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Characteristics and flux of settling particulate matter in neritic waters: The southern Yellow Sea and the East China Sea

文献类型： 外文期刊

作者： Guo, Xuewu 1 ; Zhang, Yansong 2 ; Zhang, Feijun 3 ; Cao, Qiyuan 4 ;

作者机构： 1.Chinese Acad Fishery Sci, Yellow Sea Fisheries Res Inst, Lab Stock Assessment & Ecosyst, Key Lab Fishery Resources & Ecoenvironm, Qingdao 266071, Shandong, Peoples R China

2.Jiaozhou Environm Protect Bur, Qingdao 266300, Peoples R China

3.Zhejiang Ocean Univ, Fishery Coll, Zhoushan 316000, Peoples R China

4.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China

关键词： Settling particulate matter;Particle flux;Resuspension;Lateral advection;Yellow Sea;East China Sea

期刊名称：DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY （ 影响因子：2.732； 五年影响因子：3.419 ）

ISSN： 0967-0645

年卷期： 2010 年 57 卷 11-12 期

页码：

收录情况： SCI

摘要： The typology and flux of settling particulate matter (SPM) were investigated based on sediment trap sampling at six typical stations in the Yellow Sea and the East China Sea. The settling particulate matter in the neritic seas was sorted into three categories, lithogenic particles, living organisms, and particle aggregates. The mass of individual organisms is an important portion of particulate matter in the neritic waters. The aggregates contain six types, mucus aggregates, fecal pellets, diatom aggregates, silicoflagellate aggregates, tintinnids, and miscellaneous aggregates, of which the silicoflagellate aggregates and tintinnids are the most abundant in the Yellow Sea and the East China Sea. High particle fluxes, such as 215 to 874 g m(-2). day(-1) SPM in the bottom layer, were found at three stations where the water was well mixed, and the maximum flux was detected in the boundary area between the Yellow Sea and the East China Sea, where a wide nepheloid layer was present. Hence, particle flux in neritic waters can be easily shifted by water turbulence. The net vertical flux (123 to 961 mg C day(-1)), the contribution of lateral advection to resuspension flux (5 to 76%), and the particulate organic carbon export ratio (18 to 60%) were estimated for the other three stations where the water was stratified. The highest values were all found in the upwelling area off the Zhejiang coast, suggesting that the area of high productivity provides a high net vertical flux of SPM. (C) 2010 Elsevier Ltd. All rights reserved.

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