{"id":28712,"date":"2025-09-02T12:00:42","date_gmt":"2025-09-02T10:00:42","guid":{"rendered":"https:\/\/asso.graie.org\/portail\/?p=28712"},"modified":"2026-04-21T11:17:14","modified_gmt":"2026-04-21T09:17:14","slug":"cafe-osr-n3-lobservation-hydro-sedimentaire-de-long-terme-et-a-large-echelle-comment-quantifier-les-flux-de-matieres-en-suspension-et-de-contaminants","status":"publish","type":"post","link":"https:\/\/asso.graie.org\/portail\/cafe-osr-n3-lobservation-hydro-sedimentaire-de-long-terme-et-a-large-echelle-comment-quantifier-les-flux-de-matieres-en-suspension-et-de-contaminants\/","title":{"rendered":"REPLAY I Caf\u00e9 OSR n\u00b03 | L\u2019observation hydro-s\u00e9dimentaire de long terme et \u00e0 large \u00e9chelle"},"content":{"rendered":"\n<figure class=\"wp-block-image size-large is-style-default\"><img decoding=\"async\" loading=\"lazy\" width=\"1024\" height=\"246\" src=\"https:\/\/asso.graie.org\/portail\/wp-content\/uploads\/2025\/09\/Banniere_Cafe_OSR_3-1024x246.jpg\" alt=\"\" class=\"wp-image-28714\" srcset=\"https:\/\/asso.graie.org\/portail\/wp-content\/uploads\/2025\/09\/Banniere_Cafe_OSR_3-1024x246.jpg 1024w, https:\/\/asso.graie.org\/portail\/wp-content\/uploads\/2025\/09\/Banniere_Cafe_OSR_3-300x72.jpg 300w, https:\/\/asso.graie.org\/portail\/wp-content\/uploads\/2025\/09\/Banniere_Cafe_OSR_3-768x185.jpg 768w, https:\/\/asso.graie.org\/portail\/wp-content\/uploads\/2025\/09\/Banniere_Cafe_OSR_3-1536x369.jpg 1536w, https:\/\/asso.graie.org\/portail\/wp-content\/uploads\/2025\/09\/Banniere_Cafe_OSR_3-2048x492.jpg 2048w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading has-text-align-center\">Lundi 29 septembre 2025<\/h2>\n\n\n\n<h3 class=\"wp-block-heading has-text-align-center\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">13h30-14h30<\/mark><\/strong><\/h3>\n\n\n\n<p class=\"has-text-align-center\"><strong>En visioconf\u00e9rence<\/strong><\/p>\n\n\n\n<div style=\"height:48px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-buttons is-content-justification-center is-layout-flex wp-container-1 wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link has-white-color has-vivid-cyan-blue-background-color has-text-color has-background wp-element-button\" href=\"https:\/\/youtu.be\/nCPFUbVd3ZU\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>Replay vid\u00e9o<\/strong><\/a><\/div>\n\n\n\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link has-white-color has-vivid-cyan-blue-background-color has-text-color has-background wp-element-button\" href=\"https:\/\/hal.science\/OSR\/hal-05293907\"><strong>Pr\u00e9sentation<\/strong><\/a><\/div>\n<\/div>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<div style=\"height:29px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>Afin de partager, discuter et de diffuser largement ses r\u00e9sultats, l\u2019<strong><a href=\"https:\/\/observatoire-sediments-rhone.fr\/\">Observatoire des S\u00e9diments du Rh\u00f4ne (OSR)<\/a> <\/strong>propose un <strong>rendez-vous trimestriel en ligne, ouvert et gratuit : le caf\u00e9 OSR.<\/strong><\/p>\n\n\n\n<p>Ce moment privil\u00e9gi\u00e9 d\u2019\u00e9change va permettre de&nbsp;croiser les connaissances et les m\u00e9thodes de l\u2019observatoire avec les enjeux et les exp\u00e9riences de la gestion hydros\u00e9dimentaire des cours d\u2019eau.<\/p>\n\n\n\n<div style=\"height:21px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>Le prochain caf\u00e9 OSR aura lieu <strong><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">le lundi 29 septembre 2025 de 13h30 \u00e0 14h30 en visio-conf\u00e9rence. <\/mark><\/strong><\/strong>Il aura pour th\u00e9matique <strong>\u00ab\u00a0L\u2019observation hydro-s\u00e9dimentaire de long terme et \u00e0 large \u00e9chelle : comment quantifier les flux de mati\u00e8res en suspension et de contaminants ?\u00a0\u00bb.<\/strong> &nbsp;<\/p>\n\n\n\n<div style=\"height:19px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>Ce temps&nbsp;d<strong>\u2019<\/strong>\u00e9change<strong>&nbsp;<\/strong>permettra de restituer les travaux engag\u00e9s sur le Rh\u00f4ne afin de mesurer les flux de mati\u00e8res en suspension et de contaminants associ\u00e9s.<\/p>\n\n\n\n<div style=\"height:81px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">Au programme<\/h2>\n\n\n\n<div style=\"height:24px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p><strong>J\u00e9r\u00f4me Labille (CNRS)<\/strong>&nbsp;et Fabien&nbsp;<strong>Thollet (CNRS)<\/strong>&nbsp;d\u00e9tailleront le travail d\u2019observation r\u00e9alis\u00e9 gr\u00e2ce au r\u00e9seau de mesure de l\u2019OSR pour&nbsp;<strong>quantifier les flux et identifier l\u2019origine des flux de s\u00e9diment et de contaminants<\/strong>. Ils pr\u00e9senteront les \u00e9quipements de mesure install\u00e9s le long du Rh\u00f4ne et de ses principaux affluents ainsi que les protocoles de collectes et d\u2019analyse des s\u00e9diments et des contaminants. Ils donneront \u00e9galement \u00e0 voir les principaux r\u00e9sultats apr\u00e8s plus de 15 ans d\u2019observation, ce qui permet d\u2019avoir une vision pr\u00e9cise de la dynamique du transport hydros\u00e9dimentaire dans le fleuve, du Lac L\u00e9man \u00e0 la M\u00e9diterran\u00e9e.<\/p>\n\n\n\n<div style=\"height:16px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p><strong>Sylvain Reynaud (CNR)<\/strong>&nbsp;et <strong>C\u00e9dric Fisson (GIP Seine-Aval)<\/strong> interviendront en tant que discutants. Ils partageront leurs questions et apporteront leurs expertises afin de&nbsp;<strong>r\u00e9fl\u00e9chir \u00e0 l\u2019int\u00e9r\u00eat scientifique et aux apports op\u00e9rationnels<\/strong>&nbsp;d\u2019un dispositif d\u2019observation \u00e0 large \u00e9chelle spatiale et temporelle tel que celui par l\u2019OSR.<\/p>\n\n\n\n<div style=\"height:16px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>La pr\u00e9sentation sera suivie d\u2019un temps de&nbsp;<strong>discussion&nbsp;<\/strong>avec toutes les participantes et tous les participants.<\/p>\n\n\n\n<div style=\"height:79px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">Les caf\u00e9s OSR<\/h2>\n\n\n\n<div style=\"height:19px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>Sur le mod\u00e8le des caf\u00e9s ZABR, les caf\u00e9s OSR sont de courtes s\u00e9quences de pr\u00e9sentation et d\u2019\u00e9changes (1h-1h30) organis\u00e9es en visio-conf\u00e9rence.&nbsp;<\/p>\n\n\n\n<p><strong>Leur but ?<\/strong>&nbsp;Partager les enjeux, les m\u00e9thodes et les r\u00e9sultats scientifiques de l\u2019OSR et \u00e9changer sur leurs apports pour la gestion hydros\u00e9dimentaire des cours d\u2019eau.&nbsp;<\/p>\n\n\n\n<p><strong>Pour qui ?<\/strong>&nbsp;Les caf\u00e9s OSR sont ouverts aux scientifiques, gestionnaires (du Rh\u00f4ne et d\u2019ailleurs), bureaux d\u2019\u00e9tudes, et \u00e0 tous les partenaires et acteurs int\u00e9ress\u00e9s.<\/p>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<figure class=\"wp-block-image size-large is-style-default\"><img decoding=\"async\" loading=\"lazy\" width=\"1024\" height=\"246\" src=\"https:\/\/asso.graie.org\/portail\/wp-content\/uploads\/2025\/10\/logos_Cafe_OSR-1024x246.jpg\" alt=\"\" class=\"wp-image-29382\" srcset=\"https:\/\/asso.graie.org\/portail\/wp-content\/uploads\/2025\/10\/logos_Cafe_OSR-1024x246.jpg 1024w, https:\/\/asso.graie.org\/portail\/wp-content\/uploads\/2025\/10\/logos_Cafe_OSR-300x72.jpg 300w, https:\/\/asso.graie.org\/portail\/wp-content\/uploads\/2025\/10\/logos_Cafe_OSR-768x185.jpg 768w, https:\/\/asso.graie.org\/portail\/wp-content\/uploads\/2025\/10\/logos_Cafe_OSR-1536x369.jpg 1536w, https:\/\/asso.graie.org\/portail\/wp-content\/uploads\/2025\/10\/logos_Cafe_OSR-2048x492.jpg 2048w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>Acteurs techniques de l\u2019eau, porteurs de politiques agro-environnementales, venez d\u00e9couvrir des outils int\u00e9gratifs chimiques et biologiques d\u00e9velopp\u00e9s afin d\u2019am\u00e9liorer le diagnostic de contamination des eaux de surface et des s\u00e9diments.<\/p>\n","protected":false},"author":16,"featured_media":28714,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_mi_skip_tracking":false,"footnotes":""},"categories":[24,589,74,28],"tags":[433],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v19.13 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>REPLAY I Caf\u00e9 OSR n\u00b03 | L\u2019observation hydro-s\u00e9dimentaire de long terme et \u00e0 large \u00e9chelle | Graie<\/title>\n<meta name=\"description\" content=\"Ce webinaire a permis de restituer les travaux engag\u00e9s sur le Rh\u00f4ne afin de mesurer les flux de mati\u00e8res en suspension et de contaminants associ\u00e9s.\" \/>\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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