Sensors 2007, 7(7), 1108-1122; doi:10.3390/s7071108
Article

Monitoring of ULF (Ultra-Low-Frequency) Geomagnetic Variations Associated with Earthquakes

1,* email, 2email and 3email
Received: 14 June 2007; Accepted: 26 June 2007 / Published: 4 July 2007
(This article belongs to the Special Issue Sensors for Disaster and Emergency Management Decision Making)
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: ULF (ultra-low-frequency) electromagnetic emission is recently recognized as one of the most promising candidates for short-term earthquake prediction. This paper reviews previous convincing evidence on the presence of ULF emissions before a few large earthquakes. Then, we present our network of ULF monitoring in the Tokyo area by describing our ULF magnetic sensors and we finally present a few, latest results on seismogenic electromagnetic emissions for recent large earthquakes with the use of sophisticated signal processings.
Keywords: Seismogenic ULF emissions; earthquake prediction; magnetic sensors; signal processing
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MDPI and ACS Style

Hayakawa, M.; Hattori, K.; Ohta, K. Monitoring of ULF (Ultra-Low-Frequency) Geomagnetic Variations Associated with Earthquakes. Sensors 2007, 7, 1108-1122.

AMA Style

Hayakawa M, Hattori K, Ohta K. Monitoring of ULF (Ultra-Low-Frequency) Geomagnetic Variations Associated with Earthquakes. Sensors. 2007; 7(7):1108-1122.

Chicago/Turabian Style

Hayakawa, Masashi; Hattori, Katsumi; Ohta, Kenji. 2007. "Monitoring of ULF (Ultra-Low-Frequency) Geomagnetic Variations Associated with Earthquakes." Sensors 7, no. 7: 1108-1122.

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