Seismic Hazard in the Nation's Breadbasket-Reference-Cited by-同舟云学术

Seismic Hazard in the Nation's Breadbasket

Published:2015-12 Issue:1_suppl Volume:31 Page:S109-S130
ISSN:8755-2930
Container-title:Earthquake Spectra
language:en
Short-container-title:Earthquake Spectra

Author:

Boyd Oliver¹,Haller Kathleen¹,Luco Nico¹,Moschetti Morgan¹,Mueller Charles¹,Petersen Mark¹,Rezaeian Sanaz¹,Rubinstein Justin²

Affiliation:

1. U.S. Geological Survey, 1711 Illinois St, Golden, CO 80401

2. U.S. Geological Survey, 345 Middlefield Rd, Menlo Park, CA 94025

Abstract

The USGS National Seismic Hazard Maps were updated in 2014 and included several important changes for the central United States (CUS). Background seismicity sources were improved using a new moment-magnitude-based catalog; a new adaptive, nearest-neighbor smoothing kernel was implemented; and maximum magnitudes for background sources were updated. Areal source zones developed by the Central and Eastern United States Seismic Source Characterization for Nuclear Facilities project were simplified and adopted. The weighting scheme for ground motion models was updated, giving more weight to models with a faster attenuation with distance compared to the previous maps. Overall, hazard changes (2% probability of exceedance in 50 years, across a range of ground-motion frequencies) were smaller than 10% in most of the CUS relative to the 2008 USGS maps despite new ground motion models and their assigned logic tree weights that reduced the probabilistic ground motions by 5–20%.

Publisher

SAGE Publications

Subject

Geophysics,Geotechnical Engineering and Engineering Geology

Link

http://journals.sagepub.com/doi/pdf/10.1193/103114EQS174M

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4. Time-Variable Deformation in the New Madrid Seismic Zone

5. Style and timing of Holocene surface faulting on the Meers fault, southwestern Oklahoma

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