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- W2326351696 abstract "The MASW method estimates the shear-wave velocity from the properties of the Rayleigh-wave propagation measured within a seismic spread. Shorter wave-length components of the surface-wave sample the shallow parts of the seismic section and longer wave-length components sample the deeper parts of the earth. The greater the wave-length the greater volumes of the earth affect the surface-wave properties. Thus, the surface-wave results are strongly affected by averaging. Such smearing reduces the horizontal resolution of the shear-wave velocity estimates. A method developed to increase the horizontal resolution of any geophysical model by using generalized inversion provided encouraging results applied to the MASW Vs results. The existing method is expanded targeting specifically the improvement of the horizontal resolution of the MASW method. Traditionally MASW data is acquired once moving the seismic source and spread at a chosen direction along the line. If the sampling of the surveyed line is performed twice, by moving the source and the receiver spread in both directions along the line, the MASW unblurring technique can be optimized. An optimal unblurring operator is sought for which the two unblurred lines (shot from different directions) would have the best match (would be least different). Application of the proposed optimized unblurring method on real data did not provide a unique solution for the particular data set. The proposed technique can be a valuable tool for improving the horizontal resolution of the MASW method but also of any other type of overlapping geophysical data set." @default.
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- W2326351696 date "2006-01-01" @default.
- W2326351696 modified "2023-09-26" @default.
- W2326351696 title "OPTIMIZING HORIZONTAL-RESOLUTION IMPROVEMENT OF THE MASW METHOD" @default.
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- W2326351696 doi "https://doi.org/10.3997/2214-4609-pdb.181.116" @default.
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