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学科主题: Oceanography
题名: Remote sensing oceanography of a harmful algal bloom off the coast of southeastern Vietnam
作者: Tang, DL ; Kawamura, H ; Doan-Nhu, H ; Takahashi, W
通讯作者: lingzistdl@yahoo.com ; kamu@ocean.caos.tohoku.ac.jp
关键词: harmful algal bloom (HAB) ; satellite remote sensing ; upwelling ; SeaWiFS ; chlorophyll a ; AVHRR SST ; South China Sea
刊名: JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
发表日期: 2004
卷: 109, 期:C3, 页:-C3015
收录类别: sci
部门归属: Tohoku Univ, Grad Sch Sci, Ctr Atmospher & Ocean Studies, Sendai, Miyagi 9808578, Japan; Chinese Acad Sci, S China Sea Inst Oceanol, Lab Trop Marine Environm Dynam, Guangzhou, Peoples R China; Fudan Univ, Dept Environm Sci & Engn, Shanghai 200433, Peoples R China; Inst Oceanog, Phytoplankton Lab, Nha Trang, Vietnam; Japan NUS Co Ltd, Minato Ku, Tokyo 1080022, Japan
项目归属: LED
摘要: [ 1] Harmful algal blooms (HABs) in the southeastern Vietnamese coastal waters have caused large economic losses in aquacultured and wild fisheries in recent years; however, there have been few oceanographic studies on these HAB events. The present study reports an extensive HAB off southeastern Vietnamese waters during late June to July 2002 with in situ observations and analyzes the oceanographic conditions using satellite remote sensing data. The HAB had high chlorophyll a ( Chl a) concentrations ( up to 4.5 mg m-3) occurring -200 km off the coast and -200 km northeast of the Mekong River mouth for a period of -6 weeks. The bloom was dominated by the harmful algae haptophyte Phaeocystis cf. globosa and caused a very significant mortality of aquacultured fish and other marine life. In the same period, sea surface temperature (SST) imagery showed a cold water plume extending from the coast to the open sea, and QuikScat data showed strong southwesterly winds blowing parallel to the coastline. This study indicated that the HAB was induced and supported by offshore upwelling that brings nutrients from the deep ocean to the surface and from coastal water to offshore water and that the upwelling was driven by strong wind through Ekman transport when winds were parallel to the coastline. This study demonstrated the possibility of utilizing a combination of satellite data of Chl a, SST, and wind velocity together with coastal bathymetric information and in situ observations to give a better understanding of the biological oceanography of HABs.
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WOS记录号: WOS:000220225700002
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内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/5661
Appears in Collections:热带海洋环境动力实验室(LTO)_期刊论文

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Recommended Citation:
Tang, DL; Kawamura, H; Doan-Nhu, H; Takahashi, W.Remote sensing oceanography of a harmful algal bloom off the coast of southeastern Vietnam,JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,2004,109(C3):-C3015
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文件名: Remote sensing oceanography of a harmful algal bloom off the coast of southeastern Vietnam.pdf
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