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Construction of high spatio-temporal resolution resistivity monitoring system at Aso volcano

Research Project

Project/Area Number 26350475
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Natural disaster / Disaster prevention science
Research InstitutionKyoto University

Principal Investigator

Utsugi Mitsuru  京都大学, 大学院理学研究科, 助教 (10372559)

Project Period (FY) 2014-04-01 – 2017-03-31
Project Status Completed (Fiscal Year 2016)
Budget Amount *help
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2016: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2015: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords比抵抗モニタリング / 熱水系 / 時間変化 / 比抵抗 / 連続モニタリング / ACTIVE観測 / 火山噴火 / 阿蘇火山 / 浅部比抵抗 / ACTIVE観測システム / 繰り返し観測
Outline of Final Research Achievements

One of the most significant results of our research is that, we had detect the resistivity change due to the magmatic eruption of Aso volcano in 2014.
At Aso volcano, magmatic eruption was occurred in November 2014. As a result of repeated ACTIVE observations around the Nakadake crater, a significant temporal change in the specific resistivity structure accompanying the eruption was detected.
As a result of our observations made in September 2014, before the eruption, and November 2014, just after the eruption, subsurface resistivity was increased at a depth of 100-150 m. In addition, from the results of continuous geomagnetic observations at Kyoto University, it was suggested that the subsurface rocks was heated on the depth of 100-150 m. From these results, it can be inferred that subsurface hydrothermal fluid was pushed out by the rise of high temperature magma, and the subsurface resistivity had increased.

Report

(4 results)
  • 2016 Annual Research Report   Final Research Report ( PDF )
  • 2015 Research-status Report
  • 2014 Research-status Report

Research Products

(14 results)

All 2017 2016 2015 2014

All Journal Article (4 results) (of which Peer Reviewed: 4 results,  Open Access: 2 results,  Acknowledgement Compliant: 1 results) Presentation (10 results) (of which Int'l Joint Research: 2 results)

  • [Journal Article] Seismicity controlled by resistivity structure: the 2016 Kumamoto earthquakes, Kyushu Island, Japan2017

    • Author(s)
      Aizawa K. et al.
    • Journal Title

      Earth Planets and Space

      Volume: 69 Pages: 1-10

    • DOI

      10.1186/s40623-016-0590-2

    • NAID

      120006360155

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Crustal magma pathway beneath Aso caldera inferred from three-dimensional electrical resistivity structure2016

    • Author(s)
      M.Hata,S.Takakura,N.Matsushima,T.Hashimoto and M.Utsugi
    • Journal Title

      Geophysical Research Letters

      Volume: 43 Pages: 10720-10728

    • DOI

      10.1002/2016gl070315

    • NAID

      120006220018

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Hydrothermal system in the Tatun Volcano Group, northern Taiwan, inferred from crustal resistivity structure by audio-magnetotellurics2014

    • Author(s)
      Komori, S., Utsugi, M., Kagiyama, T., Inoue, H., Chen, C-H., Chiang, H-T., Chao, B-F., Yoshimura, R. and Kanda, W.,
    • Journal Title

      Progress in Earth and Planetary Science

      Volume: 1 Pages: 1-14

    • DOI

      10.1186/s40645-014-0020-7

    • Related Report
      2014 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Three- dimensional resistivity structure and magma plumbing system of the Kirishima volcanoes as inferred from broad-band magnetotelluric data2014

    • Author(s)
      Aizawa, K., T.Koyama, H.Hase, M.Uyeshima, W.Kanda, M.Utsusgi, R.Yoshimura, Y.Yamaya, T.Hashimoto, K.Yamazaki, S.Komatsu, A.Watanabe, K.Miyakawa, Y.Ogawa
    • Journal Title

      Journal of Geophysical Research

      Volume: 119 Pages: 198-215

    • DOI

      10.1002/2013jb010682

    • NAID

      120006582304

    • Related Report
      2014 Research-status Report
    • Peer Reviewed
  • [Presentation] ドローンを用いた空中磁気観測システムの開発2016

    • Author(s)
      宇津木充,橋本武志,城森敦善
    • Organizer
      SGEPSS
    • Place of Presentation
      福岡市
    • Year and Date
      2016-11-19
    • Related Report
      2016 Annual Research Report
  • [Presentation] 阿蘇火山2014年噴火に関する電磁気データの再解析について2016

    • Author(s)
      宇津木充
    • Organizer
      JpGU 2016
    • Place of Presentation
      千葉市幕張
    • Year and Date
      2016-05-22
    • Related Report
      2016 Annual Research Report
  • [Presentation] L1・L2正則化によるスパース推定法を用いた磁場3次元構造イメージング2016

    • Author(s)
      宇津木充
    • Organizer
      JpGU 2016
    • Place of Presentation
      千葉市幕張
    • Year and Date
      2016-05-22
    • Related Report
      2016 Annual Research Report
  • [Presentation] 2014年阿蘇火山噴火に伴う電磁気観測の結果について2015

    • Author(s)
      宇津木 充, 大倉 敬宏, 横尾 亮彦, 鍵山 恒臣
    • Organizer
      火山学会2015年秋季大会
    • Place of Presentation
      富山市
    • Year and Date
      2015-09-28
    • Related Report
      2015 Research-status Report
  • [Presentation] The temporal changes of the shallower resistivity structure associated with the eruption on 2011 at Aso volcano, Japan.2015

    • Author(s)
      M.Utsugi, T. Kagiyama and H.Inoue
    • Organizer
      IUGG2015 in Prague
    • Place of Presentation
      プラハ、チェコ共和国
    • Year and Date
      2015-06-22
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research
  • [Presentation] The 3-D magnetic imaging using the L-1 norm regularization.2015

    • Author(s)
      M.Utsugi
    • Organizer
      IUGG2015 in Prague
    • Place of Presentation
      プラハ、チェコ共和国
    • Year and Date
      2015-06-22
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research
  • [Presentation] 2014年阿蘇火山噴火に関連した電磁気観測の結果について2015

    • Author(s)
      宇津木充,鍵山恒臣,井上寛之
    • Organizer
      日本地球惑星科学連合連合大会2015年大会
    • Place of Presentation
      千葉市幕張
    • Year and Date
      2015-05-22
    • Related Report
      2015 Research-status Report
  • [Presentation] ACTIVEによる阿蘇中岳火口における繰り返し比抵抗観測 (2011年~2014年の観測結果について)2014

    • Author(s)
      宇津木 充、 鍵山 恒臣、 井上 寛之
    • Organizer
      日本火山学会2014年秋季大会
    • Place of Presentation
      福岡市・福岡大学
    • Year and Date
      2014-11-02 – 2014-11-04
    • Related Report
      2014 Research-status Report
  • [Presentation] 九重火山群周辺の表層電気伝導度分布2014

    • Author(s)
      鍵山恒臣 吉川 慎・宇津木充
    • Organizer
      日本火山学会2014年秋季大会
    • Place of Presentation
      福岡市・福岡大学
    • Year and Date
      2014-11-02 – 2014-11-04
    • Related Report
      2014 Research-status Report
  • [Presentation] 2014年阿蘇火山活動活性化に伴う浅部比抵抗の時間変化について2014

    • Author(s)
      宇津木 充、 鍵山 恒臣、 早河 秀章、 井上 寛之
    • Organizer
      日本地球惑星科学連合連合大会
    • Place of Presentation
      神奈川県横浜市・パシフィコ横浜会議センター
    • Year and Date
      2014-04-28 – 2014-05-02
    • Related Report
      2014 Research-status Report

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Published: 2014-04-04   Modified: 2018-03-22  

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