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dc.contributor.advisor Gardner, Gerald H. F.
dc.creatorLu, Shaoli
dc.date.accessioned 2009-06-04T00:00:59Z
dc.date.available 2009-06-04T00:00:59Z
dc.date.issued 1993
dc.identifier.urihttps://hdl.handle.net/1911/13759
dc.description.abstract Irregularly spaced seismic data have uneven distribution of trace midpoint density on the half-offset (h) versus common-midpoint (y) space. The deviation from uniformity disrupts the cancellation and reinforcement processes of dip moveout (DMO) operators, hence artificial amplitude anomalies are produced on the DMO output. A pre-DMO weighting method is devised to weight each trace based on the trace midpoint density on the (y,h) space. Using the Voronoi Diagram concept, the method is designed to calculate the Voronoi polygon areas associated with mid-points of seismic traces on the (y,h) space. The area of a polygon is inversely proportional to the trace density on the (y,h) space. Scaling each trace by its Voronoi polygon area prior to applying DMO, the undesirable effects caused by irregular spatial sampling can be largely overcome. The method is called the Voronoi weighting method in this thesis. It can be efficiently implemented on vector or parallel computers.
dc.format.extent 85 p.
dc.format.mimetype application/pdf
dc.language.iso eng
dc.subjectGeophysics
Geology
Computer science
dc.title DMO on irregularly spaced seismic data (dip moveout)
dc.type.genre Thesis
dc.type.material Text
thesis.degree.department Earth Science
thesis.degree.discipline Natural Sciences
thesis.degree.grantor Rice University
thesis.degree.level Masters
thesis.degree.name Master of Arts
dc.identifier.citation Lu, Shaoli. "DMO on irregularly spaced seismic data (dip moveout)." (1993) Master’s Thesis, Rice University. https://hdl.handle.net/1911/13759.


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