unil.ch\/risk\/wp-json\/wp\/v2\/media?parent=3838"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wp.unil.ch\/risk\/wp-json\/wp\/v2\/categories?post=3838"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wp.unil.ch\/risk\/wp-json\/wp\/v2\/tags?post=3838"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}