Results 221 to 230 of about 25,810 (252)
Some of the next articles are maybe not open access.
Multichannel analysis of passive surface waves based on crosscorrelations
GEOPHYSICS, 2016Passive seismic methods in highly populated urban areas have gained much attention from geophysics and civil engineering communities because traditional seismic surveys, especially in complex urbanized environments, might be improperly applied. In passive seismic methods, directional noise sources will inevitably bring azimuthal effects and spatial ...
Cheng, F. +9 more
openaire +2 more sources
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
openaire +1 more source
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
openaire +1 more source
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
openaire +1 more source
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
openaire +1 more source
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
openaire +1 more source
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
openaire +1 more source
Application of multichannel analysis of passive surface waves method for fault investigation
Journal of Applied Geophysics, 2021Abstract Research on faulting is of fundamental significance to the exploration of geothermal resources since faulting is an important factor in the formation of traps for water accumulation. The high-frequency passive surface waves methods using ambient noise data become more popular because of its low-cost, environment-friendly, non ...
Ling Ning +5 more
openaire +1 more source
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
openaire +1 more source
Passive multichannel analysis of surface waves using 1D and 2D receiver arrays
GEOPHYSICS, 2021We use the seismic multichannel analysis of surface waves (MASW) method, which originally used active sources (i.e., controlled by users), to present a new alternative technique for surface-wave analysis of passive data (i.e., seismic sources not controlled by users).
Sarah L. Morton +4 more
openaire +1 more source