摘要
在自然界中以倍九日为时间特征的现象很多,如地球自转中有9 d 周期,日月引潮力中有9 d 周期,地磁活动中有9 d 周期,天气韵律中的9 d 周期等等.因之强震发生时间可能被这些因素调制和触发,故亦带上倍九日期的时间特点.这对临震预报是有参考价值的.本文以甘肃及其附近地区强震的发生日期论证了倍九律的客观存在性.
In nature there are many phenomena having the temporal characteristics of multipled nine days,such as the period of nine day in the Earth's rotation,in the solar and lunar tidal forces,in geomagnetic activity,in atmospheric rhythm and so on.In the case,strong earthquake occurrence time may be modulated and triggered by the phenomena,so earthquake occurrence in some degree is characterized by the temporal regularity of multipled nine days.It is valuable for impending earthquake prediction.Based on occurrence dates of strong earthquakes in Gansu Province and neighbour regions the objectivity of multipled nine days have been demonstrated.
出处
《西北地震学报》
CSCD
1999年第4期345-349,共5页
Northwestern Seismological Journal
基金
国家自然科学基金!(49674210)
关键词
临震预报
异年倍九法
强震
地震预报
甘肃
Impending earthquake prediction
Regularity of multipled nine days
Multipled nine days in different year
