The Barkley hydrates crawler, nicknamed "Wally", is one of two mobile instrument platforms in our network (the other is our Vertical Profiler System). Wally's mission, crawling the hydrates fields in Barkley Canyon, is to help researchers carry out detailed investigations of processes influencing gas hydrates evolution at the seafloor.
Wally is connected to the Barkley Hydrates instrument platform via a 70m cable, which provides power and communications. The crawler “crawls” on dual tractor treads, which allow a full range of forward, backward and turning movement. Including its titanium frame, drive motors, sealed electronics chambers, wiring, lights, HD video camera, and sensors, the unit's out-of-water weight is 275 kg. With syntactic foam floatation blocks attached, this is reduced to an in-water weight of 40 kg. One unique feature is its control interface, which plugs directly into the Web. If all works out as planned, you'll one day be able to tune in to a live sea floor crawl on the NEPTUNE website.
(The hydrates crawler is not connected to any satellite instruments.)
Connected to Barkley Slope/Canyon node on 19 Sep 2009 from the R/V Thompson.
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