Test on Marmousi Data of Velocity Analysis by Perturbation,

Abstract

Velocity model determination on the Marmousi data is a major challenge for current velocity analysis methods because of the extreme complexity of the model. A new velocity analysis method has been developed and is tested on the Marmousi data. This method characterizes a velocity distribution by the macro model and uses an analytical formula to update velocity. Our formula estimates the update in velocity by computing a derivative function of imaged depths with respect to velocity in a general background medium context. This formula is more accurate than conventional ones based on hyperbolic residual moveout when the medium has strongly lateral velocity variations. The test results show our velocity analysis method to be superior for complex media such as in the Marmousi model.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1995
Accession Number
ADA327489

Entities

People

  • Zhenyue Liu

Organizations

  • Colorado School of Mines

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Algorithms
  • Amplitude
  • Colorado
  • Computer Science
  • Computers
  • Data Sets
  • Electronic Mail
  • Equations
  • Layers
  • Migration
  • Military Research
  • Perturbations
  • Ray Tracing
  • Reflectors
  • Residuals
  • Two Dimensional
  • Wave Phenomena

Readers

  • Calculus or Mathematical Analysis
  • Computational Modeling and Simulation
  • Seismology