THE CHARACTERISTICS OF THE ACTIVITY OF MINOR EARTHQUAKE OF LINXIAN AND ITS RELATION TO THE ACTIVITY OF XINGTAI EARTHQUAKE

The activity of minor earthquake of Linxian has characteristies of high frequenc-y, grent undulation, strong rhythm;minor magnitude,shallow focus.high intensity, minor range of activity;high b-value,quick attenuation of sub-sequence, a long duration of the entire process;lower Q-value,Various types etc, Its variation of frequency is the same as the seismicity of the region of Xingtai strong earthquake, and lagged behind about 5-20 months.This has proved that the activity of minor earthquake of Linxi-an is induced by the seismicity of the region of Xingtai strong earthquake.Because its activity is always behind the seismicity of the region,it can't be as a "seismicity precussory window" to monitor earthquake.Finally, the environment of the massif of minor earthquake of Linxian area is discussed.It has been considered that the Linxian basin is a slip-away fractured block extending to the east under the main control of Rencun-Taoyuan fault.Also the triggering condition has been discussed from teclonic.structure ol rock and the activity of pressure-bearing ground water at depth etc.