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 consistency.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 lower than the level of error from IGRF model.
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