Identifying the Moho and an intracrustal interface along a Nodal Seismic Line in the eastern San Bernardino Basin

Brian J. Aguilar, Patricia Persaud, & Robert W. Clayton

Published August 14, 2020, SCEC Contribution #10612, 2020 SCEC Annual Meeting Poster #044

We use receiver functions computed from the 2018 M 7.3 Venezuela earthquake recorded along the SB2 profile of the Basin Amplification Seismic INvestigation (BASIN) project to map the Moho discontinuity and an intracrustal interface. The SB2 profile is an ~15 km long, N-S oriented seismic line located in the eastern side of the San Bernardino basin between the San Andreas fault zone and the San Jacinto fault zone. It has 61 nodal stations with a spacing of roughly 350 m. The intracrustal interface is identified close to 2 s in parts of the profile. In the northern part of the profile, the Moho P-to-S conversion is at ~4 s and gradually increases near the middle of the profile. We will show our structural interpretations along the SB2 line and discuss their relationship to previous work.

Key Words
Receiver Functions, Nodal Array, San Bernardino Basin

Citation
Aguilar, B. J., Persaud, P., & Clayton, R. W. (2020, 08). Identifying the Moho and an intracrustal interface along a Nodal Seismic Line in the eastern San Bernardino Basin. Poster Presentation at 2020 SCEC Annual Meeting.

Related Projects & Working Groups
Seismology