SOME HYPOCENTPAL PARAMETERS OF SEVERAL STRONG EARTHQUAKES SERIES IN INNER MONGOLIA AND THE SHEAR STRESS IN THEIR CORRESPONDING AREAS

For several intermediate strong earthquakes series in Inner Mongolia, the quality factor Q of the medium has been estimated in time domain and the source parameters of foreshoeks and parts of aftershocks and related regionale shear stress have been determined. It can be made out that the source seal of aftershoeks is larger than that of foreshoeks and the regioeal shear stress of foreshocks is relatively higher than that of aftershoecs.