← Back to Gallery

Exploring the Potential of Low-cost Hydrophones in Constraining Subsea Faults and Seismic Early Warning for the San Francisco Bay Region

Mapping the buried, offshore extent of faulting has a major challenge in the evaluation of seismic potency and hazard of active faults. The issue is mainly due to the lack of adequate station coverage caused by cost and logistic issues of station deployment. However, following the 2022 Kish Island earthquake cluster in the Persian Gulf, we showed that low-cost hydrophones ("HBox") deployed offshore in shallow water can be provide crucial information regarding the location of small earthquakes, hence offering assistance in constraining offshore fault properties. In this study, we present a site-selection algorithm for efficient deployments of these instruments in the San Francisco Bay area as a means to increase the ability to monitor off-network, offshore micro-seismicity of the San Andreas Fault. Our selection criteria are based on the simulated apparent velocity and frequency of seismo-acoustic waves, bathymetric slope analysis, as well as logistic constraints on predicted station signal-to-noise ratio.

Session: Advances in Marine Seismoacoustics

Type: Oral

Room: 209A

Date: 4/18/2023

Presentation Time: 02:45 PM (local time)

Presenting Author: Amir Salaree

Student Presenter: No

Additional Authors