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| Titel |
Multifractality in local geomagnetic field at Etna volcano, Sicily (southern Italy) |
| VerfasserIn |
G. Currenti, C. Negro, V. Lapenna, L. Telesca |
| 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 ; 5, no. 4 ; Nr. 5, no. 4 (2005-07-29), S.555-559 |
| Datensatznummer |
250002650
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| Publikation (Nr.) |
 copernicus.org/nhess-5-555-2005.pdf |
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| Zusammenfassung |
| We applied the Multifractal Detrended Fluctuation Analysis (MF-DFA), which
allows to detect multifractality in nonstationary signals, to the hourly
means of local geomagnetic field recorded at Mt. Etna volcano (southern
Italy). We studied the signal measured at one geomagnetic station, installed
at the summit of volcano, which was characterized by a strong eruption on
27 October 2002. We analyzed two frames of signals, one measured before the
eruption and the other after, in order to evaluate dynamical changes induced
by the eruptive event. Our findings show that: i) the geomagnetic time
series is multifractal; ii) the multifractal degree of the signal decreases
after the occurrence of eruption. This study aims to propose another
approach to investigate the complex dynamics of volcano-related geomagnetic
field. |
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