Distribution of river water and sea-ice melted water in Chukchi Sea in summer

Tong Jinlu; Chen Min; Pan Hong; Yang Weifeng; Zhang Run; Zheng Minfang; Qiu Yusheng

doi:10.3969/j.issn.0253-4193.2014.10.010

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Tong Jinlu, Chen Min, Pan Hong, Yang Weifeng, Zhang Run, Zheng Minfang, Qiu Yusheng. Distribution of river water and sea-ice melted water in Chukchi Sea in summer[J]. Haiyang Xuebao, 2014, 36(10): 90-102. doi: 10.3969/j.issn.0253-4193.2014.10.010

Citation:

Tong Jinlu, Chen Min, Pan Hong, Yang Weifeng, Zhang Run, Zheng Minfang, Qiu Yusheng. Distribution of river water and sea-ice melted water in Chukchi Sea in summer[J]. Haiyang Xuebao, 2014, 36(10): 90-102. doi: 10.3969/j.issn.0253-4193.2014.10.010

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Distribution of river water and sea-ice melted water in Chukchi Sea in summer

doi: 10.3969/j.issn.0253-4193.2014.10.010

1.
College of Ocean and Earth Sciences, Xiamen University, Xiamen 361005, China
2.
College of Ocean and Earth Sciences, Xiamen University, Xiamen 361005, China;State Key Laboratory of Marine Environmental Science, Xiamen 361005, China

Received Date: 2014-04-20
Rev Recd Date: 2014-07-09

Abstract

Abstract

On the basis of the measured oxygen isotopic composition of seawater,the S and δ¹⁸O mass balance was employed to determine the fraction of river water and sea-ice melted water in Chukchi Sea in summer 2008. The spatial patterns of river water and sea-ice melted water were revealed and the affecting factors were disccussed. The fractions of river water decreased with the increasing depth,with a range from 1.9% to 18.4%. The integrated heights of river water (I_fR) were 1.3~16.6 m,with an average of (4.8±4.0)m. I_fR showed a spatial characteristic with high values in the east and north and low values in the west and south. This spatial variation of river water was ascribed to the difference amount of river water carried by the Pacific inflows (e.g.,high river water components in the Alaska Current Water and low river water components in the Bering Shelf water),the pathway of the Pacific inflows and the Ekman pumping of Beaufort Gyre. The fractions of sea-ice melted water decreased dramaticly with the increasing depth. A negative value was observed at depth of about 20 m to 30 m. The integrated heights of sea-ice melted water (I_fI) were from -3.2 m to 1.7 m,with an average of (0.3±1.2)m. I_fI was higher in the west and south,but lower in the east and north. The spatial variation of sea-ice melted water was attributed to the strength and time of the Pacific inflows,as well as the topographically impact which diverted the Pacific inflow westward.
- river water,
- sea-ice melted water,
- ¹⁸O,
- Chukchi Sea

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References(52)

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