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学科主题: Oceanography
题名: Tides and tidal currents in the pearl river estuary
作者: Mao, QW ; Shi, P ; Yin, KD ; Gan, JP ; Qi, YQ
通讯作者: qwmao@scsio.ac.cn
关键词: Pearl River Estuary ; tidal cycles ; tidal ranges ; tidal asymmetry ; tidal flows ; water circulation
刊名: CONTINENTAL SHELF RESEARCH
发表日期: 2004
卷: 24, 期:16, 页:1797-1808
收录类别: sci
部门归属: Chinese Acad Sci, S China Sea Inst Oceanog, Key Lab Trop Marine Environm Dynam, Guangzhou, Peoples R China; Hong Kong Univ Sci & Technol, AMCE Program, Kowloon, Hong Kong, Peoples R China
项目归属: LED
摘要: Several cruises were conducted to investigate the variability in tidal levels, tidal flows, and water circulation in the Pearl River estuary during the dry and wet seasons in 1998. Unlike other temperate estuaries, the average tidal range was small in the offshore waters and increased gradually towards the estuary, reaching the maximum in the upstream part of the Pearl River estuary. The extent of the amplitude increment was different between the diurnal and semi-diurnal constituents. The percentage of sea level variance in the semi-diurnal band increased when the tide progressed upstream, but it reversed in the diurnal band. Thus, the accentuated sea level variance in the semi-diurnal band resulted in the increased amplitudes of semi-diurnal constituents which were larger than diurnal constituents. The distribution of the mean current in the estuary depicted an anti-clockwise circulation in the estuary: freshwater was dominant on the western side of the estuary, while salt water was dominant on the eastern side. The Pearl River estuary also showed a typical salt wedge circulation: a salt water intrusion largely occurred via the eastern channel in the estuary while river outflow dominated the western channel. In this study, long time series and large spatial coverage of tide and current observations allow in depth analysis of the temporal and spatial variations of tide and circulation, and the associated influence from open ocean in the Pearl River estuary. (C) 2004 Elsevier Ltd. All rights reserved.
原文出处: 查看原文
WOS记录号: WOS:000225183000006
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内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/5601
Appears in Collections:热带海洋环境动力实验室(LTO)_期刊论文

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Mao, QW; Shi, P; Yin, KD; Gan, JP; Qi, YQ.Tides and tidal currents in the pearl river estuary,CONTINENTAL SHELF RESEARCH,2004,24(16):1797-1808
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