cena empirical linear site amp updates - uclageo.com empirical-082316.pdf · 2016-11-11 · updated...

CENAEmpiricalLinearSiteAmpUpdates

GraceParker,JonathanStewartAugust23,2016

Outline

•  GulfCoastGMMadjustmentfactors•  UpdatedVS30

•  UpdatedResults,withinfluenceof:– GulfCoast– PIE

•  Glaciatedvs.Non-glaciatedProfiles

NGA-EastGCAdjustment

•  GulfCoastadjustments– Forwhensource,pathandsiteareallinGC– SRllexcludingrecordingswherepathcrossesinto/outofGC

•  TwoModels– PEEREmpirical– DASGSimulaRonBased

PEEREmpirical

•  BasedonresidualsbetweenNGA-EastGMMsandGulfCoastdata

(PEERReport2015/08)

GulfCoastData

(PEERReport2015/08)

TrendsinTotalResidual

1.  Slope~0forRRUP≤100km.

2.  Beyond100km,slopeislinearandnegaRve

(PEERReport2015/08)

PEERModel

€

PSAGCPSAMC

f( ) =c0 RRUP <100kmc0 +c'7 RRUP −100( ) RRUP ≥100km

⎧ ⎨ ⎩ ⎪

Coefficientssetbymixed-effectsregression

(PEERReport2015/08)

DASG15Model

•  PSsimulaRonwithsimulaRoninputs(κ,Q0,stressdrop)invertedforusingGCregiondata

•  SimulaRonsusedtoupdateDASGNGA-EastGMM

•  RaRoofpredictedGMIMsfromthetwoGMMsistheadjustmentfactor

•  Givenasatable

PSARaRoModel

(PEERReport2015/08)

ComparisonsofPEERandDASGAdjustments

(PEERReport2015/08)

UpdatetoSiteAmpModelData

•  AverageofPEERandDASGadjustmentstaken•  AppliedtorecordswithsourceandsiteinGC•  RecordswitheithersourceonlyorsiteonlyinGCexcluded

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

UpdatedVS30

•  Previously445flaggedstaRonshadbeenupdated

•  ThankstoCaioVilarnowallcode3,4,and5staRonshaveupdatedVS30values

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

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

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

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

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

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

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

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

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

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

GlaciatedVs.Non-GlaciatedProfiles

•  GroupedprofilesaccordingtoglaciaRonandsurfacegeology(usingproxygroups)

Non-Glaciated

Glaciated

FutureWork

•  Finalizeglaciatedmodelforcomparison•  LookatinfluenceofFpeak

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@onalAtlasSmall-ScaleCollec@on.Availableonlineat: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.

AmplificaRonModelComparisonsT=0.2s

AmplificaRonModelComparisonsT=0.2s