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SCEC UGMS Committee Meeting

Conveners: Nico Luco and Tom Jordan
Dates: April 3, 2013 (05:00 - 17:00)
Location: SCEC Boardroom, USC, Los Angeles

BACKGROUND & OBJECTIVES: The UGMS is initiating a pilot study with the objective of using 3-D numerical simulations, together with traditional empirical approaches, to develop long period ground motion maps for Los Angeles. These maps eventually may be introduced in a future edition of the NEHRP seismic provisions. Consequently, the UGMS committee consists of both seismologists and structural engineers.

SUMMARY: The SCEC Committee for Utilization of Ground Motion Simulations (or "UGMS Committee") is tasked to develop long-period response spectral acceleration maps for Los Angeles region for inclusion in NEHRP and ASCE 7 Seismic Provisions and in Los Angeles City Building Code. The maps would be based on 3-D numerical ground-motion simulations, and ground motions computed using latest empirical ground-motion prediction equations from the PEER NGA project. This project is coordinated with (1) the SCEC Ground Motion Simulation Validation Technical Activity Group (GMSV-TAG), (2) other SCEC projects, such as CyberShake and UCERF, and (3) the USGS national seismic hazard mapping project.

Presentation slides may be downloaded by clicking the links following the title. PLEASE NOTE: Files are the author’s property. They may contain unpublished or preliminary information and should only be used while viewing the talk.

Wednesday, April 3, 2013

15:10 - 15:15 Call to Order & Introductions of attendees C.B. Crouse
15:15 - 15:20 Introductory remarks & project motivation (PDF, 51.7MB)  Tom Jordan
15:20 - 15:35 Pilot project objectives and technical approach C.B. Crouse
15:35 - 15:50 Questions & discussion All
15:50 - 16:00 Project schedule C.B. Crouse
16:00 - 16:30 Discussion of technical & non-technical issues All
16:30 - 16:45 Project organization & coordination C.B. Crouse / All
16:45 - 16:50 Action items & assignments All
16:50 - 16:55 New members & next meeting All
16:55 - 17:00 Closure & Adjourn Tom Jordan


UGMS Members Attending:
*Norm Abrahamson (PG&E)
Bob Bachman (R.E. Bachman)
Jacobo Bielak (Carnegie Mellon)
C.B. Crouse (AECOM)
*Art Frankel (USGS)
Rob Graves (USGS)
*Ronald Hamburger(Gumpertz & Heger)
Tom Jordan (USC)
Nico Luco (USGS)
Paul Somerville (AECOM)
UGMS Members Absent:
John Anderson (UNR)
Curt Haselton (CSUC)
John Hooper (MKA)
Charles Kircher (Kircher & Associates)
Farzad Naeim (Farzad Naeim, Inc.)
Jack Baker (Stanford)
*Carmien Galasso (AIR Worldwide)


Jared DeBock (UC Boulder)
Andreas Skarlatoudis (AECOM)

*Remote Participants