{"id":29401,"date":"2025-02-03T16:33:34","date_gmt":"2025-02-03T14:33:34","guid":{"rendered":"https:\/\/www.imelasavoie.fr\/?p=29401"},"modified":"2025-02-03T16:33:34","modified_gmt":"2025-02-03T14:33:34","slug":"vendee-globe-les-marees","status":"publish","type":"post","link":"https:\/\/www.imelasavoie.fr\/?p=29401","title":{"rendered":"[Vend\u00e9e Globe] Les mar\u00e9es!"},"content":{"rendered":"\n<p>Pour l&rsquo;arriv\u00e9e des premiers bateaux du Vend\u00e9e Globe, nous avons vu que certains devaient attendre plusieurs heures au large apr\u00e8s avoir franchi la ligne d&rsquo;arriv\u00e9e, avant de rentrer dans le chenal des Sables d&rsquo;Olonne qui permet d&rsquo;aller jusqu&rsquo;au port pour se garer (s&rsquo;amarrer).<\/p>\n\n\n\n<p>Nous avons compris que c&rsquo;\u00e9tait \u00e0 cause des mar\u00e9es. A mar\u00e9e basse, il n&rsquo;y a pas assez de hauteur d&rsquo;eau dans le chenal pour permettre aux bateaux de passer. Leur quille (longue barre sous le bateau) s&rsquo;accrocherait dans le sable s&rsquo;ils tentaient de passer!<\/p>\n\n\n\n<p>Nous avons \u00e9tudi\u00e9 ce ph\u00e9nom\u00e8ne des mar\u00e9es. Voici quelques documents qui vous permettront vous aussi de le comprendre.<\/p>\n\n\n\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<iframe loading=\"lazy\" title=\"Comment se forment les mar\u00e9es ? \ud83c\udf0a\" width=\"640\" height=\"360\" src=\"https:\/\/www.youtube.com\/embed\/b40htkjiAoI?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>\n<\/div><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/www.imelasavoie.fr\/wp-content\/uploads\/2025\/02\/image.png\"><img loading=\"lazy\" decoding=\"async\" width=\"475\" height=\"236\" src=\"https:\/\/www.imelasavoie.fr\/wp-content\/uploads\/2025\/02\/image.png\" alt=\"\" class=\"wp-image-29402\" srcset=\"https:\/\/www.imelasavoie.fr\/wp-content\/uploads\/2025\/02\/image.png 475w, https:\/\/www.imelasavoie.fr\/wp-content\/uploads\/2025\/02\/image-300x149.png 300w\" sizes=\"auto, (max-width: 475px) 100vw, 475px\" \/><\/a><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/www.imelasavoie.fr\/wp-content\/uploads\/2025\/02\/image-1.png\"><img loading=\"lazy\" decoding=\"async\" width=\"447\" height=\"147\" src=\"https:\/\/www.imelasavoie.fr\/wp-content\/uploads\/2025\/02\/image-1.png\" alt=\"\" class=\"wp-image-29403\" srcset=\"https:\/\/www.imelasavoie.fr\/wp-content\/uploads\/2025\/02\/image-1.png 447w, https:\/\/www.imelasavoie.fr\/wp-content\/uploads\/2025\/02\/image-1-300x99.png 300w\" sizes=\"auto, (max-width: 447px) 100vw, 447px\" \/><\/a><\/figure>\n\n\n\n<p>Un exemple de calendrier des mar\u00e9es (\u00e0 Lacanau):<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/www.imelasavoie.fr\/wp-content\/uploads\/2025\/02\/image-2.png\"><img loading=\"lazy\" decoding=\"async\" width=\"926\" height=\"1024\" src=\"https:\/\/www.imelasavoie.fr\/wp-content\/uploads\/2025\/02\/image-2-926x1024.png\" alt=\"\" class=\"wp-image-29404\" srcset=\"https:\/\/www.imelasavoie.fr\/wp-content\/uploads\/2025\/02\/image-2-926x1024.png 926w, https:\/\/www.imelasavoie.fr\/wp-content\/uploads\/2025\/02\/image-2-271x300.png 271w, https:\/\/www.imelasavoie.fr\/wp-content\/uploads\/2025\/02\/image-2-768x849.png 768w, https:\/\/www.imelasavoie.fr\/wp-content\/uploads\/2025\/02\/image-2.png 947w\" sizes=\"auto, (max-width: 926px) 100vw, 926px\" \/><\/a><\/figure>\n\n\n\n<p>Pour finir, nous vous proposons un petit exercice.<\/p>\n\n\n\n<p>Je suis en vacances \u00e0 Lacanau le dimanche 9 f\u00e9vrier. Avec ce calendrier des mar\u00e9es de Lacanau, pouvez vous nous dire vers quelle heure je dois sortir si je veux faire de la p\u00eache \u00e0 pieds (marcher et ramasser des coquillages sur le sable \u00e0 mar\u00e9e basse)?<\/p>\n\n\n\n<p>La classe Dinamo 1<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Pour l&rsquo;arriv\u00e9e des premiers bateaux du Vend\u00e9e Globe, nous avons vu que certains devaient attendre plusieurs heures au large apr\u00e8s avoir franchi la ligne d&rsquo;arriv\u00e9e, avant de rentrer dans le chenal des Sables d&rsquo;Olonne qui permet d&rsquo;aller jusqu&rsquo;au port pour &hellip; <a href=\"https:\/\/www.imelasavoie.fr\/?p=29401\">Continuer la lecture <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":13,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-29401","post","type-post","status-publish","format-standard","hentry","category-non-classe"],"_links":{"self":[{"href":"https:\/\/www.imelasavoie.fr\/index.php?rest_route=\/wp\/v2\/posts\/29401","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.imelasavoie.fr\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.imelasavoie.fr\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.imelasavoie.fr\/index.php?rest_route=\/wp\/v2\/users\/13"}],"replies":[{"embeddable":true,"href":"https:\/\/www.imelasavoie.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=29401"}],"version-history":[{"count":1,"href":"https:\/\/www.imelasavoie.fr\/index.php?rest_route=\/wp\/v2\/posts\/29401\/revisions"}],"predecessor-version":[{"id":29405,"href":"https:\/\/www.imelasavoie.fr\/index.php?rest_route=\/wp\/v2\/posts\/29401\/revisions\/29405"}],"wp:attachment":[{"href":"https:\/\/www.imelasavoie.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=29401"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.imelasavoie.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=29401"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.imelasavoie.fr\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=29401"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}