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seismicat: an R package for Seismicity Catalog Analysis

January 23, 2026

seismicat (SEISMIcity CATalog analysis) is an R package used to analyze an earthquake catalog to determine the b-value of the Gutenberg-Richter distribution and estimate the rate of earthquakes, including a range of uncertainties. This process is used to determine the total earthquake rates for regions of the USGS National Seismic Hazard Model (NSHM).

Publication Year 2026
Title seismicat: an R package for Seismicity Catalog Analysis
DOI 10.5066/P1QEDBMX
Authors Andrew J Michael
Product Type Software Release
Record Source USGS Asset Identifier Service (AIS)
USGS Organization Earthquake Science Center
Rights This work is marked with CC0 1.0 Universal
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