Multifractality in local geomagnetic field at Etna volcano, Sicily (southern Italy)
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...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2005-01-01
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| Series: | Natural Hazards and Earth System Sciences |
| Online Access: | http://www.nat-hazards-earth-syst-sci.net/5/555/2005/nhess-5-555-2005.pdf |
| _version_ | 1818571141646647296 |
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| author | G. Currenti C. del Negro V. Lapenna L. Telesca |
| author_facet | G. Currenti C. del Negro V. Lapenna L. Telesca |
| author_sort | G. Currenti |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-12-14T13:51:47Z |
| format | Article |
| id | doaj.art-f065e4dbb346436b92b5580a43991f92 |
| institution | Directory Open Access Journal |
| issn | 1561-8633 1684-9981 |
| language | English |
| last_indexed | 2024-12-14T13:51:47Z |
| publishDate | 2005-01-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Natural Hazards and Earth System Sciences |
| spelling | doaj.art-f065e4dbb346436b92b5580a43991f922022-12-21T22:59:03ZengCopernicus PublicationsNatural Hazards and Earth System Sciences1561-86331684-99812005-01-0154555559Multifractality in local geomagnetic field at Etna volcano, Sicily (southern Italy)G. CurrentiC. del NegroV. LapennaL. TelescaWe 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.http://www.nat-hazards-earth-syst-sci.net/5/555/2005/nhess-5-555-2005.pdf |
| spellingShingle | G. Currenti C. del Negro V. Lapenna L. Telesca Multifractality in local geomagnetic field at Etna volcano, Sicily (southern Italy) Natural Hazards and Earth System Sciences |
| title | Multifractality in local geomagnetic field at Etna volcano, Sicily (southern Italy) |
| title_full | Multifractality in local geomagnetic field at Etna volcano, Sicily (southern Italy) |
| title_fullStr | Multifractality in local geomagnetic field at Etna volcano, Sicily (southern Italy) |
| title_full_unstemmed | Multifractality in local geomagnetic field at Etna volcano, Sicily (southern Italy) |
| title_short | Multifractality in local geomagnetic field at Etna volcano, Sicily (southern Italy) |
| title_sort | multifractality in local geomagnetic field at etna volcano sicily southern italy |
| url | http://www.nat-hazards-earth-syst-sci.net/5/555/2005/nhess-5-555-2005.pdf |
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