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| | Abstract | | In order to enhance the accuracy of the S-wave velocity structures, the Love-wave dispersive characteristics can play a significant role to constrain the model parameters. But examples of the Love-wave detection from microtremor array measurements have been found in very limited articles, compared with the Rayleigh-wave detection. In this study, we successfully detected phase velocities of Love-waves as well as those of Rayleigh-waves from microtremor array measurements at Takasu area in Kochi city. As we used eight seismometers simultaneously to compose two circular arrays with radii of 50 m and 100 m, we derived phase velocities of Love-waves and Rayleigh-waves from three different approaches: the frequency-wavenumber (FK) method, the spatial auto-correlation (SPAC) method, and the two radius (TR) method. Results from these three methods are reported and discussed. |
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