摘要
研究了地磁场综合模型CM4和国际参考地磁场模型IGRF12与中国部分地磁台站年均值的一致性,并分析CM4与IGRF12模型之间的差异,结果表明,模型值与台站观测值的差值不随台站经纬度的改变而呈现规律性变化,两种模型值与台站观测值差值的两种变化形态相差较大;同一台站,同一地磁分量,两种地磁场模型的误差水平基本相当;同一地磁分量,不同台站间的实测年均值与两种模型计算值的差值相差较大,反映出台站所在位置地壳磁异常的差异。
In this paper,the consistency of CM4 and IGRF12 with the annual mean values of some geomagnetic stations in China is studied,and the differences between CM4 and IGRF12 are analyzed.The results show that the difference between CM4 and IGRF12 does not change regularly with the change of longitude and latitude of the stations,and the difference between CM4 and IGRF12 is quite different.For the same station and the same geomagnetic component,the error levels of the two geomagnetic field models are basically the same.While for the same geomagnetic component,the difference between the measured annual mean values of different stations and the calculated values of the two models is large,which reflects the difference of crustal magnetic anomalies at the stations.
作者
孙澎涛
陈立强
孙贵成
张玉林
SUN Peng-tao;CHEN Li-qiang;SUN Gui-cheng;ZHANG Yu-lin(Chengde central seismic station of Hebei Earthquake Agency, Chengde, Hebei 067000, China)
出处
《山西地震》
2021年第2期15-20,共6页
Earthquake Research in Shanxi
基金
河北省地震局科技星火计划面上项目(DZ20140708016)。
关键词
地磁测量
地磁场模型
一致性
Geomagnetic measurements
Geomagnetic field model
Consistency
