NDLI: High-resolution seismic processing by Gabor deconvolution

Please wait, while we are loading the content...

High-resolution seismic processing by Gabor deconvolution

Content Provider	Scilit
Author	Chen, Zengbao Wang, Yanghua Chen, Xiaohong Li, Jingye
Copyright Year	2013
Description	Journal: Journal of Geophysics and Engineering Since viscoelastic attenuation effects are ubiquitous in subsurface media, the seismic source wavelet rapidly evolves as the wave travels through the subsurface. Eliminating the source wavelet and compensating the attenuation effect together may improve seismic resolution. Gabor deconvolution can achieve these two processes simultaneously, by removing the propagating wavelet which is the combination of the source wavelet and the attenuation effect. The Gabor deconvolution operator is determined based on the Gabor spectrum of a nonstationary seismic trace. By assuming white reflectivity, the Gabor amplitude spectrum can be smoothed to produce the required amplitude spectrum of the propagating wavelet. In this paper, smoothing is set as a least-squares inverse problem, and is referred to as regularized smoothing. By assuming that the source wavelet and the attenuation process are both minimum phased, the phase spectrum of the propagating wavelet can be defined by the Hilbert transform of the natural logarithm of the smoothed amplitude spectrum. The inverse of the complex spectrum of the propagating wavelet is the Gabor deconvolution operator. Applying it to the original time–frequency spectrum of the nonstationary trace produces an estimated time–frequency spectrum of reflectivity series. The final time-domain high-resolution trace, obtained by an inverse Gabor transform, is close to a band-pass filtered version of the reflectivity series.
Related Links	http://spiral.imperial.ac.uk/bitstream/10044/1/21482/8/JGE_2013_065002_Gabor_deconvolution.pdf http://iopscience.iop.org/1742-2140/10/6/065002/pdf/1742-2140_10_6_065002.pdf
ISSN	17422132
DOI	10.1088/1742-2132/10/6/065002
Journal	Journal of Geophysics and Engineering
Issue Number	6
Volume Number	10
Language	English
Publisher	IOP Publishing
Publisher Date	2013-10-23
Access Restriction	Open
Subject Keyword	Journal: Journal of Geophysics and Engineering Acoustics and Ultrasonics Attenuation Effect Gabor Deconvolution
Content Type	Text
Resource Type	Article
Subject	Industrial and Manufacturing Engineering Geology Geophysics Management, Monitoring, Policy and Law

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in