Effects of the density perturbation in scattering
The influence of density variation on scattering is investigated in terms of attenuation, coda level, and apparent frequency shift. The influence of density variations is to produce more scattered energy than for velocity perturbations alone with a consequently higher coda level. The temporal decay of the coda is reduced, so that high perturbations in density are associated with a long duration of coda. These effects are particularly important for media with small-scale heterogeneity. Thus...[Show more]
|Collections||ANU Research Publications|
|Source:||Geophysical Research Letters|
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