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| Titel |
Magnetic anomalies possibly linked to local low seismicity |
| VerfasserIn |
F. Masci, P. Palangio, M. Di Persio |
| 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 ; 9, no. 5 ; Nr. 9, no. 5 (2009-09-18), S.1567-1572 |
| Datensatznummer |
250006979
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| Publikation (Nr.) |
 copernicus.org/nhess-9-1567-2009.pdf |
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| Zusammenfassung |
| During the last twenty years a time-synchronized network of magnetometers has
operated in Central Italy along the Apennine chain to monitor the magnetic
field anomalies eventually related to the tectonic activity. At present time
the network consists of five stations. In the past only few anomalies in the
local geomagnetic field, possibly associated to earthquakes, has been
observed, not least because the network area has shown a low-moderate seismic
activity with the epicentres of the few events with Ml≥5 located away
from the network station. During 2007 two Ml≈4 earthquakes occurred
in proximity of two stations of the network. Here we report the magnetic
anomalies in the geomagnetic field that could be related with these tectonic
events. To better investigate these two events a study of ULF
(ultra-low-frequency) emissions has been carried out on the geomagnetic field
components H, D, and Z measured in L'Aquila Observatory during the period
from January 2006 to December 2008. We want to stress that this paper refers
to the period before the 2009 L'Aquila seismic sequence which main shock
(Ml=5.8) of 6 April heavily damaged the medieval centre of the city and
surroundings. At present time the analysis of the 2009 data is in progress. |
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