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Seismic Shot Navigation Data
Raw DGPS Navigation

The directory rawnav contains the Raw DGPS Navigation that was collected using a USGS 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.
  • Field 1: Longitude
  • Field 2: Latitude
  • Field 3: Line Number
  • Field 4: Shot Number
  • Field 5: UTM Zone 17 X
  • Field 6: UTM Zone 17 Y
  • Field 7: Year
  • Field 8: JD:Hour:Min:Sec

Shotpoint Maps:

Full Extent of Chirp Survey Area
Area 1 | Area 2 | Area 3 | Area 4

Shotpoint Navigation Files (ASCII):

Area 1: Lines 1-28, 85; Tielines 16-21
Area 2: Lines 29-59, 76, 86; Tielines 1, 3-7, 15
Area 3: Lines 60-75, 77-84, 87-91; Tielines 2, 8-14
Area 4: Lines 92-121; Tielines 22-28


Shotpoint SEG-P1 Files:

Area 1 | Area 2 | Area 3 | Area 4