Potency Magnitude Catalog for Western US Earthquakes: 1950-2024

Earthquake catalog for the western US, derived from the US Geological Survey's Comprehensive Catalog (https://earthquake.usgs.gov/earthquakes/search/) and supplemented with estimates of seismic potency and potency magnitude. The dataset is space-delimited with the following columns, listed on the header line:

evid: ComCat event id

time: ComCat preferred origin time (UTC)

lat: ComCat preferred latitude

lon: ComCat preferred longitude

dep: ComCat preferred event depth

mag: ComCat preferred magnitude

mag_typ: ComCat preferred magnitude type

logP0: Estimate of seismic potency in units of cm*km^2 (log10)

Mp: Potency magnitude, equivalent to moment magnitude (Mw) assuming a shear modulus of 36 GPa in calculated moment

main: Clustering designation (1 or 0) indicating whether or not the event is the mainshock within a cluster of events. Clustering is defined via the nearest-neighbor diagram method of Zaliapin and Ben-Zion (2013).

If you use this dataset in your research, please cite: 

Trugman, D. T., & Ben‐Zion, Y. (2024). Potency–Magnitude Scaling Relations and a Unified Earthquake Catalog for the Western United States. The Seismic Record, 4(3), 223–230. https://doi.org/10.1785/0320240022