Two ODEC data examples

                      DATASET #2
    I converted the ODEC datafile to SEG-Y before trying various
processing and plotting parameters.
sioseis << eof
procs diskin diskoa end
diskin
   ipath y0901_01.dat format odec end
end
diskoa
   opath data end
end
end
eof
>lsd data 1 3
      SHOT   TR       RP    TR ID  RANGE DELAY NSAMPS    SI   YR DAY HR MIN SEC
         1     1       0     0  1      0  4687   2334    60 2002 244 19  55  38
         2     1       0     0  1      0  4687   2334    60 2002 244 19  55  48
         3     1       0     0  1      0  4687   2334    60 2002 244 19  55  58

    A plot was made with these parameters:
sioseis << eof
procs diskin plot end
diskin
   fgmt 0330 lgmt 0730 fday 245 lday 245
   ipath data end
end
filter
   ftype 0 pass 20 1000 dbdrop 48 end
end
agc
   winlen .1 end
end
plot
    stime 4
    wiggle 0
    colors gray dptr 1
    ann gmtint anninc 5
    nibs 2859 vscale 2.5 nsecs .5 tlines  .05 .1
    def .03 trpin 300 opath siofil
    end
end
end
eof
sio2sun siofil sunfil.ras
open -a /Applications/GraphicConverter\ US/GraphicConverter.app sunfil.ras



                      DATASET #1
These 3.5KHz. data were recorded aboard the R/V Revelle in spring
1997 by Alan Mix (OSU) and Steve Bloomer (UNB).  The data were
recorded in pseudo-SEG-Y format.  FYI, the following quirks are
removed by sioseis:
1)  Byte swapped into big endian byte order (IBM, Sun, HP, SGI)
2)  Trace header number of samples increased to include the 160
    short word trailed ODEC writes after the 3.5 data.
3)  Converts the unsigned 16 bit integers into signed reals. 


sioseis << eof
procs diskin diskoa end
diskin
   format odec ipath /usr/people/ftp/pub/data/y0307-02.sm.sgy end
end
diskoa
   opath 3.5khz end
end
prout
    fno 0 lno 99999 ftr 0 ltr 9999 end
end
end

>lsd /home/vol4/3.5khz 1 5
      SHOT   TR       RP    TR ID  RANGE DELAY NSAMPS    SI   YR DAY HR MIN SEC
       401     1       0     0  1      0  5177   2414    60 1997  66 19  59  12
       402     1       0     0  1      0  5176   2414    60 1997  66 19  59  22
       403     1       0     0  1      0  5176   2414    60 1997  66 19  59  32
       404     1       0     0  1      0  5174   2414    60 1997  66 19  59  42
       405     1       0     0  1      0  5172   2414    60 1997  66 19  59  52


The plot of these data.

Notice that the data are all positive numbers and are not traditional
seismic voltages.