河北地区近年地磁场变化特征  

Geomagnetic Field Varivation Characteristics in Hebei Area in Recent Years

作　　者：董博[1,2] 纪春玲 张环曦[1] 周安聘[1] 茅远哲 唐存智 张尚清 

机构地区：[1]河北省地震局,石家庄050021 [2]河北地质大学,石家庄050031

出　　处：《华北地震科学》2017年第4期22-28,共7页North China Earthquake Sciences

基　　金：2017年河北省地震局地震科技星火计划项目(DZ20170510065)

摘　　要：通过分析河北及周边10个地磁台2008—2016年的各分量年均值数据和年变率曲线变化形态,发现3个分量均呈单调变化,Z分量和F总场年变率从2008年开始均呈现出上升变化态势;利用克里金插值法对所研究区域地磁场变化特征进行插值计算,分析结果认为:在该研究区域内随着时间的递增,3个分量等值线均逐渐由北向南缓慢的迁移。该研究对于了解近年来河北及附近区域地磁场变化规律有积极指导意义。In the paper,the annual mean data and the annual variation curve of the 10 geomagnetic stations in Hebei and the surrounding areas from 2008 to 2016 are analyzed.The analysis shows that：the three components show monotonic change;the total annual change rate of the Z component and F component from the beginning of 2008 show an upward trend.Then,the characteristics of magnetic field are studied using Kriging interpolation and the results indicated that：in the study area,the three components of the isoline are slowly moving from north to south as time goes on.The study has great significance to understand the geomagnetic field variation in Hebei and its adjacent areas in recent years.

关 键 词：地磁场 年变率 克里金插值法 河北 

分 类 号：P315.7[天文地球—地震学]