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Study of the seismicity temporal variation for the current seismic hazard evaluation in Val d’Agri, Italyстатья
Дата последнего поиска статьи во внешних источниках: 8 апреля 2022 г.
- Авторы: Basoutas I., Popandopouls G., A, D'Aessandro
- Журнал: Natural Hazards and Earth System Science
- Номер: 2
- Год издания: 2014
- Издательство: Copemicus Gesellschaften
- Местоположение издательства: Germany
- Первая страница: 4421
- Последняя страница: 4438
- DOI: 10.5194/nhessd-2-4421-2014
- Аннотация: This study examines the temporal variation of the seismicity in the Val d’Agri (SouthernItaly) and adjacent areas, for the current seismic hazard evaluation. The temporalvariation of the seismicity is expressed as time series of the number of earthquakes, the b value of the frequency magnitude distribution of Gutenberg-Richter relationshipand the seismic energy released in the form of log E2/3. The analysis was performed by the 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. 75% ofthe examined cases were successfully correlated and 25 of them resulted in false. The average duration of the low and the high probability periods is 10.6 and 13.8 monthslong respectively. These results indicate that the seismicity temporal variation monitoringin a given area and the recognition of the low and high probability periods can contribute to the evaluation, in regular monthly intervals, of the current status seismic hazard.
- Добавил в систему: Попандопуло Георгий Анатольевич