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Propagation of data uncertainty in surface wave inversion

Abstract

Although in recent years surface wave methods have undergone significant development that has greatly enhanced their capabilities, little effort has been spent to determine the uncertainty associated with surface wave measurements. The objective of this study is to determine how the uncertainty of the experimental data is mapped into the uncertainty of the shear wave velocity profile via the inversion algorithm. The methodology developed in this study for estimating the uncertainty of the shear wave velocity profile from surface wave measurements is based on the assumption that the experimental data are normally distributed. The validity of this hypothesis was experimentally verified using data gathered at two sites in Italy where surface wave tests were performed using linear arrays of multiple receivers. The experimental dispersion curve measured at the site was subsequently inverted to obtain the expected shear wave velocity profile together with an estimate of the associated standard deviation. The final results show that uncorrelated noise has a very little influence on multistation surface wave tests, confirming their robustness for applications in noisy environments.


ISSN: 1083-1363
EISSN: 1943-2658
Serial Title: Journal of Environmental & Engineering Geophysics
Serial Volume: 10
Serial Issue: 2
Title: Propagation of data uncertainty in surface wave inversion
Title: Seismic surface waves
Author(s): Lai, Carlo G.Foti, SebastianoRix, Glenn J.
Author(s): O'Neill, Adameditor
Affiliation: European Center for Training and Research in Earthquake Engineering, Eucentre, Pavia, Italy
Affiliation: Kyoto University, Department of Civil and Earth Resources Engineering, Kyoto, Japan
Pages: 219-228
Published: 20050601
Text Language: English
Publisher: Environmental and Engineering Geophysical Society, Englewood, CO, United States
References: 25
Accession Number: 2006-081698
Categories: Engineering geologyApplied geophysics
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 2 tables
N39°49'60" - N40°25'00", E18°00'00" - E18°25'00"
Secondary Affiliation: Politecnico di Torino, ITA, ItalyGeorgia Institue of Technology, USA, United States
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute.
Update Code: 200646
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