WEKO3
アイテム
Temporal changes in coda Q-1 and b value due to the static stress change associated with the 1995 Hyogo-ken Nanbu earthquake
https://doi.org/10.24517/00010414
https://doi.org/10.24517/00010414c9270b9a-3ab4-4bdc-a201-30ba643e1e42
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
SC-PR-HIRAMATSU-Y-6141.pdf (593.7 kB)
|
.png)
|
| Item type | 学術雑誌論文 / Journal Article(1) | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 公開日 | 2017-10-03 | |||||||||||||
| タイトル | ||||||||||||||
| タイトル | Temporal changes in coda Q-1 and b value due to the static stress change associated with the 1995 Hyogo-ken Nanbu earthquake | |||||||||||||
| 言語 | ||||||||||||||
| 言語 | eng | |||||||||||||
| 資源タイプ | ||||||||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||||||||||
| 資源タイプ | journal article | |||||||||||||
| ID登録 | ||||||||||||||
| ID登録 | 10.24517/00010414 | |||||||||||||
| ID登録タイプ | JaLC | |||||||||||||
| 著者 |
Hiramatsu, Yoshihiro
× Hiramatsu, Yoshihiro× Hayashi, Nobuhiko× Furumoto, Muneyoshi× Katao, Hiroshi |
|||||||||||||
| 著者別表示 |
平松, 良浩
× 平松, 良浩
× 林, 伸彦
× 古本, 宗充
× 片尾, 浩
|
|||||||||||||
| 書誌情報 |
Journal of Geophysical Research B: Solid Earth 巻 105, 号 3, p. 6141-6151, 発行日 2000-03-10 |
|||||||||||||
| ISSN | ||||||||||||||
| 収録物識別子タイプ | ISSN | |||||||||||||
| 収録物識別子 | 0148-0227 | |||||||||||||
| NCID | ||||||||||||||
| 収録物識別子タイプ | NCID | |||||||||||||
| 収録物識別子 | AA10819743 | |||||||||||||
| DOI | ||||||||||||||
| 関連タイプ | isIdenticalTo | |||||||||||||
| 識別子タイプ | DOI | |||||||||||||
| 関連識別子 | https://doi.org/10.1029/1999jb900432 | |||||||||||||
| 出版者 | ||||||||||||||
| 出版者 | American Geophysical Union (AGU) | |||||||||||||
| 抄録 | ||||||||||||||
| 内容記述タイプ | Abstract | |||||||||||||
| 内容記述 | The seismicity in the Tamba region, northeast of the Hyogo-ken Nanbu earthquake in Japan (January 17, 1995; M(JMA) 7.2), increased significantly following this earthquake. This increase suggests that the static stress change due to a large earthquake causes a change in the crustal condition of dynamics. In order to reveal the changes quantitatively, we investigate the temporal variation in coda Q-1 and b value in the Tamba region. We analyze the waveform data of many shallow microearthquakes (M 1.5-3.0) in the region recorded in a period from 1987 to 1996. Coda Q-1 is estimated in 10 frequency bands in a range of 1.5-24 Hz based on the single isotropic scattering model. At frequencies between 1.5 and 4.0 Hz the temporal variation in coda Q-1 shows significant correlation with the occurrence of the Hyogo-ken Nanbu earthquake; coda Q-1 increases after the event. A variation in b value whose sign is opposite to that of coda Q-1 is recognized. The fracture dimensions of microearthquakes that contribute to the variation in b value are estimated to be 400 m. This scale length is consistent with the characteristic scale length of scatter, 300-600 m, which contributes effectively to a temporal variation in coda Q-1. The crustal activity in the Tamba region is possibly controlled by the heterogeneity with dominant scale of 102 m. The stress sensitivity of the coda Q-1 change is estimated to be 10 (MPa)-1. This value is an order of magnitude larger than the stress sensitivity of seismic velocity reported before. | |||||||||||||
| 著者版フラグ | ||||||||||||||
| 出版タイプ | VoR | |||||||||||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||||||||
