期刊
HYDROLOGICAL SCIENCES JOURNAL-JOURNAL DES SCIENCES HYDROLOGIQUES
卷 66, 期 7, 页码 1211-1221出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/02626667.2021.1925675
关键词
groundwater flow; analytical solution; surface water-groundwater interaction; water surface slope; hyporheic flux
资金
- Scientific Research Projects Coordination Unit of Istanbul University [FDK-201621768]
- National PhD Scholarship Program of the Scientific and Technological Research Council of Turkey (TUBITAK) [2211/A]
The study focuses on the interaction between groundwater systems and water bodies with sloping surfaces, deriving an analytical solution and using a numerical algorithm to investigate the impact of water surface slope on groundwater head distribution and flux between surface water and groundwater. The results show that the water surface slope plays a dominant role in surface water-groundwater interactions.
Determination of hyporheic flow between surface water and groundwater is crucial to clarify the coupled water systems' hydrological and ecological behaviour. Therefore, this study focuses on groundwater systems interacting with water bodies with sloping surfaces. A sloping stream is defined as an aquifer's boundary condition. A recharge/discharge term is incorporated into the groundwater flow equation to represent the flux between groundwater and a water body with a sloping surface. An analytical solution of the groundwater flow equation is derived for a homogeneous and isotropic aquifer of a steady-state case. Additionally, a numerical algorithm is written for comparison purposes. The effect of water surface slope on the groundwater head distribution in the horizontal plane and the flux between surface water and groundwater is investigated. The results show that the analytical solution represents the hydrodynamics of the stream-water body-aquifer system well, and the water surface slope is dominant on surface water-groundwater interactions.
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