Earthquake catalogs, velocity models, and slab geometry for the Atacama segement, Chile

This dataset contains the earthquake catalogs, velocity models, and slab geometry for the Atacama segment of the Chile subduction zone described in Münchmeyer at al. (2025). Two catalogs are includes. The primary catalog (files called "_temp") covers the time from November 2020 to Februrary 2024 and was derived from a dense network of temporary stations. It contains approximately 165,000 events. The secondary catalog (files called "_perm") covers the time from 2014 to Februrary 2024 and uses only data from permanent seismic stations. The methods for generating the catalog are outlined in Münchmeyer at al. (2025).

Each catalog is provided in tabular format using two files. The "catalog" file contains one earthquake per line. The "assignments" file describes the associated picks with one pick per line. To match the events and assignments, the columns "idx" in the events file and "event_idx" in the assignments file should be used. Column names for the events and picks use descriptive names. All times are provided in UTC. All coordinates use WGS84 as references.

The file "chile_temp_velest.csv" contains a 1D velocity model derived with VELEST in tabular format. The files "chile_temp_P.mod" and "chile_temp_S.mod" contain the 3D velocity models inverted with SIMUL2017. They use the SIMUL format. The file "slab_fine.xyz" contains the slab geometry inferred manually from the seismicity distribution in temporary catalog. No velocity models or slab geometry have been inferred from the permanent records.