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Multichannel analysis of surface waves (MASW)—active and passive methods
The Leading Edge, 2007The conventional seismic approaches for near-surface investigation have usually been either high-resolution reflection or refraction surveys that deal with a depth range of a few tens to hundreds meters. Seismic signals from these surveys consist of wavelets with frequencies higher than 50 Hz.
Choon B. Park +3 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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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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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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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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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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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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Multichannel analysis of surface waves method for shallow soil profile exploration.
The Journal of the Acoustical Society of America, 2009In order to explore shallow soil properties in a noninvasive manner, a multichannel analysis of surface waves method was employed to obtain soil shear wave velocity profile up to a couple of meters. In the study, an electromechanical shaker operating in a frequency-sweeping mode was placed on the ground to excite Rayleigh waves propagating along the ...
Zhiqu Lu, James Sabatier
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Analysis of Conducting Waves Using Multichannel Surface EMG Based on Arc-Shaped Electrode
2021Surface electromyogram (EMG) is recorded as the interference of action potentials, which are produced by some motor units of a muscle. If the composition of the interference wave can be analyzed, the detailed mechanism of muscle contraction may be elucidated.
Kohei Okura +4 more
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13th EEGS Symposium on the Application of Geophysics to Engineering and Environmental Problems, 2000
We present a method that utilizes the Multichannel Analysis of Surface Waves (MASW) technique and a standard common depth point (CDP) roll-along acquisition format similar to conventional petroleum exploration seismic data acquisition to construct a vertical section of the near-surface shear (S)-wave velocity field.
Jianghai Xia +3 more
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We present a method that utilizes the Multichannel Analysis of Surface Waves (MASW) technique and a standard common depth point (CDP) roll-along acquisition format similar to conventional petroleum exploration seismic data acquisition to construct a vertical section of the near-surface shear (S)-wave velocity field.
Jianghai Xia +3 more
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