1. Data Set Size

2. Key Data Set Issues A&S C&B C&Y B&A Idriss Chi-Chi MS yes no
Chi-Chi AS
Yes
For soil amp
Koceali & Duzce
Ducze Lamont Sta
Dist Range
0-130
0-200
0-300

3. Model driven non-linear
Site Models
A&S
C&B
C&Y
B&A
Idriss
Vs30
Yes
yes
Soil category No no
Geomatrix A, B, C, D
Z1.0 or Z1.5
Yes, Z1.0
Yes, Z1.5
Z1.0
Will evaluate ?
Empirical non-linear
Model driven non-linear
For cutoff vs only
basin

4. Source Parameter Models
A&S
C&B
C&Y
B&A
Idriss
Oversaturation with mag
Through correlation w/AR no
No(M1)
Yes (M2)
Aspect ratio
Yes
Style-of-faulting
yes
planned
Dip
Yes, in HW
In HW ?
Hypo depth
HW/FW
Yes rjb
Planned
Yes using rjb
Static stress drop
Buried/surface No
Depth to top of rupture

5. Issues from Dec 2004 Oversaturation Use of Aspect ratio
Is it real?
Is it due to the aspect ratio, or the magnitude?
Use of Aspect ratio
Are aspect ratios used in NGA consistent with aspect ratios currently used in hazard analyses?
Correlation with style-of-faulting
Dependence on dip
Is this dip effects or a regional effect?

6. A&S changes Use new non-linear soil functional form Added HW factor
Addressed cross over level
Added HW factor
Function of dip and Rjb

7. Site Amplification for PGA (EPRI model)

8. PGA

9. T=1

10. T=3

11. HW model

12. Site Amplification model

13. Non-linear soil term: b

14. Non-linear soil term: vref

15. PGA, SS, Vs=600

16. Example of Event Terms

17. T=1, SS, Vs=600

18. T=3 , SS, Vs=600

19. M6, Rrup=10km, SS

20. M7, Rrup=10km, SS

21. M8, Rrup=10km, SS