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.
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。
The significance of the method proposed by the authors to analyze source fault by using the data of focal distribution and mechanism of an earthquake sequence has been discussed.
文中讨论了作者所提出的利用地震序列的震源分布和震源机制资料分析震源断层的意义。
Some information data about the earthquake are outlined, including basic parameters, focal mechanism, damage, casualties, emergency rescue and background of earthquake occurrence.
文章对该震的基本参数、震源机制、破坏伤亡、救援和发震背景等作了概述。
Applying this method to earthquake sequence, the events with similar focal mechanism can be grouped, and temporal average correlation coefficient curve of earthquake sequences can be obtained.
据此对地震序列事件进行聚类分组以及计算序列事件的滑动平均相关系数时序曲线。
The focal mechanism of the M4.9 earthquake shows that it belongs to strike slip type that is similar to the M6.4 earthquake in 1969.
本次4.9级地震作出的震源机制解显示为走滑型，与1969年主震的情况较为类似。
The focal mechanism of the M4.9 earthquake shows that it belongs to strike slip type that is similar to the M6.4 earthquake in 1969.
本次4.9级地震作出的震源机制解显示为走滑型，与1969年主震的情况较为类似。
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