Passive Retrieval of Rayleigh Waves in Disordered Elastic Media

Details Passive Retrieval of Rayleigh Waves in Disordered Elastic Media Passive Retrieval of Rayleigh Waves in Disordered Elastic Media

2007-10-08

arxiv.org/abs/0710.1513v1

Physical Review E: Statistical, Nonlinear, and Soft Matter Physics 72 (2005) 046607

Physics

Condensed Matter

Other Condensed Matter

Scientific paper

10.1103/PhysRevE.72.046607

When averaged over sources or disorder, cross-correlation of diffuse fields yield the Green's function between two passive sensors. This technique is applied to elastic ultrasonic waves in an open scattering slab mimicking seismic waves in the Earth's crust. It appears that the Rayleigh wave reconstruction depends on the scattering properties of the elastic slab. Special attention is paid to the specific role of bulk to Rayleigh wave coupling, which may result in unexpected phenomena like a persistent time-asymmetry in the diffuse regime.

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