{"id":217228,"date":"2025-07-05T02:10:03","date_gmt":"2025-07-05T07:10:03","guid":{"rendered":"https:\/\/lifeboat.com\/blog\/2025\/07\/frozen-but-not-sealed-arctic-ocean-remained-open-to-life-during-ice-ages-study-suggests"},"modified":"2025-07-05T02:10:03","modified_gmt":"2025-07-05T07:10:03","slug":"frozen-but-not-sealed-arctic-ocean-remained-open-to-life-during-ice-ages-study-suggests","status":"publish","type":"post","link":"https:\/\/lifeboat.com\/blog\/2025\/07\/frozen-but-not-sealed-arctic-ocean-remained-open-to-life-during-ice-ages-study-suggests","title":{"rendered":"Frozen, but not sealed: Arctic Ocean remained open to life during ice ages, study suggests"},"content":{"rendered":"<p><a class=\"aligncenter blog-photo\" href=\"https:\/\/lifeboat.com\/blog.images\/frozen-but-not-sealed-arctic-ocean-remained-open-to-life-during-ice-ages-study-suggests.jpg\"><\/a><\/p>\n<p>For years, scientists have debated whether a giant thick ice shelf once covered the entire Arctic Ocean during the coldest ice ages. Now, a new study <a href=\"https:\/\/www.science.org\/doi\/10.1126\/sciadv.adu7681\" target=\"_blank\">published<\/a> in <i>Science Advances<\/i> challenges this idea as the research team found no evidence for the presence of a massive ~1km ice shelf. Instead, the Arctic Ocean appears to have been covered by seasonal sea ice\u2014leaving open water and life-sustaining conditions even during the harshest periods of cold periods during the last 750,000 years.<\/p>\n<p>The paper is titled \u201cSeasonal sea ice characterized the glacial Arctic\u2013Atlantic gateway over the past 750,000 years.\u201d<\/p>\n<p>This discovery gives insights crucial for our understanding of how the Arctic has responded to <a href=\"https:\/\/phys.org\/tags\/climate+change\/\" rel=\"tag\" class=\"\">climate change<\/a> in the past\u2014and how it might behave in the future.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>For years, scientists have debated whether a giant thick ice shelf once covered the entire Arctic Ocean during the coldest ice ages. Now, a new study published in Science Advances challenges this idea as the research team found no evidence for the presence of a massive ~1km ice shelf. Instead, the Arctic Ocean appears to [\u2026]<\/p>\n","protected":false},"author":662,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[493,17],"tags":[],"class_list":["post-217228","post","type-post","status-publish","format-standard","hentry","category-climatology","category-sustainability"],"_links":{"self":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/217228","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/users\/662"}],"replies":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/comments?post=217228"}],"version-history":[{"count":0,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/217228\/revisions"}],"wp:attachment":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/media?parent=217228"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/categories?post=217228"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/tags?post=217228"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}