Three dimensional high-resolution acoustic imaging of the sub-seabed
Three dimensional high-resolution acoustic imaging of the sub-seabed
Chirp sub-bottom profilers are marine acoustic devices that use a known and repeatable frequency-modulated source signature to produce vertical seismic reflection cross-sections of the sub-seabed. Here a 3D Chirp system is described that operates in the frequency range of 1.5–13 kHz, to produce a three-dimensional image of the sub-seabed, with typical penetration of 10–30 m and decimetric horizontal and vertical resolution. The system design incorporates a rigid frame that contains the Chirp source array together with 60 receiver elements, with positioning provided by an integrated real-time-kinematic (RTK) global positioning system (GPS). The system can be surface towed from a small survey vessel and can be applied to targets of marine geological, engineering, archaeological and defence interest. Data acquisition and processing are described for a case study which images a buried engineering structure in the Port of Southampton.
chirp, 3D chirp, 3D seismics, high-resolution seismics
412-421
Gutowski, Martin
cd31d0d7-2bcc-4c54-8b33-610ce765d7e5
Bull, Jonathan M.
974037fd-544b-458f-98cc-ce8eca89e3c8
Dix, Justin K.
efbb0b6e-7dfd-47e1-ae96-92412bd45628
Henstock, Timothy J.
27c450a4-3e6b-41f8-97f9-4e0e181400bb
Hogarth, Peter
655cda79-d358-4f19-9ac1-080d358db76e
Hillier, Tom
c004fd6e-6316-4ea2-847b-36903227a944
Leighton, Timothy G.
3e5262ce-1d7d-42eb-b013-fcc5c286bbae
White, Paul R.
2dd2477b-5aa9-42e2-9d19-0806d994eaba
May 2008
Gutowski, Martin
cd31d0d7-2bcc-4c54-8b33-610ce765d7e5
Bull, Jonathan M.
974037fd-544b-458f-98cc-ce8eca89e3c8
Dix, Justin K.
efbb0b6e-7dfd-47e1-ae96-92412bd45628
Henstock, Timothy J.
27c450a4-3e6b-41f8-97f9-4e0e181400bb
Hogarth, Peter
655cda79-d358-4f19-9ac1-080d358db76e
Hillier, Tom
c004fd6e-6316-4ea2-847b-36903227a944
Leighton, Timothy G.
3e5262ce-1d7d-42eb-b013-fcc5c286bbae
White, Paul R.
2dd2477b-5aa9-42e2-9d19-0806d994eaba
Gutowski, Martin, Bull, Jonathan M., Dix, Justin K., Henstock, Timothy J., Hogarth, Peter, Hillier, Tom, Leighton, Timothy G. and White, Paul R.
(2008)
Three dimensional high-resolution acoustic imaging of the sub-seabed.
Applied Acoustics, 69 (5), .
(doi:10.1016/j.apacoust.2006.08.013).
Abstract
Chirp sub-bottom profilers are marine acoustic devices that use a known and repeatable frequency-modulated source signature to produce vertical seismic reflection cross-sections of the sub-seabed. Here a 3D Chirp system is described that operates in the frequency range of 1.5–13 kHz, to produce a three-dimensional image of the sub-seabed, with typical penetration of 10–30 m and decimetric horizontal and vertical resolution. The system design incorporates a rigid frame that contains the Chirp source array together with 60 receiver elements, with positioning provided by an integrated real-time-kinematic (RTK) global positioning system (GPS). The system can be surface towed from a small survey vessel and can be applied to targets of marine geological, engineering, archaeological and defence interest. Data acquisition and processing are described for a case study which images a buried engineering structure in the Port of Southampton.
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More information
Submitted date: 12 May 2006
Published date: May 2008
Additional Information:
(Also published in Applied Acoustics 69(3) as
a result of publisher's error).
Keywords:
chirp, 3D chirp, 3D seismics, high-resolution seismics
Identifiers
Local EPrints ID: 51049
URI: http://eprints.soton.ac.uk/id/eprint/51049
ISSN: 0003-682X
PURE UUID: 734c783f-ecd3-428e-ab8c-79032aa5e355
Catalogue record
Date deposited: 01 May 2008
Last modified: 11 Jul 2024 01:39
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Contributors
Author:
Martin Gutowski
Author:
Peter Hogarth
Author:
Tom Hillier
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