{"id":4912,"date":"2020-07-09T13:50:34","date_gmt":"2020-07-09T11:50:34","guid":{"rendered":"https:\/\/site.uit.no\/cage\/?p=4912"},"modified":"2023-04-04T10:29:49","modified_gmt":"2023-04-04T08:29:49","slug":"into-the-heart-of-an-ancient-ice-sheet","status":"publish","type":"post","link":"https:\/\/site.uit.no\/cage\/2020\/07\/09\/into-the-heart-of-an-ancient-ice-sheet\/","title":{"rendered":"Into the heart of an ancient ice sheet"},"content":{"rendered":"<h6><strong>Text: Henry Patton, chief scientist.<\/strong><\/h6>\n<p>During the last ice age a vast, 3-km thick ice sheet covered much of Fennoscandia and the Barents Sea. Yet, around 15,000 years ago, its marine-based sectors collapsed catastrophically within a matter of centuries. One of the primary objectives for our team of 5 scientists and 2 engineers over the next two weeks will be to sail into the central Barents Sea to unlock some of the secrets behind how and why this ancient ice mass rapidly disintegrated.<\/p>\n<p>We left Troms\u00f8 on July 8th on-board the research vessel Helmer Hanssen, leaving behind the calm waters and sunny vistas of Lyngen and northern Troms. Our first study area is \u2018Sentralbanken\u2019, an area that lay at the centre of this Barents Sea ice sheet and where some of its last icy remnants persisted. The transit there is a long one, taking over a day to sail. However, this is not wasted time and there is always plenty to do in preparation, including making sure all the geophysical equipment is working, setting up the instrument room for processing incoming data, and refining our research plans. So far no hitches!<\/p>\n<figure id=\"attachment_4914\" aria-describedby=\"caption-attachment-4914\" style=\"width: 1024px\" class=\"wp-caption aligncenter\"><img fetchpriority=\"high\" decoding=\"async\" class=\"wp-image-4914 size-large\" src=\"https:\/\/site.uit.no\/cage\/wp-content\/uploads\/2020\/08\/arnoya_henry-patton-1024x756.jpg\" alt=\"\" width=\"1024\" height=\"756\" srcset=\"https:\/\/site.uit.no\/cage\/wp-content\/uploads\/sites\/492\/2020\/08\/arnoya_henry-patton-1024x756.jpg 1024w, https:\/\/site.uit.no\/cage\/wp-content\/uploads\/sites\/492\/2020\/08\/arnoya_henry-patton-300x221.jpg 300w, https:\/\/site.uit.no\/cage\/wp-content\/uploads\/sites\/492\/2020\/08\/arnoya_henry-patton-768x567.jpg 768w, https:\/\/site.uit.no\/cage\/wp-content\/uploads\/sites\/492\/2020\/08\/arnoya_henry-patton.jpg 1260w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption id=\"caption-attachment-4914\" class=\"wp-caption-text\">Leaving Arn\u00f8ya behind. Heading for The Barents Sea, Photo: Henry Patton<\/figcaption><\/figure>\n<p>Our route north has also been strategic, taking the opportunity to investigate potential areas of methane seepage from the seafloor, for example, where this ice sheet has eroded the constraining cap rocks; so far our predictions have proved very fruitful, with many newly discovered flaring locations.<\/p>\n<figure id=\"attachment_4915\" aria-describedby=\"caption-attachment-4915\" style=\"width: 986px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" class=\"wp-image-4915 size-full lazyload\" data-src=\"https:\/\/site.uit.no\/cage\/wp-content\/uploads\/2020\/08\/flare-for-blogpost_pavel-serov.jpg\" alt=\"Preliminary data show methane flares where gas is escaping from the seafloor into the ocean.\" width=\"986\" height=\"531\" data-srcset=\"https:\/\/site.uit.no\/cage\/wp-content\/uploads\/sites\/492\/2020\/08\/flare-for-blogpost_pavel-serov.jpg 986w, https:\/\/site.uit.no\/cage\/wp-content\/uploads\/sites\/492\/2020\/08\/flare-for-blogpost_pavel-serov-300x162.jpg 300w, https:\/\/site.uit.no\/cage\/wp-content\/uploads\/sites\/492\/2020\/08\/flare-for-blogpost_pavel-serov-768x414.jpg 768w\" data-sizes=\"(max-width: 986px) 100vw, 986px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 986px; --smush-placeholder-aspect-ratio: 986\/531;\" \/><figcaption id=\"caption-attachment-4915\" class=\"wp-caption-text\">Preliminary data show methane flares where gas is escaping from the seafloor into the ocean.<\/figcaption><\/figure>\n<p>Once we reach Sentralbanken we will begin our plans to survey the glacial fingerprint left behind on the seafloor by the ice sheet, as well as collecting glacial sediments that will help unravel the deglaciation story here, including when the ice retreated and what conditions were like beneath the glacier. We keep our fingers crossed for some calm weather ahead.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Text: Henry Patton, chief scientist. During the last ice age a vast, 3-km thick ice &hellip; <\/p>\n<p class=\"read-more-link\"><a href=\"https:\/\/site.uit.no\/cage\/2020\/07\/09\/into-the-heart-of-an-ancient-ice-sheet\/\">Read more<span class=\"screen-reader-text\"> \u00abInto the heart of an ancient ice sheet\u00bb<\/span><\/a><\/p>\n","protected":false},"author":123546,"featured_media":4913,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[128,120],"tags":[],"class_list":["post-4912","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-central-barents-sea-20-2","category-cruise-blog"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Into the heart of an ancient ice sheet - CAGE, Centre for Arctic Gas Hydrate, Environment and Climate<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/site.uit.no\/cage\/2020\/07\/09\/into-the-heart-of-an-ancient-ice-sheet\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Into the heart of an ancient ice sheet - CAGE, Centre for Arctic Gas Hydrate, Environment and Climate\" \/>\n<meta property=\"og:description\" content=\"Text: Henry Patton, chief scientist. 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