{"id":6059,"date":"2025-12-16T14:10:56","date_gmt":"2025-12-16T13:10:56","guid":{"rendered":"https:\/\/www.ginger-burgeap.com\/?p=6059"},"modified":"2025-12-16T14:10:58","modified_gmt":"2025-12-16T13:10:58","slug":"mesurer-le-transport-solide-par-charriage-un-enjeu-cle-pour-comprendre-et-gerer-nos-rivieres","status":"publish","type":"post","link":"https:\/\/www.ginger-burgeap.com\/en\/mesurer-le-transport-solide-par-charriage-un-enjeu-cle-pour-comprendre-et-gerer-nos-rivieres\/","title":{"rendered":"Mesurer le transport solide par charriage : un enjeu cl\u00e9 pour comprendre et g\u00e9rer nos rivi\u00e8res"},"content":{"rendered":"\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<div class=\"x-resp-embed x-is-video x-is-youtube\"><iframe loading=\"lazy\" title=\"M\u00e9trologie du charriage par mesure acoustique et sismique faite sur passerelle du DRAC\" width=\"842\" height=\"474\" src=\"https:\/\/www.youtube.com\/embed\/Hp4h8LDfOxM?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/div>\n<\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Nous avons eu le plaisir d&#8217;animer une \u00ab p\u00eache au cas pratique \u00bb de l&#8217;Association Rivi\u00e8re Rh\u00f4ne-Alpes Auvergne (ARRA\u00b2) le 17 avril 2025 \u00e0 Saint-Martin-d\u2019H\u00e8res (Is\u00e8re), consacr\u00e9e \u00e0 la m\u00e9trologie du charriage par mesures acoustiques et sismiques.<br>Ces m\u00e9thodes sont aujourd\u2019hui pleinement op\u00e9rationnelles apr\u00e8s plus de 15 ans de recherche, plusieurs th\u00e8ses et un large partenariat scientifique associant EDF, INRAE, IGE (Universit\u00e9 Grenoble Alpes), l\u2019Universit\u00e9 de Tours et le bureau d\u2019\u00e9tudes Ginger BURGEAP.<br>Et si l\u2019on fouille les archives, les premi\u00e8res \u00e9coutes acoustiques du charriage remontent\u2026 aux ann\u00e9es 1950, r\u00e9alis\u00e9es par les \u00e9quipes EDF sur l\u2019Is\u00e8re et la Romanche !<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Pourquoi mesurer le charriage ?<\/strong><br>Le charriage correspond au transport de s\u00e9diments grossiers dans le fond des cours d\u2019eau (sables grossiers, graviers, galets). Il influence :<br>\u2022 la <strong>morphologie<\/strong> des rivi\u00e8res,<br>\u2022 la <strong>biodiversit\u00e9<\/strong> (habitats aquatiques, v\u00e9g\u00e9tation, etc.),<br>\u2022 la <strong>s\u00e9curit\u00e9<\/strong> (inondations, s\u00fbret\u00e9 des ouvrages),<br>\u2022 les <strong>usages socio-\u00e9conomiques<\/strong> (hydro\u00e9lectricit\u00e9, navigation, eau potable, loisirs\u2026).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u2019est donc un enjeu majeur pour les collectivit\u00e9s GEMAPI, les gestionnaires d\u2019ouvrages hydrauliques, mais \u00e9galement pour les scientifiques et le monde associatif.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;<strong>Acoustique &amp; sismique : des approches d\u00e9sormais op\u00e9rationnelles<\/strong><br>Les mesures indirectes par acoustique (hydrophone) ou sismique (g\u00e9ophone) enregistrent les ondes produites par les chocs entre s\u00e9diments au fond du lit. Ces signaux peuvent \u00eatre corr\u00e9l\u00e9s \u00e0 des mesures directes du charriage. Le d\u00e9veloppement de l\u2019outil d\u00e9di\u00e9 RiverSound\u00a9 permet aujourd\u2019hui de structurer l\u2019interpr\u00e9tation des mesures.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ces approches permettent :<br>\u2022 un <strong>suivi continu<\/strong> des flux de charriage,<br>\u2022 des <strong>bilans s\u00e9dimentaires<\/strong> instantan\u00e9s, journaliers, mensuels ou annuels,<br>\u2022 une <strong>estimation de la granulom\u00e9trie<\/strong> en transit,<br>\u2022 une analyse de la <strong>dynamique du charriage<\/strong> : d\u00e9bit de d\u00e9but de charriage, variabilit\u00e9 du charriage pour un m\u00eame d\u00e9bit, saisonnalit\u00e9 du charriage, etc.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Elles sont compl\u00e9mentaires de mesures hydrom\u00e9triques, bathym\u00e9triques, mati\u00e8res en suspension, RFID, etc. Elles sont utiles pour :<br>\u2022 approfondir les <strong>connaissances scientifiques<\/strong>,<br>\u2022 <strong>caler des mod\u00e8les<\/strong> hydros\u00e9dimentaires,<br>\u2022 <strong>piloter<\/strong> un site de gestion s\u00e9dimentaire,<br>\u2022 \u00e9valuer l\u2019aggravation des <strong>risques d\u2019inondation<\/strong>,<br>\u2022 estimer les <strong>effets d\u2019un projet de restauration<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udef0\ufe0f <strong>Retours d\u2019exp\u00e9rience &amp; d\u00e9monstrations<\/strong><br>La journ\u00e9e a \u00e9t\u00e9 anim\u00e9e avec :<br>\u2022 des retours d\u2019exp\u00e9rience sur le Drac (avec le SYMBHI) et sur la Loire (Universit\u00e9 de Tours),<br>\u2022 des ateliers de d\u00e9monstrations sur l\u2019Is\u00e8re voisine : station hydrophone en berge, cartographie acoustique, exposition du mat\u00e9riel.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Merci \u00e0 l\u2019ARRA\u00b2 pour l\u2019organisation, ainsi qu\u2019\u00e0 l\u2019ensemble des partenaires mobilis\u00e9s : <strong>EDF, SYMBHI, INRAE, Universit\u00e9 de Tours<\/strong>, et bien s\u00fbr l\u2019\u00e9quipe <strong>Ginger BURGEAP<\/strong> impliqu\u00e9e dans les animations.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/www.ginger-burgeap.com\/wp-content\/uploads\/2025\/12\/250417_ARRA\u00b2_Mesure_Charriage.pdf\">Compte-rendu en fran\u00e7ais<\/a><br><a href=\"https:\/\/www.ginger-burgeap.com\/wp-content\/uploads\/2025\/12\/250417_ARRA\u00b2_Mesure_Charriage-en-US.pdf\">Compte-rendu en anglais<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Nous avons eu le plaisir d&#8217;animer une \u00ab p\u00eache au cas pratique \u00bb de l&#8217;Association Rivi\u00e8re Rh\u00f4ne-Alpes Auvergne (ARRA\u00b2) le 17 avril 2025 \u00e0 Saint-Martin-d\u2019H\u00e8res (Is\u00e8re), consacr\u00e9e \u00e0 la m\u00e9trologie du charriage par mesures acoustiques et sismiques.Ces m\u00e9thodes sont aujourd\u2019hui pleinement op\u00e9rationnelles apr\u00e8s plus de 15 ans de recherche, plusieurs th\u00e8ses et un large partenariat scientifique associant EDF, INRAE, IGE &#8230;<\/p>\n","protected":false},"author":9,"featured_media":6057,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[947,1579],"tags":[],"class_list":["post-6059","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actu","category-rdd-eaux-surface"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.7 (Yoast SEO v27.9) - 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