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用83个地磁台的资料总结我国大陆地区发生的十次大震震例,发现震前垂直分量极小值出现的时间(低点时间)在空间分布上存在明显的异常。这种区域性的异常和强震的发生有一定的相关性。
Based on the data from 83 geomagnetic stations, this paper summarizes the ten earthquakes that occurred in the Chinese mainland and found that there is a significant spatial anomaly in the time (low time) of the minimum value of the vertical component before the earthquake. This regional anomaly is related to the occurrence of strong earthquakes.