NGA-West2 Research Project

Author:

Bozorgnia Yousef1,Abrahamson Norman A.2,Atik Linda Al3,Ancheta Timothy D.4,Atkinson Gail M.5,Baker Jack W.6,Baltay Annemarie7,Boore David M.7,Campbell Kenneth W.8,Chiou Brian S.-J.9,Darragh Robert10,Day Steve11,Donahue Jennifer12,Graves Robert W.13,Gregor Nick14,Hanks Thomas7,Idriss I. M.15,Kamai Ronnie1,Kishida Tadahiro1,Kottke Albert14,Mahin Stephen A.1,Rezaeian Sanaz16,Rowshandel Badie17,Seyhan Emel18,Shahi Shrey6,Shantz Tom9,Silva Walter10,Spudich Paul7,Stewart Jonathan P.18,Watson-Lamprey Jennie19,Wooddell Kathryn2,Youngs Robert20

Affiliation:

1. PEER, University of California, Berkeley, CA;

2. Pacific Gas & Electric Company, San Francisco, CA

3. Linda Alatik Consulting, San Francisco, CA

4. Risk Management Solutions, Newark, CA

5. University of Western Ontario, Canada

6. Stanford University, Stanford, CA

7. United States Geological Survey, Menlo Park, CA

8. Core Logic EQECAT, Oakland, CA

9. California Department of Transportation, Sacramento, CA

10. Pacific Engineering and Analysis, El Cerrito, CA

11. San Diego State University, San Diego, CA

12. Geosyntec Consultants, San Francisco, CA

13. United States Geological Survey, Pasadena, CA

14. Bechtel Corporation, San Francisco, CA

15. University of California, Davis, CA

16. United States Geological Survey, Golden, CO

17. California Earthquake Authority, Sacramento, CA

18. University of California, Los Angeles, CA

19. Watson-Lamprey Consulting, Berkeley, CA

20. AMEC E&I, Oakland, CA

Abstract

The NGA-West2 project is a large multidisciplinary, multi-year research program on the Next Generation Attenuation (NGA) models for shallow crustal earthquakes in active tectonic regions. The research project has been coordinated by the Pacific Earthquake Engineering Research Center (PEER), with extensive technical interactions among many individuals and organizations. NGA-West2 addresses several key issues in ground-motion seismic hazard, including updating the NGA database for a magnitude range of 3.0–7.9; updating NGA ground-motion prediction equations (GMPEs) for the “average” horizontal component; scaling response spectra for damping values other than 5%; quantifying the effects of directivity and directionality for horizontal ground motion; resolving discrepancies between the NGA and the National Earthquake Hazards Reduction Program (NEHRP) site amplification factors; analysis of epistemic uncertainty for NGA GMPEs; and developing GMPEs for vertical ground motion. This paper presents an overview of the NGA-West2 research program and its subprojects.

Publisher

SAGE Publications

Subject

Geophysics,Geotechnical Engineering and Engineering Geology

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