摘要
提取河道不同时期、不同位置断面可了解河流冲淤与河势。由河道点数据通过Spline插值生成DEM,利用ISurface接口提取断面线生成断面,根据断面面积变化进行冲淤分析。与长江澄通段实际河势对比显示,河段四处提取的断面能很好地反映河势变化。
Extracting different historical period cross-sections at different locations could capture river flushes and siltation.This paper achieved creating DEM by the river point data through the Spline interpolation,extracting the cross section lines by using the ISurface interface to generate sections,implementing flushes and siltation analysis by copulating the cross-sections' areas.The shape of cross-sections,extracted at different locations in the Yangtze River,according to the actual style of river potential evolution,react the river situation very well.
出处
《地理空间信息》
2011年第2期120-121,124,共3页
Geospatial Information
基金
国家自然科学基金资助项目(40901191)
