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  1. 131 地震研究所
  2. 東京大学地震研究所彙報
  3. 78
  4. 1
  1. 0 資料タイプ別
  2. 30 紀要・部局刊行物
  3. 東京大学地震研究所彙報
  4. 78
  5. 1

Relation between seismic velocity structure of subducting oceanic crust and interplate micro-seismicity

http://hdl.handle.net/2261/5738
dcee5a0a-437a-4a6a-8b89-bd99412751d2
プレビュー
名前 / ファイル ライセンス Actions
IHO78110.pdf IHO78110.pdf (1.3 MB)
item type 紀要論文 / Departmental Bulletin Paper(1)
公開日 2007-04-23
タイトル
タイトル Relation between seismic velocity structure of subducting oceanic crust and interplate micro-seismicity
言語
言語 eng
キーワード
主題Scheme Other
主題 OBS seismic experiment
キーワード
主題Scheme Other
主題 S wave velocity structure
キーワード
主題Scheme Other
主題 fault strength
キーワード
主題Scheme Other
主題 interplate seismicity
資源タイプ
資源 http://purl.org/coar/resource_type/c_6501
タイプ departmental bulletin paper
その他のタイトル
その他のタイトル プレート境界における地震活動と沈み込む海洋性地殻の地震波速度構造との関係について : 特集「地震発生の物理からみた地震発生帯堀削」
著者 Hino, Ryota

× Hino, Ryota

WEKO 125806

Hino, Ryota

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著者別名
姓名
姓名 日野, 亮太
著者所属
Research Center for Prediction of Earthquakes and Volcanic Eruptions, Graduate School of Science, Tohoku University
抄録
内容記述タイプ Abstract
内容記述 Ipresent a seismic velocity structure model to explain strong seismic reflections from the aseismic part of the plate boundary recently reported from an airgun-OBS survey in the northern Japan trench subduction zone. Although no P wave velocity anomaly models could explain the reflection amplitudes and the first arrival travel times consistently, it is possible to simulate significant amplitudes observed in relative small offset ranges using a model with a low S wave velocity in the subducting oceanic crust. The upper oceanic crust with the low S wave velocity anomaly may reduce the shear strength of the plate boundary thrust, as fault damaged zones with a considerably low S wave velocity make faults weak. The result of this study indicates the importance of clarifying the S wave structure in the vicinity of the plate interface to understand the frictional propeties of subduction megathrust seismogenic zone. Not only conventional seismic surveys but also seismic observations in deep boreholes are required to do this.
書誌情報 東京大學地震研究所彙報 = Bulletin of the Earthquake Research Institute, University of Tokyo

巻 78, 号 1, p. 113-120, 発行日 2003
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
フォーマット
内容記述タイプ Other
内容記述 application/pdf
日本十進分類法
主題Scheme NDC
主題 051.1
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
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