STUDY ON THE PERIODIC STRUCTURE OF EARTHQUAKE ACTIVITY IN ZHANGJIAKOU REGION WITH WAVELET TRANSFORMATION

The seismic activity in Zhangjiakou region shows, there is a complicated interactional relation between the seismic activities on each earthquake belt in North China area, and its relation with potential seismic risk needs to be attention.Here we studied periodical structure in earthquake time series with wavelet transforma-tion, and discussed its application in earthquake prediction.It can provide a reference for moderate long term prediction.