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SCEC Community Workshop: SCEC Ground Motion Simulation Validation Workshop

Convener: Nico Luco, Paul Somerville
Dates: January 10, 2011 (10am-5:30pm)
Location: SCEC Boardroom, University of Southern California

SUMMARY: SCEC is establishing a Technical Activity Group (TAG) focused on Ground Motion Simulation Validation (GMSV) in order to develop and implement testing/rating methodologies via collaboration between ground motion modelers and engineering users. The main purpose of the planning workshop will be to enumerate and prioritize work that should be conducted within the GSMV TAG. SCEC will only be able to fund relatively few projects per year that contribute to the GMSV TAG, so prioritization is particularly important. General ideas for work that could be conducted within the GMSV TAG include:

  • Research on important ground motion or structural (e.g., building) response parameters and statistics that should be used in comparing simulated versus recorded seismograms.
  • Comparisons of simulated ground motions with empirical ground motion prediction equations, in terms of both median predictions and the variability about them. Note that simulations for the CyberShake Project aim to accurately represent both the median and variability of ground motions.
  • Compilation of representative nonlinear structural models of different types for which the responses to simulated versus recorded seismograms can be compared.
  • Comprehensive analysis and documentation of the sensitivity of simulated ground motions to model input parameters and their interactions and uncertainties.
  • Development of testing and/or rating metrics for simulated ground motions, perhaps considering testing concepts from the Collaboratory for the Study of Earthquake Predictability.
  • Implementation of testing/rating methodologies into the SCEC Broadband Strong Motion Simulation Platform.



10:00 – 10:05 Welcome and GMSV Technical Activity Group Background T. Jordan
10:05 – 10:10 Overview of Agenda N. Luco
  What Ground Motion Simulations/Models to Validate?  
10:15 – 10:30 SCEC Broadband Simulation Platform and Cybershake R. Graves
10:30 – 10:45 Puente Hills, ShakeOut, 1906, and Hayward Simulations B. Aagaard
10:45 – 11:00 Summary of Other GM Simulation Models P. Somerville / Y. Zeng
11:00 – 11:25 Discussion All
  What Validation Methodologies? What Engineering Applications?  
11:30 – 11:45 Goodness-of-Fit Criteria K. Olsen
11:45 – 12:00 Elastic and Inelastic Response Spectra Properties J. Baker
12:00 – 12:15 Spatial Correlation of Spectral Accelerations P. Bazzurro / N. Jayaram
12:15 – 13:15 Lunch  
13:15 – 13:30 Attenuation of Spectral Accelerations J. Stewart
13:30 – 13:45 Tall Building Response N. Jayaram
13:45 – 14:00 Summary of Other Validation Methodologies/Applications N. Luco
14:00 – 14:25 Discussion All
  Initial Priorities for GMSV Technical Activity Group (TAG)?  
14:30 – 14:50 What Engineering Applications? All
14:50 – 15:10 What Validation Methodologies? All
15:10 – 15:30 What Ground Motion Simulations/Models to Validate? All
15:30 – 15:50 Break  
15:50 – 16:10 Archiving/Distribution of GM Simulations? All
16:10 – 16:30 Implementation of Validation Methodologies? All
16:30 – 16:50 TAG Organization/Approach? All
16:50 – 17:10 Summary of Priorities P. Somerville / N. Luco
17:30 Adjourn