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学科主题: Engineering, Aerospace; Astronomy & Astrophysics; Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences
题名: Long-time observation of annual variation of Taiwan Strait upwelling in summer season
作者: Tang, DL ; Kawamura, H ; Guan, L
通讯作者: lingzistdl@yahoo.com
关键词: Taiwan Strait ; upwelling ; AVHRR SST ; SeaWiFS ; Chl-a ; China
刊名: MONITORING OF CHANGES RELATED TO NATURAL AND MANMADE HAZARDS USING SPACE TECHNOLOGY
发表日期: 2004
卷: 33, 期:3, 页:307-312
收录类别: sci
部门归属: Tohoku Univ, Sch Sci, Ctr Atmospher & Ocean Studies, Sendai, Miyagi 9808578, Japan; Chinese Acad Sci, S China Sea Inst Oceanol, Guangzhou, Peoples R China; Jinan Univ, Inst Hydrobiol, Guangzhou, Peoples R China; Ocean Univ Qingdao, Ocean Remote Sensing Inst, Qingdao, Peoples R China
项目归属: LED
摘要: The Taiwan Strait is between Taiwan Island and Mainland China, where several upwelling zones are well known for good fishing grounds. Earlier studies in the strait have been conducted on detecting upwelling by ship measurements with short-term cruises, but long-term variations of upwelling in this region are not understood. The present paper examines satellite images for a long-time observation of two major upwelling zones in the Taiwan Strait: Taiwan Bank upwelling (TBU) and Dongshan Upwelling (DSU). Sea surface temperature (SST) and chlorophyll a (Chl-a) images have been analyzed for summer months (June, July, and August) from 1980 to 2002. Results reveal annual variation of two upwelling zones. These two upwelling zones occur every year characterized with distinct low water temperature and high Chl-a concentrations. During the period from 1989 to 1998, SST is found to be 1.15 degreesC lower in TBU, and 1.42 degreesC lower in the DSU than the Taiwan Strait. The size of DSU has been found to be larger during summer of 1989, 1990, 1993 and 1995; TBU has been found to be weak during summer of 1994 and 1997. Ocean color images obtained from CZCS, OCI, and SeaWiFS also show high Chl-a concentrations (0.8-2.5 Mg m(-3)) in two upwelling zones, which coincide with low SST in terms of location, shape, and time. These high Chl-a concentrations in TBU and DSU may be related to upwelling waters that bring nutrients from bottom to surface. The present results ASO show the potential of using satellite data for monitoring of ocean environment for long time period. (C) 2003 COSPAR. Published by Elsevier Ltd. All rights reserved.
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WOS记录号: WOS:000189505600012
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内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/5643
Appears in Collections:热带海洋环境动力实验室(LTO)_期刊论文

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Tang, DL; Kawamura, H; Guan, L.Long-time observation of annual variation of Taiwan Strait upwelling in summer season,MONITORING OF CHANGES RELATED TO NATURAL AND MANMADE HAZARDS USING SPACE TECHNOLOGY,2004,33(3):307-312
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