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学科主题: Oceanography
题名: Seasonal hypoxia and its potential forming mechanisms in the Mirs Bay, the northern South China Sea
作者: Li, XL ; Shi, HM ; Xia, HY ; Zhou, YP ; Qiu, YW
通讯作者: benlixulu@sohu.com
关键词: Seasonal hypoxia ; Mechanism ; Bottom-water ; Tolo Harbour ; Mirs Bay ; Northern South China Sea
刊名: CONTINENTAL SHELF RESEARCH
发表日期: 2014
卷: 80, 页:1-7
收录类别: sci
部门归属: [Li, Xu-Lu ; Shi, Hua-Ming ; Xia, Hua-Yong] State Ocean Adm, South China Sea Marine Engn Surveying Ctr, Guangzhou 510300, Guangdong, Peoples R China ; [Zhou, Yi-Pin ; Qiu, Yao-Wen] Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou 510301, Guangdong, Peoples R China
项目归属: LTO
资助者: National Key Basic Research Program of China [2013CB956101]
摘要: Hypoxia often occurs in the coastal waters of China. In the present study, data obtained from monthly cruises in the period 1998-2010 were used for analyzing temporal and spatial distributions of hypoxic bottom-water (BW) in the Mirs Bay, the northern South China Sea (NSCS). Also, potential forming mechanisms of the hypoxia were studied and depletion of the dissolved oxygen (DO) in the BW was quantitatively determined. The results showed that the BW hypoxia occurred each year in 10 years and mainly appeared from July to September in the bay within the 13-year study period. During summertime, strong density stratification formed due to both the T increase and S decrease in the surface-water in the bay. The coastal continental shelf BW had continuously intruded into and stably resided in the bay for months under influence of the NSCS southwestern monsoon. Quick biogeochemical cycles of nitrogen and phosphorus supported high phytoplankton productivity in the bay and then resulted in lots of particulate organic matter (POM) continuously to sink to the bottom. Degradation of the detritus POM, in which most was the autochthonous, resulted in DO depletion in the BW, which was estimated at about 3.6 mg L-1 in the inner Tolo Harbour and 2.9 mg L-1 in the main zone of the bay while the hypoxia events occurred. (C) 2014 Elsevier Ltd. All rights reserved.
原文出处: 查看原文
WOS记录号: WOS:000337017700001
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内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/10545
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Li, XL; Shi, HM; Xia, HY; Zhou, YP; Qiu, YW.Seasonal hypoxia and its potential forming mechanisms in the Mirs Bay, the northern South China Sea,CONTINENTAL SHELF RESEARCH,2014,80():1-7
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