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.

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Details

Title
Simplifying complex fault data for systems-level analysis: Earthquake geology inputs for U.S. NSHM 2023
Author
Hatem, Alexandra E. 1 ; Collett, Camille M. 1 ; Briggs, Richard W. 1   VIAFID ORCID Logo  ; Gold, Ryan D. 1   VIAFID ORCID Logo  ; Angster, Stephen J. 2 ; Field, Edward H. 1 ; Powers, Peter M. 1 ; Anderson, Megan 3 ; Ben-Horin, Jeri Young 4 ; Dawson, Timothy 5 ; DeLong, Stephen 6 ; DuRoss, Christopher 1 ; Jobe, Jessica Thompson 1 ; Kleber, Emily 7 ; Knudsen, Keith L. 6 ; Koehler, Richard 8 ; Koning, Daniel 9 ; Lifton, Zachery 10 ; Madin, Ian 11 ; Mauch, James 12 ; Pearthree, Phil 4 ; Pollitz, Fred 6 ; Scharer, Katherine 13 ; Sherrod, Brian 2 ; Stickney, Michael 14 ; Wittke, Seth 12 ; Zachariasen, Judith 5 

1  Geologic Hazards Science Center, U.S. Geological Survey, Golden, USA (GRID:grid.2865.9) (ISNI:0000000121546924) 
2  Earthquake Science Center, U.S. Geological Survey, Seattle, USA (GRID:grid.2865.9) (ISNI:0000000121546924) 
3  Washington Geological Survey, Olympia, USA (GRID:grid.2865.9) 
4  Arizona Geological Survey, Tucson, USA (GRID:grid.422865.f) (ISNI:0000 0001 0680 6716) 
5  California Geological Survey, San Mateo, USA (GRID:grid.426875.a) (ISNI:0000 0004 0627 6462) 
6  Earthquake Science Center, U.S. Geological Survey, Moffett Field, USA (GRID:grid.2865.9) (ISNI:0000000121546924) 
7  Utah Geological Survey, Salt Lake City, USA (GRID:grid.460251.4) (ISNI:0000 0001 1018 8375) 
8  Nevada Bureau of Mines and Geology, Reno, USA (GRID:grid.2865.9) 
9  New Mexico Bureau of Mines and Geology, Socorro, USA (GRID:grid.2865.9) 
10  Idaho Geological Survey, Boise, USA (GRID:grid.2865.9) 
11  Oregon Department of Geology and Mining Industries, Portland, USA (GRID:grid.2865.9) 
12  Wyoming State Geological Survey, Laramie, USA (GRID:grid.2865.9) 
13  Earthquake Science Center, U.S. Geological Survey, Pasadena, USA (GRID:grid.2865.9) (ISNI:0000000121546924) 
14  Montana Bureau of Mines and Geology, Butte, USA (GRID:grid.2865.9) 
Publication year
2022
Publication date
2022
Publisher
Nature Publishing Group
e-ISSN
20524463
Source type
Scholarly Journal
Language of publication
English
DOI
https://doi.org/10.1038/s41597-022-01609-7
ProQuest document ID
2703694603
Copyright
© This is a U.S. Government work and not under copyright protection in the US; foreign copyright protection may apply 2022. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.