| Item type |
紀要論文 / Departmental Bulletin Paper(1) |
| 公開日 |
2010-06-10 |
| タイトル |
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|
タイトル |
摩擦すべりに伴う細粒石英ガウジのTL信号強度変化 : 剪断応力から期待される完全ゼロイング深度 |
| 言語 |
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言語 |
jpn |
| キーワード |
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|
主題 |
摩擦すべり, 細粒石英ガウジ, 完全ゼロイング, frictional sliding, fine-grained quartz gouge, complete zeroing |
| 資源タイプ |
|
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資源タイプ |
departmental bulletin paper |
| 著者 |
平賀, 章三
吉本, 晃子
嶋本, 利彦
|
| 著者(ヨミ) |
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姓名 |
ヒラガ, ショウゾウ |
| 著者(ヨミ) |
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姓名 |
ヨシモト, アキコ |
| 著者(ヨミ) |
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姓名 |
シマモト, トシヒコ |
| 著者別名 |
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姓名 |
HIRAGA, Shozo |
| 著者別名 |
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姓名 |
YOSHIMOTO, Akiko |
| 著者別名 |
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姓名 |
SHIMAMOTO, Toshihiko |
| 抄録 |
|
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内容記述タイプ |
Abstract |
|
内容記述 |
We investigated the TL intensity changes of simulated intrafault materials of quartz from the St. Peter Sand, focusing our attention on the effect of frictional work due to shear stress. The shear experiment runs were performed under a sufficiently low slip rate of 56μm/s to avoid the effect of frictional heating. Furthermore, to ensure the TL intensity increase due to a shear fracture (Hiraga et al. 2002) was effectively negligible, we used samples previously fine-grained to 1-8μm diameter. It was found that TL intensity decreased linearly with an increase in frictional work, and obtained the complete zeroing condition of 4.8kJ/g or 1.2 MJ/m^2 by extrapolation of the regression line. Next, we evaluated the shear stress of 0.76MPa satisfying this condition in case of an earthquake of magnitude 7, based on the displacement of 1.6m derived from the relationship (Matsuda, 1995) between magnitude and displacement of an earthquake. Finally, we estimated the complete zeroing depth of 130 or 40m for a normal or reverse fault respectively, assuming a vertical normal stress to be a lithostatic pressure, at the time of examination of stress field, satisfying Coulomb's failure criterion with a Mohr's circle. The complete zeroing of TL intensity can be expected to be attainable under more gentle conditions in the case of an actual faulting because of frictional heating. This is a subject for future studies, to perform experiments under faithfully simulated conditions for an actual faulting. |
| 書誌情報 |
奈良教育大学紀要. 自然科学
巻 53,
号 2,
p. 17-29,
発行日 2004-10-31
|
| ISSN |
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収録物識別子タイプ |
ISSN |
|
収録物識別子 |
05472407 |
| 書誌レコードID |
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収録物識別子タイプ |
NCID |
|
収録物識別子 |
AN00181070 |
| 著者版フラグ |
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出版タイプ |
VoR |
| その他のタイトル |
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その他のタイトル |
TL Intensity Changes of Fine-grained Quartz Gouge during Frictional Sliding : Complete Zeroing Depth Estimated from the Result of Shear Experiments |
| 出版者 |
|
|
出版者 |
奈良教育大学 |
53-2-03-2004.pdf (1.6 MB)
