Next:
Dispersion relations
Up:
Table of Contents
Dispersion relations
The magic of color
Survey of migration technique enhancements
A production pitfall: weak instability from v(x)
COSMETIC ASPECT OF WAVE EXTRAPOLATION
t squared
Noise, surface waves and clip
Complex velocity in the 5 degree equation
Absorption
Dispersion
False semicircles in migrated data
Zapping multiples in dip space
Mixed appearance of dip-filtered data
Accentuating faults
Dip filtering
Gain control does dip filtering too
Rejection by incoherence or rejection by filtering?
Spatial scaling before migration
Exponential scaling
The substitution operator
ANISOTROPY DISPERSION IN MIGRATION
Rays not perpendicular to fronts
Wavefront direction and energy velocity
Analyzing errors of migration
Derivation of group velocity equation
Derivation of energy migration equation
Extrapolation equations are not frequency-dispersive.
FREQUENCY DISPERSION IN WAVE-MIGRATION
Spatial aliasing various space axes
Second space derivatives
The 1/6 trick
Time and depth derivatives--the bilinear transform
ACCURACY--THE CONTRACTOR'S VIEW
Lateral derivatives
Viscosity and causality
Retarded Muir recurrence
Stepping in depth
Lightning phase shift migration
Final appearances
Program
About this document ...
Stanford Exploration Project
10/31/1997