Schilling Oliver S, Park Young-Jin, Therrien René, Nagare Ranjeet M
Aquanty Inc., Waterloo, Ontario, N2L 5C6, Canada.
Department of Geology and Geological Engineering, Université Laval, Pavillon Adrien-Pouliot, Québec, QC, G1V 0A6, Canada.
Ground Water. 2019 Jan;57(1):63-74. doi: 10.1111/gwat.12841. Epub 2018 Dec 6.
For the simulation of winter hydrological processes a gap in the availability of flow models existed: one either had the choice between (1) physically-based and fully-integrated, but computationally very intensive, or (2) simplified and compartamentalized, but computationally less expensive, simulators. To bridge this gap, we here present the integration of a computationally efficient representation of winter hydrological processes (snowfall, snow accumulation, snowmelt, pore water freeze-thaw) in a fully-integrated surface water-groundwater flow model. This allows the efficient simulation of catchment-scale hydrological processes in locations significantly influenced by winter processes. Snow accumulation and snowmelt are based on the degree-day method and pore water freeze-thaw is calculated with a vertical heat conduction approach. This representation of winter hydrological processes is integrated into the fully-coupled surface water-groundwater flow model HydroGeoSphere. A benchmark for pore water freeze-thaw as well as two illustrative examples are provided.
对于冬季水文过程的模拟，流量模型的可用性存在差距：人们要么在以下两者之间做出选择：（1）基于物理的、完全集成的，但计算量非常大的模型；要么（2）简化的、分区的，但计算成本较低的模拟器。为了弥合这一差距，我们在此展示了将冬季水文过程（降雪、积雪、融雪、孔隙水冻融）的高效计算表示集成到一个完全集成的地表水-地下水流动模型中。这使得能够在受冬季过程显著影响的地点高效模拟流域尺度的水文过程。积雪和融雪基于度日法，孔隙水冻融则采用垂直热传导方法计算。这种冬季水文过程的表示被集成到完全耦合的地表水-地下水流动模型HydroGeoSphere中。提供了孔隙水冻融的一个基准以及两个示例。
