Ground Motion Amplitude Variations in the Los Angeles Region Measured by the Community Seismic Network

Robert W. Clayton, Robert Sanchez, Julian Bunn, & Richard Guy

Submitted August 15, 2016, SCEC Contribution #6719, 2016 SCEC Annual Meeting Poster #209

We show variations in ground motion amplitude in the Pasadena and northern Los Angeles regions due to the Borrego-Springs earthquake (2016/06/10, M5.2) and other earthquakes in 2015-2016. The measurements are from the Community Seismic Network stations, which are deployed in private homes and businesses as well as 100 LAUSD (Los Angeles Unified School District) schools. The results show the enhanced shaking levels due to the Los Angeles Basin and other smaller structures. Time snapshots of the motions from Borrego-Springs shows that the energy in downtown LA arrives both through the Los Angeles Basin, and the San Gabriel/San Bernardino Basins at approximately the same time, which accounts for some of the amplification.

Key Words
ground amplification, Community Seismic Network, microzonation

Citation
Clayton, R. W., Sanchez, R., Bunn, J., & Guy, R. (2016, 08). Ground Motion Amplitude Variations in the Los Angeles Region Measured by the Community Seismic Network. Poster Presentation at 2016 SCEC Annual Meeting.


Related Projects & Working Groups
Seismology