Index of /data/reports/2004/04-008
This direcory structure contains Standard SEGY shot gathers (.sgy)
from the Polonaise experiment in Poland in 1997. This was a refraction
project. There was a project in 2000 (Celebration 2000) that could be
considered a continuation of Polonaise.
The shot gathers are broken down into north-south (_n), east-west (_e)
and vertical (_z) components.
The geometry should be loaded into the headers.
Rectangular coordinates were used with mapproject command.
mapproject $tsp/geom/rec.dd-Jml:0.9996 -R13/51/26/55r-F-: | awk -f
This means it is in Mercator, with the beginning of the coordinate frame on
lat 51N, lon 13 E.
Geographical coordinates (in seconds of arc) are located in non-standard part
of the SEG-Y trace header.
bytes 221-224 receiver geo.lat
bytes 225-228 receiver geo.lon
bytes 229-232 source geo.lat
bytes 233-236 source geo.lon