Vertical flux and resuspension of settling particulate matter of Sanggou Bay in summer and autumn

Yang Qian; Yang Shu; Song Xianli; Sun Yao

doi:10.3969/j.issn.0253-4193.2014.12.008

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Yang Qian, Yang Shu, Song Xianli, Sun Yao. Vertical flux and resuspension of settling particulate matter of Sanggou Bay in summer and autumn[J]. Haiyang Xuebao, 2014, 36(12): 85-90. doi: 10.3969/j.issn.0253-4193.2014.12.008

Citation:

Yang Qian, Yang Shu, Song Xianli, Sun Yao. Vertical flux and resuspension of settling particulate matter of Sanggou Bay in summer and autumn[J]. Haiyang Xuebao, 2014, 36(12): 85-90. doi: 10.3969/j.issn.0253-4193.2014.12.008

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Vertical flux and resuspension of settling particulate matter of Sanggou Bay in summer and autumn

doi: 10.3969/j.issn.0253-4193.2014.12.008

1.
Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China
2.
Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China;Marine Culture Institute of Shandong Province, Qingdao 266002, China

Received Date: 2013-10-30
Rev Recd Date: 2014-10-08

Abstract

Abstract

The distribution feature of vertical flux of SPM was studied with twin-tube sediment traps tethered at bottom in Sanggou Bay,which is an important aqua-culture waters in north coast of China,in summer and autumn. At the same time,resuspension proportion of SPM was determined by mark method of metal Al. The average apparent vertical fluxes determined near bottom about 1m of SPM,POC,PTN and PTP was separately 1 511.4 g/(m²·d),20.01 g/(m²·d),1.497 g/(m²·d) and 0.474 g/(m²·d),which is much higher than other coastal waters of China,and the average bottom resuspension proportion of SPM was 92.8% and unthinkably high. This high resuspension was mainly caused by wind-stirring. As affected by resuspension,the average vertical flux determined near bottom was 2.7 times of that at middle-layer and the vertical fluxes in fall or culture areas of kelp and scallop were significantly higher than that in summer or culture area of oyster. Net vertical flux,corrected by resuspension proportion,had still significant spatial and seasonal change,but there's an important conversion on its controlling mechanism. The net SPM mainly rooted in upper waters,in which there's intense metabolic action produced by cultured and accrete organism. Bivalve excreta made the net settling flux in culture areas of oyster and scallop higher than that in culture area of kelp,and the net settling flux in autumn higher than that in summer with cultured and accrete organism growth and excreta increment.
- settling flux,
- resuspension,
- SPM,
- Sanggou Bay

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References(30)

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