... geomagnetic seasonal variation 地磁季节变化 geomagnetic secular variation 地磁长期变化 geomagnetic storm 地磁暴 ...
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According to observation data at geomagnetic stations in Hebei Province from 1986 to 2005, we sum up and analyze the laws of the geomagnetic secular variation in this paper.
利用河北省地磁台1986 ~ 2005年的地磁观测资料，对该地区地磁场长期变化规律进行总结分析。
According to the observation data at Guangzhou geomagnetic observatory from 1958 to 1995, we summarize the laws of the geomagnetic secular variation in Guangzhou geomagnetic observatory.
本文利用1958 ~ 1995年已正式出版的《地磁观测报告》资料对广州地磁台地磁场的长期变化进行分析研究。
With geomagnetic field model records, several kinds of secular variation of geomagnetic dipole moment and the position of the geomagnetic North Pole during the year 0 ~ 2000 a.
利用地磁场模型资料，计算和分析了公元0 ~ 2000年的地磁场偶极子磁矩和地磁北极位置的长期变化。
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