cena empirical linear site amp updates - uclageo.com empirical-082316.pdf · 2016-11-11 · updated...
TRANSCRIPT
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CENAEmpiricalLinearSiteAmpUpdates
GraceParker,JonathanStewartAugust23,2016
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Outline
• GulfCoastGMMadjustmentfactors• UpdatedVS30
• UpdatedResults,withinfluenceof:– GulfCoast– PIE
• Glaciatedvs.Non-glaciatedProfiles
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NGA-EastGCAdjustment
• GulfCoastadjustments– Forwhensource,pathandsiteareallinGC– SRllexcludingrecordingswherepathcrossesinto/outofGC
• TwoModels– PEEREmpirical– DASGSimulaRonBased
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PEEREmpirical
• BasedonresidualsbetweenNGA-EastGMMsandGulfCoastdata
(PEERReport2015/08)
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GulfCoastData
(PEERReport2015/08)
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TrendsinTotalResidual
1. Slope~0forRRUP≤100km.
2. Beyond100km,slopeislinearandnegaRve
(PEERReport2015/08)
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PEERModel
€
PSAGCPSAMC
f( ) =c0 RRUP <100kmc0 +c'7 RRUP −100( ) RRUP ≥100km
⎧ ⎨ ⎩ ⎪
Coefficientssetbymixed-effectsregression
(PEERReport2015/08)
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DASG15Model
• PSsimulaRonwithsimulaRoninputs(κ,Q0,stressdrop)invertedforusingGCregiondata
• SimulaRonsusedtoupdateDASGNGA-EastGMM
• RaRoofpredictedGMIMsfromthetwoGMMsistheadjustmentfactor
• Givenasatable
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PSARaRoModel
(PEERReport2015/08)
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ComparisonsofPEERandDASGAdjustments
(PEERReport2015/08)
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UpdatetoSiteAmpModelData
• AverageofPEERandDASGadjustmentstaken• AppliedtorecordswithsourceandsiteinGC• RecordswitheithersourceonlyorsiteonlyinGCexcluded
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EventsandRecords
0.01 0.1 1 100
10
20
30
40
50
60
70
Period (s)
# Ev
ents
0.01 0.1 1 10600
800
1000
1200
1400
1600
1800
2000
2200
2400
2600
Period (s)
# R
ecor
ding
s
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UpdatedVS30
• Previously445flaggedstaRonshadbeenupdated
• ThankstoCaioVilarnowallcode3,4,and5staRonshaveupdatedVS30values
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ModelBeforeUpdates
100 1000−4
−3
−2
−1
0
1
2
3
4
VS30 (m/s)
W/I −
even
t roc
k re
sidu
als
T = 0.2sGlaciated
100 1000−4
−3
−2
−1
0
1
2
3
4
VS30 (m/s)
W/I −
even
t roc
k re
sidu
als
T = 0.2sNon−Glaciated
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UpdatedResults
100 1000−4
−3
−2
−1
0
1
2
3
4
VS30 (m/s)
LN A
mpl
ifica
tion
T = 0.2sGlaciated
100 1000−4
−3
−2
−1
0
1
2
3
4
VS30 (m/s)
LN A
mpl
ifica
tion
T = 0.2sNon−Glaciated
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ModelBeforeUpdates
100 1000−4
−3
−2
−1
0
1
2
3
4
VS30 (m/s)
LN A
mpl
ifica
tion
T = 1sGlaciated
100 1000−4
−3
−2
−1
0
1
2
3
4
VS30 (m/s)
LN A
mpl
ifica
tion
T = 1sNon−Glaciated
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UpdatedResults
100 1000−4
−3
−2
−1
0
1
2
3
4
VS30 (m/s)
LN A
mpl
ifica
tion
T = 1sGlaciated
100 1000−4
−3
−2
−1
0
1
2
3
4
VS30 (m/s)
LN A
mpl
ifica
tion
T = 1sNon−Glaciated
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UpdatedResiduals
100 1000−2
0
2
4
R
Glaciated
T = 0.2s
100 1000−4
−2
0
2
4
VS30 (m/s)
R
Non−Glaciated
T = 0.2s
100 1000−2
−1
0
1
2
3
R
Glaciated
T = 1s
100 1000−4
−2
0
2
4
VS30 (m/s)
RNon−Glaciated
T = 1s
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Results–GulfCoast
100 1000−4
−3
−2
−1
0
1
2
3
4
VS30 (m/s)
LN A
mpl
ifica
tion
T = 0.2sNon−Glaciated
100 1000−2
0
2
4
R
Glaciated
T = 0.2s
100 1000−4
−2
0
2
4
VS30 (m/s)
RNon−Glaciated
T = 0.2s
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Results–GulfCoast
100 1000−4
−3
−2
−1
0
1
2
3
4
VS30 (m/s)
LN A
mpl
ifica
tion
T = 1sNon−Glaciated
100 1000−2
−1
0
1
2
3
R
Glaciated
T = 1s
100 1000−4
−2
0
2
4
VS30 (m/s)
RNon−Glaciated
T = 1s
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Results-PIE
100 1000−4
−3
−2
−1
0
1
2
3
4
VS30 (m/s)
LN A
mpl
ifica
tion
T = 0.2sGlaciated
100 1000−4
−3
−2
−1
0
1
2
3
4
VS30 (m/s)
LN A
mpl
ifica
tion
T = 0.2sNon−Glaciated
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Results-PIE
100 1000−4
−3
−2
−1
0
1
2
3
4
VS30 (m/s)
LN A
mpl
ifica
tion
T = 1sGlaciated
100 1000−4
−3
−2
−1
0
1
2
3
4
VS30 (m/s)
LN A
mpl
ifica
tion
T = 1sNon−Glaciated
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Results-PIE
100 1000−2
0
2
4
R
Glaciated
T = 0.2s
100 1000−4
−2
0
2
4
VS30 (m/s)
R
Non−Glaciated
T = 0.2s
100 1000−2
−1
0
1
2
3
R
Glaciated
T = 1s
100 1000−4
−2
0
2
4
VS30 (m/s)
RNon−Glaciated
T = 1s
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GlaciatedVs.Non-GlaciatedProfiles
• GroupedprofilesaccordingtoglaciaRonandsurfacegeology(usingproxygroups)
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Non-Glaciated
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Glaciated
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FutureWork
• Finalizeglaciatedmodelforcomparison• LookatinfluenceofFpeak
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References• Harmon,J.A.,Y.M.A.Hashash,J.P.Stewart,E.M.Rathje,K.W.Campbell,W.Silva,
G.A.Parker,andB.Xu(2016).ASiteAmplificaRonModelforCentralandEasternNorthAmericafromLinearElasRcandNonlinearSite-ResponseSimulaRons[abstract].In:ProceedingsoftheSeismologicalSocietyofAmericaAnnualMeeRng;2016Apr20-22;RenoNV.California(CA):SSA;Abstract16-537
• Hassani,B.,andAtkinson,G.M.(2015).Referencedempiricalground-moRonmodelforeasternNorthAmerica.SeismologicalResearchLe=ers,86(2A),477-491.
• Reed,J.C.,andC.A.Bush(2005).GeneralizedgeologicmapoftheUnitedStates,PuertoRico,andtheU.S.VirginIslands.USGSNa@[email protected]:hpp://pubs.usgs.gov/atlas/geologic/.
• PEER(2015).NGA-East:AdjustmentstoMedianGround-MoRonModelsforCentralandEasternNorthAmerica.PEERreport2015/08.
• Seyhan,E.,andStewart,J.P.(2014).Semi-empiricalnonlinearsiteamplificaRonfromNGA-West2dataandsimulaRons.EarthquakeSpectra,30(3),1241-1256.
• Yenier,E,andG.M.Atkinson(2015).Regionallyadjustablegenericground-moRonpredicRonequaRonbasedonequivalentpoint-sourcesimulaRons:ApplicaRontocentralandeasternNorthAmerica.Bulle@noftheSeismologicalSocietyofAmerica,105(4),1989-2009.
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AmplificaRonModelComparisonsT=0.2s
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AmplificaRonModelComparisonsT=0.2s