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TABLE 2 - ABRIDGED MODIFIED MERCALLI INTENSITY SCALE

Intensity Value and Description

Average peakvelocit

!ce"ti#eter$

per $eco"%&

Average peakacceleratio" !g

i$ gravit ' ()*+

#eter$ per$eco"% $,are%&

I.Not .elt e/cept 0 a ver .e1 "%er e$peciall .avora0lecirc#$ta"ce$ !I Ro$$i-Forel $cale&

II.Felt o"l 0 a .e1 per$o"$ at re$t e$peciall o" pper .loor$o. 3ig3-ri$e 0il%i"g$) Delicatel $$pe"%e% o04ect$ #a $1i"g) !Ito II Ro$$i-Forel $cale&

III.Felt ,ite "oticea0l i"%oor$ e$peciall o" pper .loor$ o.

0il%i"g$ 0t #a" people %o "ot recog"i5e it a$ a" eart3,ake)Sta"%i"g ato#o0ile$ #a rock $lig3tl) 6i0ratio" like pa$$i"g o.trck) Dratio" e$ti#ate%) !III Ro$$i-Forel $cale&

IV.Dri"g t3e %a .elt i"%oor$ 0 #a" ot%oor$ 0 .e1) At"ig3t $o#e a1ake"e%) Di$3e$ 1i"%o1$ %oor$ %i$tr0e%7 1all$#ake creaki"g $o"%) Se"$atio" like a 3eav trck $triki"g0il%i"g) Sta"%i"g ato#o0ile$ rocke% "oticea0l) !I6 to 6 Ro$$i-Forel $cale&

8-2 +)+89g-+)+2g

V.Felt 0 "earl evero"e #a" a1ake"e%) So#e %i$3e$1i"%o1$ a"% $o o" 0roke"7 cracke% pla$ter i" a .e1 place$7"$ta0le o04ect$ overtr"e%) Di$tr0a"ce$ o. tree$ pole$ a"%

ot3er tall o04ect$ $o#eti#e$ "otice%) :e"%l# clock$ #a $top)!6 to 6I Ro$$i-Forel $cale&

2-9 +)+;g-+)+g

VII.Ever0o% r"$ ot%oor$) Da#age "egligi0le i" 0il%i"g$ o.goo% %e$ig" a"% co"$trctio"7 $lig3t to #o%erate i" 1ell-0iltor%i"ar $trctre$7 co"$i%era0le i" poorl 0ilt or 0a%l %e$ig"e%$trctre$7 $o#e c3i#"e$ 0roke") Notice% 0 per$o"$ %rivi"gcar$) !6III Ro$$i-Forel $cale&

*-82 +)8+g-+)89g

VIII.Da#age $lig3t i" $peciall %e$ig"e% $trctre$7co"$i%era0le i" or%i"ar $0$ta"tial 0il%i"g$ 1it3 partialcollap$e7 great i" poorl 0ilt $trctre$) :a"el 1all$ t3ro1" oto. .ra#e $trctre$) Fall o. c3i#"e$ .actor $tack$ col#"$#o"#e"t$ a"% 1all$) ?eav .r"itre overtr"e%) Sa"% a"%#% e4ecte% i" $#all a#o"t$) C3a"ge$ i" 1ell 1ater) :er$o"$%rivi"g car$ %i$tr0e%) !6III@ to I Ro$$i-Forel $cale&

2+-;+ +)29g-+);+g

IX.Da#age co"$i%era0le i" $peciall %e$ig"e% $trctre$7 1ell-%e$ig"e% .ra#e $trctre$ t3ro1" ot o. pl#07 great i"$0$ta"tial 0il%i"g$ 1it3 partial collap$e) Bil%i"g$ $3i.te% o...o"%atio"$) Gro"% cracke% co"$pico$l) "%ergro"% pipe$0roke") !I@ Ro$$i-Forel $cale&

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X.So#e 1ell-0ilt 1oo%e" $trctre$ %e$troe%7 #o$t #a$o"ra"% .ra#e $trctre$ %e$troe% 1it3 .o"%atio"$7 gro"% 0a%lcracke%) Rail$ 0e"t) La"%$li%e$ co"$i%era0le .ro# river 0a"k$ a"%$teep $lope$) S3i.te% $a"% a"% #%) ater $pla$3e% $loppe%over 0a"k$ ! Ro$$i-Forel $cale&

More t3a" =+ More t3a" +)=+g

XI.Fe1 i. a" !#a$o"r& $trctre$ re#ai" $ta"%i"g) Bri%ge$%e$troe%) Broa% .i$$re$ i" gro"%) "%ergro"% pipeli"e$co#pletel ot o. $ervice) Eart3 $l#p$ a"% la"% $lip$ i" $o.tgro"%) Rail$ 0e"t greatl)

XII.Da#age total) ave$ $ee" o" gro"% $r.ace) Li"e$ o. $ig3ta"% level %i$torte%) O04ect$ t3ro1" i"to air)

:ri#ar Sorce Bolt !8((;&

http://www4.nau.edu/geology/aeic/lapaz.html