Valoroso, Luisa and Improta, Luigi and Chiaraluce, L. and Di Stefano, R. and Ferranti, L. and Govoni, A. and Chiarabba, Claudio (2009) Active faults and induced seismicity in the Val d’Agri area (Southern Apennines, Italy). Geophysical Journal International, 178 (1). pp. 488-502. DOI: https://doi.org/10.1111/j.1365-246X.2009.04166.x
Full text not available from this repository.Abstract
The NW-SE trending Val d’Agri extensional basin is one of the regions in Italy with the highest seismogenic potential. Field data do not univocally define which of the fault systems bordering the basin on the two opposite sides is accommodating the active deformation. In this study, we detect and locate, by using an automatic picking procedure, almost 2000 low-magnitude earthquakes (−0.2 < ML < 2.7) recorded by a dense network during a 13-months-long seismic experiment. Events are mostly located along the southwestern flank of the basin. To the south, intense swarm-type microseismicity defines a major cluster ∼5 km wide from 1 to 5 km depth. To the west, a clear alignment of events, characterized by normal faulting kinematics, defines a NE-dipping normal fault between 1 and 6 km depth. The upward continuation of this structure, ∼5 km long, matches a mapped active normal fault recognized by field and palaeoseismological surveys. A temporal correlation found between the intense swarm-type microseismicity and the water level changes in the nearby artificial Pertusillo lake suggests that this seismicity is reservoir-induced.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Earthquake interaction, forecasting, and prediction Seismicity and tectonics Fractures and faults |
| Subjects: | Methodology > Method and procesing > Collective properties of seismicity Region > Italy > southern Apennines Inducing technology > Reservoir impoundment |
| Project: | EPOS-IP > VAL D'AGRI: water reservoir EPOS-IP > VAL D'AGRI FIELD: conventional hydrocarbon extraction |