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High-frequency infrared analysis of eruption sequences: long- and short-time scale variations and precursor phenomena

Research Project

Project/Area Number 19K04011
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 17040:Solid earth sciences-related
Research InstitutionThe University of Tokyo

Principal Investigator

Kaneko Takayuki  東京大学, 地震研究所, 准教授 (90221887)

Co-Investigator(Kenkyū-buntansha) 安田 敦  東京大学, 地震研究所, 准教授 (70222354)
Project Period (FY) 2019-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2020: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2019: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords火山 / 噴火 / 衛星 / リモートセンシング / ひまわり / 赤外画像 / 熱異常 / 噴火推移 / 西之島 / ひまわり8号 / ALOS-2 / 噴出率 / 噴出的噴火 / しきさい / GCOM-C / SGLI / 溶岩流 / 火口湖 / ブルカノ噴火
Outline of Research at the Start

本研究は噴火推移を熱異常の時間変化によりパターンとして捉え,それを基として,以下の検討を進める:(1) 長時間スケールの変動を基にした "典型的な活動"における噴火推移の特徴抽出, (2) 噴火開始・活動様式変化の前兆となる熱異常の抽出,(3) 噴火プロセスを反映した短時間スケールの熱異常変化の検討,(4) 熱異常と溶岩噴出率の関係に関する検討.本研究では,熱異常の時間変化の観測には10分毎という高頻度観測が可能なひまわり8号赤外画像を用い,これに高分解能画像等を組合せて噴火推移の解析を行う.この結果を基に,短時間スケールの変動や前兆現象等を含めた新しい視点から噴火推移を包括的に整理する.

Outline of Final Research Achievements

We analyzed recent eruptions in the Asia-Pacific region based on the time-series variation of thermal anomalies obtained from satellite infrared images. We worked on extracting the characteristics of each eruption sequence and conducted comparative analyses among them. The following are specific topics: 1) Estimation of eruption sequence of the 2017 Nishinoshima activity based on the analysis of the time-series variation of the thermal anomalies using Himawari-8 and high-resolution images, 2) Observation of volcanic activity using characteristics of GCOM-C SGLI images, 3) Development of a real-time estimation method for lava effusion rate based on the thermal anomaly observed by Himawari 8, 4) Analysis of the Nishinoshima 2019-2020 activity based on the multi-satellite observations, and 5) Comparative analysis of eruption sequences of the 2018 Shinmoe-dake and the 2019 Bezymianny activities.

Academic Significance and Societal Importance of the Research Achievements

噴火推移は,火山下のマグマ供給系や火道浅部でのプロセスが地表現象として表れたものである.従って,この全像をシステムとして理解するには,地下でのプロセスと地表現象との関係を包括的に解明する必要があり,この関係を制約する上で,地表現象である噴火推移の多様性・共通性・規則性を知ることが重要となる.本研究は,最新の衛星観測技術を用いて多数の火山を観測することにより,多くの噴火活動の全推移を短期的・微小な変動も含め捉えることを実現した.さらに,推移の共通性や活動変化の予兆シグナル等を洗い出し,原因となるメカニズムを含めて整理を進めた.これらの情報は噴火予測を行う上でも有用な情報となる.

Report

(6 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (14 results)

All 2023 2022 2021 2020 2019 Other

All Journal Article (4 results) (of which Peer Reviewed: 4 results,  Open Access: 4 results) Presentation (6 results) (of which Int'l Joint Research: 3 results) Book (1 results) Remarks (3 results)

  • [Journal Article] Episode 4 (2019?2020) Nishinoshima activity: abrupt transitions in the eruptive style observed by image datasets from multiple satellites2022

    • Author(s)
      Kaneko Takayuki、Maeno Fukashi、Ichihara Mie、Yasuda Atsushi、Ohminato Takao、Nogami Kenji、Nakada Setsuya、Honda Yoshiaki、Murakami Hiroshi
    • Journal Title

      Earth, Planets and Space

      Volume: 74 Issue: 1 Pages: 34-34

    • DOI

      10.1186/s40623-022-01578-6

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Simple empirical method for estimating lava-effusion rate using nighttime Himawari-8 1.6-μm infrared images2021

    • Author(s)
      Kaneko Takayuki、Yasuda Atsushi、Fujii Toshitsugu
    • Journal Title

      Earth, Planets and Space

      Volume: 73 Issue: 1 Pages: 1-10

    • DOI

      10.1186/s40623-021-01372-w

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] A new infrared volcano monitoring using GCOM-C (SHIKISAI) satellite: applications to the Asia-Pacifc region2020

    • Author(s)
      Kaneko, T., Yasuda, A., Takasaki, K., Nakano, S., Fujii, T., Honda, Y., Kajiwara, K. and Murakami, H.
    • Journal Title

      Earth Planets Space

      Volume: 72 Issue: 1

    • DOI

      10.1186/s40623-020-01246-7

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] The 2017 Nishinoshima eruption: combined analysis using Himawari-8 and multiple high-resolution satellite images2019

    • Author(s)
      Kaneko, T., Maeno, F., Yasuda, A., Takeo, M. and Takasaki, K
    • Journal Title

      Earth Planets Space

      Volume: 71 Issue: 1 Pages: 1-18

    • DOI

      10.1186/s40623-019-1121-8

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] ひまわり8号画像による2018年新燃岳噴火の高頻度熱観測2023

    • Author(s)
      金子隆之,安田 敦,市原美恵,堀内拓朗
    • Organizer
      日本火山学会(秋季大会)
    • Related Report
      2023 Annual Research Report
  • [Presentation] Advanced volcano observation using GCOM-C SGLI images: elucidation of the eruptive process and examinations towards operational monitoring2023

    • Author(s)
      Kaneko, T., Yasuda, A., Kajiwara, K. and Fujii T.
    • Organizer
      FY2023 The Joint PI Meeting of JAXA Earth Observation Missions
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Advanced volcano observation using GCOM-C SGLI images: elucidation of the eruptive process and examinations towards operational monitoring2022

    • Author(s)
      Kaneko, T., Yasuda, A., Kajiwara, K. and Fujii T.
    • Organizer
      The Joint PI Meeting of JAXA Earth Observation Missions FY2022
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Volcano observation in Asia-Pacific region by GCOM-C/SGLI images: from detection to real-time analysis of eruption2020

    • Author(s)
      Kaneko, T., Yasuda, A., Kajiwara, K. and Fujii T.
    • Organizer
      JAXA GCOM-C workshop
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Pseudo thermal anomalies in the shortwave infrared bands of the Himawari-8 AHI and their correction for volcano thermal observation2019

    • Author(s)
      金子隆之・安田敦・吉崎徳人・高崎健二・本多嘉明
    • Organizer
      日本地球惑星科学連合2019年大会
    • Related Report
      2019 Research-status Report
  • [Presentation] 衛星によるアジア太平洋域活火山のリアルタイム観測: 「しきさい」(GCOM-C SGLI)によるシステムの開発2019

    • Author(s)
      金子隆之・安田 敦・高崎健二
    • Organizer
      日本火山学会
    • Related Report
      2019 Research-status Report
  • [Book] リモートセンシング事典(海底噴火,火山灰の降灰分布)2022

    • Author(s)
      金子隆之(執筆分担)
    • Total Pages
      758
    • Publisher
      丸善出版
    • ISBN
      9784621307762
    • Related Report
      2022 Research-status Report
  • [Remarks] 衛星データによる アジア・太平洋活火山の 準 リアルタイムモニタリング

    • URL

      http://vrsserv.eri.u-tokyo.ac.jp/realvolc/index.html

    • Related Report
      2022 Research-status Report
  • [Remarks] 衛星データによる アジア太平洋活火山の 準 リアルタイムモニタリング

    • URL

      http://vrsserv.eri.u-tokyo.ac.jp/realvolc/index.html

    • Related Report
      2021 Research-status Report
  • [Remarks] 衛星画像によるアジア太平洋域活火山のリアルタイム観測

    • URL

      http://vrsserv.eri.u-tokyo.ac.jp/realvolc/

    • Related Report
      2020 Research-status Report

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Published: 2019-04-18   Modified: 2025-01-30  

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