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2025 - Atterholt, J., Wilding, J.D., Ross, Z.E.: The evolution of fault orientation in the 2019 Ridgecrest earthquake sequence with a new long-term catalogue of seismicity and moment tensors.
This page includes the updated hypocenter and moment tensor catalogs for the Ridgecrest Earthquake Sequence (spanning April 2019 to May 2023) using the methods described in the paper:
Atterholt, J., Wilding, J.D., Ross, Z.E. (2025). The evolution of fault
orientation in the 2019 Ridgecrest earthquake sequence with a new long-term
catalogue of seismicity and moment tensors.
Geophysical Journal International,
doi: 10.1093/gji/ggaf001
Please consult the paper for details on the construction of this catalog.
If you use this catalog, please cite the
GJI paper.
Please also acknowledge the DOIs for SCSN and SCEDC as described in the Acknowledgements section.
Files
AWR_Hypocenter_Catalog_v2.csv contains all earthquake
hypocenters
- Columns
- evid: event id (column 1)
- time: relocated earthquake origin time (column 2)
- latitude, longitude, depth_km: relocated earthquake location (columns 3-5)
- magnitude_gamma: magnitude estimate from GaMMA (see paper for details) (column 6)
- qnpair, qndiffP, qndiffS: number of event pairs and differential P and S times used for event relocation (columns 7-9)
- rmsP, rmsS: P and S residual differential times (columns 10-11)
AWR_MomentTensor_Catalog_v2.csv contains inverted moment tensors
for select events
-
Columns
- evid: event id (column 1)
- time: relocated earthquake origin time (column 2)
- latitude, longitude, depth_km: relocated earthquake location (columns 3-5)
- magnitude: moment magnitude from moment tensor inversion (column 6)
- moment: seismic moment (column 7)
- Mnn, Mee, Mdd, Mne, Mnd, Med: moment tensor components (columns 8-13)
- iso, iso_std: isotropic percentage and corresponding standard deviation (columns 14-15)
- clvd, clvd_std: clvd percentage and corresponding standard deviation (columns 16-17)
- strike_1, strike_2, strike_std: strikes of nodal planes and corresponding standard deviation (columns 18-20)
- dip_1, dip_2, dip_std: dips of nodal planes and corresponding standard deviations (columns 21-23)
- rake_1, rake_2, rake_std: rakes of nodal planes and corresponding standard deviation (columns 24-26)
- n_picks_used: number of P-wave picks used to invert for moment tensor (column 27)
Contact information: jatterholt at usgs.gov
Acknowledgements
Data and materials availability: The catalogs from (Atterholt et al. 2025) are publicly available from the Southern California Earthquake Data Center (scedc.caltech.edu). All waveform and parametric data are available from the Caltech/USGS Southern California Seismic Network doi:10.7914/SN/CI; stored at the Southern California Earthquake Data Center, doi:10.7909/C3WD3xH1. All remaining data are available in the main text or the supplementary materials.
