NGA-Subduction Research Project
Session: Forthcoming Updates of the USGS NSHMs: Hawaii, Conterminous U.S. and Alaska
Type: Oral
Date: 4/28/2020
Time: 02:30 PM
Room: 230 + 235
Description:
Next generation ground motion models for subduction earthquakes (NGA-Sub), is a large multidisciplinary community-based research initiative to develop a comprehensive ground-motion database and multiple ground-motion models (GMMs) for subduction events. In the NGA-Sub project, we developed a relational database of ground motions recorded in worldwide subduction events. The database includes intensity measures computed from the processed recordings and supporting source, path and site metadata from Japan, Taiwan, the US Pacific Northwest (Cascadia), Alaska, Latin America (including Mexico, Central America and South America) and New Zealand. The NGA-Sub database includes over 1,500 events with moment magnitudes ranging from 4.0 to 9.1. The subduction events are classified as interface, intraslab, or outer-rise events. The NGA-Sub ground-motion database has over 210,000 individual ground-motion components. This is by far the largest ground-motion database that we have developed in any NGA project. Pseudo-spectral acceleration for periods from 0.01 to 10 sec have been included in the database. Multiple ground-motion models (GMMs) have been developed using the ground-motion database and supporting ground-motion simulations. The scope of the NGA-Sub GMMs is to develop models for horizontal components of ground motion for PGA, PGV and 5% damped pseudo-acceleration response spectra. At the time of writing this abstract, two global and regionalized GMMs and two Japan-specific GMMs have been developed, and documentation reports are being finalized. An overview of the NGA-Sub project and main characteristics of the GMMs are presented in this presentation.
Presenting Author: Yousef Bozorgnia
Authors
Yousef Bozorgnia yousef.bozorgnia@ucla.edu University of California, Los Angeles, Los Angeles, California, United States Presenting Author
Corresponding Author
|
Norman A Abrahamson abrahamson@berkeley.edu University of California, Berkeley, Berkeley, California, United States |
Sean K Ahdi sahdi@ucla.edu Exponent, University of California, Los Angeles, Los Angeles, California, United States |
Tim Ancheta timothydancheta@gmail.com Risk Management Solutions, Inc., Oakland, California, United States |
Ralph J Archuleta ralph.archuleta@ucsb.edu University of California, Santa Barbara, Santa Barbara, California, United States |
Gail Atkinson gmatkinson@aol.com Western University, London, Ontario, Canada |
Dave Boore dboore@yahoo.com Boore Consulting, Las Altos, California, United States |
Kenneth W Campbell kcampbell@corelogic.com CoreLogic, Oakland, California, United States |
Brian Chiou Brian_Chiou@comcast.net Caltrans, Sacramento, California, United States |
Victor Contreras vcontreras@ucla.edu University of California, Los Angeles, Los Angeles, California, United States |
Robert Darragh pacificengineering@juno.com Pacific Engineering & Analysis, El Cerrito, California, United States |
Nicholas Gregor nick@ngregor.com Nicholas Gregor Consulting, Oakland, California, United States |
Zeynep Gulerce zyilmaz@metu.edu.tr MTU, Ankara, , Türkiye |
IM Idriss imidriss@aol.com University of California, Davis, Davis, California, United States |
Ronnie Kamai rkamai@bgu.ac.il BGU, BGU, , Israel |
Tadahiro Kishida tadahiro.kishida@ku.ac.ae Khalifeh University, Abu Dabi, , United Arab Emirates |
Nicolas M Kuehn kuehn@g.ucla.edu University of California, Los Angeles, Los Angales, California, United States |
Harold Magistrale Harold.Magistrale@fmglobal.com FM Global, Boston, Massachusetts, United States |
Silvia Mazzoni smazzoni@ucla.edu University of California, Los Angeles, Los Angeles, California, United States |
Grace A Parker gparker@usgs.gov U.S. Geological Survey, Menlo Park, California, United States |
Sanaz Rezaeian srezaeian@usgs.gov U.S. Geological Survey, Golden, Colorado, United States |
Hongjun SI shj@eri.u-tokyo.ac.jp University of Tokyo, Tokyo, , Japan |
Jonathan P Stewart jstewart@seas.ucla.edu University of California, Los Angeles, Los Angeles, California, United States |
Melanie Walling mwalling@geoengineers.com Walling Consulting, Oakland, California, United States |
Kathryn E Wooddell kxwl@pge.com University of California, Berkeley, Berkeley, California, United States |
Robert Youngs bob.youngs@woodplc.com John Wood Group PLC, Oakland, California, United States |
NGA-Subduction Research Project
Category
Forthcoming Updates of the USGS NSHMs: Hawaii, Conterminous U.S. and Alaska