****************************************************************************************************************

$BBh(B 88 $B2s(B $BBg5$3$MN7wJ*M}7O%;%_%J!<(B $B$N$*$7$i$;(B

$BF|!!;~!'(B2000$BG/(B 11$B7n(B 9$BF|(B($BLZ(B) $B8aA0(B 9:30 $B!](B 12:00
$B>l!!=j!'(B$BDc292J3X8&5f=j(B $B?7Eo(B $B#33,9VF2(B

$BH/I=$BC]Fb(B $B8,2p(B ($B6K0hBg5$3$MN3X9V:B(B $B65 $BBj!!L\!'(B$BG.BSB@J?MN$N8=:_$N>u67(B

$BH/I=$B?\8T(B $B9@(B ($BBg=[4DNO3X9V:B(B D3)
$BBj!!L\!'(B$B?tCM%b%G%k$rMQ$$$?0!G.BS0h$N3$MN=[4D$N8&5f(B

****************************************************************************************************************

$BG.BSB@J?MN$N8=:_$N>u67(B ($BC]Fb(B $B8,2p(B) $BH/I=MW;](B :

  
 $B:#G/$N2F$3$m!"@>B@J?MN$KCH?e$,$+$J$jC_@Q$5$l$^$7$?!#$3$l$O%(%k%K!<%K%g$N(B 
 $B@h6n$1$+!)$H$b;W$o$l$^$7$?!#0lJ}!":G6a!"(BCharge-discharge$BM}O@$H$$$&$N$,2?(B 
 $B?M$+$N8&5f'$5$l$F$$$^$9!#$3$l$K$h$k$H!"CH?e$NEl@>$N0\F0$h$j$b!"(B 
 $B@VF;0h$K$I$l$@$1CH?e$,Cy$^$C$F$-$?$+$,=EMW$H$5$l$F$$$^$9!#$=$N4QE@$+$i$9(B 
 $B$k$H!"$"$^$jCy$^$C$F$$$J$$!"$D$^$j%(%k%K!<%K%g$K$O$J$j$=$&$b$J$$!"$H$$$&(B 
 $B7kO@$K$J$j$^$9!#$H$$$&LLGr$$>u67$@$C$?$N$G$9$,!"B@J?MN$NCH(B 
 $B?e$NC_@Q$O2r>C$7$F$7$^$$$^$7$?!#$H$$$&Lu$GB?>/Go;RH4$1$N$H$3$m$O$"$k$G$9(B 
 $B$,!&!&!&(B 
  

$B?tCM%b%G%k$rMQ$$$?0!G.BS0h$N3$MN=[4D$N8&5f(B ($B?\8T(B $B9@(B) $BH/I=MW;](B :

  
 $B0!G.BS0h$N3$MN=[4D$NOC$G$9!#(B 
 Luyten et al. (1983) $B$H$=$l$KB3$/0lO"$NDL5$?e29LvAXM}O@%b%G%k$O!"(B 
 $B3$I=LL$G$NL)EYJ,I[$HIw1~NO$K$h$j!"0!G.BS0h$N>eIt?e29LvAX$N9=B$(B 
 $B$,7hDj$5$l$k$H$9$k$b$N$G!"3$MN=[4D$KBP$9$kB?$/$NCN8+$r2f!9$KM?(B 
 $B$($?!#$^$?F1;~$K!"0!G.BS0h$G$ODL5$$5$l$F$$$J$$L)EYLL$N9=B$$O$I(B 
 $B$N$h$&$K$7$F7hDj$5$l$k$N$+!"$H$$$&5?Ld$r$bEj$2$+$1$F$$$k!#(B 
 $B@>4_6-3&N.$K$h$C$FN.@~$NJD$8$kNN0h(B (Western pool region)$B$K$D$$(B 
 $B$F$O!"(BRhines and Young (1982) $B$,$=$N2r7h$X$NF;6Z$r<($7$F$$$k$b(B 
 $B$N$N!"0!4(BS$GDL5$$5$l$F$$$k$h$&$JL)EYLL!"5Z$SEl4_6-3&$N1F6A$r(B 
 $Bu67(B 
 $B@_Dj2<$K1w$1$k?tCMR2p$H$=$NLdBjE@(B 
  
 2. $BEl4_6-3&$N9=B$$H$=$N1F6A(B 
                        ($BA02s$NH/I=$G$*OC$7$7$?ItJ,$OBgI}$K>JN,(B) 
  
 3. $B0!G.BS0l0!4(BS=[4D6-3&$N9=B$(B 
  

-----
$BO"Mm@h(B

$B@PEO(B $B@5 $BBg5$3$MN7w4D6-2J3X@l96Bg=[4DNO3X(B / $B5$8u%b%G%j%s%09V:B(B
mail-to:momoko@ees.hokudai.ac.jp / Tel: 011-706-2359