This Project Grant award from the National Science Foundation Division of Ocean Sciences totals $137,255 to support the development of a plate-scale distributed strain sensing system as a candidate for earthquake early warning. Funded under the Geosciences program (CFDA 47.050), the University of California San Diego Scripps Institution of Oceanography will use the award period from October 1, 2022 to September 30, 2023 to establish the feasibility of measuring seafloor deformation along continental shelves, where hazardous stress builds up before large, potentially devastating earthquakes and tsunamis. Specifically, the grantee will expand prior proof-of-concept work using interferometric fiber optic cables to develop a 100 km distributed strain sensing network capable of monitoring 10 sensing points in real-time. The laboratory-based tests funded through this award aim to validate time-division multiplexing approaches for geophysical monitoring at scales relevant to capturing offshore earthquake deformation signals faster than ground shaking reaches land, facilitating early warning.
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