globalchange  > 气候变化事实与影响
DOI: 10.3390/w11040837
WOS记录号: WOS:000473105700207
论文题名:
Flow Division Dynamics in the Mekong Delta: Application of a 1D-2D Coupled Model
作者: Eslami, Sepehr1; Hoekstra, Piet1; Kernkamp, Herman2; Nam Nguyen Trung3; Dung Do Duc3; Tho Tran Quang3; Februarianto, Mochamad4; Van Dam, Arthur2; van der Vegt, Maarten1
通讯作者: Eslami, Sepehr
刊名: WATER
ISSN: 2073-4441
出版年: 2019
卷: 11, 期:4
语种: 英语
英文关键词: Mekong Delta ; multi-channel estuary ; discharge division ; flow division ; tidal propagation ; flexible mesh ; irrigation system ; secondary channels
WOS关键词: SEDIMENT DYNAMICS ; HYDROLOGICAL ALTERATIONS ; RIVER DISCHARGE ; SALT INTRUSION ; CLIMATE-CHANGE ; WATER LEVELS ; CHANNEL ; IMPACT ; PROPAGATION ; TRANSPORT
WOS学科分类: Water Resources
WOS研究方向: Water Resources
英文摘要:

The Mekong Delta constitutes a complicated multi-channel estuarine system, exchanging water with a delta-wide irrigation system. A 1D-2DH coupled numerical domain is calibrated and validated for water level and discharge during the dry season. This approach benefits from the simplicity of a 1D network within the estuarine and irrigation systems, while maintaining the interaction with the spatial tidal dynamics of the 2DH coastal domain. First, the role of the irrigation system on tidal dynamics is quantified; then, tidal propagation, freshwater budget, and the effect of offshore subtidal water level on discharge division are investigated. The results show that the complex irrigation system, in a friction-like manner, reduces the tidal amplitude up to 25%. The channels aggregate to 1% of the total water volume in the delta, while accommodating up to 10% of the tidal prism. Tidal amplitude reduces upstream, while subtidal water level is highly sensitive to upstream discharge, spring-neap cycles, and wind-generated offshore surge. Although cumulative discharge division within the estuarine network is consistent, temporal discharge division can be significantly sensitive to offshore wind-surge. During the dry season, it can reverse the expected subtidal discharge division within the time-scale of a few days and potentially influence salt intrusion.


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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/133095
Appears in Collections:气候变化事实与影响

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作者单位: 1.Univ Utrecht, Fac Geosci, Dept Phys Geog, NL-3584 CB Utrecht, Netherlands
2.Deltares, Software Dept, NL-2629 HV Delft, Netherlands
3.Southern Inst Water Resources Planning, Ward 3, Ho Chi Minh City 72710, Vietnam
4.Univ Utrecht, Fac Sci, Inst Marine & Atmospher Res Utrecht IMAU, Dept Phys, NL-3508 TA Utrecht, Netherlands

Recommended Citation:
Eslami, Sepehr,Hoekstra, Piet,Kernkamp, Herman,et al. Flow Division Dynamics in the Mekong Delta: Application of a 1D-2D Coupled Model[J]. WATER,2019-01-01,11(4)
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