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地震・火山活動にともなう地震波速度変化 (特集:「巨大地震と火山活動」Part 2)
https://doi.org/10.15083/0000051812
https://doi.org/10.15083/00000518129da6eac8-12f9-4e0e-ac7e-f9d43b369aea
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
IHO922404.pdf (3.8MB)
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| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2019-05-07 | |||||
| タイトル | ||||||
| タイトル | 地震・火山活動にともなう地震波速度変化 (特集:「巨大地震と火山活動」Part 2) | |||||
| 言語 | ja | |||||
| 言語 | ||||||
| 言語 | jpn | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | seismic velocity changes | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | seismic interferometry | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | third-order elasticity | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | crack-induced seismic velocity reduction | |||||
| 資源タイプ | ||||||
| 資源 | http://purl.org/coar/resource_type/c_6501 | |||||
| タイプ | departmental bulletin paper | |||||
| ID登録 | ||||||
| ID登録 | 10.15083/0000051812 | |||||
| ID登録タイプ | JaLC | |||||
| その他のタイトル | ||||||
| その他のタイトル | Seismic Velocity Changes Associated with Seismic and Volcanic Activity (Special Issue: “Possible Effect of Mega Earthquake on Long-term Volcanic Activity” Part 2) | |||||
| 著者 |
青木, 陽介
× 青木, 陽介 |
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| 著者別名 | ||||||
| 識別子Scheme | WEKO | |||||
| 識別子 | 154971 | |||||
| 姓名 | Aoki, Yosuke | |||||
| 著者所属 | ||||||
| 著者所属 | 東京大学地震研究所 | |||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Recent developments in seismic networks and processing methods allow researchers to delineate temporal changes of seismic velocities associated with static and dynamic stress perturbations. In particular, the emergence of seismic interferometry, with which a seismic wavefield can be reconstructed from random signals such as ocean hum, anthropogenic activity, or seismic coda, enables subtle changes of seismic velocities down to much less than 0.1 % to be delineated. A compilation of recent studies suggests that observed seismic velocity changes do not correlate with static or dynamic stress changes nor shallow subsurface structures, although volcanic areas are found to be more susceptible to stress perturbations. However, the physics behind the observed velocity changes is not understood. Therefore, the current challenge is to understand the mechanism behind changes in seismic velocities due to stress perturbations with the aid of insights gained from theoretical and experimental considerations which, for example, take third-order elasticity and crack generation during stress perturbation into account. To do so in a sophisticated way requires seismic velocity changes to be imaged with a higher spatial resolution. This will be achieved by making more use of body waves and constructing a three-dimensional sensitivity kernel of seismic velocity changes. | |||||
| 書誌情報 |
東京大学地震研究所彙報 = Bulletin of the Earthquake Research Institute, University of Tokyo 巻 92, 号 2-4, p. 81-90, 発行日 2017 |
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| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 00408972 | |||||
| 書誌レコードID | ||||||
| 収録物識別子タイプ | NCID | |||||
| 収録物識別子 | AN00162258 | |||||
| 著者版フラグ | ||||||
| 値 | publisher | |||||
| 出版者 | ||||||
| 出版者 | 東京大学地震研究所 | |||||
| 出版者別名 | ||||||
| Earthquake Research Institute, University of Tokyo | ||||||
