globalchange  > 气候变化与战略
DOI: 10.5194/hess-24-1871-2020
论文题名:
A novel approach for the assessment of morphological evolution based on observed water levels in tide-dominated estuaries
作者: Cai H.; Zhang P.; Garel E.; Matte P.; Hu S.; Liu F.; Yang Q.
刊名: Hydrology and Earth System Sciences
ISSN: 1027-5606
出版年: 2020
卷: 24, 期:4
起始页码: 1871
结束页码: 1889
语种: 英语
Scopus关键词: Damping ; Hydrodynamics ; Inverse problems ; Land reclamation ; Morphology ; Tides ; Water levels ; Analytical approach ; Estuarine environments ; Historical development ; Morphological changes ; Morphological evolution ; Pearl River estuary ; Protection and management ; Tide-dominated estuaries ; Estuaries ; amplification ; anthropogenic effect ; damping ; estuarine ecosystem ; hydrodynamics ; land reclamation ; water depth ; China ; Guangdong ; Lingdingyang Bay ; Zhujiang Estuary ; Zhujiang Estuary
英文摘要: Assessing the impacts of both natural (e.g. tidal forcing from the ocean) and human-induced changes (e.g. dredging for navigation and land reclamation) on estuarine morphology is particularly important for the protection and management of the estuarine environment. In this study, a novel analytical approach is proposed for the assessment of estuarine morphological evolution in terms of tidally averaged depth on the basis of the observed water levels along the estuary. The key lies in deriving a relationship between wave celerity and tidal damping or amplification. For given observed water levels at two gauging stations, it is possible to have a first estimation of both wave celerity (distance divided by tidal travelling time) and tidal damping or amplification rate (tidal range difference divided by distance), which can then be used to predict the morphological changes via an inverse analytical model for tidal hydrodynamics. The proposed method is applied to the Lingdingyang Bay of the Pearl River Estuary, located on the southern coast of China, to analyse the historical development of the tidal hydrodynamics and morphological evolution. The analytical results show surprisingly good correspondence with observed water depth and volume in this system. The merit of the proposed method is that it provides a simple approach for understanding the decadal evolution of the estuarine morphology through the use of observed water levels, which are usually available and can be easily measured.

. © 2020 Royal Society of Chemistry. All rights reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/162728
Appears in Collections:气候变化与战略

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作者单位: Cai, H., Inst. of Estuarine and Coast. Res./State and Loc. Jt. Eng. Lab. of Estuarine Hydraulic Technology, School of Marine Engineering and Technology, Sun Yat-sen University, Guangzhou, China, Guangdong Provincial Engineering Research Center of Coasts, Islands and Reefs/ Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, China; Zhang, P., Inst. of Estuarine and Coast. Res./State and Loc. Jt. Eng. Lab. of Estuarine Hydraulic Technology, School of Marine Engineering and Technology, Sun Yat-sen University, Guangzhou, China, Guangdong Provincial Engineering Research Center of Coasts, Islands and Reefs/ Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, China; Garel, E., Centre for Marine and Environmental Research (CIMA), University of Algarve, Faro, Portugal; Matte, P., Meteorological Research Division, Environment and Climate Change CanadaQC, Canada; Hu, S., Inst. of Estuarine and Coast. Res./State and Loc. Jt. Eng. Lab. of Estuarine Hydraulic Technology, School of Marine Engineering and Technology, Sun Yat-sen University, Guangzhou, China, Guangdong Provincial Engineering Research Center of Coasts, Islands and Reefs/ Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, China; Liu, F., Inst. of Estuarine and Coast. Res./State and Loc. Jt. Eng. Lab. of Estuarine Hydraulic Technology, School of Marine Engineering and Technology, Sun Yat-sen University, Guangzhou, China, Guangdong Provincial Engineering Research Center of Coasts, Islands and Reefs/ Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, China; Yang, Q., Inst. of Estuarine and Coast. Res./State and Loc. Jt. Eng. Lab. of Estuarine Hydraulic Technology, School of Marine Engineering and Technology, Sun Yat-sen University, Guangzhou, China, Guangdong Provincial Engineering Research Center of Coasts, Islands and Reefs/ Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, China

Recommended Citation:
Cai H.,Zhang P.,Garel E.,et al. A novel approach for the assessment of morphological evolution based on observed water levels in tide-dominated estuaries[J]. Hydrology and Earth System Sciences,2020-01-01,24(4)
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