Investigation of mechano-luminescence of rocks and its possibility of earthquake prediction

• Project/Area Number: 23656075
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Materials/Mechanics of materials
• Research Institution: Tohoku University
• Principal Investigator: SOYAMA Hitoshi 東北大学, 大学院・工学研究科, 教授 (90211995)
• Project Period (FY): 2011 – 2012
• Project Status: Completed (Fiscal Year 2012)
• Budget Amount: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000); Fiscal Year 2012: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2011: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
• Keywords: 岩石 / メカノルミネッセンス / 石英 / X 線回折 / 窒素 / 引張り応力 / すべり摩擦 / X線回折

Research Abstract

Mechano-luminescence of rocks induced by friction test and tensile test was evaluated. It was observed that the concluded that luminescence intensity of the rocks with large containing quartz was more intense and the peak at 370 nm which corresponds to the second positive band of nitrogen was observed by the rock in nitrogen gas. It was concluded that the mechano-luminescence of rocks was induced by piezoelectric effect and plasma of ambient gas.

Research Products

• [Presentation] 岩石のメカノルミネッセンスの分光分析 (2012)
  • Author(s): 祖山均,宮坂晃輔
  • Organizer: 第6回ケミルネッセンス研究会
  • Place of Presentation: 東京(招待講演)
  • Year and Date: 2012-12-07
• [Presentation] 岩石のメカノルミネッセンスのスペクトルにおける雰囲気ガスの影響 (2012)
  • Author(s): 宮坂晃輔,祖山均
  • Organizer: 日本機械学会東北支部第48期秋季講演会
  • Place of Presentation: 八戸
  • Year and Date: 2012-09-22
• [Presentation] 岩石のメカノルミネッセンスにおける雰囲気ガスの影響 (2012)
  • Author(s): 宮坂晃輔,祖山均
  • Organizer: 日本機械学会東北支部第47期総会・講演会
  • Place of Presentation: 仙台
  • Year and Date: 2012-03-13
• [Presentation] 岩石のメカノルミネッセンスの分光分析 (2012)
  • Author(s): 祖山 均，宮坂 晃輔
  • Organizer: 第6回ケミルネッセンス研究会
  • Place of Presentation: 東京
  • Invited
• [Presentation] 岩石のメカノルミネッセンスにおける雰囲気ガスの影響
  • Author(s): 宮坂 晃輔，祖山 均
  • Organizer: 日本機械学会東北支部 第47 期総会・講演会
  • Place of Presentation: 仙台
• [Remarks]
  • URL: http://www.mm.mech.tohoku.ac.jp/menu4/theme14.html
• [Remarks] 岩石のメカノルミネッセンス
  • URL: http://www.mm.mech.tohoku.ac.jp/menu4/theme14.html
• [Remarks]
  • URL: http://www.mm.mech.tohoku.ac.jp/menu4/theme14.html