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Remote Detection of the Electric Field Change Induced at the Seismic Wave Front from the Start of Fault Rupturing
Joint Authors
Noda, Yoichi
Takahashi, Kozo
Yazaki, Shinobu
Iitaka, Hiroshi
Fujinawa, Yukio
Source
International Journal of Geophysics
Issue
Vol. 2011, Issue 2011 (31 Dec. 2011), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2011-09-04
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
Seismic waves are generally observed through the measurement of undulating elastic ground motion.
We report the remote detection of the Earth's electric field variations almost simultaneously with the start of fault rupturing at about 100 km from the fault region using a special electric measurement.
The rare but repeated detection indicates that the phenomenon is real.
The characteristic time of diffusion is almost instantaneous, that is, less than 1 second to travel 100 km, more than ten times faster than ordinary seismic P wave propagation.
We suggest that the measured electric field changes are produced by the electrokinetic effect through increased pore water pressure of the seismic pulse.
It is also suggested that the long range propagation is due to the surface wave mode confined near the interface of the different conductivity.
The length scale of the finite strength of the electric field is 16 km, 160 km for electric conductivity of 0.01, 0.001, Sm−1, respectively.
This phenomenon suggests a new seismic sensing method and a new earthquake early warning system providing more seconds of lead time.
American Psychological Association (APA)
Fujinawa, Yukio& Takahashi, Kozo& Noda, Yoichi& Iitaka, Hiroshi& Yazaki, Shinobu. 2011. Remote Detection of the Electric Field Change Induced at the Seismic Wave Front from the Start of Fault Rupturing. International Journal of Geophysics،Vol. 2011, no. 2011, pp.1-11.
https://search.emarefa.net/detail/BIM-495926
Modern Language Association (MLA)
Fujinawa, Yukio…[et al.]. Remote Detection of the Electric Field Change Induced at the Seismic Wave Front from the Start of Fault Rupturing. International Journal of Geophysics No. 2011 (2011), pp.1-11.
https://search.emarefa.net/detail/BIM-495926
American Medical Association (AMA)
Fujinawa, Yukio& Takahashi, Kozo& Noda, Yoichi& Iitaka, Hiroshi& Yazaki, Shinobu. Remote Detection of the Electric Field Change Induced at the Seismic Wave Front from the Start of Fault Rupturing. International Journal of Geophysics. 2011. Vol. 2011, no. 2011, pp.1-11.
https://search.emarefa.net/detail/BIM-495926
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-495926