Results 211 to 220 of about 25,540 (244)
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Multichannel analysis of surface wave method with the autojuggie
Soil Dynamics and Earthquake Engineering, 2003Abstract The shear (S)-wave velocity of near-surface materials and its effect on seismic-wave propagation are of fundamental interest in many engineering, environmental, and groundwater studies. The multichannel analysis of surface wave (MASW) method provides a robust, efficient, and accurate tool to observe near-surface S-wave velocity.
Gang Tian +5 more
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Numerical Investigation of 3D multichannel analysis of surface wave method
Journal of Applied Geophysics, 2015Abstract Multichannel analysis of surface wave (MASW) method is an efficient tool to obtain near-surface S-wave velocity, and it has gained popularity in engineering practice. Up to now, most examples of using the MASW technique are focused on 2D models or data from a 1D linear receiver spread. We propose a 3D MASW scheme.
Limin Wang, Yixian Xu, Yinhe Luo
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CMP spatial autocorrelation analysis of multichannel passive surface-wave data
SEG Technical Program Expanded Abstracts 2015, 2015In this paper, we demonstrate that common midpoint spatial autocorrelation (CMP-SPAC) analysis of multichannel passive surface waves gives accurate phasevelocity curves, and enable us to reconstruct twodimensional (2D) S-wave velocity (VS) structures with in laterally heterogeneous environment.
Koichi Hayashi* +3 more
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Multichannel Analysis of Passive Surface Waves – Modeling and Processing Schemes
Site Characterization and Modeling, 2005Characteristics of phase velocity and incoming angle (azimuth) of passive surface waves as they are observed with a multichannel processing scheme are studied through both synthetic modeling and field experiments. They are analyzed specifically in association with the case of multiple sources and multiple modes of dispersion.
Choon B. Park, Richard D. Miller
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Multichannel analysis of underwater surface waves near Vancouver, B.C., Canada
SEG Technical Program Expanded Abstracts 2000, 2000Surface (Scholte) waves acquired during underwater seismic surveys with hydrophone arrays are analyzed using the multichannel analysis of surface waves (MASW) method to construct shear-wave velocity (Vs) profiles for the upper 40-m of water-bottom sediments in the Fraser River delta area, near Vancouver, British Columbia, Canada.
Choon B. Park +6 more
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Offset And Resolution Of Dispersion Curve In Multichannel Analysis Of Surface Waves (Masw)
14th EEGS Symposium on the Application of Geophysics to Engineering and Environmental Problems, 2001Influence of offset-related parameters on the resolution of dispersion curve in multichannel analysis of surface waves (MASW) surveys is described from the theoretical perspective of the dispersion curve imaging method used during a normal implementation of MASW.
Choon Byong Park +2 more
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Multichannel Analysis of Surface Wave (MASW) Method for Geotechnical Site Characterization
Earthquake Engineering and Soil Dynamics, 2005A surface wave method is often used to map shear wave velocity variation of soil with depth. However, measured seismic wave field usually contains such unfavorable waves as higher modes of surface waves, body waves, and ambient noise. These waves can significantly influence results of the analysis if not properly handled. Since the conventional surface
Dayakar Penumadu, Choon B. Park
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Detection of subterranean cavities and anomalies using multichannel analysis of surface wave
Geomechanics and Geoengineering, 2020Both underground cavities and anomalies are important issues which may cause damage to ground strata and subsequently to their overlaying structures due to subsidence and excessive settlement.
Hossein Rahnema +3 more
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Noise Reduction Technique Applied to the Multichannel Analysis of Surface Waves
Acta Geologica Sinica - English Edition, 2012AbstractThis paper shows the presence of noises and technique to reduce these noises during the surface wave analysis. The frequency‐dependent properties of Rayleigh‐type surface waves can be used for imaging and characterizing the shallow subsurface.
Taohidul ISLAM +2 more
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APPLICATION OF MULTICHANNEL ANALYSIS OF SURFACE WAVE (MASW) IN GEOTECHNICS
Zbornik radovaMASW (Multichannel Analysis of Surface Waves) is a non-invasive seismic method used for geotechnical site investigations, developed in 1999 in the USA. Its primary purpose is to assess soil stiffness by measuring the shear wave velocity (Vs) beneath the surface, which is crucial for geotechnical analysis.
Dušan Brstina +2 more
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