In this paper,we make an effort to study the feasibility to assess magnitudes of maximum potential earthquakes in sub-areas of moderately and weakly active faults in eastern China mainland by using parameters of frequency-magnitude relationship,and develop the corresponding methodology.

For studying the coorelation between the crustal deformation and fault movement caused by the reservoir impoundment the tilt data of two fixed deformation stations(Zhouping and Yichang) are analysed and processed with wavelet transformation method.

As regards the fault movement,in the west,the faults are predominantly normal and in the east the thrust faults are the most.

The deformation fields raised by fault movement and a general inverse algorithm are discussed.

This paper presents the quantitative analysis of fault activity intensity and regularity of Guantao formation and the systematic study of its effect on controlling the hydrocarbon accumulation.

The available geological and geophysical methods fail to estimate variations of fault activity in real time intervals, such as months, years or decades.

The component,arrangement and technical indexes of the field continuous monitoring system for fault activity are intruduced.

The application of RS in the research of active fault;

Microscopic observation method for active faults in soft sediments.;

Microstructural and microsedimentologic observations of active faults in loess area.;

Tectonic earthquakes are closely related to active faults.

However,active faults are usually developed in soft sediments,and sometimes do not leave any macroscopically observable trace.

By the use of the previous information of M\-L 612 earthquake in the west of Beijing in 1730 together with the data of drills,electromagnetism and gravity,the Qinglongqiao\|Qiliqu and Shahe active faults are identified for the first time.