Results 141 to 150 of about 401 (183)
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Optimal Spread Design for Passive MASW
Proceedings, 2011The passive surface wave method has the potential to reach investigation depths significantly greater than active sources and can be effectively used in very noisy settings. In this study the optimal spread layout and orientation is investigated and determined that would allow surface wave penetration deep enough into the bedrock to permit studies of ...
B. Leitner, R.D. Miller, J. Ivanov
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MASW applications for road construction and maintenance
The Leading Edge, 2018Abstract Road construction and maintenance are major parts of geotechnical engineering that deal with the stiffness of natural or manmade ground materials. At the earliest stage of new road construction, the ground along the planned route often needs to be characterized in terms of the overall stiffness of the overburden-bedrock ...
Choon Park +3 more
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MASW for geotechnical site investigation
The Leading Edge, 2013Multichannel anaylsis of surface waves (MASW) is a seismic surface-wave technique developed specifically for near-surface applications at depths usually shallower than a few tens of meters (Park et al., 1999). Since its introduction in the late 1990s, use of the technique has rapidly increased for two reasons: (1) it provides the shear-wave velocity ...
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Linear Spread Configuration in the MASW Method
Near Surface 2010 - 16th EAGE European Meeting of Environmental and Engineering Geophysics, 2010In this paper, we evaluate the effect of geophone configuration on dispersion image for linear spreads in the MASW method. To reveal the spectral resolution of dispersion images, MASW records were collected using nine different types of linear spread configuration, then dispersion image for each record were calculated using phase velocity analysis ...
Akkaya, İsmail +2 more
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MASW surveys in landfill sites in Australia
The Leading Edge, 2013Multichannel analysis of surface waves (Park et al., 1999), commonly called MASW, is a seismic technique used to map the near-surface S-wave velocity structure. It has been applied to a range of geotechnical engineering problems, such as detection of cavities (Miller et al., 1999), the search for bedrock structure (Carnevale et al., 2005), examining ...
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Ocean waves as a passive MASW source
Journal of Applied Geophysics, 2019Abstract Ocean waves have long been considered to be a source of seismic surface-wave energy for subsurface exploration. We test the utility of ocean-source seismic recording, the sensitivity to array orientation with respect to the shoreline direction, and the equivalence of passive- and active-source data acquired in a near-shore environment.
John H. McBride +5 more
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The application of MASW in a geotechnical site investigation
9th EAGE/EEGS Meeting, 2003For engineers it is important to achieve material parameters, such as shear modulus and Young's modulus. With material parameters for soils and bedrock e.g. settlements, deformations and strength can be estimated. After often time consuming fieldwork traditional geotechnical survey methods usually provide material parameters valid only for a small ...
R. Wisén +3 more
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Evaluation of the MASW technique in unconsolidated sediments
SEG Technical Program Expanded Abstracts 1999, 1999Shear (S) wave velocities derived from the MASW (multi-channel analysis of surface wave) technique and borehole measurements at seven well locations in unconsolidated sediments of the Fraser River Delta are compared. The overall difference between these two sets of S-wave velocities is about 15%.
Jianghai Xia +4 more
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Advances in Surface Wave Methods – Cascaded MASW-SASW
Near Surface 2005 - 11th European Meeting of Environmental and Engineering Geophysics, 2005The 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.
Westerhoff, R.S. +2 more
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Seismic Investigation Of Pavements By Masw Method — Geophone Approach
14th EEGS Symposium on the Application of Geophysics to Engineering and Environmental Problems, 2001A feasibility test of the multichannel approach to seismic investigation of a pavement system is described. This test followed the procedure normally taken in the multichannel analysis of surface waves (MASW) method by using geophones and a light (8-oz) hammer source.
Choon B. Park +4 more
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