Other
Scientific paper
May 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008e%26psl.269..155f&link_type=abstract
Earth and Planetary Science Letters, Volume 269, Issue 1-2, p. 155-163.
Other
Scientific paper
Volcanomagnetic anomalies have been mostly observed during strong eruptions. Our aim is to improve the geomagnetic data analysis to evidence the anomalies occurring in a larger time span, especially in the phases preceding the eruptive events. We developed a time variant statistical approach and applied it to the 2000 2002 Etna geomagnetic temporal series. It is based on an algorithm that statistically predicts the geomagnetic field at the station on the volcanic edifice by that recorded at the remote one. In such a way a number of significant changes in the time series (called statistical innovations), marking the local magnetic field change, were detected. The distribution of such statistical innovations accurately describes the Etna volcanic evolution: we note a progressive increase of the innovation occurrence as the eruptive cycles were approaching and only few and weak innovations at times between the various eruptive cycles. The significance of this analysis is further confirmed by the close agreement among the mean square prediction error, strain release and the volcanic activity behavior. On the contrary, the geomagnetic field at a single station or its difference at two stations do not have any clear correlation with other measured physical quantities. The complex pattern of the prediction error was also investigated by a multifractal analysis. We found that the Holder regularity increases with the intensification of the volcanic activity, implying that innovations tend to be less sporadic and correlated during the major volcanic phases.
Cascone Lorenzo
Del Negro Ciro
Fedi Maurizio
La Manna Mauro
No associations
LandOfFree
Time variant analysis of geomagnetic signals describes the volcanic activity of Mt. Etna between early 2000 and late 2002 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Time variant analysis of geomagnetic signals describes the volcanic activity of Mt. Etna between early 2000 and late 2002, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Time variant analysis of geomagnetic signals describes the volcanic activity of Mt. Etna between early 2000 and late 2002 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1538902