Observing ocean waves and their nonlinear interactions using fiber optic cables

M. Gonzalez-Herraez

doi:10.1117/12.3012361

13 March 2024 Observing ocean waves and their nonlinear interactions using fiber optic cables

M. Gonzalez-Herraez

Proceedings Volume 12912, Quantum Sensing, Imaging, and Precision Metrology II; 129120I (2024) https://doi.org/10.1117/12.3012361
Event: SPIE Quantum West, 2024, San Francisco, California, United States

Abstract

Submarine optical fiber communications are nowadays the most important infrastructure of international communications, carrying over 99% of the intercontinental data traffic. These critical infrastructures for communications also have a strong potential for geophysical monitoring in the bottom of the oceans. Here, we review our work on oceanographic monitoring using Distributed Acoustic Sensing (DAS) over submarine fiber cables. We show that these measurements can be used to obtain information of ocean dynamics, including accurate observations of surface waves, currents, and tides, and all the associated nonlinear phenomena driving water mixing, which have strong impact in climate change estimations. We show that internal waves, a large-scale phenomenon generated by the interaction of barotropic tides with bathymetric changes in the sea-bottom, can be very accurately observed using chirped-pulse DAS sensing technology over these cables.

Conference Presentation

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

M. Gonzalez-Herraez "Observing ocean waves and their nonlinear interactions using fiber optic cables", Proc. SPIE 12912, Quantum Sensing, Imaging, and Precision Metrology II, 129120I (13 March 2024); https://doi.org/10.1117/12.3012361

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