Enhanced seismicity catalog (2017–February 5, 2023) for the epicentral region of the 2023 Mw 7.8 Kahramanmaraş earthquake, Türkiye

This catalog was constructed using a combination of artificial intelligence and traditional methods for phase picking, phase association, and earthquake relocation. It covers the period from January 1, 2017, to February 5, 2023—one day prior to the Mw 7.8 earthquake that struck Türkiye. The dataset includes three subsets: 1) Raw Catalog (raw_catalog.csv): Comprises 14,128 events obtained from the full association and relocation process, without filtering based on event type or location quality. 2) Earthquake Catalog (earthquake_catalog_curated.csv): Comprises 5,721 tectonic events with well-constrained hypocenters (68% confidence ellipsoid semi-major axis < 8 km and depth < 15 km). 3) Anthropogenic Catalog (anthropogenic_catalog_curated.csv): Comprises 1,695 human-induced events, primarily quarry blasts, also with well-constrained hypocenters (68% confidence ellipsoid semi-major axis < 8 km and depth < 15 km). Description of the file columns (same for all the subsets): Column Description eventid Unique identifier for each event. time UTC timestamp of the event. longitude Longitude of the event in decimal degrees (WGS84). Expected value. latitude Latitude of the event in decimal degrees (WGS84). Expected value. depth Depth of the event in kilometers. Expected value. magnitude Local magnitude (ML) of the event. covxx Variance in x of the hypocenter estimation. covyy Variance in y of the hypocenter estimation. covzz Variance in z of the hypocenter estimation. covxy Covariance xy of the hypocenter estimation. covxz Covariance xz of the hypocenter estimation. covyz Covariance yz of the hypocenter estimation. gap Maximum azimuth gap in degrees between stations used for location len3 Length of the semi-major-axis of 68% confidence ellipsoid uncertainties rms Root-mean-square of residuals at the expectation hypocenter nphs Number of phases used for hypocenter location The manuscript from which this dataset stems is currently under review. In the meantime, please cite the preprint as follows:S. Núñez-Jara, P. Martínez-Garzón, G. Kwiatek, Y. Ben-Zion, G. Dresen, D. Becker, F. Cotton, and M. Bohnhoff. Unraveling the spatiotemporal fault activation in a complex fault system: the run-up to the 2023 MW 7.8 Kahramanmaraş earthquake, Türkiye. http://dx.doi.org/10.13140/RG.2.2.22774.10562