Observing this "backscatter" phenomenon through a technique called Distributed Acoustic Sensing (DAS), the 20 km long cable was turned into a bed of 10,000 motion sensors that could detect seismic activity with picometer precision.
Working from a beachside shack on California's Monterey Bay, Nate Lindsey fired a stream of infrared laser pulses down a long fiber-optic cable extending onto the ocean floor. The miles-long cable had been there for a decade...but Lindsey, a geoscientist at UC Berkeley, was trying something new
Scientists discovered California’s newest known offshore faults by borrowing a garden hose-size fiber optic cable that spans the seafloor of Monterey Bay and turning it into an ad-hoc seismic array….
US News & World Report's 2020 rankings for Best Global Universities for Civil Engineering places Berkeley CEE in 5th place. The rankings are based on reputation and research in the field. Berkeley CEE is the highest ranking US university on the list.