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Optimal processing of marine high-resolution seismic reflection (Chirp) data

Biomedical Sciences Research Institute Computer Science Research Institute Environmental Sciences Research Institute Nanotechnology & Advanced Materials Research Institute

Quinn, R, Bull, JM and Dix, JK (1998) Optimal processing of marine high-resolution seismic reflection (Chirp) data. Marine Geophysical Researches, 20 (1). pp. 13-20. [Journal article]

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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.

Item Type:Journal article
Faculties and Schools:Faculty of Life and Health Sciences
Research Institutes and Groups:Environmental Sciences Research Institute
Environmental Sciences Research Institute > Maritime Archaeology
ID Code:14487
Deposited By:Dr Rory Quinn
Deposited On:29 Jun 2010 09:10
Last Modified:15 Jun 2011 11:18

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