1982 GLORIA Sidescan Sonar Imagery
Index File

How to download a sidescan file.

  FILE FORMAT  HDR    FILE      NL     NS     START DATE/TIME     END DATE/TIME
--------------------+------+--+----+-+---+--+-----------------+-+-----------------+

  NetCDF  RAW      TAPE01    7626   992    82  2  3 19 50  0   82  2  5 14 11 39
  NetCDF  RAW      TAPE02    6661   992    82  2  5 14 18  0   82  2  7  3 18  0
  NetCDF  RAW      TAPE03    6973   992    82  2  7  3 50 19   82  2  8 18 34 19
  NetCDF  RAW      TAPE04    6785   992    82  2  8 18 40  0   82  2 10  8 21 19
  NetCDF  RAW      TAPE05    6756   992    82  2 10  8 29  0   82  2 11 22  0 39
  NetCDF  RAW      TAPE06    7604   992    82  2 11 22  7  0   82  2 13 16 21 19
  NetCDF  RAW      TAPE07    7694   992    82  2 13 17 25 20   82  2 15 12  9 39
  NetCDF  RAW      TAPE08    7620   992    82  2 15 12 20  0   82  2 17  6 39 39
  NetCDF  RAW      TAPE09    6514   992    82  2 17  6 46 19   82  2 18 18 57 19
  NetCDF  RAW      TAPE10    7370   992    82  2 18 19  3  0   82  2 20 11 59 19



NL = number of lines the file is long
NS = number of samples or pixels the file is wide
START DATE/TIME = Year, Month, Day, Hour, Minute, Second
END DATE/TIME = Year, Month, Day, Hour, Minute, Second

GLORIA data were collected at a 20 second pulse repetition rate for the entire cruise which is equivalent to a 30 m pixel size assuming a velocity of sound of 1500 m/sec in water.

*** NOTE THAT THE 1985 CRUISES ALL USED A 30 SECOND RATHER THAN 20 SECOND PULSE REPETITION RATE.***