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Development of new ground-motion maps for Los Angeles based on 3-D numerical simulations and NGA West2 equations

C.B. Crouse, & Thomas H. Jordan

Published October 6, 2016, SCEC Contribution #7298

The Utilization of Ground Motion Simulation (UGMS) committee of the Southern California Earthquake Center (SCEC) is currently developing risk-targeted Maximum Considered Earthquake (MCER) maps for possible inclusion as an amendment to the ASCE 7-16 edition of the Los Angeles City Building Code (LACBC). These maps are scheduled for release in 2017. The maps will be based on 3-D numerical ground-motion simulations and ground motions computed using the empirical ground-motion prediction equations (GMPEs) from the Pacific Earthquake Engineering Research (PEER) Center NGA West2 project. A web-based lookup tool, similar to the USGS lookup tool, will be posted so users can obtain the MCER response spectrum for a specified latitude and longitude and for a specified site class or 30-m average shear-wave velocity, Vs30. The acceleration ordinates of the MCER response spectrum will be provided at multiple natural periods in the 0 to 10-sec band; values of SDS and SD1, per the requirements in Section 21.4 of ASCE 7-16, will also be listed.

Citation
Crouse, C., & Jordan, T. H. (2016, 10). Development of new ground-motion maps for Los Angeles based on 3-D numerical simulations and NGA West2 equations. Oral Presentation at 2016 California Strong Motion Instrumentation Program Annual Seminar.