SEGJ Technical Conference

Estimation of surface wave phase velocity in the long period range using earthquake data recorded by Hi-net.

Abstract In order to estimate surface wave phase velocity, we applied the semblance analysis and spatial auto correration function analysis to the earthquake records of Hi-net NIED in central Japan. We obtained the phase velocity of Rayleigh and Love waves in the range from about 10 to 30s. The phase velocity using semblance analysis agreed with that of using SPAC method in the range of 10s. Then, we compared the observed phase velocity with the theoretical phase velocity calculated from the three-dimensional crustal velocity model.