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Doppler Shift

Engineer Rob Goldsborough of the WHOI Oceanographic Systems Laboratory works to integrate an acoustic doppler current profiler (ADCP) into the electronics of the Tunnel Inspection Vehicle (TIV). WHOI researchers adapted and built a specialized version of their workhorse REMUS autonomous underwater vehicle for use by the New York City Department of Environmental Protection. In 2004, the TIV traveled 35 miles through the underground aqueduct in order to create a photographic record of the interior and inspect for cracks in the city’s vital water supply system. (Photo by Tom Kleindinst, Woods Hole Oceanographic Institution)