Observation of Pressure Stimulated Voltages in rocks using an Electric Potential Sensor

Aydin, Ahmet, Prance, R J, Prance, H and Harland, C J (2009) Observation of Pressure Stimulated Voltages in rocks using an Electric Potential Sensor. Applied Physics Letters, 95 (12). ISSN 0003-6951

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Abstract

Recent interest in the electrical activity in rock and the use of electric field transients as candidates for earthquake precursors has led to studies of pressure stimulated currents in laboratory samples. In this paper, an electric field sensor is used to measure directly the voltages associated with these currents. Stress was applied as uniaxial compression to marble and granite at an approximately constant rate. In contrast with the small pressure stimulated currents previously measured, large voltage signals are reported. Polarity reversal of the signal was observed immediately before fracture for the marble, in agreement with previous pressure stimulated current studies.

Item Type: Article
Schools and Departments: School of Engineering and Informatics > Engineering and Design
Depositing User: Ahmet Aydin
Date Deposited: 06 Feb 2012 18:18
Last Modified: 01 Apr 2017 06:37
URI: http://sro.sussex.ac.uk/id/eprint/15658

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