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Analysis of very high frequency propagation in sediments: experimental results and modelling

Analysis of very high frequency propagation in sediments: experimental results and modelling
Analysis of very high frequency propagation in sediments: experimental results and modelling
A current QinetiQ study is investigating the propagation of sound waves into sediment at frequencies higher than 300 kHz. Previous work has found notable discrepancies between model predictions and experimental results and comparisons are inconsistent and unreliable. This new work package investigates the development of new scattering theories for frequencies ranging from 300 kHz to 1 MHz. In particular, the application of a pseudospectral time difference approached is analyzed. The model originally developed for lower frequency applications, is set up in various geometrical scenarios and for varying very high frequencies. Results show the received simulated pulses obtained for hydrophones placed within the sediment and source colocated. Furthermore, simulations are compared in tank experimental data. The controlled tank experiments were conducted by Southampton University and data are analyzed and discussed for various conditions and frequencies.
0001-4966
2394
Brothers, R.
6331d686-0263-44b5-8e64-6723d0db965c
Page, S.
b7346901-3148-460e-82d5-9bc6b6368342
Heald, G.J.
413b7ad0-aeea-4af6-99c5-5c16c6f1a8cb
Leighton, T.G.
3e5262ce-1d7d-42eb-b013-fcc5c286bbae
Simpson, M.D.
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Dix, J.K.
efbb0b6e-7dfd-47e1-ae96-92412bd45628
Brothers, R.
6331d686-0263-44b5-8e64-6723d0db965c
Page, S.
b7346901-3148-460e-82d5-9bc6b6368342
Heald, G.J.
413b7ad0-aeea-4af6-99c5-5c16c6f1a8cb
Leighton, T.G.
3e5262ce-1d7d-42eb-b013-fcc5c286bbae
Simpson, M.D.
e54519dc-bbde-4c4e-8141-8fdc527b0936
Dix, J.K.
efbb0b6e-7dfd-47e1-ae96-92412bd45628

Brothers, R., Page, S., Heald, G.J., Leighton, T.G., Simpson, M.D. and Dix, J.K. (2002) Analysis of very high frequency propagation in sediments: experimental results and modelling. Journal of the Acoustical Society of America, 112 (5), 2394.

Record type: Article

Abstract

A current QinetiQ study is investigating the propagation of sound waves into sediment at frequencies higher than 300 kHz. Previous work has found notable discrepancies between model predictions and experimental results and comparisons are inconsistent and unreliable. This new work package investigates the development of new scattering theories for frequencies ranging from 300 kHz to 1 MHz. In particular, the application of a pseudospectral time difference approached is analyzed. The model originally developed for lower frequency applications, is set up in various geometrical scenarios and for varying very high frequencies. Results show the received simulated pulses obtained for hydrophones placed within the sediment and source colocated. Furthermore, simulations are compared in tank experimental data. The controlled tank experiments were conducted by Southampton University and data are analyzed and discussed for various conditions and frequencies.

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Published date: 2002

Identifiers

Local EPrints ID: 10295
URI: http://eprints.soton.ac.uk/id/eprint/10295
ISSN: 0001-4966
PURE UUID: 689f7d28-8fd0-4551-ba5f-2e94046242b8
ORCID for T.G. Leighton: ORCID iD orcid.org/0000-0002-1649-8750

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Date deposited: 01 Aug 2005
Last modified: 22 Jul 2020 00:25

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Contributors

Author: R. Brothers
Author: S. Page
Author: G.J. Heald
Author: T.G. Leighton ORCID iD
Author: M.D. Simpson
Author: J.K. Dix

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