{"id":1906,"date":"2020-11-23T13:52:29","date_gmt":"2020-11-23T13:52:29","guid":{"rendered":"http:\/\/iccinet.org\/?p=1906"},"modified":"2022-07-12T15:22:40","modified_gmt":"2022-07-12T15:22:40","slug":"possible-1000-km-river-channel-may-drain-greenlands-northern-ice-sheet-more-rapidly","status":"publish","type":"post","link":"https:\/\/iccinet.org\/zh\/possible-1000-km-river-channel-may-drain-greenlands-northern-ice-sheet-more-rapidly\/","title":{"rendered":"Possible 1000-km \u201cRiver\u201d Channel May Drain Greenland\u2019s Northern Ice Sheet More Rapidly"},"content":{"rendered":"<div><strong>The Cryosphere, November 12<\/strong>\n<\/div>\n<div>Perhaps related to the above, a 1000-kilometer channel under the Petermann Glacier in northern Greenland may provide more rapid run-off from the ice sheet than previously appreciated.\u00a0 Researchers realized that current maps of the bedrock under this portion of the ice sheet showed this channel as \u201cblocked\u201d at key points: due not to measured changes in bedrock height, but lack of data on the actual topography.\u00a0 When they instead used ice model simulations to map this valley, it created a free-flowing downhill \u201criver\u201d watercourse over 1000 km long under the ice. \u00a0If this new mapping is more accurate, such a sloping channel could serve to increase discharge and sea-level rise from this portion of Greenland more rapidly than projected.<\/p>\n<p><a href=\"https:\/\/tc.copernicus.org\/articles\/14\/3747\/2020\/\">https:\/\/tc.copernicus.org\/articles\/14\/3747\/2020\/<\/a><\/div>\n<div><\/div>\n<div>\u827e\u7c73\u00b7\u5370\u7b2c\u514b\u6574\u7406\u3002.<\/div>","protected":false},"excerpt":{"rendered":"<p>The Cryosphere, November 12 Perhaps related to the above, a 1000-kilometer channel under the Petermann Glacier in northern Greenland may provide more rapid run-off from the ice sheet than previously appreciated.\u00a0 Researchers realized that current maps of the bedrock under this portion of the ice sheet showed this channel as \u201cblocked\u201d at key points: due [&#8230;]\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_lmt_disableupdate":"","_lmt_disable":"","footnotes":""},"categories":[152,9],"tags":[],"class_list":["post-1906","post","type-post","status-publish","format-standard","hentry","category-cryosphere-capsules","category-latest-research"],"modified_by":"Pam Pearson","_links":{"self":[{"href":"https:\/\/iccinet.org\/zh\/wp-json\/wp\/v2\/posts\/1906","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/iccinet.org\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/iccinet.org\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/iccinet.org\/zh\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/iccinet.org\/zh\/wp-json\/wp\/v2\/comments?post=1906"}],"version-history":[{"count":1,"href":"https:\/\/iccinet.org\/zh\/wp-json\/wp\/v2\/posts\/1906\/revisions"}],"predecessor-version":[{"id":1907,"href":"https:\/\/iccinet.org\/zh\/wp-json\/wp\/v2\/posts\/1906\/revisions\/1907"}],"wp:attachment":[{"href":"https:\/\/iccinet.org\/zh\/wp-json\/wp\/v2\/media?parent=1906"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/iccinet.org\/zh\/wp-json\/wp\/v2\/categories?post=1906"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/iccinet.org\/zh\/wp-json\/wp\/v2\/tags?post=1906"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}