【摘要】 在TOPMODEL模型理论基础上,设计了一个分单元处理产流和汇流过程的分布式水文模型。该模型分单元计算地形指数和模拟产汇流过程,并通过引入Nash地貌瞬时单位线进行单元汇流演算。最后,用模型对一个流域的产汇流过程进行了模拟并和实测的径流量做了比较,结果表明此模型合理具有较高的精度。更多还原

【Abstract】 A distributed hydrological model is presented based on the TOPMODEL. In the presented model, the topographic index and runoff yield/travel are calculated according to each grid of Digital Elevation Models (DEM), and the runoff travel is modeled by NASH Unit hydro-graph. At last, this model is applied in a watershed as a case study. Compared with the observed hydrological processes, it is found that this model shows high precision in runoff simulating.更多还原