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学科主题: Marine & Freshwater Biology; Oceanography
题名: The influence of late summer typhoons and high river discharge on water quality in Hong Kong waters
作者: Zhou, WH ; Yin, KD ; Harrison, PJ ; Lee, JHW
通讯作者: yinkd@mail.sysu.edu.cn
关键词: typhoon ; nutrients ; water quality ; eutrophication ; algal bloom ; Pearl River Estuary ; Hong Kong waters
刊名: ESTUARINE COASTAL AND SHELF SCIENCE
发表日期: 2012
卷: 111, 页:35-47
部门归属: [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
项目归属: LTO
摘要: A 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.
语种: 英语
WOS记录号: WOS:000309435900004
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/10097
Appears in Collections:热带海洋环境国家重点实验室(LTO)_期刊论文

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Zhou, WH; Yin, KD; Harrison, PJ; Lee, JHW.The influence of late summer typhoons and high river discharge on water quality in Hong Kong waters,ESTUARINE COASTAL AND SHELF SCIENCE,2012,111():35-47
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