![](/images/graphics-bg.png)
Changes in Electrokinetic Coupling Coefficients of Granite under Triaxial Deformation
Joint Authors
Source
International Journal of Geophysics
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-03-01
Country of Publication
Egypt
No. of Pages
12
Main Subjects
Abstract EN
Electrokinetic phenomena are believed to be the most likely origin of electromagnetic signals preceding or accompanying earthquakes.
The intensity of the source current due to the electrokinetic phenomena is determined by the fluid flux and the electrokinetic coupling coefficient called streaming current coefficient; therefore, how the coefficient changes before rupture is essential.
Here, we show how the electrokinetic coefficients change during the rock deformation experiment up to failure.
The streaming current coefficient did not increase before failure, but continued to decrease up to failure, which is explained in terms of the elastic closure of capillary.
On the other hand, the streaming potential coefficient, which is the product of the streaming current coefficient and bulk resistivity of the rock, increased at the onset of dilatancy.
It may be due to change in bulk resistivity.
Our result indicates that the zeta potential of the newly created surface does not change so much from that of the preexisting fluid rock interface.
American Psychological Association (APA)
Kuwano, Osamu& Yoshida, Shingo. 2012. Changes in Electrokinetic Coupling Coefficients of Granite under Triaxial Deformation. International Journal of Geophysics،Vol. 2012, no. 2012, pp.1-12.
https://search.emarefa.net/detail/BIM-460817
Modern Language Association (MLA)
Kuwano, Osamu& Yoshida, Shingo. Changes in Electrokinetic Coupling Coefficients of Granite under Triaxial Deformation. International Journal of Geophysics No. 2012 (2012), pp.1-12.
https://search.emarefa.net/detail/BIM-460817
American Medical Association (AMA)
Kuwano, Osamu& Yoshida, Shingo. Changes in Electrokinetic Coupling Coefficients of Granite under Triaxial Deformation. International Journal of Geophysics. 2012. Vol. 2012, no. 2012, pp.1-12.
https://search.emarefa.net/detail/BIM-460817
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-460817