A numerical study of super-resolution through fast 3D wideband algorithm for scattering in highly-heterogeneous media

Wave Motion ◽  
2017 ◽  
Vol 70 ◽  
pp. 113-134 ◽  
Author(s):  
Pierre-David Létourneau ◽  
Ying Wu ◽  
George Papanicolaou ◽  
Josselin Garnier ◽  
Eric Darve
Keyword(s):  
Heterogeneous Media ◽  
Numerical Study ◽  
Super Resolution

Surface Wave Dispersion in a Layered Medium for Varying Subsurface Scenarios

2020 ◽  
Vol 11 (2) ◽  
pp. 26-49
Author(s):  
Narayan Roy ◽  
Aniket Desai ◽  
Ravi S. Jakka
Keyword(s):  
Surface Wave ◽  
Dispersion Curve ◽  
Heterogeneous Media ◽  
Numerical Study ◽  
Wave Dispersion ◽  
Dispersion Property ◽  
Surface Wave Dispersion ◽  
Different Types ◽  
Stiffness Variation ◽  
A Site

Surface wave techniques are widely used to characterize a site based on shear wave velocity (Vs) or stiffness variation with depth. It utilizes the dispersion property of Rayleigh wave in a heterogeneous media. Dispersion curve is obtained from analyzing collected field test data and the final Vs profile is extracted from the inversion of the generated dispersion curve. The varying subsoil structures influence whether one or more Rayleigh modes will participate in the resulting wave propagation phenomenon. So, neglecting the higher mode participation may sometimes results in a completely different velocity profile than the actual existing one. In this paper, a detailed and comprehensive numerical study has been performed using finite element method for different types of soil profiles with different half-space impedances to assess how it affects the surface wave dispersion phenomenon. In addition to that, the effect of different data acquisition parameters on surface wave dispersion has also been studied.

Spin‐echoes for diffusion in bounded, heterogeneous media: A numerical study

1980 ◽  
Vol 72 (2) ◽  
pp. 1285-1292 ◽  
Author(s):  
Gary P. Zientara ◽  
Jack H. Freed
Keyword(s):  
Heterogeneous Media ◽  
Numerical Study ◽  
Spin Echoes

Numerical study of the low-frequency atomic dynamics in a Lennard-Jones glass

1998 ◽  
Vol 77 (2) ◽  
pp. 473-484 ◽  
Author(s):  
M. Sampoli, P. Benassi, R. Dell'Anna,
Keyword(s):  
Numerical Study ◽  
Low Frequency ◽  
Lennard Jones
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