Relation of subtropical Atlantic temperature, high-latitude ice rafting, deep water formation, and European climate 130,000-60,000 years ago
Relation of subtropical Atlantic temperature, high-latitude ice rafting, deep water formation, and European climate 130,000-60,000 years ago
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13万-6万年前亚热带大西洋温度、高纬度冰漂流、深水形成与欧洲气候的关系
DOI：
10.1016/s0277-3791(02)00078-1
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发表时间：
2002
影响因子：
4
通讯作者：
E. Boyle
中科院分区：
文献类型：
--
作者：
S. Lehman;J. Sachs;A. Crotwell;L. Keigwin;E. Boyle
北大西洋副热带西部海面温度的一项新的高分辨率记录记录了海洋同位素第 5 阶段内的一系列突然冷却，这可以客观地与副极地纬度冰盖排放增加和北大西洋深水形成减少的海洋核心证据相关。这些结果表明，深海环流的冰盖强迫影响了北大西洋大部分地区的表面温度。与法国格兰德皮尔花粉记录的拟议相关性表明，花粉序列中看到的每个寒冷事件在亚热带海洋温度记录中都有一个独特的对应物。如果这种相关性是正确的，则表明欧洲埃米安最温暖的部分由于海洋变化而突然结束，并且埃米安随后的后温带阶段很好地延伸到了与海洋同位素5d亚阶段相对应的冰盖生长区间。
A new, high-resolution record of sea surface temperature from the subtropical western North Atlantic documents a series of abrupt coolings within marine isotope stage 5 which can be objectively correlated with marine-core evidence for increased ice-sheet discharge at subpolar latitudes and reduced North Atlantic deep water formation. These results indicate that ice-sheet forcing of deep ocean circulation influenced surface temperatures over much of the North Atlantic. A proposed correlation to the pollen record of Grande Pile, France, indicates that each cold event seen in the pollen sequence has a unique counterpart in the record of subtropical ocean temperature. If this correlation is correct, it suggests that the warmest part of the European Eemian ended suddenly in response to oceanographic changes, and that the subsequent post-temperate phase of the Eemian extended well into the interval of ice sheet growth corresponding to marine isotope substage 5d.