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Deformation, physical evolution of sediments during initial accretion processes and related variation of hydraulic properties

Research Project

Project/Area Number 19740314
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeSingle-year Grants
Research Field Geology
Research InstitutionKyoto University (2008)
National Institute of Advanced Industrial Science and Technology (2007)

Principal Investigator

YAMAMOTO Yuzuru  Kyoto University, 大学院・工学研究科, 研究員 (10435753)

Project Period (FY) 2007 – 2008
Project Status Completed (Fiscal Year 2008)
Budget Amount *help
¥3,670,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥270,000)
Fiscal Year 2008: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2007: ¥2,500,000 (Direct Cost: ¥2,500,000)
Keywordsテクトニクス / 付加体 / 地震 / 沈み込み帯 / 透水係数 / 間隙率 / 三浦 / 房総
Research Abstract

付加体形成初期の変形にともなう物性変化を被っている堆積物は,肉眼や顕微鏡下で変形構造が確認されないものの,粒子の配列様式と透水特性が大きく異なることが判明した.変形に伴って物性変化を被った堆積物は,被っていない堆積物に比べ最大25%にまで透水係数が小さくなった.また,物性変化を被った堆積物は,地震発生帯上限付近に対応する封圧80MPa付近において,間隙率が急減することが確認され,その深度領域において間隙水を急激に排出し,周辺の強度低下をもたらしている可能性を示した.

Report

(3 results)
  • 2008 Annual Research Report   Final Research Report ( PDF )
  • 2007 Annual Research Report
  • Research Products

    (18 results)

All 2009 2008 2007

All Journal Article (8 results) (of which Peer Reviewed: 7 results) Presentation (10 results)

  • [Journal Article] Formation of chaotic rock-units during primary accretion processes : examples from the Miura-Boso accretionary complex2009

    • Author(s)
      Yamamoto, Y., Nidaira, M., Ohta, Y. and Ogawa, Y.
    • Journal Title

      Central Japan. Island Arc (in press)

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Formation of chaotic rock-units during primary accretion processes : examples from the Miura-Boso accretionary complex. Central Japan2009

    • Author(s)
      Yamamoto, Y., Nidaira, M., Ohta, Y. and Ogawa,
    • Journal Title

      Island Arc (in press)

    • NAID

      10026542285

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Pore pressure penetrometers document high overpressure near the seafloor where multiple submarine landslides have occurred on the continental slope, offshore Louisiana, Gulf of Mexico2008

    • Author(s)
      Flemings, P. B., Long, H., Dugan, B., Germaine, J., John, C. M., Behrmann, J. H., Sawer, D., and the Expedition 308 Scientists
    • Journal Title

      Earth and Planetary Science Letters 269

      Pages: 309-325

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] 地震が作り出した芸術:巨大乱堆積物2007

    • Author(s)
      山本由弦・坂口有人
    • Journal Title

      地震News 10

      Pages: 12-12

    • Related Report
      2008 Final Research Report
  • [Journal Article] 千倉層群畑層中に見られる大規模コンボリュート葉理と火炎構造2007

    • Author(s)
      山本由弦・栗原敏之・常盤哲也・植田勇人・中江訓・脇田浩二・原英俊・内野隆之・上野光・鎌田祥仁・山田泰広・宮川歩夢・辻健
    • Journal Title

      地質学雑誌 113

    • NAID

      110006532319

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Large-scale chaotically mixed sedimentary body within the Late Pliocene to Pleistocene Chikura Group2007

    • Author(s)
      Yamamoto, Y., Ogawa, Y., Uchino, T., Muraoka, S., and Chiba, T.
    • Journal Title

      Central Japan, Island Arc 16

      Pages: 505-507

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] 千倉層群畑層中に見られる大規模コンボリュート葉理と火炎構造2007

    • Author(s)
      山本 由弦・栗原 敏之・常盤 哲也・植田 勇人・中江 訓・脇田 浩二・原英 俊・内野 隆之・上野 光・鎌田 祥仁・山田 泰広・宮川 歩夢・辻 健
    • Journal Title

      地質学雑誌 113

    • NAID

      110006532319

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Large-scalechaotically mixed sedimentary body within the Late Pliocene to Pleistocene Chikura Group,Central Japan2007

    • Author(s)
      Yamamoto.Y., Ogawa, Y., Uchino, T., Muraoka, S., and Chiba, T
    • Journal Title

      Island Arc 16

      Pages: 505-507

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Presentation] Deformation characteristics of 2-3 km buried Hota accretionary complex, central Japan2008

    • Author(s)
      Yamamoto, Y., Yamaguch, H., Kameda, J.
    • Organizer
      AGU
    • Place of Presentation
      San Francisco, USA
    • Year and Date
      2008-12-15
    • Related Report
      2008 Final Research Report
  • [Presentation] Deformation characteristics of 2-3 km buried Hota accretionary comolex, central Japan2008

    • Author(s)
      YaMamoto, Y., Yamaguch, H., Kameda, J.
    • Organizer
      AGU Fail Meeting
    • Place of Presentation
      San Francisco
    • Year and Date
      2008-12-15
    • Related Report
      2008 Annual Research Report
  • [Presentation] 深度2-3km領域におけるプレート境界断層の変形2008

    • Author(s)
      山本由弦・山口はるか・亀田純・千葉淳一
    • Organizer
      地質学会115大会
    • Place of Presentation
      秋田
    • Year and Date
      2008-09-20
    • Related Report
      2008 Annual Research Report 2008 Final Research Report
  • [Presentation] 沈み込み帯表層の乱堆積物-地質から古地震イベントを見出すために-2008

    • Author(s)
      山本由弦
    • Organizer
      日本地球惑星科学連合大会
    • Place of Presentation
      幕張
    • Year and Date
      2008-05-30
    • Related Report
      2008 Annual Research Report 2008 Final Research Report
  • [Presentation] Earthquake-induced submarine sliding on the trench-slope basin within the Late Pliocene to Pleistocene Chikura Group, Central Japan2007

    • Author(s)
      Yamamoto, Y., Suzuki, K.
    • Organizer
      AGU
    • Place of Presentation
      San Francisco, USA
    • Year and Date
      2007-12-13
    • Related Report
      2008 Final Research Report
  • [Presentation] 地震が誘発する巨大海底地すべりとその内部構造2007

    • Author(s)
      山本由弦・鈴木清史
    • Organizer
      地質学会114大会
    • Place of Presentation
      札幌
    • Year and Date
      2007-09-11
    • Related Report
      2008 Final Research Report 2007 Annual Research Report
  • [Presentation] 三浦・房総半島の陸域地質構造と伊豆弧衝突テクトニクス:南関東アスペリティ地域掘削に向けた地質情報の整理2007

    • Author(s)
      山本由弦
    • Organizer
      日本地球惑星科学連合大会
    • Place of Presentation
      幕張
    • Year and Date
      2007-05-24
    • Related Report
      2008 Final Research Report 2007 Annual Research Report
  • [Presentation] 巨大地滑りによる物性とファブリックの系統的変化:IODP308次航海2007

    • Author(s)
      山本由弦, Derek Sawyer, IODP Exp. 308乗船研究者
    • Organizer
      日本地球惑星科学連合大会
    • Place of Presentation
      幕張
    • Year and Date
      2007-05-24
    • Related Report
      2008 Final Research Report
  • [Presentation] 巨大地滑リによる物性とファブリックの系統的変化:IODP308次航海2007

    • Author(s)
      山本 由弦, Derek Sawyer, IODP Exp. 308乗船研究者
    • Organizer
      日本地球惑星科学連合大会
    • Place of Presentation
      幕張
    • Related Report
      2007 Annual Research Report
  • [Presentation] Earthquake-induced submarine sliding on the trench-slope basin within the Late Pliocene to Pleistocene Chikura Group, Central Japan2007

    • Author(s)
      Yamamoto, Y., Suzuki, K.
    • Organizer
      AGU
    • Place of Presentation
      San Francisw, U.S.A.
    • Related Report
      2007 Annual Research Report

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Published: 2007-04-01   Modified: 2016-04-21  

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