Checking out the releasers (metallic tube at the top of the second picture).<\/span><\/p>\n V\u00e9rification du fonctionnement des largueurs (tube m\u00e9tallique en haut sur la photo de droite).<\/span><\/p>\n Building up the anchors for the OBS stations<\/span><\/p>\n Construction des ancres des OBS<\/span><\/p>\n Flash lights are important on OBS stations especially during night operations since thew allow us to locate them easily and catch them back (therefore, collect the data). But the releasers are even much more important. Indeed, attached to the OBS the releaser is itself connected to the anchor of the OBS station. Thus, in order to get the data back the OBS has to be detached from its anchor. Hence the important role of the releaser!<\/p>\n Up to now, we have tested the releasers in the lab and everything was working properly. But to be sure that the releasers will open during the experiments we also tested them in the water at a depth of 1 000 m and everything went well! We finished this operation at 1 o\u2019clock in the morning! Then, it was time for us all to go to bed!<\/p>\n Les flashs sont importants sur les stations OBS notamment lorsque les op\u00e9rations de r\u00e9cup\u00e9ration se d\u00e9roulent de nuit. Cela nous permet de les localiser plus facilement et rapidement, et de les remonter \u00e0 bord afin d’analyser les donn\u00e9es enregistr\u00e9es. Mais les largueurs sont d’autant plus important puisque ces derniers sont le lien entre l’ancre des OBS et les OBS eux-m\u00eames. Si ces derniers ne fonctionnent pas, les stations resteront sur le fond marin et aucune donn\u00e9e ne sera r\u00e9cup\u00e9r\u00e9e. <\/em> Jusqu’ici, nous avons test\u00e9 les largueurs dans le laboratoire et chacun d’entre eux fonctionnait parfaitement (bonne nouvelle !) Mais pour \u00eatre s\u00fbr que ces derniers s’ouvriront \u00e0 la fin de l’acquisition des donn\u00e9es, nous les avons \u00e9galement test\u00e9s \u00e0 1 000 m de profondeur. Et tout fonctionnait parfaitement ! Une op\u00e9ration que nous avons termin\u00e9 \u00e0 1h du matin ! Il \u00e9tait temps pour nous d\u2019aller nous coucher !<\/em><\/p>\n Releasers ready to be tested into the sea at 1 000 m depth.<\/span><\/p>\n Largueurs pr\u00eats \u00e0 \u00eatre test\u00e9s dans l\u2019eau \u00e0 1 000 m de profondeur.<\/span><\/p>\n At the same time, Gero, Wu-Chen, Christian and Sudipta were preparing the streamer and the airgun for the acquisition of the 2D data the next day.<\/p>\n En parall\u00e8le, Gero, Wu-Chen, Christian et Sudipta pr\u00e9paraient la fl\u00fbte sismique et l\u2019airgun pour l\u2019acquisition des donn\u00e9es sismiques 2D le lendemain matin.<\/em><\/p>\n Streamer (left) and airgun (right) deployed for the acquisition of the 2D seismic data.<\/span><\/p>\n D\u00e9ploiement de la fl\u00fbte (gauche) et de la source (airgun, droite) pour l\u2019acquisition des donn\u00e9es sismiques 2D.<\/span><\/p>\n I\u2019m realizing that there is a lot of words that I\u2019m using now that are specific to the acquisition of seismic data. I will do a post tomorrow to explain you the meaning of each one. Don\u2019t hesistate to ask me questions, I will be happy to answer you anytime.<\/p>\n Je viens de me rendre compte que plusieurs des termes que j\u2019emploie sont sp\u00e9cifiques \u00e0 l\u2019acquisition des donn\u00e9es sismiques. J\u2019\u00e9crirai un nouveau post demain pour vous expliquer la signification de chacun. Mais d\u2019ici l\u00e0, n\u2019h\u00e9sitez pas \u00e0 me poser des questions je serai ravie d\u2019 y r\u00e9pondre.<\/em><\/p>\n","protected":false},"excerpt":{"rendered":" We left the harbor today after lunch and continued to set up the equipment. We checked that the flash lights and the releasers of the OBS stations were working properly, and built up the anchors where the OBS will stand; \u00a0the later ones allowing the OBS to sink and stay on the seafloor. Nous avons […]<\/p>\n","protected":false},"author":100,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-120","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/www.oceanblogs.org\/being-a-young-marine-scientist\/wp-json\/wp\/v2\/posts\/120","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.oceanblogs.org\/being-a-young-marine-scientist\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.oceanblogs.org\/being-a-young-marine-scientist\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.oceanblogs.org\/being-a-young-marine-scientist\/wp-json\/wp\/v2\/users\/100"}],"replies":[{"embeddable":true,"href":"https:\/\/www.oceanblogs.org\/being-a-young-marine-scientist\/wp-json\/wp\/v2\/comments?post=120"}],"version-history":[{"count":12,"href":"https:\/\/www.oceanblogs.org\/being-a-young-marine-scientist\/wp-json\/wp\/v2\/posts\/120\/revisions"}],"predecessor-version":[{"id":263,"href":"https:\/\/www.oceanblogs.org\/being-a-young-marine-scientist\/wp-json\/wp\/v2\/posts\/120\/revisions\/263"}],"wp:attachment":[{"href":"https:\/\/www.oceanblogs.org\/being-a-young-marine-scientist\/wp-json\/wp\/v2\/media?parent=120"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.oceanblogs.org\/being-a-young-marine-scientist\/wp-json\/wp\/v2\/categories?post=120"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.oceanblogs.org\/being-a-young-marine-scientist\/wp-json\/wp\/v2\/tags?post=120"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}![\"Jens-releaser\"](\"http:\/\/www.oceanblogs.org\/being-a-young-marine-scientist\/wp-content\/uploads\/sites\/27\/2014\/09\/Jens-releaser.jpg\")
<\/a><\/em> <\/a><\/em><\/p>\n<\/a> <\/a><\/p>\n<\/a> <\/a><\/em><\/p>\n<\/a>\u00a0<\/a><\/p>\n