{"id":12705,"date":"2025-07-31T09:38:31","date_gmt":"2025-07-31T07:38:31","guid":{"rendered":"https:\/\/pelagos-sanctuary.org\/?p=12705"},"modified":"2025-07-31T09:48:22","modified_gmt":"2025-07-31T07:48:22","slug":"un-ocean-plus-silencieux-pour-le-sanctuaire-pelagos-etude-sur-le-trafic-maritime-et-le-bruit-sous-marin","status":"publish","type":"post","link":"https:\/\/pelagos-sanctuary.org\/fr\/un-ocean-plus-silencieux-pour-le-sanctuaire-pelagos-etude-sur-le-trafic-maritime-et-le-bruit-sous-marin\/","title":{"rendered":"Un oc\u00e9an plus silencieux pour le Sanctuaire Pelagos: \u00e9tude sur le trafic maritime et le bruit sous-marin"},"content":{"rendered":"<p><div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-1 fusion-flex-container nonhundred-percent-fullwidth non-hundred-percent-height-scrolling\" style=\"--awb-border-radius-top-left:0px;--awb-border-radius-top-right:0px;--awb-border-radius-bottom-right:0px;--awb-border-radius-bottom-left:0px;--awb-flex-wrap:wrap;\" ><div class=\"fusion-builder-row fusion-row fusion-flex-align-items-flex-start fusion-flex-content-wrap\" style=\"max-width:1216.8px;margin-left: calc(-4% \/ 2 );margin-right: calc(-4% \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-0 fusion_builder_column_1_1 1_1 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:100%;--awb-margin-top-large:0px;--awb-spacing-right-large:1.92%;--awb-margin-bottom-large:0px;--awb-spacing-left-large:1.92%;--awb-width-medium:100%;--awb-spacing-right-medium:1.92%;--awb-spacing-left-medium:1.92%;--awb-width-small:100%;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\"><div class=\"fusion-column-wrapper fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-text fusion-text-1\"><\/div><\/div><\/div><\/div><\/div><div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-2 fusion-flex-container has-pattern-background has-mask-background fusion-parallax-none nonhundred-percent-fullwidth non-hundred-percent-height-scrolling lazyload\" style=\"--awb-border-radius-top-left:0px;--awb-border-radius-top-right:0px;--awb-border-radius-bottom-right:0px;--awb-border-radius-bottom-left:0px;--awb-padding-top:126px;--awb-padding-bottom:0px;--awb-background-size:cover;--awb-flex-wrap:wrap;\" data-bg=\"https:\/\/pelagos-sanctuary.org\/wp-content\/uploads\/2023\/07\/\u00a9Marie-Lariviere-MIRACETI_Delphinus-delphis.jpg\" ><div class=\"fusion-builder-row fusion-row fusion-flex-align-items-flex-end fusion-flex-content-wrap\" style=\"max-width:1216.8px;margin-left: calc(-4% \/ 2 );margin-right: calc(-4% \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-1 fusion_builder_column_1_1 1_1 fusion-flex-column fusion-flex-align-self-flex-end\" style=\"--awb-bg-size:cover;--awb-width-large:100%;--awb-margin-top-large:0px;--awb-spacing-right-large:1.92%;--awb-margin-bottom-large:0px;--awb-spacing-left-large:1.92%;--awb-width-medium:100%;--awb-order-medium:0;--awb-spacing-right-medium:1.92%;--awb-spacing-left-medium:1.92%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\" data-motion-effects=\"[{&quot;type&quot;:&quot;&quot;,&quot;scroll_type&quot;:&quot;transition&quot;,&quot;scroll_direction&quot;:&quot;up&quot;,&quot;transition_speed&quot;:&quot;1&quot;,&quot;fade_type&quot;:&quot;in&quot;,&quot;scale_type&quot;:&quot;up&quot;,&quot;initial_scale&quot;:&quot;1&quot;,&quot;max_scale&quot;:&quot;1.5&quot;,&quot;min_scale&quot;:&quot;0.5&quot;,&quot;initial_rotate&quot;:&quot;0&quot;,&quot;end_rotate&quot;:&quot;30&quot;,&quot;initial_blur&quot;:&quot;0&quot;,&quot;end_blur&quot;:&quot;3&quot;,&quot;start_element&quot;:&quot;top&quot;,&quot;start_viewport&quot;:&quot;bottom&quot;,&quot;end_element&quot;:&quot;bottom&quot;,&quot;end_viewport&quot;:&quot;top&quot;,&quot;mouse_effect&quot;:&quot;track&quot;,&quot;mouse_effect_direction&quot;:&quot;opposite&quot;,&quot;mouse_effect_speed&quot;:&quot;2&quot;,&quot;infinite_animation&quot;:&quot;float&quot;,&quot;infinite_animation_speed&quot;:&quot;2&quot;}]\" data-scroll-devices=\"small-visibility,medium-visibility,large-visibility\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-center fusion-content-layout-column\"><div class=\"fusion-title title fusion-title-1 fusion-sep-none fusion-title-text fusion-title-size-one\" style=\"--awb-text-color:#ffffff;--awb-font-size:45px;\"><h1 class=\"fusion-title-heading title-heading-left\" style=\"font-family:&quot;Raleway&quot;;font-style:normal;font-weight:400;margin:0;font-size:1em;text-transform:uppercase;line-height:1.6rem;\"><div class=\"page-header\">\n<h1 class=\"style-scope ytd-watch-metadata\" style=\"text-align: center;\"><b>Un oc\u00e9an plus silencieux pour le Sanctuaire Pelagos : \u00e9tude sur le trafic maritime et le bruit sous-marin<br \/><\/b><\/h1>\n<\/div><\/h1><\/div><\/div><\/div><\/div><\/div><div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-3 fusion-flex-container nonhundred-percent-fullwidth non-hundred-percent-height-scrolling\" style=\"--awb-border-radius-top-left:0px;--awb-border-radius-top-right:0px;--awb-border-radius-bottom-right:0px;--awb-border-radius-bottom-left:0px;--awb-flex-wrap:wrap;\" ><div class=\"fusion-builder-row fusion-row fusion-flex-align-items-flex-start fusion-flex-content-wrap\" style=\"max-width:1216.8px;margin-left: calc(-4% \/ 2 );margin-right: calc(-4% \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-2 fusion_builder_column_1_1 1_1 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:100%;--awb-margin-top-large:0px;--awb-spacing-right-large:1.92%;--awb-margin-bottom-large:0px;--awb-spacing-left-large:1.92%;--awb-width-medium:100%;--awb-spacing-right-medium:1.92%;--awb-spacing-left-medium:1.92%;--awb-width-small:100%;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\"><div class=\"fusion-column-wrapper fusion-flex-justify-content-flex-start fusion-content-layout-column\"><\/div><\/div><\/div><\/div><div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-4 fusion-flex-container has-pattern-background has-mask-background nonhundred-percent-fullwidth non-hundred-percent-height-scrolling\" style=\"--awb-background-position:left top;--awb-border-sizes-top:0px;--awb-border-sizes-bottom:0px;--awb-border-sizes-left:0px;--awb-border-sizes-right:0px;--awb-border-radius-top-left:0px;--awb-border-radius-top-right:0px;--awb-border-radius-bottom-right:0px;--awb-border-radius-bottom-left:0px;--awb-padding-top:90px;--awb-padding-bottom:0px;--awb-flex-wrap:wrap;\" ><div class=\"fusion-builder-row fusion-row fusion-flex-align-items-flex-start fusion-flex-content-wrap\" style=\"max-width:1216.8px;margin-left: calc(-4% \/ 2 );margin-right: calc(-4% \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-3 fusion_builder_column_1_6 1_6 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:16.666666666667%;--awb-margin-top-large:0px;--awb-spacing-right-large:11.52%;--awb-margin-bottom-large:20px;--awb-spacing-left-large:11.52%;--awb-width-medium:100%;--awb-order-medium:0;--awb-spacing-right-medium:1.92%;--awb-spacing-left-medium:1.92%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><\/div><\/div><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-4 fusion_builder_column_2_3 2_3 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:66.666666666667%;--awb-margin-top-large:0px;--awb-spacing-right-large:2.88%;--awb-margin-bottom-large:20px;--awb-spacing-left-large:2.88%;--awb-width-medium:100%;--awb-order-medium:0;--awb-spacing-right-medium:1.92%;--awb-spacing-left-medium:1.92%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-text fusion-text-2\"><p><span style=\"font-weight: 400;\">L\u2019Accord Pelagos poursuit son engagement pour la protection de l\u2019\u00e9cosyst\u00e8me marin du Sanctuaire : un projet a \u00e9t\u00e9 men\u00e9 pour \u00e9valuer la distribution du trafic maritime et du bruit sous-marin d\u2019origine anthropique, afin d\u2019analyser l\u2019un des impacts les plus insidieux mais les moins visibles pour la faune marine.<\/span><\/p>\n<h2><b>Un projet au service de la conservation<br \/><\/b><\/h2>\n<p><span style=\"font-weight: 400;\">L\u2019\u00e9tude, confi\u00e9e \u00e0 l\u2019institut fran\u00e7ais <\/span><a href=\"https:\/\/www.quiet-oceans.com\/\"><span style=\"font-weight: 400;\">Quiet-Oceans<\/span><\/a><span style=\"font-weight: 400;\">, sp\u00e9cialis\u00e9 en acoustique marine, s\u2019est concentr\u00e9e sur quatre objectifs principaux :<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">analyser la <\/span><b>distribution saisonni\u00e8re du trafic maritime<\/b><span style=\"font-weight: 400;\">, commercial et de plaisance ;<\/span><span style=\"font-weight: 400;\">\n<p><\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>cartographier le bruit sous-marin<\/b><span style=\"font-weight: 400;\"> g\u00e9n\u00e9r\u00e9 par les activit\u00e9s humaines ;<\/span><span style=\"font-weight: 400;\">\n<p><\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u00e9valuer les <\/span><b>risques associ\u00e9s au bruit continu de basse fr\u00e9quence<\/b><span style=\"font-weight: 400;\"> pour les esp\u00e8ces sensibles;<\/span><span style=\"font-weight: 400;\">\n<p><\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">d\u00e9finir un <\/span><b>plan op\u00e9rationnel pour les analyses et strat\u00e9gies futures<\/b><span style=\"font-weight: 400;\">, \u00e0 partager avec les groupes de travail de l\u2019Accord.<\/span><span style=\"font-weight: 400;\"><br \/><\/span><\/p>\n<h2><img decoding=\"async\" class=\"lazyload alignnone  wp-image-12666 aligncenter\" src=\"https:\/\/pelagos-sanctuary.org\/wp-content\/uploads\/2025\/07\/PELAGOS_Map_Project2_MarineTrafficNoise-300x169.jpg\" data-orig-src=\"https:\/\/pelagos-sanctuary.org\/wp-content\/uploads\/2025\/07\/PELAGOS_Map_Project2_MarineTrafficNoise-300x169.jpg\" alt=\"\" width=\"763\" height=\"430\" srcset=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%27%20width%3D%27763%27%20height%3D%27430%27%20viewBox%3D%270%200%20763%20430%27%3E%3Crect%20width%3D%27763%27%20height%3D%27430%27%20fill-opacity%3D%220%22%2F%3E%3C%2Fsvg%3E\" data-srcset=\"https:\/\/pelagos-sanctuary.org\/wp-content\/uploads\/2025\/07\/PELAGOS_Map_Project2_MarineTrafficNoise-200x112.jpg 200w, https:\/\/pelagos-sanctuary.org\/wp-content\/uploads\/2025\/07\/PELAGOS_Map_Project2_MarineTrafficNoise-300x169.jpg 300w, https:\/\/pelagos-sanctuary.org\/wp-content\/uploads\/2025\/07\/PELAGOS_Map_Project2_MarineTrafficNoise-400x225.jpg 400w, https:\/\/pelagos-sanctuary.org\/wp-content\/uploads\/2025\/07\/PELAGOS_Map_Project2_MarineTrafficNoise-600x337.jpg 600w, https:\/\/pelagos-sanctuary.org\/wp-content\/uploads\/2025\/07\/PELAGOS_Map_Project2_MarineTrafficNoise-768x432.jpg 768w, https:\/\/pelagos-sanctuary.org\/wp-content\/uploads\/2025\/07\/PELAGOS_Map_Project2_MarineTrafficNoise-800x450.jpg 800w, https:\/\/pelagos-sanctuary.org\/wp-content\/uploads\/2025\/07\/PELAGOS_Map_Project2_MarineTrafficNoise-1024x576.jpg 1024w, https:\/\/pelagos-sanctuary.org\/wp-content\/uploads\/2025\/07\/PELAGOS_Map_Project2_MarineTrafficNoise-1200x675.jpg 1200w, https:\/\/pelagos-sanctuary.org\/wp-content\/uploads\/2025\/07\/PELAGOS_Map_Project2_MarineTrafficNoise-1536x864.jpg 1536w\" data-sizes=\"auto\" data-orig-sizes=\"(max-width: 763px) 100vw, 763px\" \/><\/h2>\n<h2><b>Des outils de pointe pour un d\u00e9fi complexe<br \/><\/b><\/h2>\n<p><span style=\"font-weight: 400;\">Pour atteindre ces objectifs, Quiet-Oceans utilise deux plateformes technologiques avanc\u00e9es :<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>OceanPlanner\u00a9<\/b><span style=\"font-weight: 400;\">, n outil d\u2019analyse et de visualisation des donn\u00e9es AIS (Automatic Identification System), permettant d\u2019identifier les sch\u00e9mas de navigation, d\u2019\u00e9valuer les risques et de hi\u00e9rarchiser les interventions;<\/span><span style=\"font-weight: 400;\">\n<p><\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Quonops\u00a9<\/b><span style=\"font-weight: 400;\">, une plateforme de mod\u00e9lisation pour la pr\u00e9vision et la cartographie du bruit sous-marin, prenant en compte des param\u00e8tres environnementaux et anthropiques tels que la bathym\u00e9trie, les vents, la nature des fonds, la salinit\u00e9 et le trafic maritime.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Ces outils permettent de g\u00e9n\u00e9rer des <\/span><b>cartes saisonni\u00e8res du trafic et du bruit<\/b><span style=\"font-weight: 400;\">, d\u2019estimer les niveaux de pression acoustique sous-marine et d\u2019identifier les zones et p\u00e9riodes critiques pour la faune marine.<\/span><\/p>\n<h2>&nbsp;<\/h2>\n<h2><b>R\u00e9sultats<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">L\u2019analyse repose sur plus de <\/span><b>60 millions de positions AIS (Automatic Identification System) collect\u00e9es<\/b><span style=\"font-weight: 400;\"> entre 2019 et 2023, avec des mod\u00e8les acoustiques calibr\u00e9s \u00e0 partir de donn\u00e9es recueillies au large de la Corse. Les r\u00e9sultats ont \u00e9t\u00e9 compar\u00e9s aux zones de pr\u00e9sence potentielle de quatre esp\u00e8ces prioritaires : rorqual commun, cachalot, ziphius de Cuvier et grand dauphin.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">L\u2019\u00e9tude r\u00e9v\u00e8le que le <\/span><b>bruit anthropique<\/b><span style=\"font-weight: 400;\">, notamment en \u00e9t\u00e9, <\/span><b>d\u00e9passe fr\u00e9quemment les niveaux naturels dans de vastes zones du Sanctuaire<\/b><span style=\"font-weight: 400;\">. Dans des conditions moyennes (percentile P50%), les niveaux de bruit g\u00e9n\u00e9r\u00e9s par le trafic maritime sont sup\u00e9rieurs de 5 \u00e0 10 dB au bruit naturel, avec des pics sup\u00e9rieurs \u00e0 20 dB sur les routes les plus fr\u00e9quent\u00e9es. Ces exc\u00e8s peuvent fortement alt\u00e9rer la communication et l\u2019orientation acoustique des c\u00e9tac\u00e9s, provoquant des effets de masquage nuisibles \u00e0 des comportements vitaux comme la socialisation ou la chasse.<\/span><\/p>\n<p><img decoding=\"async\" class=\"lazyload  wp-image-12654 aligncenter\" src=\"https:\/\/pelagos-sanctuary.org\/wp-content\/uploads\/2025\/07\/Pelagos_CST17_Final_report_Call2-1_page-0002-212x300.jpg\" data-orig-src=\"https:\/\/pelagos-sanctuary.org\/wp-content\/uploads\/2025\/07\/Pelagos_CST17_Final_report_Call2-1_page-0002-212x300.jpg\" alt=\"\" width=\"695\" height=\"983\" srcset=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%27%20width%3D%27695%27%20height%3D%27983%27%20viewBox%3D%270%200%20695%20983%27%3E%3Crect%20width%3D%27695%27%20height%3D%27983%27%20fill-opacity%3D%220%22%2F%3E%3C%2Fsvg%3E\" data-srcset=\"https:\/\/pelagos-sanctuary.org\/wp-content\/uploads\/2025\/07\/Pelagos_CST17_Final_report_Call2-1_page-0002-200x283.jpg 200w, https:\/\/pelagos-sanctuary.org\/wp-content\/uploads\/2025\/07\/Pelagos_CST17_Final_report_Call2-1_page-0002-212x300.jpg 212w, https:\/\/pelagos-sanctuary.org\/wp-content\/uploads\/2025\/07\/Pelagos_CST17_Final_report_Call2-1_page-0002-400x566.jpg 400w, https:\/\/pelagos-sanctuary.org\/wp-content\/uploads\/2025\/07\/Pelagos_CST17_Final_report_Call2-1_page-0002-600x849.jpg 600w, https:\/\/pelagos-sanctuary.org\/wp-content\/uploads\/2025\/07\/Pelagos_CST17_Final_report_Call2-1_page-0002-724x1024.jpg 724w, https:\/\/pelagos-sanctuary.org\/wp-content\/uploads\/2025\/07\/Pelagos_CST17_Final_report_Call2-1_page-0002-768x1087.jpg 768w, https:\/\/pelagos-sanctuary.org\/wp-content\/uploads\/2025\/07\/Pelagos_CST17_Final_report_Call2-1_page-0002-800x1132.jpg 800w, https:\/\/pelagos-sanctuary.org\/wp-content\/uploads\/2025\/07\/Pelagos_CST17_Final_report_Call2-1_page-0002-1085x1536.jpg 1085w, https:\/\/pelagos-sanctuary.org\/wp-content\/uploads\/2025\/07\/Pelagos_CST17_Final_report_Call2-1_page-0002-1200x1698.jpg 1200w, https:\/\/pelagos-sanctuary.org\/wp-content\/uploads\/2025\/07\/Pelagos_CST17_Final_report_Call2-1_page-0002.jpg 1240w\" data-sizes=\"auto\" data-orig-sizes=\"(max-width: 695px) 100vw, 695px\" \/><\/p>\n<p><span style=\"font-weight: 400;\">En termes de risque de collision, les mod\u00e8les pr\u00e9dictifs montrent que les navires <\/span><b>Ro-Ro<\/b><span style=\"font-weight: 400;\"> (Roll-on\/Roll-off, con\u00e7us pour transporter des v\u00e9hicules) repr\u00e9sentent la cat\u00e9gorie la plus dangereuse. En 2023, ces navires ont parcouru environ quatre fois plus de distance \u00e0 grande vitesse (&gt;15 n\u0153uds) que les bateaux de plaisance. Les zones les plus \u00e0 risque se situent au centre et au nord du Sanctuaire, l\u00e0 o\u00f9 les routes commerciales \u00e0 grande vitesse croisent des habitats critiques pour les rorquals communs et les cachalots \u2014 de grands c\u00e9tac\u00e9s particuli\u00e8rement vuln\u00e9rables aux collisions avec les grands navires.<\/span><\/p>\n<p><img decoding=\"async\" class=\"lazyload alignnone  wp-image-12657 aligncenter\" src=\"https:\/\/pelagos-sanctuary.org\/wp-content\/uploads\/2025\/07\/Pelagos_CST17_Final_report_Call2-1_page-0001-300x212.jpg\" data-orig-src=\"https:\/\/pelagos-sanctuary.org\/wp-content\/uploads\/2025\/07\/Pelagos_CST17_Final_report_Call2-1_page-0001-300x212.jpg\" alt=\"\" width=\"675\" height=\"477\" srcset=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%27%20width%3D%27675%27%20height%3D%27477%27%20viewBox%3D%270%200%20675%20477%27%3E%3Crect%20width%3D%27675%27%20height%3D%27477%27%20fill-opacity%3D%220%22%2F%3E%3C%2Fsvg%3E\" data-srcset=\"https:\/\/pelagos-sanctuary.org\/wp-content\/uploads\/2025\/07\/Pelagos_CST17_Final_report_Call2-1_page-0001-200x141.jpg 200w, https:\/\/pelagos-sanctuary.org\/wp-content\/uploads\/2025\/07\/Pelagos_CST17_Final_report_Call2-1_page-0001-300x212.jpg 300w, https:\/\/pelagos-sanctuary.org\/wp-content\/uploads\/2025\/07\/Pelagos_CST17_Final_report_Call2-1_page-0001-400x283.jpg 400w, https:\/\/pelagos-sanctuary.org\/wp-content\/uploads\/2025\/07\/Pelagos_CST17_Final_report_Call2-1_page-0001-600x424.jpg 600w, https:\/\/pelagos-sanctuary.org\/wp-content\/uploads\/2025\/07\/Pelagos_CST17_Final_report_Call2-1_page-0001-768x543.jpg 768w, https:\/\/pelagos-sanctuary.org\/wp-content\/uploads\/2025\/07\/Pelagos_CST17_Final_report_Call2-1_page-0001-800x566.jpg 800w, https:\/\/pelagos-sanctuary.org\/wp-content\/uploads\/2025\/07\/Pelagos_CST17_Final_report_Call2-1_page-0001-1024x724.jpg 1024w, https:\/\/pelagos-sanctuary.org\/wp-content\/uploads\/2025\/07\/Pelagos_CST17_Final_report_Call2-1_page-0001-1200x849.jpg 1200w, https:\/\/pelagos-sanctuary.org\/wp-content\/uploads\/2025\/07\/Pelagos_CST17_Final_report_Call2-1_page-0001-1536x1086.jpg 1536w, https:\/\/pelagos-sanctuary.org\/wp-content\/uploads\/2025\/07\/Pelagos_CST17_Final_report_Call2-1_page-0001.jpg 1755w\" data-sizes=\"auto\" data-orig-sizes=\"(max-width: 675px) 100vw, 675px\" \/><\/p>\n<p><span style=\"font-weight: 400;\">L\u2019\u00e9tude a \u00e9galement confirm\u00e9 une forte <\/span><b>saisonnalit\u00e9 des impacts<\/b><span style=\"font-weight: 400;\">: tandis que le trafic commercial reste assez stable, la plaisance augmente consid\u00e9rablement durant l\u2019\u00e9t\u00e9, contribuant de mani\u00e8re significative \u00e0 la pollution sonore saisonni\u00e8re.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Il convient de souligner que l\u2019\u00e9tude repose principalement sur les donn\u00e9es AIS, un syst\u00e8me obligatoire pour les navires commerciaux de grande taille, mais <\/span><b>non pour l\u2019ensemble des embarcations de p\u00eache ou de plaisance<\/b><span style=\"font-weight: 400;\">. Une partie du trafic, notamment celui des petites embarcations de loisir, pourrait donc <\/span><b>ne pas \u00eatre enti\u00e8rement repr\u00e9sent\u00e9e<\/b><span style=\"font-weight: 400;\">. Cependant, entre 2019 et 2023, on observe une nette augmentation du nombre de bateaux de plaisance d\u00e9tect\u00e9s, due en partie \u00e0 une adoption plus large de l\u2019AIS chez les particuliers. Ce progr\u00e8s technologique am\u00e9liore la couverture des donn\u00e9es, mais des lacunes persistent, pouvant conduire \u00e0 une sous-estimation de l\u2019impact cumul\u00e9 du petit trafic, surtout en \u00e9t\u00e9.<\/span><\/p>\n<h2>&nbsp;<\/h2>\n<h2>Un engagement pour la connaissance<\/h2>\n<p><span style=\"font-weight: 400;\">Ce projet constitue une avanc\u00e9e concr\u00e8te pour combler les lacunes scientifiques li\u00e9es au bruit sous-marin \u2014 reconnu \u00e0 l\u2019\u00e9chelle internationale comme une menace pour les c\u00e9tac\u00e9s \u2014 en accord avec les recommandations de l\u2019OMI et la Directive-Cadre Strat\u00e9gie pour le Milieu Marin de l\u2019UE. Les donn\u00e9es recueillies seront essentielles pour guider les actions de r\u00e9duction du bruit, adapter les strat\u00e9gies de gestion et renforcer la coop\u00e9ration scientifique entre \u00c9tats.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Avec cette \u00e9tude, l\u2019Accord Pelagos d\u00e9montre que prot\u00e9ger la biodiversit\u00e9, c\u2019est aussi prot\u00e9ger le silence. Investir dans des outils scientifiques de suivi, c\u2019est se doter d\u2019une base solide pour relever les d\u00e9fis \u00e0 venir dans une M\u00e9diterran\u00e9e o\u00f9 le trafic maritime ne cesse de cro\u00eetre.<\/span><\/p>\n<p>&nbsp;<\/p>\n<\/div><div class=\"fusion-separator fusion-full-width-sep\" style=\"align-self: center;margin-left: auto;margin-right: auto;margin-top:5px;width:100%;\"><\/div><\/div><\/div><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-5 fusion_builder_column_1_6 1_6 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:16.666666666667%;--awb-margin-top-large:0px;--awb-spacing-right-large:11.52%;--awb-margin-bottom-large:20px;--awb-spacing-left-large:11.52%;--awb-width-medium:100%;--awb-order-medium:0;--awb-spacing-right-medium:1.92%;--awb-spacing-left-medium:1.92%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\"><div class=\"fusion-column-wrapper 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\nL\u2019Accord Pelagos poursuit son engagement pour la protection de l\u2019\u00e9cosyst\u00e8me marin du Sanctuaire : un projet a\" data-link=\"https:\/\/pelagos-sanctuary.org\/fr\/un-ocean-plus-silencieux-pour-le-sanctuaire-pelagos-etude-sur-le-trafic-maritime-et-le-bruit-sous-marin\/\"><h4 class=\"tagline\" style=\"color:hsla(var(--awb-color3-h),var(--awb-color3-s),calc( var(--awb-color3-l) - 78% ),var(--awb-color3-a));\">Codividi questo post<\/h4><div class=\"fusion-social-networks sharingbox-shortcode-icon-wrapper sharingbox-shortcode-icon-wrapper-1 boxed-icons\"><span><a href=\"https:\/\/www.facebook.com\/sharer.php?u=https%3A%2F%2Fpelagos-sanctuary.org%2Ffr%2Fun-ocean-plus-silencieux-pour-le-sanctuaire-pelagos-etude-sur-le-trafic-maritime-et-le-bruit-sous-marin%2F&amp;t=Un%20oc%C3%A9an%20plus%20silencieux%20pour%20le%20Sanctuaire%20Pelagos%3A%20%C3%A9tude%20sur%20le%20trafic%20maritime%20et%20le%20bruit%20sous-marin\" target=\"_blank\" rel=\"noreferrer\" title=\"Facebook\" 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class=\"fusion-builder-row fusion-row fusion-flex-align-items-flex-start fusion-flex-content-wrap\" style=\"max-width:1216.8px;margin-left: calc(-4% \/ 2 );margin-right: calc(-4% \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-10 fusion_builder_column_1_1 1_1 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:100%;--awb-margin-top-large:0px;--awb-spacing-right-large:1.92%;--awb-margin-bottom-large:0px;--awb-spacing-left-large:1.92%;--awb-width-medium:100%;--awb-spacing-right-medium:1.92%;--awb-spacing-left-medium:1.92%;--awb-width-small:100%;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\"><div class=\"fusion-column-wrapper fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-text fusion-text-4\"><\/div><\/div><\/div><\/div><\/div><\/p>","protected":false},"excerpt":{"rendered":"<p>Plus de 60 millions de points de donn\u00e9es AIS de 2019 \u00e0 2023 analys\u00e9s pour le rorqual commun, le cachalot, la baleine \u00e0 bec de Cuvier et le grand dauphin.<\/p>\n","protected":false},"author":11,"featured_media":12668,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"chat","meta":[],"categories":[57],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.7 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Un oc\u00e9an plus silencieux pour le Sanctuaire Pelagos: \u00e9tude sur le trafic maritime et le bruit sous-marin - Pelagos Sanctuary<\/title>\n<meta name=\"description\" content=\"Un projet a \u00e9t\u00e9 men\u00e9 pour \u00e9valuer la distribution du trafic maritime et du bruit sous-marin d\u2019origine anthropique, afin d\u2019analyser l\u2019un des impacts les plus insidieux mais les moins visibles pour la faune marine.\" \/>\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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