基于ArcGIS的Thiessen多边形法计算流域面雨量  

On Basin Area Rainfall Calculation of Thiessen Polygon Method Based on ArcGIS

作　　者：张东锋 万柳明 刘勇进 徐梓斐 Zhang Dongfeng;Wan Liuming;Liu Yongjin;Xu Zifei(Yellow River Conservancy Technical Institute,Kaifeng 475004,Henan,China)

机构地区：[1]黄河水利职业技术学院,河南开封475004

出　　处：《黄河水利职业技术学院学报》2022年第1期24-28,共5页Journal of Yellow River Conservancy Technical Institute

摘　　要：流域面雨量测算在防汛抗洪以及水库拦蓄泄洪等方面发挥着决策性的作用,是防汛部门进行洪水预报和防洪评价的重要依据。以河南省栾川县为研究流域,以高精度Dem栅格地形数据为基础,应用ArcGIS软件进行网格划分,构建了7个雨量站的Thiessen多边形,并计算各雨量站的面积权重,进而计算面雨量。洪水流量模拟结果表明,基于ArcGIS的Thiessen多边形法计算面雨量可以提高计算结果的精确度。Area rainfall plays an important role in flood prevention and control, storage and discharge of reservoirs, and is an important basis for prediction and evaluation of flood control departments. Taking Luanchuan county of Henan province as an example, it discusses the specific steps of using ArcGIS software to grid the high-precision Dem raster topographic data, establish Thiessen polygon, calculate the area weight of each rainfall station, and then calculate the area rainfall. Through the flood flow simulation results, it can be seen that the Thiessen polygon method based on ArcGIS can improve the work efficiency and the accuracy of calculation results.

关 键 词：面雨量 Thiessen多边形 ArcGIS软件 Dem栅格数据 面积权重 洪水流量模拟 

分 类 号：TV873[水利工程—水利水电工程]