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The previous analysis appears 1-dimensional in depth.
Conventional interval velocity estimation builds a velocity-depth model
independently at each lateral location.
Here, we have a logical path for combining measurements
from various lateral locations.
We can change the regularization
to something like
.
Instead of merely minimizing the vertical gradient of velocity,
we minimize its spatial gradient.
Luckily, we have preconditioning and the helix to speed the solution.

* *

2015-05-07