Lowrank one-step wave extrapolation for reverse-time migration
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Analytical solutions in constant
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Sun et al.: Lowrank
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Introduction
Theory
Let
be the seismic wavefield at location
and time
. The acoustic constant-density wave equation can be written as
(1)
where
is velocity and
denotes the Laplacian operator.
Subsections
Analytical solutions in constant velocity
Variable velocity and anisotropy
Higher-order terms from the phase function
Direction-dependent absorbing boundary conditions
Lowrank approximation
RTM imaging conditions
2016-11-16