Title

Combining Active- and Passive-Source Measurements to Profile Shear Wave Velocities for Seismic Microzonation

Document Type

Conference Proceeding

Publication Date

1-24-2005

Publication Title

Geo-Frontiers 2005

Publisher

American Society of Civil Engineers

First page number:

977

Last page number:

990

Abstract

A surface wave measurement made by combining active- and passive- source methods was adopted to characterize shear wave velocity (VS) profiles at a dozen sites around the Las Vegas basin for the purpose of seismic microzonation. The active- and passive-source methods used were the SASW and ReMi methods, respectively. The dispersion datasets developed by both methods for the same location generally exhibited excellent agreement. They are supplementary to one another in that the active-source measurement provides detailed information at shallower depths but depth of resolution is constrained by the capability of the seismic source, while the passive-source measurement yields a greater depth of resolution but provides less detail at shallower depths. The VS profiles were developed by inverting the combined dispersion dataset using simulated annealing followed by linearized inversion. Trends in overall VS for each site tend to be inversely related to basin depth, which is appropriate based on lithologic cues.

Keywords

Nevada; Seismic waves; Seismic waves—Measurement; Shear waves; Shear waves—Measurement; Surface waves; Wave measurement; Wave velocity

Disciplines

Civil and Environmental Engineering | Engineering | Environmental Engineering

Language

English

Permissions

Use Find in Your Library, contact the author, or interlibrary loan to garner a copy of the item. Publisher policy does not allow archiving the final published version. If a post-print (author's peer-reviewed manuscript) is allowed and available, or publisher policy changes, the item will be deposited.

Identifier

DOI: http://dx.doi.org/10.1061/40779(158)5

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