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Effect of the surface geology on strong ground motions due to the 2016 Central Tottori Earthquake, Japan
https://repository.lib.tottori-u.ac.jp/records/7164
https://repository.lib.tottori-u.ac.jp/records/7164c16b45ea-103f-4d9a-a870-757951528fec
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
eps69_s40623-017-0689-0.pdf (2.2 MB)
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||
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| 公開日 | 2022-07-01 | |||||
| タイトル | ||||||
| タイトル | Effect of the surface geology on strong ground motions due to the 2016 Central Tottori Earthquake, Japan | |||||
| 言語 | en | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| キーワード | ||||||
| 主題 | Strong ground motion | |||||
| キーワード | ||||||
| 主題 | Ground predominant period | |||||
| キーワード | ||||||
| 主題 | Microtremor observation | |||||
| キーワード | ||||||
| 主題 | H/V spectrum | |||||
| キーワード | ||||||
| 主題 | Nonlinear effect | |||||
| キーワード | ||||||
| 言語 | en | |||||
| 主題 | Strong ground motion | |||||
| キーワード | ||||||
| 言語 | en | |||||
| 主題 | Ground predominant period | |||||
| キーワード | ||||||
| 言語 | en | |||||
| 主題 | Microtremor observation | |||||
| キーワード | ||||||
| 言語 | en | |||||
| 主題 | H/V spectrum | |||||
| キーワード | ||||||
| 言語 | en | |||||
| 主題 | Nonlinear effect | |||||
| 資源タイプ | ||||||
| 資源タイプ | journal article | |||||
| 著者 |
香川, 敬生
× 香川, 敬生× 野口, 竜也× Yoshida, Shohei× Yamamoto, Shinji |
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| 著者所属（英） | ||||||
| 言語 | en | |||||
| 値 | Graduate School of Engineering, Tottori University | |||||
| 著者所属（英） | ||||||
| 言語 | en | |||||
| 値 | Graduate School of Engineering, Tottori University | |||||
| 著者所属（英） | ||||||
| 言語 | en | |||||
| 値 | Graduate School of Engineering, Tottori University | |||||
| 著者所属（英） | ||||||
| 言語 | en | |||||
| 値 | Technical Department, Tottori University | |||||
| 抄録 | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | On October 21, 2016, an earthquake with Japan Meteorological Agency (JMA) magnitude 6.6 hit the central part of Tottori Prefecture, Japan. This paper demonstrates two notable effects of the surface geology on strong ground motions due to the earthquake. One is a predominant period issue observed over a large area. A seismic intensity of 6 lower on the JMA scale was registered at three sites in the disaster area. However, the peak ground acceleration ranged from 0.3 to 1.4 G at the three sites because of the varying peak periods of observed strong ground motions. The spectral properties of the observations also reflect the damage around the sites. Three-component microtremors were observed in the area; the predominant ground period distributions based on horizontal to vertical spectral ratios were provided by the authors. The peak periods of the strong motion records agree well with predominant periods estimated from microtremor observations at a rather hard site; however, the predominant periods of the microtremors are slightly shorter than those of the main shock at the other two soft sites. We checked the nonlinear effect at the sites by comparing the site responses to small events and the main shock. The peak periods of the main shock were longer than those of the weak motions at the sites. This phenomenon indicates a nonlinear site effect due to large ground motions caused by the main shock. A horizontal component of the accelerogram showed rather pulsating swings that indicate cyclic mobility behavior, especially at a site close to a pond shore; ground subsidence of ~20 cm was observed around the site. The peak periods of weak motions agree well with those of the microtremor observations. This implies an important issue that the predominant periods estimated by microtremors are not sufficient to estimate the effect of surface geology for disaster mitigation. We have to estimate the predominant periods under large ground motions considering the nonlinear site response of soft sediment sites. | |||||
| 書誌情報 |
EARTH PLANETS AND SPACE en : EARTH PLANETS AND SPACE 巻 69, 発行日 2017-08-15 |
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| 出版者 | ||||||
| 出版者 | Springer Nature | |||||
| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 18805981 | |||||
| DOI | ||||||
| 関連タイプ | isIdenticalTo | |||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1186/s40623-017-0689-0 | |||||
| 権利 | ||||||
| 権利情報 | (C) The Author(s) 2017. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, | |||||
| 情報源 | ||||||
| 関連名称 | Kagawa Takao, Noguchi Tatsuya, Yoshida Shohei, et al. Effect of the surface geology on strong ground motions due to the 2016 Central Tottori Earthquake, Japan. EARTH PLANETS AND SPACE. 2017. 69. doi:10.1186/s40623-017-0689-0 | |||||
| 関連サイト | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | https://earth-planets-space.springeropen.com/articles/10.1186/s40623-017-0689-0 | |||||
| 関連名称 | https://earth-planets-space.springeropen.com/articles/10.1186/s40623-017-0689-0 | |||||
| 著者版フラグ | ||||||
| 出版タイプ | VoR | |||||
