通海地磁台观测值与IGRF模型值的长期变化分析  

Analysis on the Long-term Variation between Tonghai Geomagnetic Observatory and that Calculated from IGRF Model

作　　者：孙维怀[1] 李琪[2] 白春华[3] 刘瑾[3] 毕青 SUN Weihuai LI Qi BAI Chunhua LIU Jin BI Qing(Tonghai Geomagnetic Station, Earthquake Administration of Yunnan Province, Yunnan Tonghai 652700 Institute of Geophysics, CEA, Beijing 100081 School of Resource Environment and Earth Sciences, Yunnan University, Yunnan Kunming 650091 Earthquake Prevention And Disaster Mitigation Administration of Yuxi City, Yunnan Yuxi 653100, China)

机构地区：[1]云南省地震局通海地磁台,云南通海652700 [2]中国地震局地球物理研究所,北京100081 [3]云南大学资源环境与地球科学学院,云南昆明650091 [4]云南省玉溪市防震减灾局,云南玉溪653100

出　　处：《四川地震》2017年第1期43-47,共5页Earthquake Research in Sichuan

摘　　要：利用云南通海基准地磁台1985年至2011年的年均值资料,研究了通海地磁台观测值与第11代IGRF模型值的长期变化,两者的一致性程度。结果表明:通海地磁台站观测值与IGRF模型值的长期变速率相近、形态一致;两者的差值与太阳黑子数变化存在相关性;各地磁要素的差值均低于IGRF模型的误差水平。According the annual average data of Tonghai geomagnetic observatory from 1985 to 2011, we analyze the long - term variation between geomagnetic data and that calculated from IGRF model and both of level of their con- sistency. Our results show that the long-term variable rate of both sets is similar and their morphology is consistent. The deviation between them is related with variation of sunspot numbers. The geomagnetic element deviation is low- er than the level of error from IGRF model.

关 键 词：通海地磁台 IGRF模型 长期变化 

分 类 号：P318.6[天文地球—固体地球物理学]