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| Titel |
The 6 April 2009 earthquake at L'Aquila: a preliminary analysis of magnetic field measurements |
| VerfasserIn |
U. Villante, M. Lauretis, C. Paulis, P. Francia, A. Piancatelli, E. Pietropaolo, M. Vellante, A. Meloni, P. Palangio, K. Schwingenschuh, G. Prattes, W. Magnes, P. Nenovski |
| 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 ; 10, no. 2 ; Nr. 10, no. 2 (2010-02-09), S.203-214 |
| Datensatznummer |
250007926
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| Publikation (Nr.) |
 copernicus.org/nhess-10-203-2010.pdf |
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| Zusammenfassung |
| Several investigations reported the possible identification of anomalous
geomagnetic field signals prior to earthquake occurrence. In the ULF
frequency range, candidates for precursory signatures have been proposed in
the increase in the noise background and polarization parameter (i.e. the
ratio between the amplitude/power of the vertical component and that one of
the horizontal component), in the changing characteristics of the slope of
the power spectrum and fractal dimension, in the possible occurrence of short
duration pulses. We conducted, with conventional techniques of data
processing, a preliminary analysis of the magnetic field observations
performed at L'Aquila during three months preceding the 6 April 2009
earthquake, focusing attention on the possible occurrence of features similar
to those identified in previous events. Within the limits of this analysis,
we do not find compelling evidence for any of the features which have been
proposed as earthquake precursors: indeed, most of aspects of our
observations (which, in some cases, appear consistent with previous findings)
might be interpreted in terms of the general magnetospheric conditions and/or
of different sources. |
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