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Preliminary PEER-NGA Ground Motion Model. Brian Chiou and Robert Youngs PEER-NGA Workshop April 12, 2005. Data Selection. Excluded earthquakes Gorda plate earthquakes – oceanic crust Subduction zone earthquakes Poorly known overseas earthquakes Northwest China earthquakes - PowerPoint PPT Presentation
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Preliminary PEER-NGAGround Motion Model
Brian Chiou and Robert Youngs
PEER-NGA Workshop
April 12, 2005
Data Selection
• Excluded earthquakes– Gorda plate earthquakes – oceanic crust– Subduction zone earthquakes– Poorly known overseas earthquakes
• Northwest China earthquakes• Earthquakes recorded by SMART1 array
– Aftershocks (used only in site effects analysis)
• Excluded records – In basements– In large structures– On dam abutment
Modeling Concepts
• Source scaling– Magnitude (M, M2.5 )– No aspect ratio– Depth (depth to the top of rupture)– Style of faulting (SS+NM vs. RV)– Aftershocks not used
• Distance scaling– Closest distance to fault– Effect of Q for large distances– Break in slope at about 60 km– Hanging wall effects, function of fault dip angle
Modeling Concepts (cont’d)
• Site Effects– Function of VS30 (will examine effect using
categories)– Nonlinear site amplification (using empirical
data guided by modeling results)
– Depth to VS ~ 1 km/s
Model Form
• Reference site motion (Vs=1130m/sec)
• Site effects
i
TopOfFaultr
z
QFWRMfDFMfCy
),,,(),,()ln( regionpathtypesource1
jrSrefs yZVfyy ),,()ln()ln( 130site
yr ys
a
ln(yr)c
b
Amplification relative to Vs=1130 m/sec
)ln()ln(c
cybaAmpFactor r
s
V
s
Vc
eb
Vas
~
)1130/ln(3
2
1
0.1
0.3
0.5
1
3
5
10
0.01 0.03 0.1 0.3 1
llll
l TaiwanNon-California
lll Californiall Northridge
Loma Prietal ChiChi MS
lll l l l l ll llll lll lllll llll l ll l lll l lll l l l lll ll l l l l l l l l
llll l ll Taiwanll l l ll l llll l Non-California
lll ll lll ll lll ll ll l l ll lll ll l ll lll l Californial l ll lll ll l ll Northridge
lll ll l l Loma Prietallll l ll ChiChi MS
llllllllllllllllllll l lllll lllll ll lllllll lllllllllllllllllllllllllll llllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll llllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll lllll lllllllllllllllll l ll lllllllll l ll lll ll
ll l l ll llllllllllll llll lllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll l llllll l l l llllll lll ll llllllllllllll llllllllll llll lll lll l lll l lllll Taiwanl llll l l ll l l llll lll lll lll l ll l ll l l ll llllll l l l l ll l llll l lll ll l ll l l l l Non-Californialllllllllllllll llll lll ll lllll lllllllllllllllllllll lllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll llllllllllll lllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll lllllllllllllllllll llllllllll llllllllllllllllll l ll lll l llll l l l llllll l ll lll ll California
l ll l l llll ll l llllll llll lllllllllllllll llllll l lll ll llll llllllll l ll l l l l lll Northridgell ll ll ll llll l lll lll l l ll l llll l lll ll lll Loma Prieta
ll l l ll llllllllllll llll lllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll l llllll l l l llllll lll ll llllllllllllll llllllllll llll lll lll l lll l lllll ChiChi MSllllllllllllllllllllllllllllllllllllllllllllllllllllllllll lllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll ll llllllllllllll llll llllllllllllllllllllllll llllll l ll llll lll
ll l lll llllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll lllllllll lllllllllllllllllllllllll ll l ll lllllll lll l ll lllll lll l lllll l l l l Taiwanlllllllllllll l lll l llll l lll l lllllll l ll l l llllll l lll llll lll l l ll l l lll ll lll l l llll l l l ll ll l lllNon-California
llllllllllllllllllllllllllllllllllllllllllll l lllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll ll lllllllllllll lll llllllllll lllll lll llllll l ll ll l Californiall lllll l lllll ll ll lllll lll lllll lllll llll llllll l l l ll lll l llll l l l ll l l l l l l l Northridge
l ll ll l lll ll l llllll llll ll l l l l Loma Prietall l lll llllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll lllllllll lllllllllllllllllllllllll ll l ll lllllll lll l ll lllll lll l lllll l l l l ChiChi MS
ll l llll ll lll ll ll llll ll
l ll ll ll Taiwan
l l Non-California
ll l llll l lll ll California
l Northridge
llll l Loma Prieta
l ll ll ll ChiChi MS
Motion on Reference Vs30
Am
plif
ica
tion
Fa
cto
r
Sa [T=0.01sec]
Vs30 (m/sec)152270560
7501130
Comparison to Site Response Analysis with EPRI Soil Property Model
PGA
Site ResponseAnalysis (EPRI Soil) Regression
0.1
0.3
0.5
1
3
5
10
0.01 0.03 0.1 0.3 1
Motion on Reference Vs30
Am
plif
ica
tion
Fa
cto
r
Sa [T=0.01sec]
Vs30 (m/sec)270560
7501130
Comparison to Site Response Analysis with Peninsula Range Soil Property Model
PGA
Site ResponseAnalysis (Peninsula Rage Soil)
0.1
0.3
0.5
1
3
5
10
0.01 0.03 0.1 0.3 1
l lll
l TaiwanNon-California
l ll Californiall Northridge
Loma Prietal ChiChi MS
ll l lll l ll lll l lll ll ll l l ll lll ll l ll llllll l lll ll l l l
llll l ll Taiwanll l ll l llll l Non-California
ll l lll l lll ll ll l l ll lll ll l ll ll l Californial l ll lll ll l ll Northridge
lll ll l l Loma Prietallll l ll ChiChi MS
l lllllllllllllllllll lllll llllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll llll lllll lllllllllllllllllllllllllllllllllllllllllllllllllll lllll llllllllllllllllll l llllll ll
llll ll llllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll llllll l l l llllll lll ll llllllllllllll llllllllll llll lll lll l lll l lllll Taiwanl ll ll l llllll ll l ll l ll lll l l llll l l l l lllll l l l l lll l l l l l l llllll l l l Non-California
l llllllllllllllll lll llllllllllllllllllllllll lllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll lllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll lllllllllllllllllllll ll ll lllll llllll l l ll l ll l lllllll l l ll Californial ll l llll lllllllll l lll llllllllllllllll llllll l lll ll llll llllllll l ll l l l l lll Northridge
ll ll ll ll llll l lll lll l l ll l llll l lll ll lll Loma Prietallll ll llllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll llllll l l l llllll lll ll llllllllllllll llllllllll llll lll lll l lll l lllll ChiChi MS
llll lllll llllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll lllllllll lll ll llllll ll l l l lll
ll l lllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll lll lllllll lll l ll lllll lll l lllll l l l l Taiwanll l lllll l lllllllllllllll llll ll lllll lll lll lll ll ll l ll ll ll lll l l ll l lll ll llll l lll l ll l l l l l lll Non-California
llll lll lllllllllllllllllllllllllllllll lllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll lllllllllll lllll ll lllllll ll ll lllll ll l Californiall llllll lllllllll ll lllll lllll llllll llllll l llllll l ll lllllll l l l ll l l l l l l l Northridge
l ll ll l lll ll l llllll llll ll l l l l Loma Prietall l lllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll lll lllllll lll l ll lllll lll l lllll l l l l ChiChi MS
ll l llll ll ll l ll ll lll l
l ll ll ll Taiwan
l ll Non-California
ll l llll lll California
l Northridge
llll l Loma Prieta
l ll ll ll ChiChi MS
Motion on Reference Vs30
Am
plif
ica
tion
Fa
cto
r
Sa [T=1sec]
Vs30 (m/sec)152270560
7501130
Comparison to Site Response Analysis with EPRI Soil Property Model
T=1 Sec
Regression
Site ResponseAnalysis (EPRI)
0.1
0.3
0.5
1
3
5
10
0.01 0.03 0.1 0.3 1
Motion on Reference Vs30
Am
plif
ica
tion
Fa
cto
r
Sa [T=1sec]
Vs30 (m/sec)270560
7501130
Comparison to Site Response Analysis with Peninsula Range Soil Property Model
PGA
Soft Rock, Strike Slip and Reverse PGA
Strike SlipSoft Rock (Vs30 = 560)
0.001
0.01
0.1
1
10
1 10 100 1000
Closest Distance
PG
A (
g)
C&Y (2005)
M 5
M 6
M 7
M 8
S et.al. (1997)
M 5
M 6
M 7
M 8
ReverseSoft Rock (Vs30 = 560)
0.001
0.01
0.1
1
10
1 10 100 1000
Closest Distance
PG
A (
g)
C&Y (2005)
M 5
M 6
M 7
M 8
S et.al. (1997)
M 5
M 6
M 7
M 8
Strike Slip Reverse
Strike Slip Soft Rock and Soil PGA
Strike SlipSoft Rock (Vs30 = 560)
0.001
0.01
0.1
1
10
1 10 100 1000
Closest Distance
PG
A (
g)
C&Y (2005)
M 5
M 6
M 7
M 8
S et.al. (1997)
M 5
M 6
M 7
M 8
Strike SlipSoil (Vs30 = 280)
0.001
0.01
0.1
1
10
1 10 100 1000
Closest Distance
PG
A (
g)
C&Y (2005)
M 5
M 6
M 7
M 8
S et.al. (1997)
M 5
M 6
M 7
M 8
Strike Slip Soil PGA and 1 Hz PSA
Strike SlipSoil (Vs30 = 280)
0.001
0.01
0.1
1
10
1 10 100 1000
Closest Distance
1 H
z P
SA
(g
)
C&Y (2005)
M 5
M 6
M 7
M 8
S et.al. (1997)
M 5
M 6
M 7
M 8
Strike SlipSoil (Vs30 = 280)
0.001
0.01
0.1
1
10
1 10 100 1000
Closest Distance
PG
A (
g)
C&Y (2005)
M 5
M 6
M 7
M 8
S et.al. (1997)
M 5
M 6
M 7
M 8
PGA 1 Hz
Inter-event Residuals
PGA-2024Magnitude1-Hz PSA
-1
-0.8
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0.8
4 4.5 5 5.5 6 6.5 7 7.5 8
Magnitude
Res
idu
al
PGA
-1
-0.8
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0.8
4 4.5 5 5.5 6 6.5 7 7.5 8
Magnitude
Res
idu
al
Magnitude Distance
PGA Intra-event Residuals
PGA
-2.5
-2
-1.5
-1
-0.5
0
0.5
1
1.5
2
2.5
4 4.5 5 5.5 6 6.5 7 7.5 8 8.5
Magnitude
Res
idu
al
PGA
-2.5
-2
-1.5
-1
-0.5
0
0.5
1
1.5
2
2.5
0.1 1 10 100 1000
Magnitude
Res
idu
al
DistanceMagnitude
1 Hz PSA Intra-event Residuals
1-Hz PSA
-2.5
-2
-1.5
-1
-0.5
0
0.5
1
1.5
2
2.5
4 4.5 5 5.5 6 6.5 7 7.5 8 8.5
Magnitude
Res
idu
al
1-Hz PSA
-2.5
-2
-1.5
-1
-0.5
0
0.5
1
1.5
2
2.5
0.1 1 10 100 1000
Magnitude
Res
idu
al
DistanceMagnitude
-1.5
-1.0
-0.5
0.0
0.5
1.0
1.5
0 200 400 600 800 1000 1200
Z1
Res
idua
ls
T=3Sec
-1.0
-0.5
0.0
0.5
1.0
0.0 0.2 0.4 0.6 0.8 1.0
SSGA.SS
Re
sid
ua
ls
T=3Sec
Dip Slip Earthquakes, Records on HW/FW
-1.5
-1.0
-0.5
0.0
0.5
1.0
1.5
0 20 40 60 80
D
Re
sid
ua
ls
T=3Sec
-1.0
-0.5
0.0
0.5
1.0
-40 -20 0 20
ifelse(SD == "fw", - ClstDD, ClstDD)
Re
sid
ua
ls
T=3Sec
