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Seasonal hypoxia and its potential forming mechanisms in the Mirs Bay, the northern South China Sea
Li, XL; Shi, HM; Xia, HY; Zhou, YP; Qiu, YW; benlixulu@sohu.com
2014
Source PublicationCONTINENTAL SHELF RESEARCH
ISSN0278-4343
Volume80Pages:1-7
AbstractHypoxia 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.
Department[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
KeywordSeasonal Hypoxia Mechanism Bottom-water Tolo Harbour Mirs Bay Northern South China Sea
Subject AreaOceanography
Funding OrganizationNational Key Basic Research Program of China [2013CB956101] ; National Key Basic Research Program of China [2013CB956101] ; National Key Basic Research Program of China [2013CB956101] ; National Key Basic Research Program of China [2013CB956101]
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Indexed Bysci
Funding ProjectLTO
Funding OrganizationNational Key Basic Research Program of China [2013CB956101] ; National Key Basic Research Program of China [2013CB956101] ; National Key Basic Research Program of China [2013CB956101] ; National Key Basic Research Program of China [2013CB956101]
WOS IDWOS:000337017700001
Citation statistics
Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.scsio.ac.cn/handle/344004/10545
Collection热带海洋环境国家重点实验室(LTO)
Corresponding Authorbenlixulu@sohu.com
Recommended Citation
GB/T 7714
Li, XL,Shi, HM,Xia, HY,et al. Seasonal hypoxia and its potential forming mechanisms in the Mirs Bay, the northern South China Sea[J]. CONTINENTAL SHELF RESEARCH,2014,80:1-7.
APA Li, XL,Shi, HM,Xia, HY,Zhou, YP,Qiu, YW,&benlixulu@sohu.com.(2014).Seasonal hypoxia and its potential forming mechanisms in the Mirs Bay, the northern South China Sea.CONTINENTAL SHELF RESEARCH,80,1-7.
MLA Li, XL,et al."Seasonal hypoxia and its potential forming mechanisms in the Mirs Bay, the northern South China Sea".CONTINENTAL SHELF RESEARCH 80(2014):1-7.
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