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