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| Titel |
Statistical features of seismoelectric signals prior to M7.4 Guerrero-Oaxaca earthquake (México) |
| VerfasserIn |
A. Ramírez-Rojas, E. L. Flores-Márquez, L. Guzmán-Vargas, G. Gálvez-Coyt, L. Telesca, F. Angulo-Brown |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1561-8633
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| Digitales Dokument |
URL |
| Erschienen |
In: Natural Hazards and Earth System Science ; 8, no. 5 ; Nr. 8, no. 5 (2008-09-12), S.1001-1007 |
| Datensatznummer |
250005764
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| Publikation (Nr.) |
 copernicus.org/nhess-8-1001-2008.pdf |
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| Zusammenfassung |
| In this paper a statistical analysis of seismoelectric ULF signals prior to
the M7.4 Guerrero-Oaxaca earthquake (EQ) occurred at the Mexican Pacific
coast on 14 September 1995, has been performed. The signals were
simultaneously recorded at three monitoring stations from the last months of
1994 until July of 1996. The nonlinear time series methods of Higuchi
fractal dimension (HFD) and detrended fluctuation analysis (DFA) have been
used. In the three data sets we found some complex dynamical behaviors that
seemingly reflect a relaxation-EQ preparation-main shock-relaxation process.
In particular, clear spike-like anomalies in both DFA- and HFD-exponents
some months before the main shock are revealed. |
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