In this chapter I applied the tomography methodology
described in Chapters~\ref{chap:tau} and \ref{chap:reg} to a 2~-~D dataset.
I showed how to construct a complex steering filter operator based
on reflector geometry and {\it a priori} knowledge of the acoustic
properties of the layers.
The final migration result was significantly improved over
the  initial migration showing flatter angle gathers
and overall crisper image.
I hypothesize that much of the remaining moveout is due to 3-D effects,
not resolvable by a 2-D tomography.
