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  李细顺,高登平,刘立申,赵志远,王利兵.基于CM4模型的中国大陆地区地磁场时空分布特征分析[J].震灾防御技术,2018,(1):98-113, DOI:10.11899/zzfy20180109.

基于CM4模型的中国大陆地区地磁场时空分布特征分析
摘要:    本文利用第四代地磁场综合模型(Comprehensive Model 4,CM4),计算了1982-2001年中国大陆地区同一经度链和同一纬度链上地磁台站的磁层源磁场及其感应场、电离层源磁场及其感应场的地磁北向分量X、东向分量Y、垂直分量Z的模型值,分析了各场源磁场随时间和空间的变化特征。结果表明:在时间上,经度链和纬度链台站的磁层源磁场及其感应场均呈现出11年和27天周期性变化。电离层源磁场及其感应场具有明显的季节变化,不同年份相同季节变化形态一致但幅度不同。在空间分布上,经度链和纬度链台站磁层源磁场及其感应场的年变化幅度呈现出不同变化特征,电离层源磁场及其感应场在经度链上变化特征不同,而纬度链台站的数值基本一致。日变化分析显示,磁静日和磁扰日期间,模型数据与台站实测数据变化一致性较好,相关性较高。
作者单位
李细顺 河北省地震局红山基准台, 河北邢台 055350 
高登平 河北省地震局红山基准台, 河北邢台 055350 
刘立申 河北省地震局红山基准台, 河北邢台 055350 
赵志远 河北省地震局红山基准台, 河北邢台 055350 
王利兵 河北省地震局红山基准台, 河北邢台 055350 
关  键  词:CM4磁层源磁场  电离层源磁场  实测数据  感应场  时均值  相关系数
DOI:10.11899/zzfy20180109
基金项目:中国地震局监测、预报、科研三结合课题(160301)
收稿日期:2017-06-16
作者简介:李细顺,女,生于1976年。高级工程师。主要从事地磁观测与研究。E-mail:270886468@qq.com
通讯作者:高登平,男,生于1973年。高级工程师。主要从事地震监测与研究。E-mail:276221635@qq.com
Characteristics of Spatial and Temporal Distribution of Geomagnetic Field in Chinese Mainland Based on CM4 Model
Abstract:      In this paper, based on the comprehensive model4 (CM4), we calculated the latitude and longitude chain stations magnetosphere and its induction magnetic field, ionosphere and its induction magnetic field of the X, Y, Z component from 1982 to 2001 in chinese mainland and also analyzed the change characteristics of the magnetic field with time and space. The results show that the magnetosphere and its induction magnetic field of the longitude chain and latitude chain show periodic variation in 11 years and 27 days. The ionosphere and its induction magnetic field have shown seasonal variation, morphological changes in the same season in which the amplitude is different in the spatial distribution. The annual variation range of the magnetosphere and its induction magnetic field in the longitude chain and latitude chain showed different characteristics. The ionosphere field and its induction magnetic field vary spatially in the longitude chain, but they are about the same of latitude chain station. Diurnal variation analysis showed that the model data is in good consistency with the measured data of the station on the magnetically quiet and disturbed date, and they are highly correlated.
Keywords:  CM4  Magnetosphere field  Ionosphere field  Observatory data  Induction field  The mean time value  Correlation coefficient
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