地震地磁观测与研究2026，Vol.47Issue(1)：21-28,8.DOI:10.3969/j.issn.1003-3246.2026.01.004
基于空间插值方法的2020年唐山古冶MS5.1地震仪器烈度影响场分析
Analysis of instrument intensity influence field of the 2020 Tangshan Guye MS5.1 earthquake based on the spatial interpolation method
摘要
Abstract
On July 12,2020,an MS5.1 earthquake occurred in Guye District,Tangshan City,Hebei Province.We selected strong-motion and intensity observation data from 363 seismic stations(including 207 strong-motion and 156 intensity stations)to conduct the study.After preprocessing steps such as instrument performance verification,baseline correction,and digital filtering,the accuracy of extracting key parameters,including peak ground acceleration(PGA)and peak ground velocity(PGV),improved significantly.By employing spatial interpolation methods,we systematically analyzed the technical path and effect of the seismic instrument intensity influence field.Through comparative analysis of the application effects of the inverse distance weighting method(IDW)and ordinary kriging(OK)in the estimation of seismic intensity distribution,it was found that the IDW method can quickly capture the violent changes in seismic motion in areas with dense station networks,but it is susceptible to uneven data distribution.The ordinary kriging method,by quantifying spatial autocorrelation,exhibits higher accuracy and stability in scenarios with uneven data or complex spatial structures,and its interpolation results are more consistent with those of a macroscopic seismic intensity survey.This study provides a scientific basis for rapid earthquake disaster assessment and suggests that the two methods can be applied together to enhance analysis efficiency and accuracy in seismic intensity assessment.关键词
唐山古冶 MS5.1 地震/仪器烈度/空间插值/反距离权重法/普通克里金法Key words
Tangshan Guye MS5.1 earthquake/instrumental intensity/spatial interpolation/inverse distance weighting/ordinary Kriging引用本文复制引用
刘仲韬,赵志远,钱亮..基于空间插值方法的2020年唐山古冶MS5.1地震仪器烈度影响场分析[J].地震地磁观测与研究,2026,47(1):21-28,8.基金项目
中国地震局地震监测、预报、科研三结合项目(项目编号:CEA-SJH-202601009) （项目编号:CEA-SJH-202601009）
河北省地震局科技星火计划(项目编号:DZ2024112600012) （项目编号:DZ2024112600012）
