Focal mechanism solutions of 122 earthquakes occurred between 2024 and 2025 in the Southeastern Alps

This dataset contains quality-controlled focal mechanism solutions for 122 earthquakes that occurred in the Southeastern Alps between January 2024 and October 2025, with local magnitudes Md 1.0–4.6.First-motion polarities were automatically classified using the Convolutional First Motion (CFM) deep-learning model (Messuti et al., 2023). Focal mechanisms were then computed using SKHASH, a Python implementation of the HASH algorithm for focal-mechanism inversion based on first-motion polarities (Skoumal et al., 2024).The dataset includes hypocentral parameters (origin time, latitude, longitude, depth), local magnitude (Md), nodal-plane orientations (strike, dip, rake), and solution-quality metrics derived from the SKHASH inversion, including polarity misfit, nodal-plane uncertainty, number of polarities, and station distribution ratio (STDR). ReferencesMessuti, G., S. Scarpetta, O. Amoroso, F. Napolitano, M. Falanga, and P. Capuano (2023). CFM: A convolutional neural network for first-motion polarity classification of seismic records in volcanic and tectonic areas, Front. Earth Sci. 11, https://doi.org/10.3389/feart.2023.1223686.Skoumal, R. J., J. L. Hardebeck, and P. M. Shearer (2024). SKHASH: A Python package for computing earthquake focal mechanisms, Seismol. Res. Lett. 95(4), 2519–2526, https://doi.org/10.1785/0220230329