Preservation of low frequencies in wide-angle data processing for sub-basalt imaging

Masoomzadeh, Hassan and Barton, Penny J. and Singh, Satish C. (2006) Preservation of low frequencies in wide-angle data processing for sub-basalt imaging. SEG Expanded Abstracts. pp. 2832-2836. DOI 10.1190/1.2370113

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Low frequencies (below 10 Hz) are less attenuated and less scattered than high frequencies while penetrating through highly heterogeneous basalt layers. Therefore imaging of the deep targets using wide-angle seismic data (e.g. subbasalt imaging) requires exploitation of a narrow band of the lower end of the spectrum. Spectral whitening is employed to enhance the resolution in the stacked section by intensifying the low-frequency component of each small segment of traces. Spectral whitening in the tau-p domain may be used for tackling the spectral effects introduced by directional propagation. A stacked section of a wide-angle data set from the Faeroe-Shetland Basin shows that a higher resolution image of the deep sub-basalt structure of the area may be achieved when low frequencies are exploited. ©2006 Society of Exploration Geophysicists

Item Type: Article
Uncontrolled Keywords: 2006AREP;
Subjects: 02 - Geodynamics, Geophysics and Tectonics
Divisions: 02 - Geodynamics, Geophysics and Tectonics
Journal or Publication Title: SEG Expanded Abstracts
Page Range: pp. 2832-2836
Identification Number: 10.1190/1.2370113
Depositing User: Sarah Humbert
Date Deposited: 15 Dec 2011 17:43
Last Modified: 23 Jul 2013 10:03

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