1b. Master earthquake catalog for the western U.S., for use outside the UCERF3 zone (Catalog B)

In processing step 1, preexisting catalogs found online or in the literature are collected and merged. Each entry is reformatted to a standard record that lists basic earthquake information (moment magnitude, hypocenter, origin time), three parameters for modeling seismicity rates, and a comment field that lists the original catalog and size measure. Two distinct WUS catalogs are produced in step 1 to facilitate integrating California seismicity with the rest of the WUS. The Uniform California Earthquake Rupture Forecast (UCERF3) project developed a catalog for a region extending about 100km beyond the California border. Catalog B is constructed for the whole WUS with the intention of using only its part outside the UCERF3 zone in [...]