Insights on the Italian Seismic Network from location uncertainties

Abstract Probabilistic earthquake locations provide confidence intervals for the hypocentre solutions such as errors encountered in position, origin time, and magnitude. If relationship of parameters relative to local arrangement seismic network is considered, node distance, number stations, gap, quality phase readings), uncertainties can then insights on location capability network. In this paper, we collect data recorded from Italian Seismic Network a time span 5 years. The pertain three different catalogues according progressive refinement phases procedure: automatic location, revised published location. By means spatial analysis, assess distribution location-related network-related estimators across study area. These are subsequently combined existence correlations at scale. results indicate that generally able robust national scale smaller earthquakes, elongated shape Italy (and its network) does not cause systematic bias locations. However, highlight subregions which performance weaker. At present, unique 2D, 3-layer velocity model used procedure, could represent main limitation improvement Therefore, assessment locally optimized models priority homogenization performance.