The first month of the 2016 central Italy seismic sequence: Fast determination of time domain moment tensors and finite fault model analysis of the ML 5.4 aftershock

Abstract

We present the revised Time Domain Moment Tensor (TDMT) catalogue for earthquakes with ML larger than 3.6 of the first month of the ongoing Amatrice seismic sequence (August 24th-September 25th). Most of the retrieved focal mechanisms show NNW-SSE striking normal faults in agreement with the main NE-SW extensional deformation of Central Apennines. We also report a preliminary finite fault model analysis performed on the larger aftershock of this period of the sequence (Mw 5.4) and discuss the obtained results in the framework of aftershocks distribution.