\chapter{Tomography in the tau domain} \label{chap:tau}
\input{../tau/macros_act}

\section{Introduction and summary}
\input{../tau/intro_act}

\section{Ray based tomography in depth}
\input{../tau/depth_act}

\section{Ray based tomography in tau}
\input{../tau/tau_act}

%background
\par
%By formulating our back projection operator in terms of vertical
%travel-time ($\tau$) rather than depth our reflector locations become
%more stable \cite{Biondi.sep.95.biondo1,Clapp.sep.97.bob2}.  

\section{Operator change in tau vs. depth}
\input{../tau/better_act}

%\section{Model resolution tau vs. depth tomography}
%\input{../tau/resolution_act}

\section{Angle domain migration tomography}
\input{../tau/angle_act}

\section{Comparing depth and tau tomography}
\input{../tau/synth_act}

%\section{Conclusions}
%Formulating tomography in tau rather than depth space makes

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\cleardoublepage