Source parameters of small and moderate earthquakes in the area of the 2009 L’Aquila earthquake sequence (central Italy)

摘要: Abstract The main goal of this study is to provide moment tensor solutions for small and moderate earthquakes the 2009 L’Aquila seismic sequence (central Italy). analysis was performed by using data coming from permanent Italian network run Istituto Nazionale di Geofisica e Vulcanologia (INGV) “Cut And Paste” (CAP) method based on broadband waveform inversion. Focal mechanisms, source depths magnitudes are determined through a grid search technique. By allowing time shifts between synthetics observed CAP reduces dependence solution assumed velocity model earthquake location. We computed tensors 312 having local magnitude in range 2.7 5.9. has made possible considerably expand database focal mechanisms lowest (i.e. neighborhood 3) without overlooking reliability results. obtained generally show NW–SE striking planes agreement with mapped faults region. Comparisons already published seismological geological information available allowed us proper interpret frame evolution also furnish additional about less energetic phases. were inverted obtain seismogenic stress area. Results compatible major tectonic domain. relation suitable area range.