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Relationship between spring water and slope failures occurred in a volcanic hillslope terrain under heavy rainfall

Research Project

Project/Area Number 23651175
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Natural disaster science
Research InstitutionForestry and Forest Products Research Institute

Principal Investigator

OGAWA Yasuhiro  独立行政法人森林総合研究所, 水土保全研究領域, 主任研究員 (50353628)

Project Period (FY) 2011 – 2012
Project Status Completed (Fiscal Year 2012)
Budget Amount *help
¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2012: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2011: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywords火山災害 / 大規模崩壊 / 雲仙普賢岳 / 土石流 / 地下水湧出 / 崩壊
Research Abstract

In order to clarify a relationship between spring water generated by heavy rainfall and large-scale collapse in the hillslope of post-eruption Unzen volcano, we took remote and close-up picture of spring water with a digital interval camera. A consequence was that severe gully erosion (2 or 5m in depth) at spring points occurred in the torrential rain of June 24, 2012. The observation result suggests slope stability of the volcano should be unstable under heavy rainfall.

Report

(3 results)
  • 2012 Annual Research Report   Final Research Report ( PDF )
  • 2011 Research-status Report
  • Research Products

    (3 results)

All 2012 Other

All Presentation (2 results) Remarks (1 results)

  • [Presentation] 雲仙普賢岳南東斜面の土石流発生域に見られる湧水について2012

    • Author(s)
      小川泰浩
    • Organizer
      日本緑化工学会・日本景観生態学会・応用生態工学会(ELR2012)
    • Place of Presentation
      東京農業大学世田谷キャンパス(東京都世田谷区)(講演要旨集)
    • Year and Date
      2012-09-09
    • Related Report
      2012 Final Research Report
  • [Presentation] 雲仙普賢岳南東斜面の土石流発生域に見られる湧水について

    • Author(s)
      小川泰浩
    • Organizer
      日本緑化工学会・日本景観生態学会・応用生態工学会(ELR2012)講演要旨集、249.
    • Place of Presentation
      東京農業大学
    • Related Report
      2012 Annual Research Report
  • [Remarks] 小川泰浩、集中豪雨時に火山地域で発生する地下水湧出と大規模崩壊の関連性の解明、平成24 年版年報、森林総合研究所、215. 、2013 年03 月

    • URL

      http://www.ffpri.affrc.go.jp/pubs/nenpo/

    • Related Report
      2012 Final Research Report

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Published: 2011-08-05   Modified: 2019-07-29  

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