摘要
为对比不同变差模型在降水量空间插值中的优劣,对淮北平原185个雨量站的2009年年降水观测数据,分别用不同理论变差模型与实验变差值拟合,然后选择普通克里格法进行降水场的变异分析及插值。经交叉验证法等多指标对插值结果检验后,证实了区域降水量具有明显的空间相关性,且三种拟合后变差模型的差异主要在短距离(h<10km)内。同时在现有站网布设方式下,三种模型插值结果并无显著差异,但以球状函数拟合插值结果整体效果最佳。
In order to compare the advantages and disadvantages of different variogram models of rainfall spatial interpolation studies, rainfall spatial field variation and interpolation were analyzed by using ordinary Kriging method with the samples of annual rainfall in Huaibei Plain. Through comparing the results of the interpolation of different variogram models with cross-validation and other methods,it is indicated that the spatial correlation of Huaibei Plain is stronger, and there is no significant differences between the results of the different variogram models, the results of spherical model method can obtain the better integer effect under the existing rainfall station network.
出处
《水文》
CSCD
北大核心
2012年第2期49-53,共5页
Journal of China Hydrology
基金
安徽省高等学校自然科学重大基金(ZD2009908)
