Next Generation Attenuation for Central and Eastern North America (NGA-East)
SSHAC Workshop 3B – Proponent Discussions and Feedback Analyses
March 4-5, 2015
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
Presentations usually involve numerous researchers and contributors. Only the name of the presenter is listed below.
March 4, 2015 Wednesday
| 08:00-08:05 | Opening remarks (Y. Bozorgnia) |
| 08:05-08:30 | Introduction, status of project, expected outcomes from Workshop 3B (C. Goulet) |
| 08:30-10:00 | Median ground motions: overview of GMMs/GMPEs considered and discussion of model evaluation (R. Graves) |
| 10:00-10:15 | Break |
| 10:15-11:45 | Median ground motions: methodology for using high-dimension visualization of ground motion space (G. Atkinson) |
| 11:45-12:15 | Median ground motions: populating the ground motion space for NGA-East & sensitivity analyses (N. Kuehn) |
| 12:15-13:15 | Lunch |
| 13:15-14:15 | Median ground motions: epistemic uncertainty and integration, re-discretizing the ground motion space for NGA-East (N. Kuehn) |
| 14:15-14:30 | Break |
| 14:30-14:40 | Preview of weight assignment approaches (N. Kuehn) |
| 14:40-15:05 | Discussions |
| 15:05-15:20 | Summary of the day (TI team) |
| 15:20-15:30 | Observers comments |
| 15:30-16:00 | PPRP, PM, JMC, TI team debriefing (closed doors meeting) |
March 5, 2015 Thursday
| 08:30-08:35 | Introduction (C. Goulet) |
| 08:35-09:35 | Median ground motions: assigning weights to median models for NGA-East (N. Kuehn) |
| 09:35-10:30 | Standard deviation of ground motions: available and new models (L. Al Atik) |
| 10:30-10:45 | Break |
| 10:45-11:15 | Standard deviation of ground motions: evaluation and integration (L. Al Atik, continued from above) |
| 11:15-12:00 | Discussion |
| 12:00-13:00 | Lunch |
| 13:00-14:15 | Hazard feedback analyses: 1) sites and source characteristics, 2) results (R. Youngs) |
| 14:15-14:50 | Proposed logic trees and approach to finalize the model (TI Team) |
| 14:50-15:15 | Discussions |
| 15:15-15:30 | Summary of the day (TI team) |
| 15:30-15:40 | Observers comments |
| 15:40-15:45 | Closing remarks (Y. Bozorgnia) |
| 15:45-16:00 | Closing |
| 16:00-16:15 | Private PPRP meeting |
| 16:15-16:45 | PPRP, PM, JMC, TI Team debriefing (closed doors meeting) |