study of the seismicity temporal variation for the current seismic hazard evaluation in val d'agri, italy
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ID: 248414
2014
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Abstract
This study examines the temporal variation of the seismicity in the
Val d'Agri (southern Italy) and adjacent areas, for the current seismic hazard
evaluation. The temporal variation of the seismicity is expressed as time
series of the number of earthquakes, b value of Gutenberg–Richter
relationship or b value of the frequency–magnitude distribution and the
seismic energy released in the form of logE2/3. The analysis was
performed by means of a new research tool that includes visualizing
techniques, which helps the interactive exploration and the interpretation
of temporal variation changes. The obtained time series show a precursory
seismicity pattern, characterized by low and high probability periods,
which preceded earthquakes of magnitude M ≥ 4.0. The 75% of the
examined cases were successfully correlated with a change in seismicity
pattern. The average duration of the low and the high probability periods is
10.6 and 13.8 months respectively. These results indicate that the
seismicity temporal variation monitoring in a given area and the recognition
of the low and high probability periods can contribute to the evaluation,
in regular monthly intervals, of current seismic hazard status.
| Reference Key |
baskoutas2014naturalstudy
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|---|---|
| Authors | ;I. Baskoutas;A. D'Alessandro |
| Journal | anziam journal |
| Year | 2014 |
| DOI |
10.5194/nhess-14-3169-2014
|
| URL | |
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