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本文从弹性回跳学说出发,介绍一种分析方法。以唐山大地震为例,处理了1969—1975年唐山市周围区域的水准复测资料。结果表明,震前在发震断裂两侧及其两端存在明显的垂直应变积累。
Based on the theory of elastic rebound, this paper introduces an analysis method. Taking the Tangshan earthquake as an example, the data of level re-measurement in the area around Tangshan City from 1969 to 1975 was processed. The results show that there are obvious vertical strain accumulations on both sides of seismogenic fault and its both ends before the earthquake.