Institute of Geophysics;
China Seismological Bureau;
Beijing 100081;
China;
Center for Seismic Data and Information;
China Seismological Bureau;
Beijing 100045;
China;
Seismological Bureau of Shandong Province;
Ji'nan 250014;
China;
Institute of Crustal Dynamics;
China Seismological Bureau;
Beijing 100085;
China;
digital; seismic; record; spectral; analysis; wavelet; comprehensive; discrimination.;