Electric and ionic environmental circumstances interacting at Hosokura underground mine in northeast Japan (特集:Electromagnetic Technologies for Forecasting and Monitoring Natural Hazards)
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概要
- 論文の詳細を見る
We built an observational system in the Hosokura underground mine in northeast Japan. An underground laboratory for setting up equipment is located ∼1.5 km from the main gallery entrance and ∼70 m below the surface. To detect electric signals related to earthquakes, volcanic eruptions, and/or land slides, the room contains sensors for seismic waves, electric potentials, electric fields, air ion concentrations, air temperature, and air humidity. Long-term observations with a GPS-synchronized clock have identified daily and seasonal changes in the background levels of the quasi-static electric field and the air ion concentration, probably related to air movement in and out of the mine through the shaft near our laboratory. The background electric field may be caused by a bias distribution of negative and positive air ions.
- 社団法人 電気学会の論文
- 2009-12-01
著者
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WATANABE Shun
Department of Marine Bioscience, Ocean Research Institute, The University of Tokyo
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Nakamura Yukinobu
Hosokura Metal Mining Co. Ltd.
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Okubo Kan
Division Of Information And Communications Systems Engineering Tokyo Metropolitan University
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Okubo Kan
Division Of Information And Communications System Engineering Tokyo Metropolitan University
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TAKEUCHI Nobunao
Department of Electrical Engineering, Faculty of Engineering, Tohoku University
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Takeuchi Nobunao
Department Of Electronic And Information Systems Faculty Of Systems Science And Technology Akita Pre
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Takeuchi Nobunao
Department Of Electrical Engineering Faculty Of Engineering Tohoku Universicy
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TAKEUCHI Akihiro
Earthquake Prediction Research Center, Institute of Oceanic Research and Development, Tokai Universi
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Watanabe Shun
Department Of Information Science And Intelligent Systems Tokushima University
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Takeuchi Akihiro
Earthquake Prediction Research Center Institute Of Oceanic Research And Development Tokai University
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Watanabe Shun
Department Of Electronic And Information Systems Faculty Of Systems Science And Technology Akita Pre
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Watanabe Shun
Department Molecular Cell Signaling Tokyo Metropolitan Institute For Neuroscience
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Okubo Kan
Division of Information and Communications Systems Engineering, Tokyo Metropolitan University
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Okubo Kan
Division of Information and Communication Systems, Tokyo Metropolitan University, Hino, Tokyo 191-0065, Japan
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