SEGJ14th

講演情報

Oral presentation

Digital Transformation Technologies in Geophysics

Digital transformation

2021年10月19日(火) 10:40 〜 12:00 Room 2 / 口頭セッション (Zoom 2)

Chair:Shinichiro Iso, Kazuyoshi Takaichi

11:20 〜 11:40

[DX-03] Introduction to autonomous and integrated H/V database for site characterization

*Koichi Hayashi1, Takaho Kita2, Toru Suzuki3, Stefan Burns4, Takako Takahashi1, Chisato Konishi1, Haruhiko Sazuki1, Hisanori Matsuyama1 (1. OYO Corporation (Japan), 2. Ocean Engineering Corporation (Japan), 3. Mony Geophysical Exploration (Japan), 4. Geometrics (United States of America))

We developed a database of geophysical investigation results particularly for S-wave velocity (Vs) profiles, dispersion curves or horizontal to vertical spectral ratios (H/V) obtained from single station three component microtremor measurements, microtremor array measurements (MAM), or surface wave measurements. Our database is open to the public and users can upload their measurement results and share them with community through internet. The system consists of autonomous seismographs and processing software on mobile devices so that users can easily measure ambient noises, calculate Vs profiles and/or H/V and upload the results to the database. The database is integrated with other public databases and users can process and interpret geophysical data together with shallow to deep subsurface information in the other databases. We measured H/V and Vs profiles approximately 1300 and 700 sites respectively and opened to the public. Our data in the database demonstrated that dense H/V measurements provided valuable shallow to deep subsurface information to site characterization.

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