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Mooring data format

Quality controlled data (time series)

All of the data obtained by the WIFE mooring observations have the Stranger file format, which is used in the Buoy Group at Oregon State University, USA. The file begins with metadata. Following the metadata, each line represents one sampling cycle and contains hour, day, month, year, and measured parameters and a line count. Note that if you read this file with a computer program, the first line of the file tells the program where the data begins, the second line tells it how many lines of data there are, and the third line describes the format of the data. The list following "Parameters:" describes the time series.

Example


    29 header lines
 12043 data lines
(i4,3i3,2f9.3,5f8.2,i6)
Experiment name: WIFE
Principal Investigator: Kaoru Ichikawa
PI's affiliation: RIAM, Kyushu University
Mooring name: WM1_1
Mooring position: 12.7903 deg N, 170.2313 deg E
Instrument depth: 3392 meters
Seafloor depth: 5356 meters
Times: starts 31 May 2003, ends 13 Oct 2004
Time increment: 60 minutes
Instrument type: 3DACM
Instrument S/N: 1573
True north correction (IGRF10): +7.883 deg
WIFE accession code: WM1_1_CM1
Parameters:
      hour
      day
      month
      year
      speed (cm/sec)
      dir (deg true)
      u (cm/sec)
      v (cm/sec)
      w (cm/sec)
      tilt (deg)
      temp (deg C)
      line count
0300 31 05 03    6.914   69.114    6.46    2.46   -2.25    1.88    1.55     1
0400 31 05 03    7.020   83.787    6.98    0.76   -1.43    1.93    1.52     2
0500 31 05 03    7.078   87.878    7.07    0.26   -1.59    1.94    1.52     3
0600 31 05 03    4.797   71.101    4.54    1.55   -1.79    1.99    1.52     4
0700 31 05 03    5.484   36.820    3.29    4.39   -2.76    1.94    1.52     5
...

Merged low-pass filtered and interpolated data (vertical profiles)

The moored currnet meter and CTD data were low-pass-filtered with a half power gain at 5 days and re-sampled at 1 day intervals. At each mooring station, these data were vertically interpolated at 2 dbar intervals by a linear interpolation for the current meter data and by a piecewise cubic Hermite spline interpolation for the CTD data. Data gap between the first and second mooring periods were linearly interpolated. Direction of U component of current velocity is defined as parallel to the observation line (north-northeast) and direction of V component is defined as normal to the observation line (west-northwest).

Example


#Observation: WIFE1
#Station_name: WM1
#Latitude:  12.77765
#Longitude:  170.23980
#Depth(m): 5367
#Days_from_Jan_1_2003:  153.0
#CTD_depth(dbar):  3437.4  3948.1  4467.6  4974.5  5307.2
#CM_depth(dbar):  3435.4  4466.6  5304.2
#Direction_of_U(degT):  19.000
#Missing_value: -9.0000
#PRS    TMP     SAL     U       V
# DBAR   ITS-90  PSS-78     M/S     M/S
 3368.0 -9.0000 -9.0000 -9.0000 -9.0000
 3370.0 -9.0000 -9.0000 -9.0000 -9.0000
 3372.0 -9.0000 -9.0000 -9.0000 -9.0000
 3374.0 -9.0000 -9.0000 -9.0000 -9.0000
 3376.0 -9.0000 -9.0000 -9.0000 -9.0000
...