Experiment name: ACM24 (Deep Basin) Principal Investigator: G.Weatherly PI's affiliation: FSU Mooring Name: Mooring 2 Mooring position: 18.738 deg S, 37.256 deg W Instrument depth: 2800 meters Seafloor depth: 3491 meters Times: starts 01 Oct 1993, ends 12 Sep 1994 Time increment: 60 minutes Instrument type: modified Geodyne 101 parameter min mean max sd days speed (cm/sec) 1.91 9.33 34.25 5.39 345.8 dir (deg true) 0.00 182.34 359.94 108.01 345.8 u (cm/sec) -22.11 -0.35 26.53 7.04 345.8 v (cm/sec) -31.73 0.51 28.47 8.13 345.8 temp (deg C) 2.50 2.76 2.99 0.08 345.8 This record contains a month-long episode (lines 2495 - 3210; 1700 11 Jan 94 - 0000 12 Feb 94) during which speed is constant at 2 cm/sec, the current meter's threshold. This may have been caused by a sensor failure, or (less likely) current speeds at or below the threshold. There are many other instances of shorter duration in which speed also drops to threshold or near-threshold values, which look very much like sensor failures (e.g., 26 Dec 93, 28 Dec 93, 14 - 16 May 94, 22 - 30 May 94). CMDAC believes that these are, in fact, sensor failures and has prepared an alternate version of the file in which most of these episodes have been replaced by linear or predictive interpolation. The month-long episode described above has been removed entirely. A doubtful episode in mid-February 1994 remains unchanged. This problem appears not to have affected direction, which is present and appears good throughout. Both the original file and the alternate are available here.
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