SEGJ Technical Conference

Estination of S-wave velocity structures at Oshu City, Iwate Prefecture by using microtremor array survey, Part 2

Abstract Microtremor array survey were carried out at five sites in Oshu City, Iwate Prefecture. S-wave velocity structures were estimated by using GA inversion technique based on both dispersion curves of phase velocitiy and peak and trough periods of microtremor H/V. The results show that the estimated basement depths were gradually decreasing from the southwest area to the northeast area.