| Mooring Recovery Operation |
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RECORDING TEAM—Summer Student Fellow Megan Jamison, left, records instrument serial numbers with help from postdoctoral scholars Dave Ralston and Malcolm Scully. Serial numbers are used later to match the data with the location of the recordings. Seven aluminum instrument tripods were placed on the bottom of the Merrimack to record various properties for about two months. The white cylinder records temperature and conductivity. The red cylinder is an acoustic Doppler current profiler, which records the flow rate of overlying water in 25-centimeter intervals nearly to the surface. Strapped to a horizontal cross bar, and barely visible, is a blue cylinder that measures pressure, used to derive changes in sea level related to tidal cycle and changes in fresh water flow. It measures sea level to within less than 1 centimeter.
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Posted: May 22, 2013
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