Experiment name: Denmark Str Ovfl (ACM8) Principal Investigator: R.Dickson PI's affiliation: MAFF Mooring Name: 8806 Mooring position: 62.907 deg N, 35.110 deg W Instrument depth: 2687 meters Seafloor depth: 2706 meters Times: starts 04 Jul 1988, ends 20 Sep 1988 Time increment: 60 minutes Instrument type: Aanderaa RCM5 parameter min mean max sd days speed (cm/sec) 1.50 12.15 33.28 5.26 77.8 dir (deg true) 0.00 241.45 359.86 77.39 77.8 u (cm/sec) -30.20 -7.83 21.16 8.01 77.8 v (cm/sec) -18.30 -0.40 20.15 7.03 77.8 temp (deg C) 0.69 1.11 1.49 0.15 77.8 pressure (db) 2684.00 2690.66 2696.00 1.60 77.8 cond (mmho/cm) 30.32 30.62 30.93 0.11 77.8 MAFF notes that at deployment the ship's echo sounder gave a bottom depth of 2706 m. The meter was positioned 19m above the bottom, so its depth was 2687 m which corresponds to a pressure of 2731 db. However, the minimum pressure recorded in situ by the meter was 2684 db. This discrepancy may be explained by inaccuracy of the ship's sounder, but may also be due to the lack of an applicable calibration for the current meter's pressure sensor (see below). Regular calibrations were not available for this meter's pressure and conductivity sensors. Pressures were calculated with coefficients derived for a similar sensor fitted to a different meter. Conductivity coefficients were determined by inserting resistance loops into the cell aperture, a bath calibration not being available. CMDAC has prepared an alternate version of this file in which a few direction spikes and speed spikes, apparently caused by instrument errors, have been smoothed by linear interpolation. Both the original version of the file and the alternate version are available on this disk.
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