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

journal contribution
posted on 2023-06-07, 19:31 authored by Ahmet Aydin, Robert Prance, H Prance, C J Harland
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.

History

Publication status

  • Published

Journal

Applied Physics Letters

ISSN

0003-6951

Issue

12

Volume

95

Pages

3.0

Department affiliated with

  • Engineering and Design Publications

Full text available

  • No

Peer reviewed?

  • Yes

Legacy Posted Date

2012-02-06

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