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华北北部历史上曾发生过一些大地震,近年来有些地方地震活动水平较高,也发生过一些大地震。目前和不久的将来会不会发生大地震,这是一个与国计民生紧密相关、亟待解决的重大问题。我们试图从波谱分析测量应力值着手,分析这一地区的应力场和地震危险性。如果测量出某地区应力值较高,同时用其它资料又能确定其应力积累速度较快就可以预言此地区的地震危险性较大,有可能在不久的将来会发生较大地震。
There have been some major earthquakes in the history of northern North China. In some places, the earthquakes have been on a high level in recent years and some earthquakes have occurred. Whether there will be a great earthquake now and in the near future is an important issue to be solved which is closely related to the national economy and the people’s livelihood. We attempted to measure stress values from spectral analysis and analyzed the stress fields and seismic hazards in this area. If the stress value of a certain area is measured high, at the same time it is determined by other data that the stress accumulation rate is faster, the earthquake risk in this area can be predicted to be larger, and a large earthquake may occur in the near future.