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Home page > Instruments and Data > Data and MetaData Formats > SEGY files

SEGY files

by Wayne Crawford - 6 December 2011

If your experiment includes active seismics, we will also deliver the data in SEG-Y format, provided that you give us the shot information in a timely fashion and in the format specified below.

(We can also provide you the software and instructions for extracting SEG-Y files yourselves from the continous data. This is useful if you modify/recalcuate the shot positions or times.)

You need to specify:

  • The channels you want extracted
  • The shot info (see shotfile format, below)
    • The line number to associate with the shotfile
    • If you want multiple lines, each in a separate SEGY file, you will need to give us a shotfile for each line, with the line number to associate
  • How long after the shot you want to start extracting (seconds)
  • How long you want each record to be (seconds)

The shotfile format is:

shot/event #, yr, jday, hr, min, sec, deg lat, min lat, deg long, min long

Example:

19 01 307 11 13 52.389 -17 20.996 109 7.36518

50 01 307 12 04 31.178 -17 23.1458 109 10.0562

100 01 307 13 25 36.548 -17 26.6203 109 14.3906

150 01 307 14 42 02.802 -17 30.0885 109 18.7328

200 01 307 15 54 00.016 -17 33.5605 109 23.0725

250 01 307 17 06 08.696 -17 37.0487 109 27.3995

300 01 307 18 19 10.663 -17 40.537 109 31.7278

350 01 307 19 29 45.673 -17 44.0278 109 36.0559

400 01 307 20 42 15.775 -17 47.522 109 40.382

450 01 307 21 55 35.478 -17 50.9914 109 44.7308

500 01 307 23 10 04.676 -17 54.4541 109 49.0865

550 01 308 00 22 34.523 -17 57.9467 109 53.4185

600 01 308 01 34 09.049 -18 1.43748 109 57.7523

650 01 308 02 45 37.132 -18 4.93998 110 2.07816

700 01 308 03 57 53.845 -18 8.42916 110 6.41682

750 01 308 05 12 20.570 -18 11.909 110 10.7648

800 01 308 06 26 01.546 -18 15.371 110 15.1301

850 01 308 07 41 35.343 -18 18.8635 110 19.4702

900 01 308 08 53 22.612 -18 22.3628 110 23.8055

950 01 308 10 05 34.386 -18 25.8424 110 28.1599

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