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The craft of wavefield
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The craft of wavefield extrapolation
ABSORBING SIDES
Data padding
Truncation at cable ends and at survey ends
Engquist boundaries for the scalar wave equation
Engquist sides for the extrapolation equation
Size of the reflection coefficient
TUNING UP FOURIER MIGRATIONS
Dips greater than 90 degrees
Stopping phase-shift migration wraparound (S. Levin)
Controlling Stolt migration wraparound
Stolt stretch
Gazdag's v(x) method
IMPEDANCE
Beware of infinity!
Z - transform
Review of impedance filters
Causal integration
Muir's rules for combining impedances
Impedance defined from reflectance
Functional analysis
Wide-angle wave extrapolation
Fractional integration and constant Q
THE BULLETPROOFING OF MUIR AND GODFREY
Stability of the differential equation
Stability of the difference equation
Application to 45 degree wavefield extrapolation
About this document ...
Stanford Exploration Project
10/31/1997
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