Eurasian Arctic shelf hydrography: Exchange and residence time of southern Laptev Sea waters
Eurasian Arctic shelf hydrography: Exchange and residence time of southern Laptev Sea waters
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DOI：
10.1016/j.csr.2009.06.009
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发表时间：
2009-08-20
影响因子：
2.3
通讯作者：
Kassens, H.
中科院分区：
文献类型：
--
作者：
Bauch, D.;Dmitrenko, I.;Kassens, H.
拉普捷夫海的水文特征受到河水和海冰过程的显著影响，这些过程在年周期中变化很大。尽管存在河口结构，但内部和外部大陆架区域有时是分离的，正如夏季在勒拿河羽流下方形成的温暖中间层的稳定性所证明的那样。我们证明，这个温暖层的残余物被保存在快冰下面，直到冬季结束，而只有稍微往北一点，在多冰区陆地快冰的近海，背斜被侵蚀，没有发现这个层的特征。夏季形成的暖中间层（WIL）可作为整个冬季拉普捷夫海陆架水域的示踪剂。由此估计，拉普捷夫海南部海水的停留时间至少为夏季至次年冬末/春末。2009爱思唯尔有限公司版权所有。
The hydrography of the Laptev Sea is significantly influenced by river water and sea-ice processes, which are highly variable over the annual cycle. Despite of an estuarine structure the inner and outer shelf regions are decoupled at times as documented by the stability of a warm intermediate layer formed during summer below the Lena River plume. We demonstrate that a remnant of this warm layer is preserved below the fast ice until the end of winter, while only slightly farther to the north, offshore of the land fast ice in the polynya region, the pycnocline is eroded and no signature of this layer is found. The warm intermediate layer (WIL) formed during summer can be used as tracer for Laptev Sea shelf waters throughout the winter. There by, residence times of southern Laptev Sea waters can be estimated to be at least from summer to the end of winter/spring of the following year. (C) 2009 Elsevier Ltd. All rights reserved.