pcs.tex

国外免费地震资料处理软件包

\def\bea{\begin{eqnarray}}
\def\eea{  \end{eqnarray}}

\def\beq{\begin{equation}}
\def\eeq{  \end{equation}}

\def\req#1{(\ref{#1})}

\def\lp{\left (}
\def\rp{\right)}

\def\lb{\left [}
\def\rb{\right]}

\def\pbox#1{ \fbox {$ \displaystyle #1 $}}

% ------------------------------------------------------------
% trace
\def\tr{\texttt{tr}\;}

% divergence
\def\DIV#1{\nabla \cdot #1}

% curl
\def\CURL#1{\nabla \times #1}

% gradient
\def\GRAD#1{\nabla #1}

% Laplacian
\def\LAPL#1{\nabla^2 #1}
% ------------------------------------------------------------

% stress tensor
\def\ssten{{\bf \sigma}}

\def\ssmat{
\lp \matrix {
 \sigma_{11} &  \sigma_{12}   &  \sigma_{13} \cr
 \sigma_{12} &  \sigma_{22}   &  \sigma_{23} \cr
 \sigma_{13} &  \sigma_{23}   &  \sigma_{33} \cr
} \rp
}

% strain tensor
\def\eeten{{\bf \epsilon}}

\def\eemat{
\lp \matrix {
 \epsilon_{11} &  \epsilon_{12}   &  \epsilon_{13} \cr
 \epsilon_{12} &  \epsilon_{22}   &  \epsilon_{23} \cr
 \epsilon_{13} &  \epsilon_{23}   &  \epsilon_{33} \cr
} \rp
}

% elastic tensor
\def\CC{{\bf C}}

% identity tensor
\def\I{\;{\bf I}}

% particle displacement vector
\def\uu{{\bf u}}

% particle velocity vector
\def\vv{{\bf v}}

% force vector
\def\ff{{\bf f}}

% distance vector
\def\xx{{\bf x}}

% wavenumber vector
\def\kk{{\bf k}}

% normal vector
\def\nn{{\bf n}}

% source vector
\def\ss{{\bf s}}

% receiver vector
\def\rr{{\bf r}}

\def\Fop#1{\mathcal{F}     \lb #1 \rb}
\def\Fin#1{\mathcal{F}^{-1}\lb #1 \rb}

\def\dtwo#1#2  {\frac{\partial^2 #1}{\partial #2^2         }   }
\def\done#1#2  {\frac{\partial   #1}{\partial #2           }   }