Difference between revisions of "Moved:SCEC UGMS Committee Meeting"

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Revision as of 19:22, 2 July 2014

The SCEC Committee on UGMS (see membership and charter below) will meet on May 12th from 10 a.m. to around 5:30 p.m at USC/SCEC in Los Angeles, CA. At the meeting, Tom Jordan (USC/SCEC) and his team will present details of the CyberShake platform, which has completed long period ground-motion simulations for the Los Angeles region. They will present how model uncertainties have been addressed so far and will show results of probabilistic and deterministic calculations. At the end of these presentations the committee will decide the next steps toward the goal of preparing long period ground motion maps for the Los Angeles region, a task that will be performed in collaboration with the SCEC GMSV TAG committee chaired by Nico Luco (USGS).

SCEC Committee on Utilization of Ground Motion Simulations (UGMS):

Norm Abrahamson (PG&E/UCB)
John Anderson (UNR)
Bob Bachman (R.E. Bachman Consulting Structural Engineers)
Jack Baker (Stanford)
Jacobo Bielak (CMU)
C. B. Crouse (URS, chair)
Art Frankel (USGS)
Rob Graves (USGS)
Ron Hamburger (SGH)
Curt Haselton (CSUC)
John Hooper (MKA)
Charlie Kircher (Kircher & Associates)
Nico Luco (USGS)
Farzad Naeim (J.A. Martin & Associates)
Paul Somerville (URS)

Committee Goal/Charter: 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. The project would be 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.

May 12, 2014 Agenda

10:00 Welcome and introductions C.B. Crouse
10:10 SCEC UGMS Committee overview (pptx) C.B. Crouse
10:30 Overview of CyberShake and the SCEC ground motion simulation program (pdf) T. Jordan
11:30 Group Discussion All
12:00 Lunch
13:00 Development of the SCEC Community Velocity Models (pdf) T. Jordan
13:30 Comparisons among CyberShake models and with NGA models (pdf) T. Jordan
14:00 Group Discussion All
14:30 Break
15:00 Plans for future CyberShake development (pdf) T. Jordan
15:30 SCEC UGMS Committee Executive Session
17:30 Adjourn

Data of Interest

CyberShake Hazard Maps

Map of CyberShake sites. Purple sites are along a 10 km x 10 km mesh, orange sites are near SCSN broadband stations, and yellow sites are locations of interest.
Site Name NGA-1 3 second curve NGA-1 5 second curve NGA-2 3 second curve NGA-2 5 second curve
LADT LADT 3 sec LADT 5 sec LADT 3 sec LADT 5 sec
CCP CCP 3 sec CCP 5 sec CCP 3 sec CCP 5 sec
P22 P22 3 sec P22 5 sec P22 3 sec P22 5 sec
s429 s429 3 sec s429 5 sec s429 3 sec s429 5 sec
STG STG 3 sec STG 5 sec STG 3 sec STG 5 sec
s684 s684 3 sec s684 5 sec s684 3 sec s684 5 sec
s688 s688 3 sec s688 5 sec s688 3 sec s688 5 sec
PAS PAS 3 sec PAS 5 sec PAS 3 sec PAS 5 sec
s758 s758 3 sec s758 5 sec s758 3 sec s758 5 sec
SBSM SBSM 3 sec SBSM 5 sec SBSM 3 sec SBSM 5 sec
STNI STNI 3 sec STNI 5 sec STNI 3 sec STNI 5 sec
WNGC WNGC 3 sec WNGC 5 sec WNGC 3 sec WNGC 5 sec
s355 s355 3 sec s355 5 sec s355 3 sec s355 5 sec

Rupture Generator comparisons

Hypocenter distribution for source 244, rupture 5 (M6.55, Puente Hills)
Slips for a single realization of source 244, rupture 5 (M6.55, Puente Hills)
Hypocenter distribution for source 128, rupture 1296 (M8.15, Southern San Andreas)
Slips for a single realization of source 128, rupture 1296 (M8.15, Southern San Andreas)