Slow Rupture, Long Rise Times, and Multi-fault Geometry: The 2020 M6.4 Southwestern Puerto Rico Mainshock (Supporting Information)

This data release complements the following publication: Solares-Colón, M. M., Goldberg D.E., Melgar, D., Vanacore, E.A., Sahakian, V.J., Yeck, W.L., Hernandez, F., López-Venegas, A.M (2025). Slow rupture, long rise times, and multi-fault geometry: The 2020 M6.4 southwestern Puerto Rico mainshock. Geophysical Research Letters, 52, e2024GL109740. https://doi.org/10.1029/2024GL109740

Datasets used to constrain the results presented in this publication include broadband teleseismic data, regional strong-motion accelerometer data, high-rate and static offset estimates from Global Navigation Satellite System (GNSS) observations, re-sampled Interferometric Synthetic Aperture Radar (InSAR) line-of-sight displacements, and a centroid moment tensor solution in the formats necessary for input to the Wavelet and simulated Annealing SliP (WASP) finite fault inversion code (https://code.usgs.gov/ghsc/neic/algorithms/neic-finitefault, https://doi.org/10.5066/P1EKKUNW).

Preferred finite fault models (FFMs) on either a single fault segment or two fault segments are included using the following data: (1) teleseismic broadband data, (2) teleseismic broadband and regional strong-motion accelerometer data, (3) GNSS and InSAR data, and (4) all datasets (teleseismic broadband, regional strong-motion accelerometer, GNSS, and InSAR).

The broadband seismic data in this data release are from globally distributed seismometers from networks G (https://doi.org/10.18715/GEOSCOPE.G), GE (https://doi.org/10.14470/TR560404), GR (https://doi.org/10.25928/mbx6-hr74), GS (https://doi.org/10.7914/SN/GS), GT (https://doi.org/10.7914/SN/GT), II (https://doi.org/10.7914/SN/II), IU (https://doi.org/10.7914/SN/IU), and US (https://doi.org/10.7914/SN/US). Strong-motion accelerometer data are from the Puerto Rico Seismic Network and Puerto Rico Strong Motion Program (https://doi.org/10.7914/SN/PR). GNSS data are from the Puerto Rico Seismic Network. Sentinel-1 InSAR observations are from the European Space Agency (https://sentinels.copernicus.eu/web/sentinel/missions/sentinel-1/data-p…).