{"id":7862,"date":"2022-06-13T14:15:27","date_gmt":"2022-06-13T12:15:27","guid":{"rendered":"https:\/\/site.uit.no\/cage\/?p=7862"},"modified":"2023-04-04T10:28:57","modified_gmt":"2023-04-04T08:28:57","slug":"stressed-seeps-under-pressure","status":"publish","type":"post","link":"https:\/\/site.uit.no\/cage\/2022\/06\/13\/stressed-seeps-under-pressure\/","title":{"rendered":"Stressed seeps under pressure"},"content":{"rendered":"<h6>Text: B\u00e9n\u00e9dicte Ferr\u00e9<\/h6>\n<p>One of our operations was to deploy two piezometers in order to monitor the pore pressure within the sediment near the seeps, an operation lead by Thibaut Barreyre at UiB. We used a huge 4-tons rig to deploy this thin 3-m long equipment. The operation requires the ROV to detach the weights from the rig that releases the piezometer onto the sediment, and once the rig is lifted back up from the ship, the ROV installs the datalogger that will keep collecting data for 511 days. The data will then be analyzed and used to unravel the subseafloor permeability, to ultimately constrain how much methane is released from the seabed to the overlying ocean.<\/p>\n<p>And sometimes sciences means improvising, here is how we clean dirty piezometers at a 250m deep site\u2026 and it worked!<\/p>\n<p><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"551\" class=\"aligncenter size-large wp-image-7857\" src=\"https:\/\/site.uit.no\/cage\/wp-content\/uploads\/2022\/06\/picture2-1024x551.jpg\" alt=\"\" srcset=\"https:\/\/site.uit.no\/cage\/wp-content\/uploads\/sites\/492\/2022\/06\/picture2-1024x551.jpg 1024w, https:\/\/site.uit.no\/cage\/wp-content\/uploads\/sites\/492\/2022\/06\/picture2-300x161.jpg 300w, https:\/\/site.uit.no\/cage\/wp-content\/uploads\/sites\/492\/2022\/06\/picture2-768x413.jpg 768w, https:\/\/site.uit.no\/cage\/wp-content\/uploads\/sites\/492\/2022\/06\/picture2.jpg 1132w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/p>\n<p style=\"text-align: center;\"><em>Rig used to deploy the piezometers.<\/em><\/p>\n<p><img decoding=\"async\" width=\"1024\" height=\"553\" class=\"aligncenter size-large wp-image-7864 lazyload\" data-src=\"https:\/\/site.uit.no\/cage\/wp-content\/uploads\/2022\/06\/picture3-1024x553.jpg\" alt=\"\" data-srcset=\"https:\/\/site.uit.no\/cage\/wp-content\/uploads\/sites\/492\/2022\/06\/picture3-1024x553.jpg 1024w, https:\/\/site.uit.no\/cage\/wp-content\/uploads\/sites\/492\/2022\/06\/picture3-300x162.jpg 300w, https:\/\/site.uit.no\/cage\/wp-content\/uploads\/sites\/492\/2022\/06\/picture3-768x415.jpg 768w, https:\/\/site.uit.no\/cage\/wp-content\/uploads\/sites\/492\/2022\/06\/picture3.jpg 1127w\" data-sizes=\"(max-width: 1024px) 100vw, 1024px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 1024px; --smush-placeholder-aspect-ratio: 1024\/553;\" \/><\/p>\n<p style=\"text-align: center;\"><em>The ROV releases the weights so the standpipe penetrates the sediment.<\/em><\/p>\n<p><img decoding=\"async\" width=\"1024\" height=\"551\" class=\"aligncenter size-large wp-image-7865 lazyload\" data-src=\"https:\/\/site.uit.no\/cage\/wp-content\/uploads\/2022\/06\/picture4-1024x551.jpg\" alt=\"\" data-srcset=\"https:\/\/site.uit.no\/cage\/wp-content\/uploads\/sites\/492\/2022\/06\/picture4-1024x551.jpg 1024w, https:\/\/site.uit.no\/cage\/wp-content\/uploads\/sites\/492\/2022\/06\/picture4-300x162.jpg 300w, https:\/\/site.uit.no\/cage\/wp-content\/uploads\/sites\/492\/2022\/06\/picture4-768x414.jpg 768w, https:\/\/site.uit.no\/cage\/wp-content\/uploads\/sites\/492\/2022\/06\/picture4.jpg 1131w\" data-sizes=\"(max-width: 1024px) 100vw, 1024px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 1024px; --smush-placeholder-aspect-ratio: 1024\/551;\" \/><\/p>\n<p style=\"text-align: center;\"><em>The ROV has installed the datalogger on the standpipe.<\/em><\/p>\n<p style=\"text-align: center;\"><img decoding=\"async\" width=\"1024\" height=\"552\" class=\"aligncenter size-large wp-image-7866 lazyload\" data-src=\"https:\/\/site.uit.no\/cage\/wp-content\/uploads\/2022\/06\/picture5-1024x552.jpg\" alt=\"\" data-srcset=\"https:\/\/site.uit.no\/cage\/wp-content\/uploads\/sites\/492\/2022\/06\/picture5-1024x552.jpg 1024w, https:\/\/site.uit.no\/cage\/wp-content\/uploads\/sites\/492\/2022\/06\/picture5-300x162.jpg 300w, https:\/\/site.uit.no\/cage\/wp-content\/uploads\/sites\/492\/2022\/06\/picture5-768x414.jpg 768w, https:\/\/site.uit.no\/cage\/wp-content\/uploads\/sites\/492\/2022\/06\/picture5.jpg 1129w\" data-sizes=\"(max-width: 1024px) 100vw, 1024px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 1024px; --smush-placeholder-aspect-ratio: 1024\/552;\" \/><\/p>\n<p style=\"text-align: center;\"><em>This is not rocket science, but it does the job.<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Text: B\u00e9n\u00e9dicte Ferr\u00e9 One of our operations was to deploy two piezometers in order to &hellip; <\/p>\n<p class=\"read-more-link\"><a href=\"https:\/\/site.uit.no\/cage\/2022\/06\/13\/stressed-seeps-under-pressure\/\">Read more<span class=\"screen-reader-text\"> \u00abStressed seeps under pressure\u00bb<\/span><\/a><\/p>\n","protected":false},"author":123546,"featured_media":7865,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[148],"tags":[],"class_list":["post-7862","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-eman7-22-3"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - 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