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| DOI | 10.1038/s41561-022-00956-9 |
| The importance of Canadian Arctic Archipelago gateways for glacial expansion in Scandinavia | |
| Lofverstrom M.; Thompson D.M.; Otto-Bliesner B.L.; Brady E.C. | |
| 发表日期 | 2022 |
| ISSN | 1752-0894 |
| 起始页码 | 482 |
| 结束页码 | 488 |
| 卷号 | 15期号:6 |
| 英文摘要 | The last glacial cycle began around 116,000 years before present during a period with low incoming solar radiation in Northern Hemisphere summer. Following the glacial inception in North America, the marine sediment record depicts a weakening of the high-latitude ocean overturning circulation and a multi-millennial eastward progression of glaciation across the North Atlantic basin. Modelling studies have shown that reduced solar radiation can initiate inception in North America and Siberia; however, the proximity to the temperate North Atlantic typically precludes ice growth in Scandinavia. Using a coupled Earth-system–ice-sheet model, we show that ice forming in North America may help facilitate glacial expansion in Scandinavia. As large coherent ice masses form and start filling the ocean gateways in the Canadian Archipelago, the transport of comparatively fresh North Pacific and Arctic water through the archipelago is diverted east of Greenland, resulting in a freshening of North Atlantic deep convection regions, sea-ice expansion and a substantial cooling that is sufficient to trigger glacial inception in Scandinavia. This mechanism may also help explain the Younger Dryas cold reversal and the rapid regrowth of the Scandinavian Ice Sheet following several warm events in the last glacial period. © 2022, The Author(s), under exclusive licence to Springer Nature Limited. |
| 语种 | 英语 |
| 来源期刊 | Nature Geoscience
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/262183 |
| 作者单位 | Department of Geosciences, University of Arizona, Tucson, AZ, United States |
| 推荐引用方式 GB/T 7714 | Lofverstrom M.； Thompson D.M.； Otto-Bliesner B.L.； Brady E.C.. The importance of Canadian Arctic Archipelago gateways for glacial expansion in Scandinavia[J],2022,15(6). |
| APA | Lofverstrom M.； Thompson D.M.； Otto-Bliesner B.L.； Brady E.C..(2022).The importance of Canadian Arctic Archipelago gateways for glacial expansion in Scandinavia.Nature Geoscience,15(6). |
| MLA | Lofverstrom M.； Thompson D.M.； Otto-Bliesner B.L.； Brady E.C.."The importance of Canadian Arctic Archipelago gateways for glacial expansion in Scandinavia".Nature Geoscience 15.6(2022). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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