干旱区生态环境知识资源中心(Arid): Effect of hydropower dam flow regulation on salt-water intrusion: Sao Francisco River, Brazil

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DOI	10.1016/j.jmarsys.2023.103904
	Effect of hydropower dam flow regulation on salt-water intrusion: Sao Francisco River, Brazil
	Paiva, Barbara P.; Schettini, Carlos A. F.; Siegle, Eduardo
通讯作者	Siegle, E
来源期刊	JOURNAL OF MARINE SYSTEMS
ISSN	0924-7963
EISSN	1879-1573
出版年	2024
卷号	241
英文摘要	The Sao Francisco River is the fourth largest river in Latin America, and particularly important since it crosses the Brazilian semi-arid region. During the 1960s-90s, a series of dams for hydropower were built in cascade, changing drastically the flow regime. To evaluate the influence of changes in the flow on hydrodynamic processes and saline intrusion in the estuary, a three-dimensional hydrodynamic model was applied to the system. The model was calibrated and validated from hydrodynamic data collected in the estuary. The simulated scenarios of river discharges were Q(min), Q(10), Q(80) and Q(max) (corresponding to 600, 5000, 1200, and 12,000 m(3)center dot s(-1), respectively), determined from historical river discharge observations. There was an increase in the mixing and a decrease in the river contribution after the installation of dams. The average salinity in the estuarine domain ranged from 0.7 g center dot kg(-1) for intermediate pre-dam discharge to 15.6 g center dot kg(-1) in the lowest discharges after the dam installations. The results of the simulations were used to establish an exponential relationship between fluvial discharge and saline intrusion, which can be used by management agencies to optimize the water quality in catchments for human consumption.
英文关键词	Sao Francisco River Saltwater intrusion Numerical modeling Hydropower dams Fluvial discharge Estuarine dynamics
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001009870700001
WOS关键词	SEA-LEVEL RISE ; SALTWATER INTRUSION ; CLIMATE-CHANGE ; YANGTZE-RIVER ; SEDIMENT ; ESTUARY ; TRANSPORT ; DYNAMICS ; HYDRODYNAMICS ; BIODIVERSITY
WOS类目	Geosciences, Multidisciplinary ; Marine & Freshwater Biology ; Oceanography
WOS研究方向	Geology ; Marine & Freshwater Biology ; Oceanography
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/404642
推荐引用方式 GB/T 7714	Paiva, Barbara P.,Schettini, Carlos A. F.,Siegle, Eduardo. Effect of hydropower dam flow regulation on salt-water intrusion: Sao Francisco River, Brazil[J],2024,241.
APA	Paiva, Barbara P.,Schettini, Carlos A. F.,&Siegle, Eduardo.(2024).Effect of hydropower dam flow regulation on salt-water intrusion: Sao Francisco River, Brazil.JOURNAL OF MARINE SYSTEMS,241.
MLA	Paiva, Barbara P.,et al."Effect of hydropower dam flow regulation on salt-water intrusion: Sao Francisco River, Brazil".JOURNAL OF MARINE SYSTEMS 241(2024).