唐山7.8级地震前天津地区的一些地形变特征

SOME CHARACTERISTICS OF DEFORMATION IN TIANJIN REGION BEFORE TANGSHAN EARTHQUAKE(M=7.8)

摘要:

本文认为潘庄流动水准测量和张道口短水准资料是唐山地震的中短期异常,其量值比震中区的形变异常量大,具有“调整单元”的特征。

Abstract:

This paper holds that the measurement data,both from Panzhang fluid levelling and from Zhangdaokou short levelling,are the mid-short term anomalies of Tangshan earthquake.Its anomalous deformation value is lar-get than that in the epicentral area.It is of“stress adjustment element”.