USGS
Navigation
Seismic Shot Navigation
Raw DGPS Navigation

The directory rawnav contains the Raw DGPS Navigation collected using a differential GPS system (Ashtech). These files were extracted from the SEG-Y seismic trace headers for each unique fix available (~ every 5 sec.). WARNING: These data have not been checked for errors. Use with caution.
Seismic Shot Navigation

The navigation is stored in ASCII files using six fields separated by tabs. These files are located in the shotnav subdirectory under the nav directory.
  • Field 1: Longitude
  • Field 2: Latitude
  • Field 3: Line Number
  • Field 4: Shot Number
  • Field 5: UTM Zone 18 Easting
  • Field 6: UTM Zone 18 Northing
  • Field 7: Year
  • Field 8: Julian Day:Hr:Min:Sec
Shotpoint Navigation Files (ASCII):

Area 1 | Area 2 | Area 3 | Area 4 | Area 5

Shotpoint Maps:

Full Extent | Area 1 | Area 2 | Area 3 | Area 4 | Area 5

Shotpoint SEG-P1 Files:

Area 1 | Area 2 | Area 3 | Area 4 | Area 5

Shipboard Log: Excel format | Text file