Multichannel Analysis of Surface Waves (MASW) at the National Geotechnical Engineering Site at Texas A&M University (NGES/TAMU): Fid-Bau Portal

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Multichannel Analysis of Surface Waves (MASW) at the National Geotechnical Engineering Site at Texas A&M University (NGES/TAMU)

Williams, R. T. / Penumadu, D.

We analyzed only the portion of the NGES/TAMU data set suitable for MASW, with a sledge hammer as the source. Lateral variations in Vs are obvious from inspection of the raw data. We selected 4 non-overlapping intervals for analysis, chosen for maximum lateral uniformity within an interval. Analysis of the data led to four dispersion curves, which were inverted to yield 1-D Vs profiles. We present alternative profiles based on different starting models for the inversion, to illustrate the degree on non-uniqueness in the results. The new contributions include the analysis of the MASW data using SurfSeis©, a program that is commercially available from the Kansas Geological Survey, and in parallel using shareware programs from the Seismic Un*x and CPS software packages. This software is freely distributed to the scientific community by the Colorado School of Mines, and St. Louis University, respectively. Here they were combined and adapted for MASW

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Multichannel Analysis of Surface Waves (MASW) at the National Geotechnical Engineering Site at Texas A&M University (NGES/TAMU)

Williams, R. T. / Penumadu, D.

We analyzed only the portion of the NGES/TAMU data set suitable for MASW, with a sledge hammer as the source. Lateral variations in Vs are obvious from inspection of the raw data. We selected 4 non-overlapping intervals for analysis, chosen for maximum lateral uniformity within an interval. Analysis of the data led to four dispersion curves, which were inverted to yield 1-D Vs profiles. We present alternative profiles based on different starting models for the inversion, to illustrate the degree on non-uniqueness in the results. The new contributions include the analysis of the MASW data using SurfSeis©, a program that is commercially available from the Kansas Geological Survey, and in parallel using shareware programs from the Seismic Un*x and CPS software packages. This software is freely distributed to the scientific community by the Colorado School of Mines, and St. Louis University, respectively. Here they were combined and adapted for MASW

Multichannel Analysis of Surface Waves (MASW) at the National Geotechnical Engineering Site at Texas A&M University (NGES/TAMU)

Williams, R. T. / Penumadu, D.

We analyzed only the portion of the NGES/TAMU data set suitable for MASW, with a sledge hammer as the source. Lateral variations in Vs are obvious from inspection of the raw data. We selected 4 non-overlapping intervals for analysis, chosen for maximum lateral uniformity within an interval. Analysis of the data led to four dispersion curves, which were inverted to yield 1-D Vs profiles. We present alternative profiles based on different starting models for the inversion, to illustrate the degree on non-uniqueness in the results. The new contributions include the analysis of the MASW data using SurfSeis©, a program that is commercially available from the Kansas Geological Survey, and in parallel using shareware programs from the Seismic Un*x and CPS software packages. This software is freely distributed to the scientific community by the Colorado School of Mines, and St. Louis University, respectively. Here they were combined and adapted for MASW

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Title:

Multichannel Analysis of Surface Waves (MASW) at the National Geotechnical Engineering Site at Texas A&M University (NGES/TAMU)

Contributors:

Williams, R. T. (author) / Penumadu, D. (author)

Conference:

Georisk 2011 ; 2011 ; Atlanta, Georgia, United States

Published in:

GeoRisk 2011 ; 361-370

Publication date:

2011-06-21

ISBN:

DOI:

https://doi.org/10.1061/41183(418)31

Type of media:

Conference paper

Type of material:

Electronic Resource

Language:

English

Keywords:

Retaining structures , Load and resistance factor design , Geotechnical engineering , Seismic effects , Soil dynamics , Texas , Earthquake engineering , Geohazards , Surface waves , Uncertainty principles

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