Print Email Facebook Twitter Advances in surface wave methods: Cascaded MASW-SASW Title Advances in surface wave methods: Cascaded MASW-SASW Author Westerhoff, R.S. Brouwer, J.H. Meekes, J.A.C. Publication year 2005 Abstract The application of the MASW method in areas that show strong lateral variations in subsurface properties is limited. Traditional SASW may yield a better lateral resolution but the dispersion curves (and thus the subsurface models) obtained with the method may be poor. The joint application of MASW and SASW is proposed to allow for a robust determination of dispersion curves and the incorporation of lateral changes in subsurface properties. The method involves the application of MASW for the initial estimation of a gross dispersion curve. From the gross dispersion curve the expected arrival-time window as a function of offset is derived for the fundamental Rayleigh mode and the SASW method is subsequently applied to this time window. Discrepancies between MASW and SASW dispersion curves are then used to quantify lateral (in-) homogeneity. Based on a synthetic data example the surplus value of this method to find lateral variations in MASW dispersion curves is explained. Subject Geological Survey NetherlandsGeosciencesEnergy / Geological Survey NetherlandsDispersion curvesInitial estimationLateral resolutionLateral variationsRayleigh modeSubsurface modelSubsurface propertiesSynthetic dataDispersion (waves) To reference this document use: http://resolver.tudelft.nl/uuid:d918496a-8c92-4ffe-a10a-afb3a3c1244d TNO identifier 500678 Publisher European Association of Geoscientists and Engineers, EAGE, Utrecht Source 11th European Meeting of Environmental and Engineering Geophysics of the Near Surface Geoscience Division of the EAGE, Near Surface 2005, 4 September 2005 through 7 September 2005, Palermo, 1-4 Bibliographical note Sponsors: Universita degli Studi di Palermo Document type conference paper Files To receive the publication files, please send an e-mail request to TNO Library.