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Site response in the Eastern United States; a comparison of Vs30 measurements with estimates from horizontal:vertical spectral ratios

Daniel E. McNamara, William J. Stephenson, Jack K. Odum, Robert A. Williams and Lind Gee
Site response in the Eastern United States; a comparison of Vs30 measurements with estimates from horizontal:vertical spectral ratios (in The 2011 Mineral, Virginia, earthquake, and its significance for seismic hazards in eastern North America, J. Wright Horton (editor), Martin C. Chapman (editor) and Russell A. Green (editor))
Special Paper - Geological Society of America (2015) 509: 67-79

Abstract

Earthquake damage is often increased due to local ground-motion amplification caused by soft soils, thick basin sediments, topographic effects, and liquefaction. A critical factor contributing to the assessment of seismic hazard is detailed information on local site response. In order to address and quantify the site response at seismograph stations in the eastern United States, we investigate the regional spatial variation of horizontal:vertical spectral ratios (HVSR) using ambient noise recorded at permanent regional and national network stations as well as temporary seismic stations deployed in order to record aftershocks of the 2011 Mineral, Virginia, earthquake. We compare the HVSR peak frequency to surface measurements of the shear-wave seismic velocity to 30 m depth (Vs30) at 21 seismograph stations in the eastern United States and find that HVSR peak frequency increases with increasing Vs30. We use this relationship to estimate the National Earthquake Hazards Reduction Program soil class at 218 ANSS (Advanced National Seismic System), GSN (Global Seismographic Network), and RSN (Regional Seismograph Networks) locations in the eastern United States, and suggest that this seismic station-based HVSR proxy could potentially be used to calibrate other site response characterization methods commonly used to estimate shaking hazard.


ISSN: 0072-1077
EISSN: 2331-219X
Coden: GSAPAZ
Serial Title: Special Paper - Geological Society of America
Serial Volume: 509
Title: Site response in the Eastern United States; a comparison of Vs30 measurements with estimates from horizontal:vertical spectral ratios
Title: The 2011 Mineral, Virginia, earthquake, and its significance for seismic hazards in eastern North America
Author(s): McNamara, Daniel E.Stephenson, William J.Odum, Jack K.Williams, Robert A.Gee, Lind
Author(s): Horton, J. Wright, Jr.editor
Author(s): Chapman, Martin C.editor
Author(s): Green, Russell A.editor
Affiliation: U. S. Geological Survey, Golden, CO, United States
Affiliation: U. S. Geological Survey, Reston, VA, United States
Pages: 67-79
Published: 2015
Text Language: English
Publisher: Geological Society of America (GSA), Boulder, CO, United States
References: 49
Accession Number: 2015-036160
Categories: Seismology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 2 tables, geol. sketch maps
N37°53'60" - N37°53'60", W77°54'00" - W77°54'00"
Secondary Affiliation: Virginia Polytechnic Institute and State University, Department of Geosciences, USA, United States
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States
Update Code: 201517
Program Name: USGSOPNon-USGS publications with USGS authors
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