The East Siberian sea as a transition zone between Pacific-derived waters and Arctic shelf waters
The East Siberian sea as a transition zone between Pacific-derived waters and Arctic shelf waters
复制标题
DOI：
10.1029/2005gl022490
复制
发表时间：
2005-05-26
影响因子：
5.2
通讯作者：
Tanaka, N
中科院分区：
文献类型：
--
作者：
Semiletov, I;Dudarev, O;Tanaka, N
在本研究中，我们报告了2000年俄罗斯跨北极巡航期间在水文船（HV）Nikolay Kolomeytsev上获得的水文（T和S）和水化学数据，并描述沉积物的顶层（典型样品取自0.5cm以上的底层沉积物）和有机碳的分布（δ（13）C-org）和氮（δ（15）N-org）同位素比率。利用历史水数据和我们巡航的数据，我们将ESS分为两个特定区域：西部区域，受Lena河输入的强烈影响，东部区域，受太平洋水的直接影响。利用稳定的δ（13）C-org和δ（15）N-org同位素，对太平洋“陆源沉积物”与“陆源沉积物”之间的沉积物地球化学边界（或称“地球化学FZ”）进行了探测，认为该边界反映了太平洋水向西延伸的长期（10 ~ 2年尺度）位置。这些是从德米特里·拉普捷夫海峡到长海峡的ESS报告的第一批可靠的水文和地球化学数据，它们揭示了太平洋水和当地陆架水之间相互作用的新见解。
In the present study we report hydrological (T and S) and hydrochemical data obtained during a Russian Trans-Arctic cruise in 2000 onboard the Hydrographic Vessel (HV) Nikolay Kolomeytsev, and describe the top layer of the sediment (a typical sample was taken from the upper 0 5 cm layer of bottom sediment) and the distribution of the organic carbon (delta(13) C-org) and nitrogen (delta(15) N-org) isotope ratios. Using both historical water data and data from our cruise, we divide the ESS into two specific areas: the Western area, influenced strongly by Lena River input, and the Eastern area, under direct influence of Pacific-derived water. We also used the stable delta(13) C-org and delta(15) N-org isotopes to detect the sediment geochemical boundary (or "geochemical FZ") between Pacific "marine-derived sediments" and "terrestrial derived sediments" which can be considered to reflect the long-term (on a scale of 10 2 years) position of the most westward extension of Pacific water. These are among the first reliable hydrological and geochemical data reported for the ESS from the Dmitry Laptev Strait to the Long Strait, and they reveal novel insights about interaction between Pacific water and local shelf water.