文末，用唐山震中区地下水位异常资料，讨论了与震源演化过程的关系。
Finally, the relationship between Tangshan groundwater level anomalies in epicentral area and focal evolution process is discussed.
目前进行的地震危险性分析计算中，潜在震源区范围和震级上限的确定过程中存在很大的不确定性。
In seismic hazard analysis computation, there is much uncertainty in the process of defining latent focal region and upper magnitude limit.
本文采用地质构造、地震活动图象、震源机制资料综合分析方法，对唐山地震序列主要的构造过程进行研究。
In this paper, the main tectonic process of the Tangshan earthquake sequence was studied by comprehensive analysis of geological structures, seismicity pattern and focal mechanism data.
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