North Atlantic oceanography as possible cause of Antarctic glaciation and eutrophication
North Atlantic oceanography as possible cause of Antarctic glaciation and eutrophication
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DOI：
10.1038/284615a0
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发表时间：
1980-04
期刊：
影响因子：
64.8
通讯作者：
D. Schnitker
中科院分区：
文献类型：
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作者：
D. Schnitker
塔林1认为，当大陆块占据极地位置，使极地与海洋的影响隔绝，并且附近的海洋可以为极地冰盖的形成和维持提供水分时，可能会发生冰河时代。这种条件在南半球逐渐建立起来，现在的冰河时代开始于1300万年前2。新生代环南极地理和海洋学的演变最近已由Schlett3总结。我在这里报告说，环南极古地理学和古海洋学本身不足以导致南极冰川作用。一个模型表明，最后的触发事件发生在北大西洋。
Tarling1suggested that ice ages may occur when continental blocks occupy polar positions, isolating the pole from oceanic influences, and when nearby seas are available to provide moisture for the build-up and maintenance of polar ice caps. Such conditions gradually became established in the Southern Hemisphere where the present ice age began 13 Myr ago2. The Cenozoic circum-Antarctic geographic and oceanographic evolution has been recently summarised by Kennett3. I report here that circum-Antarctic palaeogeography and palaeoceanography alone were insufficient to lead to the Antarctic glaciation. A model is presented that suggests that the final triggering events took place in the North Atlantic.