Simplifying complex fault data for systems-level analysis: Earthquake geology inputs for U.S. NSHM 2023
Year: 2022
Type: data-paper
Abstract: As part of the U.S. National Seismic Hazard Model (NSHM) update planned for 2023, two databases were prepared to more completely represent Quaternary-active faulting across the western United States: the NSHM23 fault sections database (FSD) and earthquake geology database (EQGeoDB). In prior iterations of NSHM, fault sections were included only if a field-measurement-derived slip rate was estimated along a given fault. By expanding this inclusion criteria, we were able to assess a larger set of faults for use in NSHM23. The USGS Quaternary Fault and Fold Database served as a guide for assessing possible additions to the NSHM23 FSD. Reevaluating available data from published sources yielded an increase of fault sections from ~650 faults in NSHM18 to ~1,000 faults proposed for use in NSHM23. EQGeoDB, a companion dataset linked to NSHM23 FSD, contains geologic slip rate estimates for fault sections included in FSD. Together, these databases serve as common input data used in deformation modeling, earthquake rupture forecasting, and additional downstream uses in NSHM development.
Source: Scientific Data
Authors: Alexandra E. Hatem, Camille M. Collett, Richard W. Briggs, Ryan D. Gold, Stephen J. Angster, Edward H. Field, Peter M. Powers, Earthquake Geology Working Group, Megan Anderson, Jeri Young Ben-Horin, Timothy Dawson, Stephen DeLong, Christopher DuRoss, Jessica Thompson Jobe, Emily Kleber, Keith L. Knudsen, Richard Koehler, Daniel Koning, Zachery Lifton, Ian Madin, James Mauch, Phil Pearthree, Fred Pollitz, Katherine Scharer, Brian Sherrod, Michael Stickney, Seth Wittke, Judith Zachariasen
Institutions: Geologic Hazards Science Center, Earthquake Science Center, Washington Geological Survey, Arizona Geological Survey, California Geological Survey, Utah Geological Survey, Nevada Bureau of Mines and Geology, New Mexico Bureau of Geology and Mineral Resources, Idaho Geological Survey, Oregon Department of Geology and Mineral Industries, Wyoming State Geological Survey, Montana Bureau of Mines and Geology
Language: English
Subfield: Geophysics
Field: Earth and Planetary Sciences
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,090
Funder: U.S. Geological Survey
OpenAlex ID: W4292230784