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1999 Fiscal Year Final Research Report Summary

Investigation of the Earthquake Prediction by the observation of Groundwater Radon Concentration at the Kamioka Mine, Gifu Prefecture

Research Project

Project/Area Number 09440104
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field 素粒子・核・宇宙線
Research InstitutionGifu University

Principal Investigator

TASAKA Shigeki  Faculty of Education, Gifu University, Professor, 教育学部, 教授 (60155059)

Co-Investigator(Kenkyū-buntansha) MATSUBARA Masaya  Faculty of Education, Gifu University, Assistant, 教育学部, 助手 (80281046)
SASAKI Yoshimi  Faculty of Education, Gifu University, Professor, 教育学部, 教授 (40021307)
Project Period (FY) 1997 – 1999
KeywordsRadon / Groundwater Radon Concentration / Earthquake Prediction / Groundwater Flow rate / Groundwater Temperature / Radon Detector / Active Fault / World Wide Web
Research Abstract

Gifu prefecture is located in the middle of Japan, and there are many active faults. We have carried out continuous monitoring of radon concentration, water flow rate, water temperature at 20 wells. We observed groundwater at the Wariishi hot spring, Kamioka, Gifu Prefecture. We made clear the relationship between the change of groundwater flow and the occurrence of earthquakes by using geological method. The average of radon concentration of the Wariishi hot spring was 2.54Bq/l with a liquid scintillation method. It is obvious from the analysis of the water flow rate using the BAYTAP-G that the water flow rate at the Wariishi hot spring has periodic fluctuations mainly induced by the Earth's tides. The water temperature went down by about 1 degree at the Wariishi hot spring eight hours before the series of earthquakes at the Nagano and Gifu boundary. And there was co-seismic phenomena at the Wariishi hot spring, where the water temperature went up about 1.5degrees, and the water flow rate increased by 79 liters per minute, from 57 liters per minute, after the Hida region Earthquake which had a magnitude of 5.4. The magnitude M is related to the distance Δ from the epicenter. As a result of the change of the water flow rate, when the three earthquakes, each of which had a magnitude of more than 6.6, and this earthquke occurred, the equality Mc ≧ 2.3log Δ +1.5 arose. Consequently the analysis of water flow rate demonstrated that the phase of KィイD21ィエD2, amplitude of OィイD21ィエD2 and KィイD21ィエD2 changed after this earthquake.

  • Research Products

    (10 results)

All Other

All Publications (10 results)

  • [Publications] 高田広彦、田阪茂樹、佐々木嘉三他: "岐阜県割石温泉における地下水の観測"岐阜大学教育学部研究報告=自然科学=. 24・2. 70-77 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 松原正也、田阪茂樹、佐々木嘉三: "World Wide Webを用いた地下水地ラドンデータ表示システムの構築"岐阜大学教育学部研究報告=自然科学=. 24・2. 41-46 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 佐々木嘉三、野上英一、田阪茂樹: "岐阜県上宝村地滑り地帯における地下水中ラドン濃度測定"岐阜大学教育学部研究報告=自然科学=. 24・2. 15-21 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Y.Takeuchi, et al: "Development of high sensitivity radon detectors"Nuclear Instruments and metheds in physics Research. A421. 334-341 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] H.Ui, S.Tasaka, M.Hayashi, K.Osada: "Preliminary Results from Radon Observation at SYOWA station, Antarctica, during 1996"Polar Meteorology and Glaciology. No.12. 112-123 (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] H. Takada, S. Tasaka, Y. Sasaki, Y. Matsubara, D. Muto: "Observation of Groundwater at the Wariishi Hot Spring, Gifu prefecture"Sci. Rep. Fac. Educ. Gifu univ. (Nat. Sci.). Vol. 24, No. 2. 69-77 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Y. Matsubara, S. Tasaka, Y. Sasaki: "Construction of a Ground-water radon Monitoring System on World Wide Web"Sci. Rep. Fac. Educ. Gifu univ. (Nat. Sci.). Vol. 24, No. 2. 41-46 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Y. Sasaki, H. Takada, S. Tasaka: "Observation of Groundwater Radon Concentration at Landslide Area, Kamitakara, Northern Part of Gifu Prefecture"Sci. Rep. Fac. Educ. Gifu univ. (Nat. Sci.). Vol. 24, No. 2. 15-21 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Y. Takeuchi, S. Tasaka et al.: "Development of high sensitivity radon detectors"Nuclear instruments and methods in physics Research. A421. 334-341 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H. Ui, S. Tasaka, M. Hayashi, K. Okada: "Preliminary results from Radon Observation at SYOWA satation, Antarctica, during 1996"Polar Meteorology and Glaciology. No. 12. 112-123 (1998)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2001-10-23  

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