SEGJ Technical Conference

Microtremor observations near KiK-net Eiheiji station for estimation of seismic ground motion.

Abstract We constructed a 3D subsurface structural model using microtremor data around KiK-net FKIH01 site. We applied a joint inversion method of phase velocity of Rayleigh wave and horizontal-to-vertical spectra of surface wave for estimating of a 1D S-wave velocity structure of sedimentary layers. Depths of suface layer (Vs93m/s) are 0.2 m to 7 m. The inverted S-wave velocity structure at KiK-net FKIH01 site corresponds with the transfer function between 100m depth and 0m depth well.