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本文通过处理湖北省地磁台网三年来磁偏角D分量资料,给出了不同台距的r,s,b相关参数值;证明了在正常情况下r,s,b值的大范围空间稳定性。在此基础上提出了震磁效应的分辨限度L=■-0.5■,并以L作为基线来识别异常。结果表明:近数年来湖北地区地磁场没有异常变化,同时也证实了湖北省地磁台网的连续观测资料是可靠的,具有一定的监测能力。
In this paper, by processing the magnetic declination D component data of geomagnetic network in Hubei province for three years, the values of r, s and b for different station distances are given. It is proved that the spatial distribution of r, s and b values is stable under normal conditions Sex. On this basis, the resolution limit of the seismic magnetic effect L = -0.5 ■ is proposed, and L is used as a baseline to identify the anomaly. The results show that there is no abnormal change of the geomagnetic field in Hubei in recent years, and it is also confirmed that the continuous observation data of the geomagnetic network in Hubei Province is reliable and has certain monitoring ability.