THE PREDICTION OF HILLSLOPE FLOW PATHS FOR DISTRIBUTED HYDROLOGICAL MODELLING USING DIGITAL TERRAIN MODELS
THE PREDICTION OF HILLSLOPE FLOW PATHS FOR DISTRIBUTED HYDROLOGICAL MODELLING USING DIGITAL TERRAIN MODELS
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DOI：
10.1002/hyp.3360050106
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发表时间：
1991
影响因子：
3.2
通讯作者：
P. Quinn;K. Beven;P. Chevallier;O. Planchon
中科院分区：
文献类型：
--
作者：
P. Quinn;K. Beven;P. Chevallier;O. Planchon
分布式水文模型预测的准确性必须部分取决于流径的适当规范。本文探讨了一些问题，从栅格数字地形数据的水文预测使用TOPMODEL的流量路径。TOPMODEL根据依赖于流路定义的空间指数预测分布式水分状况。该指数的敏感性流径算法和网格大小的情况下，表面地形是一个很好的指标，当地水力梯度检查。一个策略的情况下，下坡地下水流路径可能会偏离表面地形所示的一个例子中的应用程序。
The accuracy of the predictions of distributed hydrological models must depend in part on the proper specification of flow pathways. This paper examines some of the problems of deriving flow pathways from raster digital terrain data in the context of hydrological predictions using TOPMODEL. Distributed moisture status is predicted in TOPMODEL on the basis of spatial indices that depend on flow path definition. The sensitivity of this index to flow path algorithm and grid size is examined for the case where the surface topography is a good indicator of local hydraulic gradients. A strategy for the case where downslope subsurface flow pathways may deviate from those indicated by the surface topography is described with an example application.