Optimal Processing of Marine High-Resolution Seismic Reflection (Chirp) Data
Optimal Processing of Marine High-Resolution Seismic Reflection (Chirp) Data
Chirp frequency-modulated (FM) systems offer deterministic, repeatable source-signatures for high-resolution, normal incidence marine seismic reflection data acquisition. An optimal processing sequence for uncorrelated Chirp data is presented to demonstrate the applicability of some conventional seismic reflection algorithms to high-resolution data sets, and to emphasise the importance of a known source-signature. An improvement of greater than 60dB in the signal- to-noise ratio is realised from correlating the FM reflection data with the transmitted pulse. Interpretability of ringy deconvolved data is enhanced by the calculation of instantaneous amplitudes. The signal-to-noise ratio and lateral reflector continuity are both improved by the application of predictive filters whose effectiveness are aided by the repeatability of the Chirp source.
Chirp, processing, source-signature, high-resolution seismic
13-20
Quinn, R.
a5ae0628-5870-46da-81a6-8d4eff3b3270
Bull, J.M.
974037fd-544b-458f-98cc-ce8eca89e3c8
Dix, J.K.
efbb0b6e-7dfd-47e1-ae96-92412bd45628
February 1998
Quinn, R.
a5ae0628-5870-46da-81a6-8d4eff3b3270
Bull, J.M.
974037fd-544b-458f-98cc-ce8eca89e3c8
Dix, J.K.
efbb0b6e-7dfd-47e1-ae96-92412bd45628
Quinn, R., Bull, J.M. and Dix, J.K.
(1998)
Optimal Processing of Marine High-Resolution Seismic Reflection (Chirp) Data.
Marine Geophysical Researches, 20, .
(doi:10.1023/A:1004349805280).
Abstract
Chirp frequency-modulated (FM) systems offer deterministic, repeatable source-signatures for high-resolution, normal incidence marine seismic reflection data acquisition. An optimal processing sequence for uncorrelated Chirp data is presented to demonstrate the applicability of some conventional seismic reflection algorithms to high-resolution data sets, and to emphasise the importance of a known source-signature. An improvement of greater than 60dB in the signal- to-noise ratio is realised from correlating the FM reflection data with the transmitted pulse. Interpretability of ringy deconvolved data is enhanced by the calculation of instantaneous amplitudes. The signal-to-noise ratio and lateral reflector continuity are both improved by the application of predictive filters whose effectiveness are aided by the repeatability of the Chirp source.
Text
Quinn et al 1998 MGR Optimal Processing Chirp.pdf
- Accepted Manuscript
More information
Published date: February 1998
Keywords:
Chirp, processing, source-signature, high-resolution seismic
Organisations:
Geology & Geophysics
Identifiers
Local EPrints ID: 346550
URI: http://eprints.soton.ac.uk/id/eprint/346550
ISSN: 0025-3235
PURE UUID: 9f7082b5-0129-423f-9b05-ef2d5a54aebc
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Date deposited: 02 Jan 2013 11:16
Last modified: 15 Mar 2024 02:46
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Author:
R. Quinn
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