A high-quality Data Set for seismological studies in the East Anatolian Fault Zone, Türkiye

Abstract. This work aims to develop and share a high-quality seismic dataset for the East Anatolian Fault Zone (EAFZ), which is 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 February 6, 2023 in central Türkiye and northern and western Syria.

The dataset described here (available at https://doi.org/10.5281/zenodo.13838992, Colavitti et al., 2024) encompasses seismic events from January 1, 2019, to February 29, 2024, focusing on small-to-moderate earthquakes from M_L 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 dataset consists of 9,442 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 non-parametric approach. In addition to the earthquake catalog, the dataset features strong motion parameters such as selected Peak Ground Acceleration (PGA), Peak Ground Velocity (PGV), as well as Fourier Amplitude Spectra (FAS) in the frequency range from 0.05 to 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 spatio-temporal evolution of seismicity to identify preparatory processes for significant earthquakes, integrating this data with geodetic investigations, and enhancing earthquake hazard assessments.