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首页> 外文期刊>Advances in Water Resources >Hillslope-storage Boussinesq model for simulating subsurface water storage dynamics in scantily-gauged catchments
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Hillslope-storage Boussinesq model for simulating subsurface water storage dynamics in scantily-gauged catchments

机译：坡度狭窄集水区地下储水动力学模拟的坡面存储Boussinesq模型

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摘要

Limited geo-hydro-meteorological data availability in most of the subsurface water catchments world-wide has constrained the effective surface and subsurface water management. For improved subsurface water modelling in real semi-gauged catchments, the direct-rainfall-recharge (DRR)-based low-dimensional hillslope-storage Boussinesq (hsB) model is enhanced by incorporating saturated phase processes of surface ponding (SP) in agricultural lands, unsaturated zone processes during non-monsoon (dry) period, bedrock leakage (BL) flux between the hillslope-aquifer and underlying confined aquifer, and root-zone water balance (WB) on the basis of precipitation forcing, catchment topography, and land-use/land-cover dynamics. The developed approaches are field-tested by considering the catchment as both semi-gauged regarding limited water table elevation (WTE) data and fully ungauged (no WTE data). The results reveal that the developed WB-SP-BL-based hsB model variant performed the best in reproducing the observed WTE in six experimental wells in the Kanjhari reservoir catchment (125.04 km(2)) in eastern India with the Nash-Sutcliffe model efficiency 67%, root mean square error = 0.28 m, and percentage bias of +/- 2.5% for both the gauged and ungauged scenarios. Conclusively, it is endorsed that accounting for all the hydrological fluxes in the hsB framework would make it amenable for useful prediction of subsurface flow in ungauged and semi-gauged catchments.
机译：世界范围内大多数地下水集水区的地质水文气象数据有限，限制了有效的地表水和地下水管理。为了改善实际半裸集水区的地下水模型，通过结合农业土地中地表蓄水（SP）的饱和阶段过程，增强了基于直接降雨-补给（DRR）的低维山坡存储Boussinesq（hsB）模型，非季风（干旱）时期的非饱和带过程，山坡含水层与下承压含水层之间的基岩渗漏（BL）通量，以及基于降水强迫，集水区地形和土地的根区水平衡（WB） -使用/土地覆盖动态。通过将流域视为有限的地下水位高程（WTE）数据的半测量和完全未测量（无WTE数据）的流域，对开发的方法进行了现场测试。结果表明，开发的基于WB-SP-BL的hsB模型变体在重现印度东部Kanjhari油藏集水区（125.04 km（2））的6个实验井中观察到的WTE方面表现最佳，并且具有Nash-Sutcliffe模型效率大于67％，均方根误差<= 0.28 m，在已测量和未测量的情况下，偏差百分比为+/- 2.5％。结论是，考虑到hsB框架中的所有水文通量，将使其适用于对未满口和半满口集水区的地下流量进行有用的预测。

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