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タイトル: | Evaluation of Deep S-wave Velocity Profiles in Sagaing City, Myanmar from Long-Period Microtremor Array Records |
著者: | AUNG, Phyoe Swe KAWASE, Hiroshi MATSUSHIMA, Shinichi NAGASHIMA, Fumiaki NAING, Tun THANT, Myo |
著者名の別形: | 川瀬, 博 松島, 信一 長嶋, 史明 |
キーワード: | Array measurement Phase Velocity Shear Wave Velocity MHVR pEHVR EMR |
発行日: | Sep-2018 |
出版者: | 京都大学防災研究所 |
誌名: | 京都大学防災研究所年報. B |
巻: | 61 |
号: | B |
開始ページ: | 272 |
終了ページ: | 281 |
抄録: | For quantitative prediction of strong ground motions, we desperately need precise information of shear wave (S-wave) velocities down to the seismological bedrock for site effect estimation. To determine the deep S-wave velocity profiles in Sagaing City of Myanmar, we have used both single-station and array methods for microtremor records. In this study, we have conducted five microtremor array sites and 100 sites for singlestation measurement. In order to estimate the S-wave velocity profile down to the seismic bedrock (Vs = 3.0 km/s), we extended the radii of the arrays sequentially and we obtained the Rayleigh wave phase velocity in the long-period range. After that, one dimensional S-wave velocity structure models for five array sites were determined. Then, S-wave velocity inversion for all single-station sites were carried out by referencing the five array models. According to the inversion results, we estimated that the engineering bedrock (Vs > 500 m/s) for Sagaing City exists in the range of 10 m to 80 m in depth. |
URI: | http://hdl.handle.net/2433/235844 |
関連リンク: | http://www.dpri.kyoto-u.ac.jp/publications/nenpo/ |
出現コレクション: | Vol.61 B |
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