SCSIO OpenIR  > 热带海洋环境国家重点实验室(LTO)
The influence of late summer typhoons and high river discharge on water quality in Hong Kong waters
Zhou, WH; Yin, KD; Harrison, PJ; Lee, JHW; yinkd@mail.sysu.edu.cn
2012
Source PublicationESTUARINE COASTAL AND SHELF SCIENCE
ISSN0272-7714
Volume111Pages:35-47
AbstractA typhoon produces a rapid mixing and flushing event and it can be added to the list of other factors such as shallow water depth, spring tidal mixing, the Pearl River discharge, summer upwelling that make Hong Kong waters relatively resistant to eutrophication impacts. Two typhoons passed over Hong Kong waters and provided an opportunity to document the changes in water quality in late summer 2003. Before the typhoon (Aug 19-20) and during a neap tide, a large algal bloom (>10 mu g Chl-a L-1) occurred in the stratified southern waters influenced by the Pearl River estuarine waters with high NO3. However, PO4 and SiO4 were drawn down to near limiting concentrations by the large bloom. After the typhoons, Chl-a decreased to 2 mu g L-1 due to vertical mixing and advection. The heavy rainfall and increased river discharge quickly re-set the water column to the usual strong summer stratification in only a few days. As a result, high nutrients in the river discharge stimulated another large algal bloom a few days after the next neap tide when tidal mixing was reduced. In the southern waters, the deeper station showed stronger stratification and lower bottom dissolved oxygen (DO) than the shallower station suggesting that the low DO in the bottom water may have come from offshore transport. (c) 2012 Elsevier Ltd. All rights reserved.
Department[Yin, Kedong] Sun Yat Sen Univ, Sch Marine Sci, Guangzhou 510275, Guangdong, Peoples R China; [Zhou, Weihua] Chinese Acad Sci, S China Sea Inst Oceanol, Trop Marine Biol Res Stn TMBRS Hainan, Guangzhou 510301, Guangdong, Peoples R China; [Zhou, Weihua] Chinese Acad Sci, State Key Lab Trop Oceanog LTO, Key Lab Marine Bioresources Sustainable Utilizat, S China Sea Inst Oceanol, Guangzhou 510301, Guangdong, Peoples R China; [Zhou, Weihua; Harrison, Paul J.] Hong Kong Univ Sci & Technol, Div Environm, Kowloon, Hong Kong, Peoples R China; [Yin, Kedong] Griffith Univ, Environm Futures Ctr, Brisbane, Qld 4111, Australia; [Lee, Joseph H. W.] Hong Kong Univ Sci & Technol, Dept Civil & Environm Engn, Kowloon, Hong Kong, Peoples R China
KeywordTyphoon Nutrients Water Quality Eutrophication Algal Bloom Pearl River Estuary Hong Kong Waters
Subject AreaMarine & Freshwater Biology ; Oceanography
Language英语
Funding ProjectLTO
WOS IDWOS:000309435900004
Citation statistics
Document Type期刊论文
Identifierhttp://ir.scsio.ac.cn/handle/344004/10097
Collection热带海洋环境国家重点实验室(LTO)
Corresponding Authoryinkd@mail.sysu.edu.cn
Recommended Citation
GB/T 7714
Zhou, WH,Yin, KD,Harrison, PJ,et al. The influence of late summer typhoons and high river discharge on water quality in Hong Kong waters[J]. ESTUARINE COASTAL AND SHELF SCIENCE,2012,111:35-47.
APA Zhou, WH,Yin, KD,Harrison, PJ,Lee, JHW,&yinkd@mail.sysu.edu.cn.(2012).The influence of late summer typhoons and high river discharge on water quality in Hong Kong waters.ESTUARINE COASTAL AND SHELF SCIENCE,111,35-47.
MLA Zhou, WH,et al."The influence of late summer typhoons and high river discharge on water quality in Hong Kong waters".ESTUARINE COASTAL AND SHELF SCIENCE 111(2012):35-47.
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