Extending the record of Antarctic ice shelf thickness change, from 1992 to 2017
Extending the record of Antarctic ice shelf thickness change, from 1992 to 2017
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DOI：
10.1016/j.asr.2020.05.030
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发表时间：
2021-06-09
影响因子：
2.6
通讯作者：
McMillan, Malcolm
中科院分区：
文献类型：
--
作者：
Hogg, Anna E.;Gilbert, Lin;McMillan, Malcolm
在过去的二十年里，南极冰架不断后退、变薄并遭受灾难性的崩塌。在这项研究中，我们将南极洲冰架厚度变化长达 25 年的记录从 2010 年延长到 2017 年。在阿蒙森海区，广泛的冰架变薄占主导地位，过去 7 年冰损失速度减缓了 51%，这可归因于自 2010 年以来该地区海洋温度的同时下降。总体而言，南极洲的冰架平均增厚了2010 年至 2017 年间，南极洲西部的冰损失增加了 1.3 m，而南极洲东部和南极半岛的冰增加弥补了这一损失，扭转了过去二十年的负面趋势。整个南极洲冰架厚度变化的详细空间模式表明，未来需要对高空间分辨率观测和技术进行投资。(c) 2020 COSPAR。由 Elsevier Ltd 出版。这是一篇基于 CC BY 许可证 (http://creativecommons.org/licenses/by/4.0/) 的开放获取文章。
Over the past two decades, Antarctic ice shelves have retreated, thinned and suffered catastrophic collapse. In this study we extended the 25-year long record of ice shelf thickness change in Antarctica, from 2010 to 2017. In the Amundsen Sea Sector where widespread ice shelf thinning dominates the signal, a 51% slowdown in the rate of ice loss over the last 7-years can be attributed to a coincident decrease in ocean temperatures in the region since 2010. Overall, ice shelves in Antarctica have thickened by an average of 1.3 m between 2010 and 2017 as ice losses from West Antarctica are compensated by ice gains in East Antarctica and the Antarctic Peninsula, reversing the negative trend of the previous two decades. The detailed spatial pattern of ice shelf thickness change across Antarctica, demonstrates the need for future investment in high spatial resolution observations and techniques.(c) 2020 COSPAR. Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).