• The temporal variation of it has secular change, seasonal variation, irregular variation, and other scales variation.

    重力场时变长期变化季节性变化不规则变化其他多尺度的变化。

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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1986 ~ 2005年的地磁观测资料,对地区地磁场长期变化规律进行总结分析

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  • 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,计算分析了公元0 ~ 2000年地磁场偶极子磁矩地磁北极位置长期变化

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  • 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年已正式出版地磁观测报告》资料广州地磁台地磁场的长期变化进行分析研究。

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  • No anomalous local secular geomagnetic variation has been found in the area.

    测区内未发现局部地磁长期变化异常

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  • Theory, observation and application of the geomagnetic polarity reversal and secular variation, magnetostratigraphy;

    地磁场倒转长期理论观测应用以及磁性地层学

    youdao

  • Theory, observation and application of the geomagnetic polarity reversal and secular variation, magnetostratigraphy;

    地磁场倒转长期理论观测应用以及磁性地层学

    youdao

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