A Comprehensive Moment Magnitude Catalog for the Northeastern Italy Region

Abstract We present a comprehensive catalog of independent moment magnitude (Mw) estimates for northeastern Italy and its neighboring regions using data from the Istituto Nazionale di Oceanografia e di Geofisica Sperimentale (OX) network. The catalog, spanning from 2016 to 2023, covers the geographical area between 10.0°–14.5° north latitude and 44.5°–47.0° east longitude. In this region, we identified 11,685 low-to-moderate magnitude earthquakes (−0.70≤ML≤4.35) suitable for independent Mw computation. To enhance accuracy, we incorporated new homogeneous estimates of local magnitude (ML). A newly developed routine enables rapid near-real-time Mw estimation and permits regular, rolling seismic catalog updates. We also established an empirical relationship between Mw and ML specific to our study region. Our study provides a detailed and accurate Mw catalog of independent estimates that significantly improves critical applications such as seismic hazard assessment, and risk mitigation in this seismically active region. Regular updates will be made as new data become available, ensuring ongoing accuracy and relevance. The catalog is accessible online to the scientific community, fostering collaboration and further research, thereby enhancing our understanding of the geodynamics and seismic hazards in northeastern Italy and its surrounding areas.