| Project/Area Number |
07555613
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 展開研究 |
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| Research Field |
資源開発工学
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| Research Institution | KYUSHU UNIVERSITY |
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Principal Investigator |
MOGI Toru Faculty of Engineering, Kyushu University, Associate Researcher, 工学部, 助手 (80182161)
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| Co-Investigator(Kenkyū-buntansha) |
MORIKAWA Takeo Geosience Division, Dowa Engineering Co. Ltd., Manager, 調査部, 課長
KUSUNOKI Ken'ichiro Central Research Institute of Electric Power Industry, Chief Researcher, 地質地盤部, 主任研究員
TANAKA Yoshikazu Faculty of Science, Kyoto University, Associate Professor, 理学部, 助教授 (00025420)
FUJIMITSU Yashuhiro Faculty of Engineering, Kyushu University, Associate Professor, 工学部, 助教授 (10264095)
EHARA Sachio Faculty of Engineering, Kyushu University, Professor, 工学部, 教授 (10002346)
楠 健一郎 (財)電力中央研究所, 地質地盤部, 主任研究員
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| Project Period (FY) |
1995 – 1997
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| Project Status |
Completed (Fiscal Year 1997)
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| Budget Amount *help |
¥3,100,000 (Direct Cost: ¥3,100,000)
Fiscal Year 1997: ¥1,300,000 (Direct Cost: ¥1,300,000)
Fiscal Year 1996: ¥1,800,000 (Direct Cost: ¥1,800,000)
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| Keywords | airborne survey / Electromagnetic survey / magnetic survey / infrared images / geothermal exploration / 地熱調査 |
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| Research Abstract |
We conducted fundamental study for improving the depth of investigation, resolving ability and accuracy of airborne electromagnetic, magnetic and infrared image survey aiming at practical application for a geothermal survey. The study was carried out to investigate practically some issues through field survey using helicopter at some geothermal fields. The major results of each method was indicated as follows.
As for the airborne electromagnetic, we developed instrument and data processing method of grounded electrical source airborne electromagnetic to increase the depth of investigation up to several kilometers. To observe magnetic response of the ground in the air, we developed high accuracy flux-gate magnetometer. The fiber optic gyros attached to the attitude measurement equipment was used to measure pitch and roll of the magnetometer, which were using collection of the motion of magnetometer. We obtained expected data using practical set up in the field test survey.
We improved proton magnetometer to detect small magnetic field change due to geothermal structure with the airborne magnetic survey. We also developed the method measuring vertical gradient of the field. To increase the accuracy, we developed new circuit for exciting strong proton signal. And we contrived a circuit to adjust timing of measurement between magnetic and electromagnetic methods.
To improve the accuracy of estimating heat discharge using airborne infrared image, we investigated characteristics of the data obtained in the air in comparison with surface data. We also developed data processing method for wide data.
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