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The applicability of two single event models to catchments with different physical characteristics

 

作者: D.A. HUGHES,   A.B. BEATER,  

 

期刊: Hydrological Sciences Journal  (Taylor Available online 1989)
卷期: Volume 34, issue 1  

页码: 63-78

 

ISSN:0262-6667

 

年代: 1989

 

DOI:10.1080/02626668909491309

 

出版商: Taylor & Francis Group

 

数据来源: Taylor

 

摘要:

One topic within the field of deterministic flood modelling that appears to have been relatively neglected is the level of model sophistication that is needed to satisfy the requirements of different model applications. This study considers two isolated event models, both of which can be operated in lumped and semi-distributed format. The results of modelling 174 rainfall-runoff events from 16 medium sized catchments in the USA and South Africa are compared for these models. The lumped models perform as well as the semi-distributed when the rainfall input is relatively spatially uniform. The semi-distributed models show demonstrable improvements for storms with spatially variable rainfall if the rainfall input is adequately defined by the available data. The simpler model appears to perform as well as the more complex one. However, this is achieved at the expense of consistency of parameter values for a single catchment.

 

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