TY - GEN
T1 - Pseudo-3D Modeling and Inversion of Transversely-loaded Seismic Testing on Elastic Layered Media
AU - Wu, T. J.
AU - Lin, C. P.
AU - Pan, E.
N1 - Publisher Copyright:
© 2023 NSGE. All Rights Reserved.
PY - 2023
Y1 - 2023
N2 - The estimation of shear wave velocity profile is an important issue in near surface geophysics. Love wave analysis is a useful tool for shear wave velocity estimation for its simplicity over the Rayleigh wave, and the 1D inversion in the transformed domain reduces the non-linearity and completely avoid the need for source estimation. In this study, a 2D forward model of dynamic response simulating for isotropic, elastic-layered system under transversal strip loading is presented. Focusing on examining the full wavefield in frequency-phase velocity domain (i.e., full velocity spectrum (FVS)), we compare the FVS of the proposed method to FVS from true three dimensional (3D) solutions. A post-processing approach is proposed to modify the 2D solution to better fit the 3D solution. This modified 2D solution could replace the true but computationally intensive 3D solution for forward modelling of FVS. Inversion of VS profile in the transformed domain can be significantly improved based on the presented forward model.
AB - The estimation of shear wave velocity profile is an important issue in near surface geophysics. Love wave analysis is a useful tool for shear wave velocity estimation for its simplicity over the Rayleigh wave, and the 1D inversion in the transformed domain reduces the non-linearity and completely avoid the need for source estimation. In this study, a 2D forward model of dynamic response simulating for isotropic, elastic-layered system under transversal strip loading is presented. Focusing on examining the full wavefield in frequency-phase velocity domain (i.e., full velocity spectrum (FVS)), we compare the FVS of the proposed method to FVS from true three dimensional (3D) solutions. A post-processing approach is proposed to modify the 2D solution to better fit the 3D solution. This modified 2D solution could replace the true but computationally intensive 3D solution for forward modelling of FVS. Inversion of VS profile in the transformed domain can be significantly improved based on the presented forward model.
UR - http://www.scopus.com/inward/record.url?scp=85171386588&partnerID=8YFLogxK
U2 - 10.3997/2214-4609.202378033
DO - 10.3997/2214-4609.202378033
M3 - Conference contribution
AN - SCOPUS:85171386588
T3 - 5th Asia Pacific Meeting on Near Surface Geoscience and Engineering, NSGE 2023
BT - 5th Asia Pacific Meeting on Near Surface Geoscience and Engineering, NSGE 2023
PB - European Association of Geoscientists and Engineers, EAGE
T2 - 5th Asia Pacific Meeting on Near Surface Geoscience and Engineering, NSGE 2023
Y2 - 6 March 2023 through 9 March 2023
ER -