Institute of Geophysics;
State Seismological Bureau;
Beijing 100081;
PRC;
Department of Geophysics;
Yunnan University;
Kunming 650091;
PRC;
dispersion; curve; of; Rayleigh; wave; group; velocity; matched-filtering; frequency-time; analysis; technique; grid; dispersion; inversion; 3D; S-wave; velocity; structure; geotectonic; division.;