{"id":941,"date":"2017-06-25T09:50:55","date_gmt":"2017-06-25T07:50:55","guid":{"rendered":"https:\/\/sargasses.mio.osupytheas.fr\/?p=941"},"modified":"2017-06-26T13:43:29","modified_gmt":"2017-06-26T11:43:29","slug":"jour-7-les-nuages-narreteront-pas-la-mission","status":"publish","type":"post","link":"https:\/\/sargasses.mio.osupytheas.fr\/?p=941","title":{"rendered":"[JOUR 6] &#8211; Les nuages n\u2019arr\u00eateront pas la mission !"},"content":{"rendered":"<p><span style=\"font-weight: 400;\">Ce weekend, le ciel n\u2019\u00e9tait pas avec nous. La navigation matinale s\u2019\u00e9tait pourtant bien d\u00e9roul\u00e9e. Plusieurs nappes rep\u00e9r\u00e9es la veille par satellite avaient \u00e9t\u00e9 suivies par l\u2019\u00e9quipage. Ce sont les \u201ccellules de Langmuir\u201d, des courants tourbillonnaires induits par les vents, qui ont permi la concentration d\u2019algues par petits paquets \u00e0 la surface de l\u2019eau. Les pr\u00e9l\u00e8vements \u00e9taient donc plut\u00f4ts faciles. <\/span><\/p>\n<style type=\"text\/css\">\n#foogallery-gallery-940 .fg-image { width: 300px; }\n#foogallery-gallery-940 { --fg-gutter: 10px; }<\/style>\n\t\t\t<div class=\"foogallery foogallery-container foogallery-default foogallery-lightbox-foobox-free fg-center fg-default fg-ready fg-light fg-loading-default fg-loaded-fade-in fg-hover-fade fg-hover-eye\" id=\"foogallery-gallery-940\" data-foogallery=\"{&quot;item&quot;:{&quot;showCaptionTitle&quot;:true,&quot;showCaptionDescription&quot;:false},&quot;lazy&quot;:true}\" style=\"--fg-title-line-clamp: 0; --fg-description-line-clamp: 0;\" >\n\t<div class=\"fg-item fg-type-image fg-idle\"><figure class=\"fg-item-inner\"><a href=\"https:\/\/sargasses.mio.osupytheas.fr\/wp-content\/uploads\/2017\/06\/plage-arri\u00e8re-table-de-tri-un-biologiste-recherche-la-faune-associ\u00e9e-aux-sargasses.jpg\" data-caption-title=\"Des esp\u00e8ces inf\u00e9od\u00e9s aux Sargasses ?\" data-caption-desc=\"Sur la table de tri un biologiste recherche la faune associ\u00e9e aux Sargasses.\n\u00a9 Hubert BATAILLE\" data-attachment-id=\"918\" data-type=\"image\" class=\"fg-thumb\"><span class=\"fg-image-wrap\"><img fetchpriority=\"high\" decoding=\"async\" title=\"Des esp\u00e8ces inf\u00e9od\u00e9s aux Sargasses ?\" width=\"300\" height=\"200\" class=\"skip-lazy fg-image\" data-src-fg=\"https:\/\/sargasses.mio.osupytheas.fr\/wp-content\/uploads\/cache\/2017\/06\/plage-arri\u00e8re-table-de-tri-un-biologiste-recherche-la-faune-associ\u00e9e-aux-sargasses\/1063089652.jpg\" src=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%22300%22%20height%3D%22200%22%20viewBox%3D%220%200%20300%20200%22%3E%3C%2Fsvg%3E\" loading=\"eager\"><\/span><span class=\"fg-image-overlay\"><\/span><\/a><figcaption class=\"fg-caption\"><div class=\"fg-caption-inner\"><div class=\"fg-caption-title\">Des esp\u00e8ces inf\u00e9od\u00e9s aux Sargasses ?<\/div><\/div><\/figcaption><\/figure><div class=\"fg-loader\"><\/div><\/div><div class=\"fg-item fg-type-image fg-idle\"><figure class=\"fg-item-inner\"><a href=\"https:\/\/sargasses.mio.osupytheas.fr\/wp-content\/uploads\/2017\/06\/combien-desp\u00e8ce-de-sargasses-p\u00e9lagiques-_.jpg\" data-caption-title=\"Diff\u00e9rentes esp\u00e8ces ?\" data-caption-desc=\"Les scientifiques supposent que toutes les 3 sont des esp\u00e8ces diff\u00e9rentes. Les analyses le confirmeront.\n\u00a9 Hubert BATAILLE\" data-attachment-id=\"919\" data-type=\"image\" class=\"fg-thumb\"><span class=\"fg-image-wrap\"><img decoding=\"async\" title=\"Diff\u00e9rentes esp\u00e8ces ?\" width=\"300\" height=\"200\" class=\"skip-lazy fg-image\" data-src-fg=\"https:\/\/sargasses.mio.osupytheas.fr\/wp-content\/uploads\/cache\/2017\/06\/combien-desp\u00e8ce-de-sargasses-p\u00e9lagiques-_\/2371507213.jpg\" src=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%22300%22%20height%3D%22200%22%20viewBox%3D%220%200%20300%20200%22%3E%3C%2Fsvg%3E\" loading=\"eager\"><\/span><span class=\"fg-image-overlay\"><\/span><\/a><figcaption class=\"fg-caption\"><div class=\"fg-caption-inner\"><div class=\"fg-caption-title\">Diff\u00e9rentes esp\u00e8ces ?<\/div><\/div><\/figcaption><\/figure><div class=\"fg-loader\"><\/div><\/div><\/div>\n\n<p><span style=\"font-weight: 400;\">Mais au cours de la journ\u00e9e, en raison d\u2019une importante couverture nuageuse qui a bloqu\u00e9 le rayonnement r\u00e9\u00e9mis par les Sargasses, les images satellites qui devaient guider la mission sont devenues ininterpr\u00e9tables. L\u2019Ant\u00e9a ne savait plus o\u00f9 se diriger pour trouver les fameuses algues\u2026 \u00a0Mais c\u2019\u00e9tait sans compter l\u2019aide pr\u00e9cieuse de Crist\u00e8le CHEVALIER et Leo BERLINE rest\u00e9s \u00e0 Terre, \u00e0 Marseille ! Arm\u00e9s d\u2019un outil de mod\u00e9lisation et de beaucoup de r\u00e9flexion, ils sont capables de calculer la d\u00e9rive des radeaux avec les courants et donc, de pr\u00e9voir leur position en temps r\u00e9el !<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Et cette m\u00e9thode de traque indirecte s\u2019est r\u00e9v\u00e9l\u00e9e tr\u00e8s efficace : arriv\u00e9 aux coordonn\u00e9es indiqu\u00e9es par les calculs, l&#8217;\u00e9quipage a rencontr\u00e9 tellement de Sargasses que la r\u00e9colte a d\u00fb \u00eatre momentan\u00e9ment stopp\u00e9e pour \u00e9viter de surcharger le filet !<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Deux \u00e9quipes se sont alors form\u00e9es sur le bateau :<\/span><\/p>\n<ul>\n<li><span style=\"font-weight: 400;\">d\u2019un c\u00f4t\u00e9, les phycologues ont profit\u00e9 de cette abondance d\u2019algues pour faire des herbiers et des pr\u00e9l\u00e8vements utiles pour la taxonomie ou la g\u00e9n\u00e9tique. Comme nous l\u2019avions observ\u00e9 pr\u00e9c\u00e9demment (article\u00a0<\/span><a href=\"https:\/\/sargasses.mio.osupytheas.fr\/index.php\/2017\/06\/23\/jour-5-sargasses-en-vue\/\"><span style=\"font-weight: 400;\">Jour 5 &#8211; Sargasses en vue<\/span><\/a>\u00a0)<span style=\"font-weight: 400;\">, ces radeaux sont compos\u00e9s de plusieurs esp\u00e8ces de sargasses qu\u2019il faudra d\u00e9terminer plus pr\u00e9cis\u00e9ment pour comprendre leur origine ;<\/span><\/li>\n<li><span style=\"font-weight: 400;\">d\u2019un autre c\u00f4t\u00e9, les biologistes ont \u00e9t\u00e9 heureux de d\u00e9couvrir une grande biodiversit\u00e9 au sein de ces radeaux. Ils y ont en effet trouv\u00e9s des crabes, des crevettes, des poissons et m\u00eame une assez grande larve de type anguille ! Autant d\u2019indices qui aideront \u00e0 mieux cerner le r\u00f4le que jouent les algues pour ces organismes, et inversement.<\/span><\/li>\n<\/ul>\n<style type=\"text\/css\">\n#foogallery-gallery-917 .fg-image { width: 200px; }\n#foogallery-gallery-917 { --fg-gutter: 10px; }<\/style>\n\t\t\t<div class=\"foogallery foogallery-container foogallery-default foogallery-lightbox-foobox-free fg-center fg-default fg-ready fg-light fg-loading-default fg-loaded-fade-in fg-hover-fade fg-hover-eye\" id=\"foogallery-gallery-917\" data-foogallery=\"{&quot;item&quot;:{&quot;showCaptionTitle&quot;:true,&quot;showCaptionDescription&quot;:false},&quot;lazy&quot;:true}\" style=\"--fg-title-line-clamp: 0; --fg-description-line-clamp: 0;\" >\n\t<div class=\"fg-item fg-type-image fg-idle\"><figure class=\"fg-item-inner\"><a href=\"https:\/\/sargasses.mio.osupytheas.fr\/wp-content\/uploads\/2017\/06\/crabes-nageurs-des-sargasses.jpg\" data-caption-title=\"Crabes nageurs des sargasses\" data-caption-desc=\"Les analyses donneront le noms des esp\u00e8ces pr\u00e9sentes.\n\u00a9 Hubert BATAILLE\" data-attachment-id=\"920\" data-type=\"image\" class=\"fg-thumb\"><span class=\"fg-image-wrap\"><img decoding=\"async\" title=\"Crabes nageurs des sargasses\" width=\"200\" height=\"180\" class=\"skip-lazy fg-image\" data-src-fg=\"https:\/\/sargasses.mio.osupytheas.fr\/wp-content\/uploads\/cache\/2017\/06\/crabes-nageurs-des-sargasses\/370298583.jpg\" src=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%22200%22%20height%3D%22180%22%20viewBox%3D%220%200%20200%20180%22%3E%3C%2Fsvg%3E\" loading=\"eager\"><\/span><span class=\"fg-image-overlay\"><\/span><\/a><figcaption class=\"fg-caption\"><div class=\"fg-caption-inner\"><div class=\"fg-caption-title\">Crabes nageurs des sargasses<\/div><\/div><\/figcaption><\/figure><div class=\"fg-loader\"><\/div><\/div><div class=\"fg-item fg-type-image fg-idle\"><figure class=\"fg-item-inner\"><a href=\"https:\/\/sargasses.mio.osupytheas.fr\/wp-content\/uploads\/2017\/06\/faune-associ\u00e9e-poisson-juvenile-de-comete-saumon.jpg\" data-caption-title=\"Com\u00e8te saumon (Elagatis bipinnulata)\" data-caption-desc=\"Un poisson juv\u00e9nile dans les radeaux de Sargasses\n\u00a9 Hubert BATAILLE\" data-attachment-id=\"921\" data-type=\"image\" class=\"fg-thumb\"><span class=\"fg-image-wrap\"><img decoding=\"async\" title=\"Com\u00e8te saumon (Elagatis bipinnulata)\" width=\"200\" height=\"180\" class=\"skip-lazy fg-image\" data-src-fg=\"https:\/\/sargasses.mio.osupytheas.fr\/wp-content\/uploads\/cache\/2017\/06\/faune-associ\u00e9e-poisson-juvenile-de-comete-saumon\/1805023632.jpg\" src=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%22200%22%20height%3D%22180%22%20viewBox%3D%220%200%20200%20180%22%3E%3C%2Fsvg%3E\" loading=\"eager\"><\/span><span class=\"fg-image-overlay\"><\/span><\/a><figcaption class=\"fg-caption\"><div class=\"fg-caption-inner\"><div class=\"fg-caption-title\">Com\u00e8te saumon (Elagatis bipinnulata)<\/div><\/div><\/figcaption><\/figure><div class=\"fg-loader\"><\/div><\/div><div class=\"fg-item fg-type-image fg-idle\"><figure class=\"fg-item-inner\"><a href=\"https:\/\/sargasses.mio.osupytheas.fr\/wp-content\/uploads\/2017\/06\/Larve-leptocephale-danguille-_-.jpg\" data-caption-title=\"Larve leptocephale d&#039;anguille\" data-caption-desc=\"\u00a9 Sandrine RUITTON\" data-attachment-id=\"922\" data-type=\"image\" class=\"fg-thumb\"><span class=\"fg-image-wrap\"><img decoding=\"async\" title=\"Larve leptocephale d&#039;anguille\" width=\"200\" height=\"180\" class=\"skip-lazy fg-image\" data-src-fg=\"https:\/\/sargasses.mio.osupytheas.fr\/wp-content\/uploads\/cache\/2017\/06\/Larve-leptocephale-danguille-_-\/3785457353.jpg\" src=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%22200%22%20height%3D%22180%22%20viewBox%3D%220%200%20200%20180%22%3E%3C%2Fsvg%3E\" loading=\"eager\"><\/span><span class=\"fg-image-overlay\"><\/span><\/a><figcaption class=\"fg-caption\"><div class=\"fg-caption-inner\"><div class=\"fg-caption-title\">Larve leptocephale d'anguille<\/div><\/div><\/figcaption><\/figure><div class=\"fg-loader\"><\/div><\/div><\/div>\n\n<p><span style=\"font-weight: 400;\">Enfin, pendant les ramassages, un grand nombre de particules sombres inconnues pour le moment (une sorte de s\u00e9diment fonc\u00e9) a \u00e9tonn\u00e9 nos scientifiques qui auront le loisir d\u2019approfondir les analyses \u00e0 terre pour en d\u00e9couvrir la composition et peut \u00eatre l\u2019origine ! <\/span><\/p>\n<p><span style=\"font-weight: 400;\">La chasse aux origines des Sargasses n\u2019en n\u2019est qu\u2019\u00e0 ses d\u00e9buts !<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Ce weekend, le ciel n\u2019est pas avec nous. La navigation matinale s\u2019\u00e9tait pourtant bien d\u00e9roul\u00e9e, mais au cours de la journ\u00e9e, une forte couverture nuageuse a rendu les images satellites, les boussoles de l&#8217;Ant\u00e9a, compl\u00e8tement inutilisables&#8230; Comment guider la mission dans ces condition ?<\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[1],"tags":[],"class_list":["post-941","post","type-post","status-publish","format-standard","hentry","category-journal-de-bord"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p9eHwp-fb","_links":{"self":[{"href":"https:\/\/sargasses.mio.osupytheas.fr\/index.php?rest_route=\/wp\/v2\/posts\/941","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sargasses.mio.osupytheas.fr\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sargasses.mio.osupytheas.fr\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sargasses.mio.osupytheas.fr\/index.php?rest_route=\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/sargasses.mio.osupytheas.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=941"}],"version-history":[{"count":8,"href":"https:\/\/sargasses.mio.osupytheas.fr\/index.php?rest_route=\/wp\/v2\/posts\/941\/revisions"}],"predecessor-version":[{"id":962,"href":"https:\/\/sargasses.mio.osupytheas.fr\/index.php?rest_route=\/wp\/v2\/posts\/941\/revisions\/962"}],"wp:attachment":[{"href":"https:\/\/sargasses.mio.osupytheas.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=941"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sargasses.mio.osupytheas.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=941"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sargasses.mio.osupytheas.fr\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=941"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}