邢台余震频度增高及以后发生的华北强震

FREQUENCY OF AFTERSHOCKS OF THE 1966 XINGTAI EARTHQUAKE AND THE SUBSEQUENT STRONG EARTHQUAKES OF NORTH CHINA

摘要: 本文就1966年邢台地震的余震频度的增高出现于华北诸大震之前的事实, 讨论了余震活动区可以作为监视区域构造应力场增减情况的“窗口”, 邢台余震频度增高可以作为华北地区大震活动的前兆.

Abstract: A discussion on the observed fact that the frequency of aftershocks of the 1966 Xingtai Earthquake increased before the occurrences in North China of a number of strong earthquakes subsequent to 1966, was made. Thus the activity of the Xingtai aftershocks may be considered as a "window" to monitor the increase of tectonic stress, taken North China as a whole and the rise of the frequency of Xingtai aftershocks, a precursory phenomenon for North China earthquakes of greater magnitudes.