On TOPMODEL's ability to simulate groundwater dynamics
On TOPMODEL's ability to simulate groundwater dynamics
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论TOPMODEL模拟地下水动态的能力
DOI：
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发表时间：
1999
期刊：
影响因子：
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通讯作者：
J. Seibert
中科院分区：
文献类型：
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作者：
J. Seibert
TOPMODEL方法已广泛用于水文集水建模。用地形指数表示水文学中的地形效应，可以用一种简单的方法模拟地下水位的分布。然而，TOPMODEL模拟的地下水位（或地表湿度）的空间变化的验证在大多数情况下并不成功。在本文中，TOPMODEL的预测当地地下水位的能力进行了更广泛的讨论。本文的目的是阐明TOPMODEL理论所需的假设，研究这些假设的合理性以及这些假设所产生的误差。以瑞典不同集水区的地下水位测量值为例。最有问题的假设是那些稳定状态的流量和空间均匀补给地下水，它的结论是，这些基本的假设支撑的TOPMODEL方法阻碍了地下水位的空间和时间动态的正确模拟。
The TOPMODEL approach has become widely used for hydrological catchment modelling. The representation of topographic effects in hydrology by a topographic index allows the simulation of distributed groundwater levels in a simple way. However, validation of spatial variation of groundwater levels (or surface wetness) simulated by TOPMODEL has not been successful in most cases. In this paper, TOPMODEL's ability to predict local groundwater levels is discussed more generally. The aim of this paper is to clarify the assumptions needed to derive the TOPMODEL theory, to investigate how reasonable the assumptions are and the errors that are generated by these assumptions. Measured groundwater levels from different catchments in Sweden were used as examples. The most problematic assumptions were those of steady state flow rates and spatially uniform recharge to the groundwater, and it was concluded that these fundamental assumptions underpinning the TOPMODEL approach obstruct a correct simulation of the spatial and temporal dynamics of the groundwater table.