Technical Specifications of the Moored Profiler

The MP vehicles use a traction drive system to travel up and down a conventional subsurface mooring wire based on a user-specified operations program. Listed below are some technical specifications for the instruments and statements about the quality of the oceanographic data derived from them.
 
 
 
       WHOI Prototype Moored Profiler               McLane Moored Profiler
Shape  oblate spheroid with leading edge cutoff     streamlined cylinder
Dimensions   80 cm tall x 40 cm wide x 65 cm fore-aft   124 cm tall x 34 cm wide x 51 cm fore-aft
Mass     ~50 kg    ~70 kg
Maximum operating depth      5000 m     6000 m
Profiling speed     ~30 cm/s   ~25 cm/s
Endurance   ~950 km of profiling   ~1200 km of profiling
Sensors
   CTD
           noise levels
           accuracy
        FSI MicroCTD, transitioned to EMCTD
               0.2 db, 0.5 mC, 0.001 mmho
               1-2 db, 1-2 mC,  ~0.002 mmho*
        FSI Excell MicroCTD
               0.2 db, 0.5 mC,  0.001 mmho
               1-2 db, 1-2 mC,  ~0.002 mmho*
   ACM
            noise levels
            accuracy
        FSI 3D-ACM
               0.1 cm/s**
               ~1 cm/s
        FSI 2D-ACM
               0.1 cm/s**
               ~1 cm/s

* assumes Profiler samples a section of the water column with stable theta/S allowing in situ calibration adjustments through a deployment
** noise level at rest.  When profiling, vibration induces a noise level in measured currents of around 1 cm/s.
 
 

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