
     Accession  8200021  Documentation


   Drifting Buoy data received from Claudia Barton/William C. Patzert/Gerald
   J. McNally at Scripps Institution of Oceanography

   The enclosed three magnetic tapes  contain the raw drifting buoy data for 
   four sets of drifting buoys deployed during the Hawaii/Tahiti Shuttle
   Experiment  (1979 - 1980).  See Attached data report.

  The data consists of information transmitted from each buoy to and orbiting
  satellite.  Data were received by two different systems:

    1)  RAMS (Random Access System) for all buoys of the set
        referred to as EDS2.

    2)  ARGOS of the Center Spatial de Toulouse for the 
        remaining drifters of EDS2, all the drifters of the
        setEDS3 and EDS4.


  Tapes 1 and 2  contain all the data received by ARGOS.  Tape 3 contains
  all the data provided by RAMS.  For each tape there is one file per drifter.
  The following table shows the contents of each tape.

    TAPE  1          TAPE  2          TAPE  3
    _______          _______          _______

    2800  2823       2826                702
    2801  2824       2827                734
    2802  2825       2828                745
    2803             2829               1002
    2804             2830               1034
    2805             2831               1304
    2806             2832               1332
    2807             2833               1463
    2808             2834               1561
    2809             2835               1616
    2810             2836               1667
    2811             2837               1765
    2812             2838
    2813             2839
    2814             2840
    2815             2841
    2816             2842
    2817             2843
    2818             2844
    2819                 
    2820
    2821
    2822



Page 2.



The three tapes are written as follows:

    9 track, 800 bpi, ASCII odd parity
    logical record size  80
    blocking factor  50
    no tape labels
    tape 1:  26 files,  tape 2:  19 files,  tape 3:  12 files
   

  Data format for tape 1 and 2
  ----------------------------

  -First record

  NUMEXP:       Experience number  (project number)
  NCAR  :       Number of records for this platform
  NUMPF :       Platform number
  NC    :       Number of 8-bit blocks in the sensor message
  JOJUL :       Julian Day
  NAN   :       The last 2 digits of the year
  JOUR  :       Day in the Year
  NHEU  :       Hours (G.M.T.)
  MIN   :       Minutes
  NSEC  :       Seconds
  IDO   :       Location index
  IBO   :       Type of platform
  NSAT  :       Satellite number (no.1 or no.2)
  IHIN  :       Initial altitude
  IFIN  :       Initial frequency
  ISEQ  :       Record number (=1)

  -Second record

  NUMEXP:       Experience number
  NLOC  :       Location quality index
  PHI   :       Latitude in degrees
  ALAM  :       Longitude in degrees
  PHIP  :       Speed in latitude in degrees/day  or latitude and logitude
  ALAP  :       Speed in longitude in degrees/days of the second solution
  IH    :       Altitude
  IF    :       Transmission frequency
  ISEQ  :       Record number (=2)




Page 3.


  -Third record

  NUMEXP:     Experience number
  JOJUL :     Julian day
  NHEU  :     G.M.T. hour          date of reception by the satellite 
  MIN   :     Minutes              of the following sensor data
  NSEC  :     Seconds
  NF    :     Number of identical messages received during this pass
  C1    :     Sensor 1
  Q1    :     Quality of sensor 1 (blank or ?)
  C2    :     Sensor 2
  Q2    :       "
  C3    :       "
  Q3    :       "
  C4    :       "
  Q4    :       "
  ISEQ  :      Record number


  When the platform has more than 4 sensors, the data of the following
  sensors are transmitted according to the following format, in as many
  records as necessary:

  NUMEXP
  C5
  Q5
  C6
  Q6
  C7
  Q7
  C8
  Q8
  ISEQ

  The following messages of the same platform are transmitted 
  beginning with the record no. 3.

  The information related to the next platform are transmitted,
  beginning with the record no.1.

  Format for the reading of records
  ---------------------------------

  First record   I5,2X,I2,1X,I5,1X,I2,1X,I5,1X,I2,1X,I3,1X,I2,1X,
                 I2,1X,I2,1X,I1,1X,I3,1X,I1,4X,I6,1X,I9,9X,A3

 Second record   I5,5X,I2,3X,F8.3,1X,F8.3,1X,F8.3,1X,F8.3,2X,
                 I6,1X,I9,9X,A3


   Page 4.

   

   Third record     I5,1X,I5,1X,I2,1X,I2,1X,I2,1X,I2,2X,A10,1X,A1,
                    1X,A10,1X,A1,1X,A10,1X,A1,1X,A10,1X,A1,1X,A3
                    
   Following        I5,20X,A10,1X,A1,1X,A10,1X,A1,1X,A10,1X,A1,1X,
   records          A10,1X,A1,1X,A3

  More information regarding the acquisition of this data set is
  available from the manual "ARGOS Platform Transmitter Terminals
  General Specifications" - Centre Spatial de Toulouse 18, Avenue 
  Edouarde Belin, 31055, TOULOUSE, FRANCE.

  Data format for Tape 3:
  -----------------------

  The format for each record is:

  I4    Buoy identification
  2X
  I2    Year
  2X
  I3    Day
  1X
  I2    Hour
  1X  
  I2    Minute
  2X
  F8.3  Latitude ( + or - 90 deg; + North, - south)
  F8.3  Latitude of the second solution
  F8.3  Longitude (0 to 360 deg.)
  F8.3  Longitude of the second solution
  2X
  I4    Data word 1
  I4    Data word 2
  I4    Data word 3
  2X
  I6    Orbit number
