3D treatment of MASW data for monitoring ground improvement at an uncontrolled fill site
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(Published version)
Date
2009
Authors
Suto, K.
Scott, B.T.
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Conference paper
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Proceedings of the 20th International Geophysical Conference and Exhibition (ASEG, 2009) as published in ASGE Extended Abstracts, 2009, vol.2009, iss.1, pp.1-6
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Koya Suto and Brendan Scott
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International Geophysical Conference and Exhibition (22 Feb 2009 - 25 Feb 2009 : Adelaide, South Australia)
Abstract
The Multichannel Analysis of Surface Waves, or MASW in short (Park, et al, 1999; Suto, 2007) analyses seismic data in the frequency-velocity domain and estimates the S-wave velocity structure under the seismic receiver array. Its application range varies, commonly from only a few metres to tens of metres, depending on the wavelengths of the surface waves used for analysis. The output from an MASW survey and analysis is essentially a series of 1-dimensional S-wave velocity profiles, generating spatially discrete data points similar to borehole data. As the data are collected along a line and sampled at closely spaced intervals, it is common to present the data in the form of a 2-dimensional section of S-wave velocities along the survey line, rather than a 1-dimensional profile with depth. If an MASW survey consists of closely spaced survey lines, it is possible to present the output of the surveyed area as a 3- dimensional data set. This paper presents an example of an application of the MASW survey method at a landfill site, with data presented in plan view with a number of depth slices.
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