Abstract
Multichannel analysis of surface waves (MASW) is a fast, low-cost, and environmentally friendly technique to estimate shear wave velocity profiles of soil sites. This paper introduces a new open-source software, MASWaves, for processing and analysing multichannel surface wave records using the MASW method. The software consists of two main parts: a dispersion analysis tool (MASWaves Dispersion) and an inversion analysis tool (MASWaves Inversion). The performance of the dispersion analysis tool is validated by comparison with results obtained by the Geopsy software package. Verification of the inversion analysis tool is carried out by comparison with results obtained by the software WinSASW and theoretical dispersion curves presented in the literature. Results of MASW field tests conducted at three sites in south Iceland are presented to demonstrate the performance and robustness of the new software. The soils at the three test sites ranged from loose sand to cemented silty sand. In addition, at one site, the results of existing spectral analysis of surface waves (SASW) measurements were compared with the results obtained by MASWaves.
Highlights
Knowledge of the geotechnical properties of subsoil sites is essential in various civil engineering projects
This paper introduces the first version of a new open source software, MASWaves (Multichannel Analysis of Surface Waves for assessing shear wave velocity profiles of soils), for application of the MASW method, developed at the Faculty of Civil and Environmental Engineering, University of Iceland (Olafsdottir 2016)
The MASW method is divided into three main steps; field measurements, dispersion analysis and inversion analysis (Park et al 1999)
Summary
Knowledge of the geotechnical properties of subsoil sites is essential in various civil engineering projects. By inversion of the experimental dispersion curve, the shear wave velocity profile for the test site can be determined. A theoretical dispersion curve is computed based on an assumed set of model parameters, including an assumed shear wave velocity profile for the test site.
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