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Positive electrification on the floor of an underground mine gallery at the arrival of seismic waves and similar electrification on the surface of partially stressed rocks in laboratory

2010; Wiley; Volume: 22; Issue: 3 Linguagem: Inglês

10.1111/j.1365-3121.2010.00935.x

1365-3121

Akihiro Takeuchi, Yukako Futada, Kan Okubo, Nobunao Takeuchi,

Seismology and Earthquake Studies

Terra NovaVolume 22, Issue 3 p. 203-207 Positive electrification on the floor of an underground mine gallery at the arrival of seismic waves and similar electrification on the surface of partially stressed rocks in laboratory Akihiro Takeuchi, Akihiro Takeuchi Earthquake Prediction Research Center, Institute of Oceanic Research and Development, Tokai University, 3-20-1 Orido, Shimizu-ku, Shizuoka 424-8610, JapanSearch for more papers by this authorYukako Futada, Yukako Futada Department of Electronic and Information Systems, Faculty of Systems Science and Technology, Akita Prefectural University, 84-4 Tsuchiya-Aza-Ebinokuchi, Yurihonjo 015-0055, JapanSearch for more papers by this authorKan Okubo, Kan Okubo Division of Information and Communications Systems Engineering, Tokyo Metropolitan University, 6-6 Asahigaoka, Hino 191-0065, JapanSearch for more papers by this authorNobunao Takeuchi, Nobunao Takeuchi Department of Electronic and Information Systems, Faculty of Systems Science and Technology, Akita Prefectural University, 84-4 Tsuchiya-Aza-Ebinokuchi, Yurihonjo 015-0055, JapanSearch for more papers by this author Akihiro Takeuchi, Akihiro Takeuchi Earthquake Prediction Research Center, Institute of Oceanic Research and Development, Tokai University, 3-20-1 Orido, Shimizu-ku, Shizuoka 424-8610, JapanSearch for more papers by this authorYukako Futada, Yukako Futada Department of Electronic and Information Systems, Faculty of Systems Science and Technology, Akita Prefectural University, 84-4 Tsuchiya-Aza-Ebinokuchi, Yurihonjo 015-0055, JapanSearch for more papers by this authorKan Okubo, Kan Okubo Division of Information and Communications Systems Engineering, Tokyo Metropolitan University, 6-6 Asahigaoka, Hino 191-0065, JapanSearch for more papers by this authorNobunao Takeuchi, Nobunao Takeuchi Department of Electronic and Information Systems, Faculty of Systems Science and Technology, Akita Prefectural University, 84-4 Tsuchiya-Aza-Ebinokuchi, Yurihonjo 015-0055, JapanSearch for more papers by this author First published: 11 May 2010 https://doi.org/10.1111/j.1365-3121.2010.00935.xCitations: 10 Dr Akihiro Takeuchi, Earthquake Prediction Research Center, Institute of Oceanic Research and Development, Tokai University, 3-20-1 Orido, Shimizu-ku, Shizuoka 424-8610, Japan. Tel.: +81 54 337 0946; fax: +81 54 336 0920; e-mail: atakeuchi@sems-tokaiuniv.jp Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat Abstract Terra Nova, 22, 203–207, 2010 Abstract A large plate electrode in a mine gallery detected electric signals when seismic waves arrived. This signal is equivalent to the generation of an electric field with the upward negative and the downward positive. One possible reason for detection of the electric field is a positive electrification of the floor. Here, we studied such electrification in the laboratory using an andesite block quarried from the same mine. When partially loaded at one end, the block exhibits positive electrification on the surface of the other unstressed end. The activation of positive hole charge carriers reasonably explain the laboratory results. The positive holes are activated by breaking peroxy bonds, a common type of lattice defects in igneous rock-forming minerals. The positive holes spread to the surface, thereby causing the electric field. The same charge carriers may be activated upon arrival of seismic waves. Citing Literature Volume22, Issue3June 2010Pages 203-207 RelatedInformation