仇知雨,梁忠民,赵建飞,段雅楠,胡义明

• 1:河海大学水文水资源学院

摘要(Abstract)：

选用反距离加权法(IDW)、局部多项式法(LPI)、普通克里金法(OK)、经验贝叶斯克里金法(EBK)、协克里金法(CK)共5种方法，进行场次降雨空间插值效果对比研究。分析不同降雨量等级(12 h、24 h时段下小雨、中雨、大雨、暴雨)和时间尺度(场次、24 h、12 h、6 h、3 h、1 h)对空间插值精度的影响，确定不同情况下适用的场次降雨空间插值方法。以安徽屯溪流域为对象，对2010—2018年23个雨量站的汛期逐时降雨量进行了空间插值验证研究，结果表明：(1)随着降雨量等级的增大，各方法插值结果的精度均不断提升；(2)随着时间尺度的减小，降雨数据空间自相关性减弱，各方法插值效果逐渐变差；(3)整体而言，不同降雨量等级和时间尺度下，考虑高程因素的CK法插值效果最优，EBK法、LPI法次之，OK法和IDW法最差。研究认为，对屯溪这类山丘区流域的场次降雨空间插值问题，考虑高程因素影响的协克里金法更为适合。

关键词(KeyWords)： 降雨空间插值;交叉验证;空间自相关;降雨量等级;时间尺度

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金重点项目(41730750)

作者(Author): 仇知雨,梁忠民,赵建飞,段雅楠,胡义明

DOI: 10.13928/j.cnki.wrahe.2022.11.006

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