Structural uncertainty of time-migrated seismic images

Structural information in seismic images is uncertain. The main cause of this uncertainty is uncertainty in velocity estimation. We adopt the technique of velocity continuation for estimating velocity uncertainties and corresponding structural uncertainties in time-migrated images. Data experiments...

Full description

Saved in:
Bibliographic Details
Published in:Journal of applied geophysics 2014-02, Vol.101, p.27-30
Main Authors: Fomel, Sergey, Landa, Evgeny
Format: Article
Language:English
Subjects:
Prestack time migration
Seismic imaging
Uncertainty quantification
Velocity analysis
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Structural information in seismic images is uncertain. The main cause of this uncertainty is uncertainty in velocity estimation. We adopt the technique of velocity continuation for estimating velocity uncertainties and corresponding structural uncertainties in time-migrated images. Data experiments indicate that structural uncertainties can be significant even when both structure and velocity variations are mild. •Structural uncertainty in time-domain seismic images can be constructively estimated.•Structural uncertainty is caused by uncertainties in velocity estimation.•Structural uncertainty is a product of velocity uncertainty and structure sensitivity.•Velocity continuation provides a tool for structural sensitivity analysis.•A field data example shows that structural uncertainties can be significant.
ISSN:0926-9851
1879-1859
DOI:10.1016/j.jappgeo.2013.11.010