The distribution of earthquake intervals can be simulated by a normal probability function. Besides, the ground displacement at the distance of reducing seismic risk was given by the elastic dislocation theory.

In this paper, accrding to the elastic dislocation theory and the inversion method of the fault movement parameters with prior information, the design of GPS monitoring points in a fault area and its impact on the results of the inversion of the fault movement parameters are investigated by the numerical test, and the effect of detecting the fault movement for GPS points is tested. The impact of the random error and the gross error in the GPS points on detecting the fault activies are discussed.

Furthermore,the boundary energy vs misorientation dependence andserveal parameters in the grain boundaries of the oxide ceramics were inferred and calculatedby the elastic dislocation theory. The boundary energy is considered to be composed of theenergy of grain boundary core and the elastic energy associated with the strain field of theboundary. By modeling of [001] and [111]tilt boundaries,the relationship has been verifiedto be valid.

The modeling method of fracture prediction by using elastic dislocation theory has been discussed, and application of elastic dislocation theory to predict the fracture development orientation, mode and density of faulted blocks in Gullfaks oilfield in North Sea was conducted.

The changes on static stress, acquired according to the half-space elastic dislocation theory, can exist on fault plane for a long time until the next strong earthquake.

The mechanism of earthquakes is presented by use of the elastic dislocation theory.

Stress field caused by the rectangle fault in the semi-infinite elastic medium is calculated on the basis of the elastic dislocation theory.

According to elastic dislocation theory, an earthquake can be modeled by shear faulting.

The Tonghai-Shiping area is located in South Yunnan proyince, Many large historical earthquakes occurred in the area. It is important to study seismotectonies here.In this paper, the method of geomorphological analyses, the surface vertical tectonic deformation since pleistocene in the area is obtaine, and right iateral displacement, 5KM and average movement velocity 5mm/yr are (calculated trom the vertical deformation by elastic dislocation theory. The results show that present and quaternary tectonic...

The Tonghai-Shiping area is located in South Yunnan proyince, Many large historical earthquakes occurred in the area. It is important to study seismotectonies here.In this paper, the method of geomorphological analyses, the surface vertical tectonic deformation since pleistocene in the area is obtaine, and right iateral displacement, 5KM and average movement velocity 5mm/yr are (calculated trom the vertical deformation by elastic dislocation theory. The results show that present and quaternary tectonic stress fields are same, their principle compression axes are NNW-SSE direction.The average interval of earthquakes as large as magnitude 7along the Qujiang fault is about 400 years. The data of earthquakes in this area show that there had been a gap of the large earthquake along the fault during 400 years before the large Tonghai earthquake.

After a large earthquake took place, the accumulated stress and strain in focus and its neigborhood was released quite fully, so that the parallel faults in a centain range couldn't accumulate enough stress and strain to result in a large earthquake for some time. It means that a large earthquake has an effect of reducing seismic risk of in some distance for some time. So it is important to determine the distance and buration of reducing seismic risk. This paper, on the basis of the large earthquakes occured...

After a large earthquake took place, the accumulated stress and strain in focus and its neigborhood was released quite fully, so that the parallel faults in a centain range couldn't accumulate enough stress and strain to result in a large earthquake for some time. It means that a large earthquake has an effect of reducing seismic risk of in some distance for some time. So it is important to determine the distance and buration of reducing seismic risk. This paper, on the basis of the large earthquakes occured in mainland of China, calculated the earthquake intervals for different length of time, From these statistial data the dominant interval and the optimal distance of reducing seismic risk were got. The dominant interval and the optimal distance of reducing seismic risk are inversely proportional to length of time. The distribution of earthquake intervals can be simulated by a normal probability function. Besides, the ground displacement at the distance of reducing seismic risk was given by the elastic dislocation theory.

In this paper, accrding to the elastic dislocation theory and the inversion method of the fault movement parameters with prior information, the design of GPS monitoring points in a fault area and its impact on the results of the inversion of the fault movement parameters are investigated by the numerical test, and the effect of detecting the fault movement for GPS points is tested. The impact of the random error and the gross error in the GPS points on detecting the fault activies are discussed.