globalchange  > 气候变化事实与影响
DOI: 10.5194/hess-18-3987-2014
Scopus记录号: 2-s2.0-84908032230
论文题名:
Impact of the Hoa Binh dam (Vietnam) on water and sediment budgets in the Red River basin and delta
作者: Vinh V; D; , Ouillon S; , Thanh T; D; , Chu L; V
刊名: Hydrology and Earth System Sciences
ISSN: 10275606
出版年: 2014
卷: 18, 期:10
起始页码: 3987
结束页码: 4005
语种: 英语
Scopus关键词: Red River basin ; Sediment budgets ; Viet Nam ; dam construction ; delta ; dredging ; impoundment ; sediment budget ; sedimentation rate ; siltation ; suspended sediment ; water budget ; Hai Phong ; Hanoi ; Hoa Binh Reservoir ; Red Basin [Asia] ; Viet Nam
英文摘要: The Hoa Binh dam (HBD), located on a tributary of the Red River in Vietnam, has a capacity of 9.45 × 109 m3 and was commissioned in December 1988. Although it is important for flood prevention, electricity production and irrigation in northern Vietnam, the Hoa Binh dam has also highly influenced the suspended sediment distribution in the lower Red River basin, in the delta and in the coastal zone. Its impact was analysed from a 50-year data set of water discharge and suspended sediment concentration (1960-2010), and the distribution of water and sediment across the nine mouths of the delta was simulated using the MIKE11 numerical model before and after the dam settlement. Although water discharge at the delta inlet decreased by only 9%, the yearly suspended sediment flux dropped, on average, by 61% at Son Tay near Hanoi (from 119 to 46 × 106 t yr-1). Along the coast, reduced sedimentation rates are coincident with the lower sediment delivery observed since the impoundment of the Hoa Binh dam. Water regulation has led to decreased water discharge in the wet season (-14% in the Red River at Son Tay) and increased water discharge in the dry season (+12% at the same station). The ratios of water and suspended sediment flows, as compared to the total flows in the nine mouths, increased in the northern and southern estuaries and decreased in the central, main Ba Lat mouth. The increasing volume of dredged sediments in the Haiphong harbour is evidence of the silting up of the northern estuary of Cam-Bach Dang. The effect of tidal pumping on enhanced flow occurring in the dry season and resulting from changed water regulation is discussed as a possible cause of the enhanced siltation of the estuary after Hoa Binh dam impoundment. © 2014 Author(s).
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/78112
Appears in Collections:气候变化事实与影响

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作者单位: Institute of Marine Environment and Resources, VAST, 246 Danang Street, Haiphong, Viet Nam; IRD, Université de Toulouse, UPS (OMP), UMR5566-LEGOS, 14 av. Edouard Belin, 31400 Toulouse, France; University of Science and Technology of Hanoi (USTH), 18 Hoang Quoc Viet, Cau Giay, Hanoi, Viet Nam; Vietnam Institute of Meteorology, Hydrology and Environment, 62 Nguyen Chi Thanh, Hanoi, Viet Nam

Recommended Citation:
Vinh V,D,, Ouillon S,et al. Impact of the Hoa Binh dam (Vietnam) on water and sediment budgets in the Red River basin and delta[J]. Hydrology and Earth System Sciences,2014-01-01,18(10)
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