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| Titel |
Temporary seismic monitoring of the Sulmona area (Abruzzo, Italy): a quality study of microearthquake locations |
| VerfasserIn |
M. A. Romano, R. Nardis, M. Garbin, L. Peruzza, E. Priolo, G. Lavecchia, M. Romanelli |
| 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 ; 13, no. 11 ; Nr. 13, no. 11 (2013-11-05), S.2727-2744 |
| Datensatznummer |
250085546
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| Publikation (Nr.) |
 copernicus.org/nhess-13-2727-2013.pdf |
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| Zusammenfassung |
| Thanks to the installation of a temporary seismic network, a microseismicity
study has been conducted in the Sulmona area (Abruzzo, Italy) with the aim
of increasing the knowledge of seismogenic potential of existing active
faults. In this work the first 7 months (from 27 May to 31 December
2009) of recorded data have been analysed over a total period of
acquisition of about 30 months. Using a semi-automatic procedure, more than
800 local earthquakes have been detected, which highlights the previously unknown background
seismicity. About 70% of these events have been
relocated using a 1-D velocity model estimated specifically for the Sulmona
area. The integration of temporary network data with all the other data
available in the region enables us to obtain a statistically more robust
data set of earthquake locations. Both the final hypocentral solutions and
phase pickings are released as a supplement; an appendix also
describes phase readings' quality with respect to weighting schemes used by
location algorithms. Local magnitude values of the newly detected
events range between −1.5 and 3.7 and the completeness magnitude for the
Sulmona area during the study period is about 1.1. Duration magnitude
coefficients have been estimated as well for comparison/integration
purposes. The local Gutenberg–Richter relationship, estimated from the
microseismic data, features a low b value, tentatively suggesting that the
Sulmona area may be currently undergoing high-stress conditions, in
agreement with other recent studies. The time–space distribution of the
seismic activity with respect to the known active faults as well the
seismogenic layer thickness are preliminarily investigated. |
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