NLL-SSST-coherence high-precision earthquake location catalog for the 2023 Ojai, California earthquake sequence

Hypocenter catalog files and visualizations of high-precision, NLL-SSST-coherence earthquake locations for the 2023 M5.1 Ojai, California earthquake sequence and background seismicity (2128 events, 1980-01-01 to 2023-08-25).

NLL-SSST-coherence (Lomax and Savvaidis, 2022; Lomax and Henry, 2023) is an enhanced, absolute-timing earthquake location procedure which 1) iteratively generates spatially varying travel-time corrections to improve multi-scale location precision and 2) uses waveform similarity to improve fine-scale location precision.

Relocations performed with phase arrival data available from http://service.scedc.caltech.edu

Visualizations include topography from https://opentopography.org and surface fault traces from https://usgs.maps.arcgis.com

This repository contains:

Full catalog in CSV format:
CSV file data columns correspond to selected fields of the of NonLinLoc Hypocenter format output http://alomax.free.fr/nlloc/soft7.00/formats.html#_location_hypphs_

Full catalog in NonLinLoc hyp format:
NonLinLoc Hypocenter format output http://alomax.free.fr/nlloc/soft7.00/formats.html#_location_hypphs_

Key NLL-SSST-coherence configuration files: NLL-SSST-coherence_config/*

Selected Visualization images