HAL will be down for maintenance from Friday, June 10 at 4pm through Monday, June 13 at 9am. More information
Skip to Main content Skip to Navigation
Journal articles

Coherent backscattering of acoustic waves in the near field

Abstract : Recent studies have shown that interference plays an important role in various phenomena observed for waves propagating through random media. Among these phenomena, the so-called cone of coherent backscattering has received much attention in optics. In this paper, we study analytically and numerically the coherent backscattering of acoustic waves in a seismological context. In particular, we focus on the near-field detection of scattered waves and the effect of transient sources. We show that interference results in an increase of the coda intensity as compared to the prediction of radiative transfer theory. After a transient regime, a spot of backscattering enhancement stabilizes in a sphere of radius half a wavelength centred at the source of seismic waves. Several effects such as absorption, boundary conditions and scattering anisotropy are investigated. Our study demonstrates the robustness of coherent backscattering and may offer a possible means of discriminating single versus multiple scattering in the observed coda.
Document type :
Journal articles
Complete list of metadata

https://hal-insu.archives-ouvertes.fr/insu-03606662
Contributor : Nathalie Pothier Connect in order to contact the contributor
Submitted on : Saturday, March 12, 2022 - 7:55:15 AM
Last modification on : Sunday, March 13, 2022 - 3:26:22 AM

File

145-3-593.pdf
Publisher files allowed on an open archive

Licence


Distributed under a Creative Commons Attribution 4.0 International License

Identifiers

Collections

Citation

L. Margerin, M. Campillo, B. A. van Tiggelen. Coherent backscattering of acoustic waves in the near field. Geophysical Journal International, Oxford University Press (OUP), 2001, 145, pp.593-603. ⟨10.1046/j.0956-540X.2001.01400.x⟩. ⟨insu-03606662⟩

Share

Metrics

Record views

12

Files downloads

3