Comparison of NGA-Sub Developed Ground Motion Models for Subduction Earthquakes
Date: 4/24/2019
Time: 02:15 PM
Room: Pine
The Next Generation Attenuation for Subduction Earthquakes (NGA-Sub) research program is the latest research initiative in the NGA series to develop a database and ground-motion models (GMMs) for events in various tectonic settings. Given the large empirical database of interface and intraslab earthquake recordings from different global subduction zone regions, multiple ground motion models have been generated as part of this community based approach. During the development process, comparisons between these interim models are analyzed and used along with the numerous technical discussions for the refinement of the models.
Multiple GMMs have been developed based on the database. A summary will be provided of the different parameterizations of these multiple models and as well the regionalization contained within each model. Comparisons of median ground motion plots (e.g., attenuation curves and spectra) will be presented along with the associated uncertainty models. As part of this comparison, these new models will also be compared to previous GMMs including the recent BC Hydro update model. A focus will be placed on the expected controlling subduction zone earthquakes for sites located in the Pacific Northwest and British Columbia region for these comparisons. Additionally, comparison will also be provided for the global version of these GMMs.
Presenting Author: Nick Gregor
Authors
Nick Gregor nick@ngregor.com Consultant, Oakland, California, United States Presenting Author
Corresponding Author
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Norman Abrahamson abrahamson@berkeley.edu University of California, Berkeley, Berkeley, California, United States |
Linda Al Atik linda.alatik@gmail.com Consultant, San Francisco, California, United States |
Gail M Atkinson gmatkinson@aol.com Western University, London, Ontario, Canada |
David M Boore dboore@yahoo.com Geophysicist, Los Altos, California, United States |
Yousef Bozorgnia yousef.bozorgnia@ucla.edu University of California, Los Angeles, Los Angeles, California, United States |
Kenneth W Campbell kcampbell@corelogic.com CoreLogic, Inc., Oakland, California, United States |
Brian S J Chiou brian.chiou@dot.ca.gov California Department of Transportation, Sacramento, California, United States |
Zeynep Gulerce zyilmaz@metu.edu.tr Middle East Technical University, Ankara, , Türkiye |
Behzad Hassani Behzad.Hassani@bchydro.com BC Hydro, Burnaby, British Columbia, Canada |
Tadahiro Kishida kishidapple@gmail.com Khalifa University, Abu Dhabi, , United Arab Emirates |
Nicolas M Kuehn kuehn@g.ucla.edu University of California, Los Angeles, Los Angeles, California, United States |
Saburoh Midorikawa smidorik@enveng.titech.ac.jp Tokyo Institute of Technology, Tokyo, , Japan |
Silvia Mazzoni mazzoni@berkeley.edu University of California, Los Angeles, Los Angeles, California, United States |
Grace A Parker graceaparker@gmail.com University of California, Los Angeles, Los Angeles, California, United States |
Hongjun Si shj@seismo-r.com Seismological Research Institute Inc., Tokyo, , Japan |
Jonathan P Stewart jstewart@seas.ucla.edu University of California, Los Angeles, Los Angeles, California, United States |
Robert R Youngs bob.youngs@woodplc.com John Wood Group PLC, Oakland, California, United States |
Comparison of NGA-Sub Developed Ground Motion Models for Subduction Earthquakes
Category
Earthquake Ground Motions and Structural Response in Subduction Zones: A Focus on Cascadia