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Hey Paul,
Next email will have a script that applies dmo correction 
(assuming 1500 m/s), then resorts data back into gathers 
again for either velocity analysis, or ready to stack, 
users choice!  Users needs to play with LogStrecth stuff 
to make sure they get it right, see Liner Geophysics 
article, in a nut shell, make sure you can stretch your 
data, then unstretch it (w/o DMO) and not screw it up, 
then through in the DMO stuff!

Cheers,



#/bin/csh -f

######################################################################
#
#  MARBE: RPs 229 to 4901 28 m shot spacing
#
######################################################################

sioseis << !
procs sort diskin prout weight filter nmo logst1 tx2fk dmo fk2tx 
      logst2 diskoa end 

sort  
 ipath /export/home/dmo3/kent00/marOH2A.g.229.4909
 opath sort.list.dmo.MARBE.OH2A
 lkey1 10
 lkey2 6
 limit1 138 4138
 limit2 229 4909
 flag51 -1 end
end
              
diskin 
 ipath /export/home/dmo3/kent00/marOH2A.g.229.4909
 spath sort.list.dmo.MARBE.OH2A set 3.0 8.0 end
end

weight
 fno 1971 lno 1971 twp 52 0 end
 fno 3429 lno 3429 twp 59 0 end
 fno 4365 lno 4365 twp 64 0 end
end

prout
 fno 1 lno 99999 ftr 1 ltr 9999 end
end

filter
 pass 5 25 ftype 0 dbdrop 48 end
end

nmo
 vtp 1500 3.0 1500 8.0 end
end
 
logst1
  type 1 tsamp1 0.0005 tcut 3.0
  end
end

tx2fk
 stime 0.0 etime 1.0 prestk 1
 xwindow hann xwinlen 10
 path1 scratch1
 path2 scratch2 end
end

dmo
 window rect deltax 28.0 lprint 1 end
end

logst2
 type 2 tsamp2 0.004 tcut 3.00 sltime 3.0 eltime 8.00
 end
end

diskoa
  opath /net/seismic1/gkent/marOH2A.dmo.1500.g.229.4909 end
end

end
!

/bin/rm -f sort.list.dmo.MARBE.OH2A

######################################################################
#
#  NOW CMP SORT and unNMO DMOed GATHERS
#
######################################################################

sioseis << !
procs sort diskin nmo diskoa end

sort
 ipath /net/seismic1/gkent/marOH2A.dmo.1500.g.229.4909
 opath sort.list.dmo.MARBE.OH2A.partII
 lkey1 6
 lkey2 10
 limit1 229 4909 
 limit2 138 4138
 flag51 -1 end
end

diskin
 ipath /net/seismic1/gkent/marOH2A.dmo.1500.g.229.4909
 spath sort.list.dmo.MARBE.OH2A.partII end
end

nmo
 type 2 vtp 1500 3.0 1500 8.0 end
end

diskoa
 opath /export/home/dmo3/kent00/marOH2A.denmo.dmo.1500.g.229.4909 end
end

end
!

######################################################
#
#  NOW TREAT LIKE REGULAR GATHERS, JUST DMO CORRECTED
#
######################################################

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