Structure of the Northern Los Angeles Basins Revealed in Teleseismic Receiver Functions from Short-term Nodal Seismic Arrays

Guibao Liu, Patricia Persaud, & Robert W. Clayton

Published August 1, 2018, SCEC Contribution #8266

We use teleseismic receiver functions computed from an ∼35‐day nodal dataset recorded along three profiles in the northern basins of Los Angeles, California, to map the depth and shape of the sediment–basement interface and to identify possible deep fault offsets. The results show the Moho discontinuity, the bottom of the basement, and intermediary sedimentary layers. There are also indications of midcrustal offsets along strike of the Red Hill and Raymond faults. The results are compared with receiver functions from nearby permanent broadband stations and the 1993 Los Angeles Region Seismic Experiment (LARSE) profile. The images show that dense deployments of node‐type sensors can be used to characterize basin structure in a noisy urban environment.

Key Words
San Bernardino basin, San Andreas fault, Basin amplification

Citation
Liu, G., Persaud, P., & Clayton, R. W. (2018). Structure of the Northern Los Angeles Basins Revealed in Teleseismic Receiver Functions from Short-term Nodal Seismic Arrays. Seismological Research Letters,. doi: https://doi.org/10.1785/0220180071.

Related Projects & Working Groups
SoSAFE, USR, Community Modeling Environment (CME)