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Monitoring of the volcanic fluid system and elucidation of the deep-magma ascent mechanism at Aso volcano

Research Project

Project/Area Number 15204040
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Research Field Solid earth and planetary physics
Research InstitutionThe University of Tokyo

Principal Investigator

KAWAKATSU Hitoshi  The University of Tokyo, Earthquake Research Institute, Professor (60242153)

Co-Investigator(Kenkyū-buntansha) SUDO Yasuaki  Kyoto University, Graduate School of Science, Associate Professor (40025466)
OKURA Takahiro  Kyoto University, Graduate School of Science, Associate Professor (40233077)
KANESHIMA Satoshi  Kyushu University, Graduate School of Sciences, Professor (80202018)
YAMAMOTO Mare  Tohoku University, Graduate School of Science, Associate Professor (30400229)
HASHIMOTO Takeshi  Hokkaido University, Graduate School of Science, Associate Professor (70283588)
及川 純  東京大学, 地震研究所, 助手 (40262084)
Project Period (FY) 2003 – 2006
Project Status Completed (Fiscal Year 2006)
Budget Amount *help
¥41,860,000 (Direct Cost: ¥32,200,000、Indirect Cost: ¥9,660,000)
Fiscal Year 2006: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2005: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2004: ¥11,310,000 (Direct Cost: ¥8,700,000、Indirect Cost: ¥2,610,000)
Fiscal Year 2003: ¥20,280,000 (Direct Cost: ¥15,600,000、Indirect Cost: ¥4,680,000)
KeywordsAso volcano / broadband seismometer / volcanic tremor / lone-period tremor / volcanic eruption / magma ascent / GPS / array seismometry / 広帯域地震
Research Abstract

In order to monitor the volcanic fluid system and to elucidate the mechanism of magma ascent before eruptions, we deployed broadband seismometer and GPS networks in Aso volcano. We also conducted a series of dense array observations to monitor shallow fluid flow activities. As the result, (l) we were successful to observe extremely fast fluid movements in the shallow part of the volcano that appear to indicate a well developed shallow conduit system, (2) we have presented a model that explains the activities of long-period (15s) and short-period (1s) tremors as a result of the activities of a single conduit system of hydrothermal fluid flows. We have also developed an efficient method to compute the dynamic response of a fluid-filled crack that is flexible to many applications which may be encountered in volcano seismology.

Report

(5 results)
  • 2006 Annual Research Report   Final Research Report Summary
  • 2005 Annual Research Report
  • 2004 Annual Research Report
  • 2003 Annual Research Report
  • Research Products

    (25 results)

All 2007 2006 2005 2004

All Journal Article (23 results) Book (2 results)

  • [Journal Article] Volcano Seismology2007

    • Author(s)
      H.Kawakatsu and M.Yamamoto
    • Journal Title

      Treatise on Geophysics(Elsevier) 4

      Pages: 389-420

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Yamamoto, Volcano Seismology2007

    • Author(s)
      H. Kawakatsu and M.
    • Journal Title

      Treatise on Geophysics, Elsevier, vol. 4

      Pages: 289-420

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] ドーム状隆起に伴う磁場変化-有珠山2000年噴火時の全磁力変化再検討-2007

    • Author(s)
      橋本武志, 他6名
    • Journal Title

      北海道大学地球物理学研究報告 70

      Pages: 123-135

    • NAID

      80018557905

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Volcano Seismology2007

    • Author(s)
      H.Kawakatsu, M.Yamamoto
    • Journal Title

      in Treatise of Geophysics (Elsevier) (in press)

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Apparent migration of tremor sourcessynchronized with the chapes in the tremor amplitude observed at Aso volcano,Japan2006

    • Author(s)
      N.Takagi, 他6名
    • Journal Title

      Journal of Volcanology and Geothermal Research 154

      Pages: 181-200

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Apparent migration of tremor sources synchronized with the changes in the tremor amplitude observed at Aso volcano, Japan2006

    • Author(s)
      N. Takagi, et. al.
    • Journal Title

      J. Vol. Geothermal Res 154

      Pages: 181-200

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Observation of water vapor with a portable raman lidar -continuous monitoring and field experiments over the forest and at the volcano-2006

    • Author(s)
      T.Nakamura 他5名
    • Journal Title

      Proceedings of the 23rd International Laser Radar Conference

      Pages: 897-900

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Apparent migration of tremor sources synchronized with the changes in the tremor amplitude observed at Aso volcano, Japan2006

    • Author(s)
      N.Takagi, 他6名
    • Journal Title

      Journal of Volcanology and Geothermal Research 154

      Pages: 181-200

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Apparent migration of tremor source synchronized with the change in the tremor amplitude observed at Aso Volcano, Japan2006

    • Author(s)
      N.Takagi 他
    • Journal Title

      J.Volcanology Geothermal Research (in press)

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Dynamic response of frequent tremors at Aso volcano to teleseismic waves from the 1999 Chi-Chi,Taiwan. earthquake2005

    • Author(s)
      M.Miyazawa, 他
    • Journal Title

      J.Volcanology Geothermal Research 147

      Pages: 173-195

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Hydrothermal system beneath Aso volcano as inferred from self-potential mapping and resistivity structure2005

    • Author(s)
      H.Hase, 他
    • Journal Title

      J.Volcanology Geothermal Research 143

      Pages: 259-277

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Numerical simulation of the steam-water flow instability as a mechanism of long period ground vibrations at geothermal areas2005

    • Author(s)
      K.Iwamura and S.Kaneshima
    • Journal Title

      Geophys.J.Int. 162

      Pages: 833-851

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Dynamic response of frequent tremors at Aso volcano to teleseismic waves from the 1999 Chi-Chi, Taiwan earthquake2005

    • Author(s)
      M. Miyazawa, et. al.
    • Journal Title

      J. Vol. GeothermalRes 147

      Pages: 173-195

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Dynamic response of frequent tremors at Aso volcano to teleseismic waves from the 1999 Chi-Chi, Taiwan earthquake2005

    • Author(s)
      H. Hase, et. al.
    • Journal Title

      J. Vol. GeothermalRes 143

      Pages: 259-277

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Kaneshima, Numerical simulation of the steam-water flow instability as a mechanism of long period ground vibrations at geothermal areas2005

    • Author(s)
      K. Iwamura and S.
    • Journal Title

      Geophys. J. Int. 162

      Pages: 833-851

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] A new technique of radiation thermometry using a consumer digital camcorder : Observations of red glow at Aso volcano, Japan2005

    • Author(s)
      T.Saito 他
    • Journal Title

      Earth Planets Space 57・2

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Dynamic response of frequent tremors at Aso volcano to teleseismic waves from the 1999 Chi-Chi, Taiwan earthquake2005

    • Author(s)
      M.Miyazawa 他
    • Journal Title

      J.Volcanology Geothermal Research 147

      Pages: 173-195

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Numerical simulation of the steam-water flow instability as a mechanism of long period ground vibrations at geothermal areas2005

    • Author(s)
      K.Iwamura, S.Kaneshima
    • Journal Title

      Geophys.J.Int. 162

      Pages: 833-851

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Hydrothermal system beneath Aso volcano as inferred from self-potential mapping and resistivity structure2005

    • Author(s)
      H.Hase 他
    • Journal Title

      J.Volcanology Geothermal Research 143

      Pages: 259-277

    • Related Report
      2005 Annual Research Report
  • [Journal Article] 火山の電磁気観測-歴史・意義・展望-2005

    • Author(s)
      橋本武志
    • Journal Title

      火山 (印刷中)

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Distribution and characteristics in waveform and spectrum of seismic events associated with the 2000 eruption of Mt.Usu2004

    • Author(s)
      Matsubara, W.(.他4名), H.Kawakatsu, and M.Yamamoto
    • Journal Title

      J.Vol.Geothermal Res 136

      Pages: 141-158

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Distribution and characteristics in waveform and spectrum of seismic events associated with the 2000 eruption of Mt. Usu2004

    • Author(s)
      W. Matsubara, et. al.
    • Journal Title

      J. Vol. Geothermal Res 136

      Pages: 141-158

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Distribution and characteristics in waveform and spectrum of seismic events associated with the 2000 eruption of My. Usu2004

    • Author(s)
      Matsubara, W.(他4名), H.Kawakatsu, M.Yamamoto
    • Journal Title

      J.Vol.Geothermal Res 136

      Pages: 141-158

    • Related Report
      2004 Annual Research Report
  • [Book] 漱石・白秋・清張と阿蘇火山-26人め文学作品にみる火山活動2004

    • Author(s)
      須藤 靖明
    • Total Pages
      144
    • Publisher
      櫂歌書房
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Book] 漱石・白秋・清張と阿蘇火山 -26人の文学作品にみる火山活動-2004

    • Author(s)
      須藤 靖明
    • Total Pages
      144
    • Publisher
      櫂歌書房
    • Related Report
      2004 Annual Research Report

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Published: 2003-04-01   Modified: 2016-04-21  

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