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Towards identifying sources of subsurface flow: a comparison of components identified by a physically based runoff model and those determined by chemical mixing techniques.

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<mark>Journal publication date</mark>1992
<mark>Journal</mark>Hydrological Processes
Issue number2
Volume6
Number of pages16
Pages (from-to)199-214
<mark>State</mark>Published
<mark>Original language</mark>English

Abstract

A physically-based semidistributed model, TOPMODEL, is applied to a 340 hectare spruce forested catchment in mid-Wales. the model is calibrated to runoff and the subsurface flow is divided into components of flow identified by depth of origin. in addition, chemical mixing techniques are used to provide a hydrograph separation between acidic soil waters and well buffered deep waters. the short-term variations in the components of flow identified by these two approaches compare well.