摘要
介绍了Topmodel的基本理论,提出一种简单的地形指数ln(a/tanβ)计算方法,该方法分别提取数字高程模型(DEM)网格单元的a和tanβ,对坡度为0的网格单元进行专门处理,然后计算每一个网格单元的ln(a/tanβ)。以沿渡河流域为例,将计算的地形指数用于Topmodel进行洪水模拟计算,得到了比较满意的结果。
A simple algorithm for the calculation of topographic index ln(a/tanβ)is proposed.In the algorithm,a and tanβis extracted separately and the cells,in which the slope is zero,are treated specially so that ln(a/tanβ)can be calculated.The calculated ln(a/tanβ)is used in Topmodel to simulate flood runoff in Yanduhe River basin and the good results are obtained.
出处
《水文》
CSCD
北大核心
2003年第3期16-19,共4页
Journal of China Hydrology
基金
国家自然科学基金资助项目(50099620)
