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Effect of volcanic ash on water quality of rainfall, stream and spring water

Research Project

Project/Area Number 05660170
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field 林学
Research InstitutionKagoshima University

Principal Investigator

JITOUSONO Takashi  Kagoshima University, Faculty of Agriculture, Associate professor, 農学部, 助教授 (50145455)

Co-Investigator(Kenkyū-buntansha) SHIMOKAWA Etsuro  Kagoshima University, Faculty of Agriculture, professor, 農学部, 教授 (60041670)
Project Period (FY) 1993 – 1995
Project Status Completed (Fiscal Year 1995)
Budget Amount *help
¥2,200,000 (Direct Cost: ¥2,200,000)
Fiscal Year 1995: ¥400,000 (Direct Cost: ¥400,000)
Fiscal Year 1994: ¥400,000 (Direct Cost: ¥400,000)
Fiscal Year 1993: ¥1,400,000 (Direct Cost: ¥1,400,000)
KeywordsEmission of ash / Sakurajima Volcano / Potential of Hydrogen / Rainfall / Stream water / Spring water / Volcanic ash
Research Abstract

Sakurajima, a volcano standing amidst the Kagoshima Bay in southern Kyushu, Japan, has been characterized by the explosive volcanic activity. Sakurajima Volcano has erupted continuously with emission of ash since 1955. As the result, the forested watersheds around Sakurajima Volcano are covered with volcanic ash. The deposits of volcanic ash in the forested watersheds cause lowering of infiltration capacity, increase of surface runoff and rapid progress of erosion. The surface runoff on ash-covered hillslope was launched simultaneously with the rainfall intensity exceeding 1.5-2.0mm in ten minutes. Moreover, the deposits of volcanic ash effect on water quality of stream and spring water.
We have carried out some hydrological observations in the forested watershed covered with volcanic ash in the Takakuma experimental forest, Kagoshima University. The purpose of these observations is to understand effect of volcanic ash on water quality of stream. The results obtained by the analyzes of the hydrologic data observed in 1994 and 1995 are summarized as follows :
1. The pH in the stream water was within the value-range from 6.8 to 6.9 during the fewer volcanic eruptions. On the other hard, the pH during the more frequent volcanic eruptions was within the value-range from 6.6 to 6.8.
2. The pH in the stream water depend on the volcanic activity.

Report

(4 results)
  • 1995 Annual Research Report   Final Research Report Summary
  • 1994 Annual Research Report
  • 1993 Annual Research Report
  • Research Products

    (19 results)

All Other

All Publications (19 results)

  • [Publications] 地頭薗 隆: "鹿児島大学農学部附属高隈演習林気象報告(1992〜1993年)" 鹿児島大学農学部演習林報告. 22. 79-119 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 地頭薗 隆: "鹿児島大学農学部附属高隈演習林気象報告(1994年)" 鹿児島大学農学部演習林報告. 23. 113-149 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 地頭薗 隆: "鹿児島大学農学部附属高隈演習林気象報告(1995年)" 鹿児島大学農学部演習林報告. 24(印刷中). (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 馬田 英隆: "鹿児島大学農学部附属高隈演習林における森林樹木のフェノロジー調査" 鹿児島大学農学部演習林報告. 24(準備中). (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 地頭薗 隆: "火山活動に伴う火山灰が森林流域の河川水のpH値に及ぼす影響" 鹿児島大学農学部演習林報告. 25(印刷中). (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Jitousono, Takashi: "Meteorological Observations in the Takakuma Experimental Forest, Kagoshima University (1992-1993)" Bulletin of the Kagoshima University Forests. No.22. 79-119 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Jitousono, Takashi: "Meteorological Observations in the Takakuma Experimental Forest, Kagoshima University (1994)" Bulletin of the Kagoshima University Forests. No.23. 113-149 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Jitousono, Takashi: "Meteorological Observations in the Takakuma Experimental Forest, Kagoshima University (1995)" Bulletin of the Kagoshima University Forests. No.24 (in press). (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] UMATA,Hidetaka: "Observations of solar radiation in Forests in the Takakuma Experimental Forest, Kagoshima University" Bulletin of the Kagoshima University Forests. No.24 (in press). (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Jitousono, Takashi: "Effect of volcanic ash on the pH in the stream water in the forested watershed around Sakurajima Volcano" Bulletin of the Kagoshima University Forests. No.25 (in preparation). (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 地頭薗隆: "桜島火山灰が周辺山地の流出に及ぼす影響の経年変化" 第49回日本林学会九州支部研究発表. (口頭発表). (1993)

    • Related Report
      1995 Annual Research Report
  • [Publications] 地頭薗隆: "鹿児島大学農学部附属高隈演習林気象報告(1992〜1993年)" 鹿児島大学農学部演習林報告. 22. 79-119 (1994)

    • Related Report
      1995 Annual Research Report
  • [Publications] 地頭薗隆: "鹿児島大学農学部附属高隈演習林気象報告(1994年)" 鹿児島大学農学部演習林報告. 23. 113-149 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 地頭薗隆: "鹿児島大学農学部附属高隈演習林気象報告(1995年)" 鹿児島大学農学部演習林報告. (予定). (1996)

    • Related Report
      1995 Annual Research Report
  • [Publications] 地頭薗隆: "火山活動に伴う火山灰が森林流域の河川水のpH値に及ぼす影響" 鹿児島大学農学部演習林報告. (予定). (1997)

    • Related Report
      1995 Annual Research Report
  • [Publications] 地頭薗 隆: "桜島火山灰が周辺山地の流出に及ぼす影響の経年変化" 第49回日本林学会九州支部研究発表. (口頭発表). (1993)

    • Related Report
      1994 Annual Research Report
  • [Publications] 地頭薗 隆: "鹿児島大学農学部附属高隈演習林気象報告" 鹿児島大学農学部演習林報告. 22. 79-119 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 地頭薗隆: "桜島火山灰が周辺山地の流出に及ぼす影響の経年変化" 第49回日本林学会九州支部研究発表. (口頭発表). (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] 地頭薗隆: "桜島火山灰が雨水のpH値に及ぼす影響" 日本林学会九州支部研究発表. (予定). (1994)

    • Related Report
      1993 Annual Research Report

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Published: 1993-04-01   Modified: 2016-04-21  

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