【摘要】 DEM是目前用于流域地形分析的主要数据,在流域地形分析及水系构建等方面形成了比较成熟的算法。基于DEM的水文模拟技术的应用给传统的水文模拟方法带来了根本性的变化。以三峡库区晏家河小流域为例,应用最新引进的WMS专业水文处理软件,结合Arc/Info,ArcView地理信息系统工具,在1∶1万DEM基础上生成河网水系,确定流域边界并进行子流域的划分。在生成数字流域的基础上,采用WMS嵌入的HEC-1模型进行降雨径流模拟研究。更多还原

【Abstract】 DEM is the main data source that is used in watershed analysis. There are many mature algorithms in watershed analysis and they can be used to delineate the drainage networks. Applications of the methods based on DEM make significant innovation in hydrological simulations.The Yanjia River was selected as study region,WMS6.1, a GIS hydrological tool, which is introduced to China recently, was used to develop the digital rainfall-runoff model, and other GIS tools such as Arc/info, ArcView were also used to deal with the data. Based on 1∶10000 DEM, the drainage network was derived, the basin boundary was confirmed, and the basin was divided into six sub-basins. Based on digital basin, HEC-1 model, a part of hydrological models in WMS, was selected to simulate the rainfall-runoff process.更多还原