SSHAC Workshop 2C/3A – October 29-30, 2014


logo row


Next Generation Attenuation for Central and Eastern North America (NGA-East)

SSHAC Workshop 2C/3A – Proponent Discussions and Feedback Analyses

October 29-30, 2014


With funding from the US Nuclear Regulatory Commission (NRC), Electric Power Research Institute (EPRI) and US Department of Energy, the Pacific Earthquake Engineering Research Center (PEER) is coordinating a comprehensive multidisciplinary program to develop Next Generation Attenuation Relationships for the Central and Eastern North-America (NGA-East).

NGA-East is Ground Motion Characterization (GMC) project and follows the SSHAC (Senior Seismic Hazard Analysis Committee) Level 3 process. See the Open-File Report 2009-1093 (PDF file – 992 KB) for a summary of the SSHAC process.

PDFs of all presentations & videos

October 29, 2014 Wednesday

8:30-8:35 Introduction (Y. Bozorgnia)
NGA-East Approach and Updates on Input
8:35-8:50 NGA-East approaches for candidate models (C. Goulet)
8:50-9:00 Database: updates on products and metadata (C. Goulet)
9:00-9:35 Database: updates on Vs30 assignments
(G. Parker/J. Stewart)
9:35-9:55 General TI Team approach for median logic tree
(N. Abrahamson)
9:55-10:15 Point source stochastic approaches and selected attenuation (geometrical spreading and Q) model for CENA
(G. Atkinson)
10:15-10:30 Break
10:30-11:00 Kappa estimation from broadband inversion
(R. Darragh, W. Silva)
Median Proponent Models
11:00-11:40 Regional-adjustable generic GMPE based on stochastic point source simulations: application to NGA-East Database
(E. Yenier, G. Atkinson)
11:40-12:00 Discussions
12:00-13:00 Lunch
13:00-13:40 SMSIM models (D. Boore)
13:40-14:20 Darragh et al. stochastic models (R. Darragh, W. Silva)
14:20-15:00 Reference empirical ground motion model for ENA
(B. Hassani and G. Atkinson)
15:00-15:15 Break
15:15-15:55 GMPEs for ENA using the hybrid empirical method
(S. Pezeshk, A. Zandieh, K. Campbell, B. Tavakoli)
15:55-16:35 GMPE based on broadband synthetic seismograms
(A. Frankel)
16:35-17:05 Discussions
17:05-17:20 Summary of the day
17:20-17:30 Observers comments
17:30-18:00 PPRP, PM, JMC, TI team debriefing (closed doors meeting)

Wednesday, October 29, 2014 – Morning presentations

Wednesday, October 29, 2014 – Afternoon presentations

October 30, 2014 Thursday

8:00-8:05 Introduction (C. Goulet)
Median Proponent Models (continued)
8:05-8:45 Empirical ENA GMPE including intensity and ground motion data (C. Cramer, N. Al Noman)
8:45-9:25 Applying modular filter-based approach to CEUS GMPEs modeling (V. Graizer)
9:25-10:00 Summary of NGA-West2 models for hanging wall effects
(R. Youngs)
10:00-10:15 Break
10:15-10:35 PEER RVT approach: overview and RVT process, downsampling and smoothing (A. Kottke)
10:35-11:00 PEER RVT approach: simulations extrapolation of FAS for M and frequency (J. Bayless)
11:00-11:35 PEER RVT approach: empirical FAS model (J. Hollenback)
11:35-12:00 PEER RVT approach: duration model (N. Kuehn)
12:00-13:00 Lunch
Median Proponent Models – Comparisons
13:00-13:15 Proponent median models – comparison (N. Kuehn)
13:15-14:00 Application of Sammon’s maps to EPRI (2004-2006) Review Project and current proponent models (N. Kuehn)
14:00-15:00 Discussions
15:00-15:15 Break
Sigma Proponent Models
15:15-16:45 – General TI Team approach for sigma logic tree
– Simulations of PEER NGA-East approach to Sigma, data analysis results and model development
– Proponent sigma models (new and existing models)
(L. Al Atik)
16:45-17:15 Discussions
17:15-17:20 Summary of the day
17:20-17:25 Observers comments
17:25-17:30 Closing remarks (Y. Bozorgnia)
17:30-18:00 PPRP, PM, JMC, TI team debriefing (closed doors meeting)

Thursday, October 30, 2014 – Morning presentations

Thursday, October 30, 2014 – Afternoon presentations

This entry was posted in Past Events. Bookmark the permalink.