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| 基于DEM的降雨空间插值方法研究 | |
| 引用本文： | 熊一然,黄兵,胡铁松.基于DEM的降雨空间插值方法研究[J].节水灌溉,2011(12):53-56. |
| 作者姓名： | 熊一然 黄兵 胡铁松 |
| 作者单位： | 1. 湖北省武汉市第二中学,武汉,430010 2. 湖南省水利水电勘测设计研究总院,长沙,410007 3. 武汉大学水资源与水电工程科学国家重点实验室,武汉,430072 |
| 基金项目： | 国家自然科学基金项目(50739003,50979073); 博士点基金项目(20100141110061) |
| 摘 要： | 提出了一种基于DEM修正的Co-kriging（MCK）法，该方法在假设降雨和高程的数学期望满足一定比例的基础上，使得降雨同高程权重系数之和为1，从而提高了高程在降雨估值中的作用。滦河流域月降雨空间插值研究表明：MCK法得到的降雨插值精度最高。同时，当降雨高程相关系数大于0．71时，采用MCK法明显提高插值精度。 |
| 关 键 词： | 空间插值 修正的Co—kriging法 DEM 协克里金 |
Study on Spatial Interpolation of Rainfall Based on DEM |
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| XIONG Yi-Ran,HUANG Bing,HU Tie-Song.Study on Spatial Interpolation of Rainfall Based on DEM[J].Water Saving Irrigation,2011(12):53-56. | |
| Authors: | XIONG Yi-Ran HUANG Bing HU Tie-Song |
| Institution: | XIONG Yi-Ran1,HUANG Bing2,HU Tie-Song3(1.Hubei Wuhan No.2 Middle School,Wuhan 430010,China,2.Hunan Hydro & Power Design Institute,Changsha 410007,3.Wuhan University,Wuhan 430072,China) |
| Abstract: | This paper presents a modified Co-kriging based on DEM(MCK),which could increase the impact of elevation in the spatial interpolation of rainfall by making the sum of the weight coefficient of the rainfall and elevation equaling to 1 based on the hypothesis that there has a certain ration between the mathematical expectatioin of the rainfall and elevation.This technique is illustrated by using monthly rainfall observations in Luan River basin.The results show that smaller prediction errors are obtained by M... |
| Keywords: | spatial interpolation modified co-kriging method DEM co-kriging |
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