\section{$B7W;;<jK!(B}

\subsection{$B7W;;<j=g(B}

$BCOI=5$05(B, $B3F<oJ*M}Dj?t(B($BHfG.(B, $B=ENO2CB.EY(B, $B5$BNDj?t(B)$B$O%Q%i%a!<%?$H$7$FM?(B
$B$($k(B. $B7W;;$O0J2<$N<j=g$G9T$J$&(B.
\begin{itemize}
  \item [\bf 1.] $BE,Ev$J29EY(B($B290L(B)$BJ,I[$r=i4|>r7o$H$7$FM?$($k(B. 

  \item [\bf 2.] $B>uBVJ}Dx<0$H@E?e05J?9U$N<0(B\Deqref{$B@E?e05$N<0(B}$B$rAH9g$;(B,  
	     $BL)EY$H05NO$N1tD>J,I[$r7W;;$9$k(B.

  \item [\bf 3.] \Deqref{$B4pACJ}Dx<0(B}$B<0$rJ|<M2CG.(B/$BNd5Q$N4sM?$@$1$rMQ$$$F(B, 
	     $B29EY(B($B290L(B)$BJ,I[$N2>CM$r5a$a$k(B.
	
  \item [\bf 4.] $B29EY(B($B290L(B)$BJ,I[$N2>CM$+$i1tD>3H;678?t$r7W;;$9$k(B.

  \item [\bf 5.] \Deqref{$B4pACJ}Dx<0(B}$B<0$N3H;69`$N7W;;$r9T$J$&(B.

  \item [\bf 6.] 2. $B$KLa$k(B\Deqref{$B4pACJ}Dx<0(B}$B<0$N3H;69`$N7W;;$r9T$J$&(B.
\end{itemize}

\subsection{$B@_Dj(B}
\begin{itemize}
  \item $BBg5$$O(B CO${}_{2}$ $B$N$_$G9=@.$5$l$k$H$9$k(B. $BJ*@-Dj?t$O$=$NCM$H$9$k(B.
        $B5(@a$H0^EY$O(B Pollack {\it et al}. (1979) $B$K$J$i$$(B, $L_{s}=90$,
	20${}^{\circ}$N $B$H$9$k(B.
  \item $B7W;;NN0h$O9bEY(B 20 km $B$^$G$H$9$k(B. $B1tD>3J;R$O9bEY(B 100 m $B0J2<$KITEy(B
	$B4V3V$G(B 5 $BE@(B, $B9bEY(B 100 m $B0J>e(B $B$O3J;R4V3V(B 100m $B$G@_Dj$9$k(B. $B;~4V3J(B
	$B;R4V3V$O%9%T%s%"%C%W;~$O(B 15 $BIC(B, $BF|JQ2=7W;;$G$O(B 0.5 $BIC$G$"$k(B.
	$B=i4|>r7o$O(B 220 K $BEy29Bg5$$H(B 160 K $BEy29Bg5$$rM?$($k(B.
  \item $B%9%T%s%"%C%W$N$?$a$N7W;;%b%G%k;~4V$O(B 30 $BF|$G$"$k(B. $B$3$N$H$-A0F|$N(B
	$BF1;~9o$H$N29EY:9$O:GBg$G(B 0.1 K $B0J2<$G$"$k(B. 
\end{itemize}

