High-precision Aftershock Locations and Fault Planes of the 2016-2017 Central Italy Sequence

The earthquake catalog includes high-precision hypocenter relocations for 390,334
earthquakes recorded during the 2016-2017 Amatrice (Central Italy) 
earthquake sequence. The relative locations were computed by double-difference inversion of a 
combination of INGV phase picks and cross-correlation differential 
times measured from correlated seismograms with correlation coefficients > 0.7.

Planes of normal faults (idx=1-5) are derived from PCA analysis of 2 months of aftershock 
locations in the CAT4 catalog following large events. Surfaces of detachment faults (idx=7-10) are derived from mapping out the location of correlated earthquakes. 

Citation: Waldhauser, F., Michele, M., Chiaraluce, L., Di Stefano, R., & Schaff, D. P. (2021). Fault planes, fault zone structure and detachment fragmentation resolved with highprecision aftershock locations of the 2016-2017 central Italy sequence. Geophysical Research Letters, 48, e2021GL092918. https://doi.org/10.1029/2021GL092918