A high-quality data set for seismological studies in the East Anatolian Fault Zone, Türkiye

This work aims to develop and share a high-quality seismic data set for the East Anatolian Fault Zone (EAFZ), a highly active seismic area that is prone to earthquakes, as evidenced by the two major earthquakes of magnitude 7.8 and 7.6 that occurred on 6 February 2023 in central Türkiye and northern and western Syria. The data set described here (available at 10.5281/zenodo.13838992, Colavitti et al., 2024) encompasses seismic events from 1 January 2019-29 February 2024, focusing on small to moderate earthquakes with an ML between 2.0 and 5.5 and is intended as a useful tool for researchers working on seismic source characterization and strong motion parameters. The data set consists of 9442 events recorded by 271 stations and includes a total of 270 704 seismic phases (148 223 P and 122 481 S). The complete automatic seismic processor (CASP) software package ensures accurate arrival times and refined earthquake locations, while the local magnitude is calibrated using a nonparametric approach. In addition to the earthquake catalog, the data set features strong motion parameters such as peak ground acceleration (PGA), peak ground velocity (PGV), and Fourier amplitude spectra (FAS) in the frequency range from 0.05-47.2 Hz. The disseminated product aims to support applications in spectral decomposition using the generalized inversion technique (GIT), promote investigations in local earthquake tomography (LET), and contribute to the development of ground-motion prediction equations (GMPEs). Long-term objectives include studying the spatiotemporal evolution of seismicity to identify preparatory processes for significant earthquakes, integrating these data with geodetic investigations, and enhancing earthquake hazard assessments.