PHIVOLCS Earthquake Intensity Scale.docx

PHIVOLCS Earthquake Intensity Scale (PEIS) [2] Intensity ScaleDescriptinEqui!ale ScaleDescriptinEqui!alent nt t ther  seis"ic scales [#]$%i&ie% $ercal $er calli liShin% Shin% I'Scarcely perceptile •

Delicately alance% ects are %isture% sli*htly'

Still +ater in cntainers scillates sl+ly' II'Sli*htly &elt •

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,elt y &e+ in%i!i%uals at rest in%rs'

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Han*in* ects s+in* sli*htly' sli*htly'

Still +ater in cntainers scillates nticealy' III'-eak 

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,urniture an% ther hea!y ects are %isplace%'

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-all plaster "ay crack'

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Peple "ay lse alance'

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S"all church ells "ay rin*'

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I& n the ra%. it "ay &eel like %ri!in* +ith &lat tires' Very l% r prly uilt huses an% "an0 "a%e structures are sli*htly %a"a*e% thu*h +ell0uilt structures are nt a&&ecte%' a&&ecte%' Li"ite% rck&alls an% rllin* ul%ers ccur in hilly t "untainus areas an% escarp"ents'

1rees shake ' VII'Destructi!e •

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,elt y "any peple in%rs. especially in upper &lrs' Han*in* ects s+in* "%erately' "%erately'

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Hea!y ects an% &urniture !erturn r tpple'

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 4u"erus lan%sli%es lan%sli%es an% rck&alls ccur ccur in "untainus an% hilly areas' 5ul%ers are thr+n ut &r" their  psitins particularly particularly near the epicenter' epicenter'

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,issures an% &aults rupture'

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1rees shake !ilently'

-ater splashes !er %ikes r the anks & ri!ers' I6'De!astatin* I6'De!astatin*

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Peple are &rce% t the *run%'

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$st uil%in*s are ttally %a"a*e%'

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1rees are shaken !ery !ilently +ith s"e tpple% r rken' 5ul%ers are c""nly thr+n ut'

i!er +ater splashes !ilently n slps !er %ikes an% anks' 6'C"pletely De!astatin* •

5ri%*es an% ele!ate% cncrete structures are tpple% r %estrye%'  4u"erus utility psts. t+ers. an% "nu"ents are tilte%. tpple%. r rken'

1he *run% is %istrte% int un%ulatins'

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Lan%sli%es an% lique&actin +ith lateral sprea%in*s an% san%ils are +i%esprea%'

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$any trees are tpple%. rken. an% uprte%' Practically all "an0"a%e structures are %estrye%' $assi!e lan%sli%es an% lique&actin. lar*e0 scale susi%ence an% the upli&tin* & lan% &r"s an% "any *run% &issures are ser!e%'

Se+er pipes are ent. t+iste % r rken' •

Chan*es in ri!er curses an% %estructi!e seiches in lar*e lakes ccupatin'

Thomas Hanks

Hiroo Kanamori