Effects of fault geometry and subsurface structure model on the strong motion and surface rupture induced by the 2014 kamishiro fault nagano earthquake

N. Iwata, R. Kiyota, Aydan, T. Ito, F. Miura

研究成果: Conference contribution

抄録

The authors used a three-dimensional finite element method (3D-FEM) to examine a series of fault rupture simulations for the 2014 Northern Nagano Earthquake and simultaneously estimate the displacement and strong motions. The computational results confirmed that the maximum responses of ground motions and displacement could be simultaneously evaluated using the appropriate constitutive parameters and fine FEM mesh. However, the duration of the acceleration response and shape of the surface displacement waves were not well simulated. In this study, we examined the influence of the fault bend at a shallow depth and P-and S-wave velocity structure models based on a geological survey. As a result, by taking account of bending of the fault plane and the elastic velocity structure at a shallow depth, it was possible to perform a seismic behaviour analysis using the 3D-FEM approach.

本文言語English
ホスト出版物のタイトルRock Dynamics Summit - Proceedings of the 2019 Rock Dynamics Summit, RDS 2019
編集者Omer Aydan, Takashi Ito, Takafumi Seiki, Katsumi Kamemura, Naoki Iwata
出版社CRC Press/Balkema
ページ225-231
ページ数7
ISBN(印刷版)9780367347833
DOI
出版ステータスPublished - 2019
イベントRock Dynamics Summit, RDS 2019 - Okinawa, Japan
継続期間: 2019 5 72019 5 11

出版物シリーズ

名前Rock Dynamics Summit - Proceedings of the 2019 Rock Dynamics Summit, RDS 2019

Conference

ConferenceRock Dynamics Summit, RDS 2019
国/地域Japan
CityOkinawa
Period19/5/719/5/11

ASJC Scopus subject areas

  • 地質学

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