Seasonal hypoxia and its potential forming mechanisms in the Mirs Bay, the northern South China Sea

CORC > 南海海洋研究所 > 中国科学院南海海洋研究所 > 热带海洋环境国家重点实验室(LTO)

	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
刊名	CONTINENTAL SHELF RESEARCH
	2014
卷号	80 页码:1-7
关键词	Seasonal hypoxia Mechanism Bottom-water Tolo Harbour Mirs Bay Northern South China Sea
ISSN号	0278-4343
通讯作者	benlixulu@sohu.com
中文摘要	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.
学科主题	Oceanography
收录类别	SCI
资助信息	National Key Basic Research Program of China [2013CB956101]
原文出处	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000337017700001
公开日期	2014-12-11
内容类型	期刊论文
源URL	[http://ir.scsio.ac.cn/handle/344004/10545]
专题	南海海洋研究所_热带海洋环境国家重点实验室(LTO)
推荐引用方式 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.(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.