Nonlinear Coda Wave Interferometry: Sensitivity to wave-induced material property changes analyzed via numerical simulations in 2D
The numerical studies conducted in this paper are based on our previous research (Chen et
al., 2017); through use of the spectral element method, parametric sensitivity studies of
Nonlinear Coda Wave Interferometry (NCWI) are established here and divided into two
parts. In the first part, CWI observables are found to be proportional to the product of the
changes in elastic modulus within the Effective Damaged Zone (EDZ) and the EDZ surface
area. The modifications to intrinsic properties are quantified via an overall wave velocity …
al., 2017); through use of the spectral element method, parametric sensitivity studies of
Nonlinear Coda Wave Interferometry (NCWI) are established here and divided into two
parts. In the first part, CWI observables are found to be proportional to the product of the
changes in elastic modulus within the Effective Damaged Zone (EDZ) and the EDZ surface
area. The modifications to intrinsic properties are quantified via an overall wave velocity …
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