《Hydrological processes》杂志刊登“Panday和Huyakorn地表-地下水文测试案例：内部流动动力学分析”

作者：Amy M. Gaukroger and Adrian D. Werner

刊物：《Hydrological processes》，2011年，第25卷，13期

关键词：地表-地下水文；坡面流；流域水文模型；建模集成；MODHNS；测试

摘要： 以往对地表-地下水文模型的研究中，多使用Panday和Huyakorn（P&H）倾斜V型排水测试（Panday S, Huyakorn PS. 2004. A fully coupled spatially distributed model for evaluating surface/subsurface flow. Advances in Water Resources 27: 361–382）以显示内部代码可比性。P&H测试可以用来评估大尺度水文过程的模拟模型，然后用集水区出流水文过程来验证代码的一致性。因此需要一个更全面的地表-地下水文的P&H评估俺案例。本研究探讨了内部排水情况下的P&H运行情况，添加了流域模拟器MODHMS。过程中产生的水流能够被新模型很好的模拟，包括分离坡面流（OLF）和地下水泄流。研究结果提出了非物理流的问题以及修改P&H的建议，包括修改粗糙度和河道切口来弥补缺点。修改后，P&H系统可以更加合理的转化与分离坡面流与径流，以增加地下水泄流（原情况的6.5%~0.5%）。虽然改变了内部流过程，但能够获得几乎相同的出流情况，表明综合评价水文模拟模型时，考虑和比较地表-地下水文过程中的内部流动是很重要的。

On the Panday and Huyakorn surface–subsurface hydrology test case: analysis of internal flow dynamics

Authors: Amy M. Gaukroger and Adrian D. Werner

Journal: Hydrological processes EISCI, 2011, 25(13), 2085-2093

Key words: surface–subsurface hydrology; overland flow; catchment modelling  integrated hydrology model; MODHMS; test

Abstract: A number of previous studies using models of integrated surface-subsurface hydrology have adopted the Panday and Huyakorn (P&H) tilted V-catchment test case (Panday S, Huyakorn PS. 2004. A fully coupled spatially distributed model for evaluating surface/subsurface flow. Advances in Water Resources 27: 361–382) to show inter-code comparability. The P&H test case is used to evaluate models that simulate a broad range of hydrological processes, and yet only the catchment outflow hydrograph has been presented as verification of the consistency between codes. Therefore, a more comprehensive evaluation of the surfacesubsurface hydrology of the P&H case is needed. This study explores the internal catchment functioning of the P&H case, using the popular catchment simulator MODHMS. The processes leading to streamflow generation in the model are illustrated, including separation of overland flow (OLF) and groundwater discharge to the stream. The results identify non-physical flow processes due to the problem set-up, and modifications to the P&H case are suggested that include changes to stream roughness and incision of the stream channel to overcome these shortcomings. A modified P&H case produced more plausible transfers between OLF and the stream, and an increased groundwater discharge to the stream (6.5% of streamflow in the modified case compared to 0.5% in the original case). Despite changes to internal flow processes, near-identical outflow hydrographs were obtained, showing the importance of considering and comparing internal flow processes when using surface-subsurface hydrology test cases to evaluate integrated hydrological simulators. Copyright ? 2011 John Wiley & Sons, Ltd.

原文链接： http://d.wanfangdata.com.cn/NSTLQK_NSTL_QKJJ0225163794.aspx