天马台跨断层垂直形变和地震前兆特征分析

利用天马台跨断层定点垂直形变测量资料，对断层现今活动的动态过程进行了分析。结果表明：天马台断层现今活动具有时空不均一性；时间上具有准同步转折及阶段性特点，各阶段的活动速率和方式不同；空间上，断层活动具有位置差异性。E-W测段活动速率最高，S-W测段活动速率最低。讨论了断层活动与地震关系，认为5次准同步转折均与地震有关。

ANALYSIS OF CROSS-FAULT VERTICAL DEFORMATION AND EARTHQUAKE PRECURSOR CHARACTER AT TIANMA

In this paper, using fixed-point cross-fault vertical deformation data at Tianma the dynamic process of current fault activity are analyzed.The results show that the nowadays fault activity at Tianma site manifests itself in space-time unhomogeneity. In the time domain, the activity of faults is characterized by synchro turn in the course of events and in stages that in every stage the activity speed and mode are different. In the space domain, the activity characterized by the positional difference, e.g. in E-W segment is the highest, in S-W segment is the lowest . The relationship between the fault activity and the earthquake is discussed.It is considered that all of the five synchro turn are related to the earthquakes.