Go to  Advanced Search

Estimation of surface-free data by curvelet-domain matched filtering and sparse inversion

Show full item record

Files in this item

Files Size Format Description   View
ubc_2011_fall_almatar_mufeed.pdf 3.089Mb Adobe Portable Document Format   View/Open
 
Title: Estimation of surface-free data by curvelet-domain matched filtering and sparse inversion
Author: AlMatar, Mufeed H.
Degree Master of Science - MSc
Program Geophysics
Copyright Date: 2011
Publicly Available in cIRcle 2011-05-09
Abstract: A recent robust multiple-elimination technique, based on the underlying principle that relates primary impulse response to total upgoing wavefield, tries to change the paradigm that sees surface-related multiples as noise that needs to be removed from the data prior to imaging. This technique, estimation of primaries by sparse inversion (EPSI), (van Groenestijn and Verschuur, 2009; Lin and Herrmann, 2009), proposes an inversion procedure during which the source function and surface-free impulse response are directly calculated from the upgoing wavefield using an alternating optimization procedure. EPSI hinges on a delicate interplay between surface-related multiples and pri- maries. Finite aperture and other imperfections may violate this relationship. In this thesis, we investigate how to make EPSI more robust by incorporating curvelet- domain matching in its formulation. Compared to surface-related multiple removal (SRME), where curvelet-domain matching was used successfully, incorporating this step has the additional advantage that matches multiples to multiples rather than predicated multiples to total data as in SRME.
URI: http://hdl.handle.net/2429/34367
Scholarly Level: Graduate

This item appears in the following Collection(s)

Show full item record

All items in cIRcle are protected by copyright, with all rights reserved.

Attribution-NonCommercial 2.5 Canada Except where otherwise noted, this item's license is described as Attribution-NonCommercial 2.5 Canada

UBC Library
1961 East Mall
Vancouver, B.C.
Canada V6T 1Z1
Tel: 604-822-6375
Fax: 604-822-3893