Analysis of CCTechnology's HydroScience SeaMux data

    Hydrosciene's SeaMux generates SS formatted files
on a PC (Intel byte order).  It's SEG-D with a 32 byte
header that's in Intel byte order.  They use the SEG-D 8036
data word format (24 bit intger), but the SEG-D record length
is incorrect.
    Consequently, an option was added to SIOSEIS process SEGDDIN,
"format hti".

    Five test files were submitted.  I converted these files to
SEG-Y using script:
sioseis << eof
procs segddin diskoa end
segddin
   format hti
!   ipath SeaMux-624-channels.ss end
!   ipath SeaMUX-first-record-in-water.ss end
!   ipath SeaMUX-744-channels-31Hz-osc.ss end
  ipath SeaMUX_Sharkbite.ss end
!   ipath SeaMUX-744-channels-inputs-grounded.ss end
end
prout
   fno 0 lno 99999 ftr 0 ltr 999 end
end
diskoa
!   opath SeaMux-624-channels.segy end
!   opath SeaMUX-first-record-in-water.segy end
!   opath SeaMUX-744-channels-31Hz-osc.segy end
   opath SeaMUX_Sharkbite.segy end
!   opath SeaMUX-744-channels-inputs-grounded.segy end
end
end
eof


Notice that comments start with ! or #.


    The basic script for plotting was:
sioseis << eof
procs diskin plot end
diskin
!   ipath SeaMux-624-channels.segy end
   ipath  SeaMUX-first-record-in-water.segy end
end
plot
   def .005 vscale 1.25 srpath sunfil.ras nsecs 10
   nibs 2859 ann sh&tr trpin 50
   end
end
end
eof
xloadimage -r 90 sunfil.ras &


     Each file took a few tries with plot parametr def because
the plot scalar is set on the first trace and the first few
traces are garbage.  I could have skipped the garbage traces
by using ftr/ltr.
     I used another plotting trick so that the gar range
traces would still be visible.   "Overdrive" the close traces
and clip them.