ESTIMATING RECENT ACTIVITIES OF THE XIANSHUIHE FAULT ZONE BY EARTHQUAKE ACTIVITY PARAMETERS

In this paper, the recent activities of the Xianshuihe Fault Zone during the period from 1973 to 1982 have been estimated by both spatial scanning and temporal scanning of earthquake activity parameters such as b, N, Balong the fault zone. Some comprehensive indexes of the earthquake parameters for distinguishing different fault segments with variant active characters: light sliding, light stick sliding, stick sliding and locking, as well as for dividing different active stages of the fault zone into short period have been preliminarily summarized. Finally, the changes of activities of this fault zone reflected by earthquake activity parameters since June 1973, and before and after the Daofu Earthquake of magnitude 6.9 occurred in1981 have been preliminarily discussed as well.