NAME

     nmorec  -  apply/remove  t(x,v)  nmo  correction  on  entire
     record

SYNOPSIS

     nmorec [ -Nntap ] [ -Ootap ] [ -vvtap ] [ -rsirs ] [  -reire
     ]  [ -svvrs ] [ -evvre ] [ -nsns ] [ -nene ] [ -S ] [ -R ] [
     -T ] [ -E ] [ -B ] [ -V ] [ -XYrace ] [ -? ]

DESCRIPTION

     nmorec takes a set of input traces and applies  the  dynamic
     correction  given  by the t(x,v) moveout equation.  Velocity
     is a function of time and is read in from  a  velocity  disk
     file  created  by  velin (these are in the form of one-trace
     recordsof velocity vs. time).  Once moveout  has  been  com-
     puted  it  is applied/removed using quadratic interpolation.
     The user may choose to output data from before or after  the
     last sample cross-over in the moveout map. The default is to
     output data from after the last cross-over point  only.   An
     optional  xgraph  output  dataset  of  the nmo map at a user
     defined trace location is available.

     nmorec  differs  from  bdnmo  only  in  that  it  reads  and
     processes  an  entire reord at once. This makes it much more
     efficient when running parallel  streams  inside  XIKP.  All
     command line arguments are the same as for bdnmo.

     nmorec gets processing controls from the command line.  Rea-
     sonable  defaults are set up.  In addition, if no input file
     name is given, the binary trace data are expected to  be  on
     the standard input. However, a velocity model must be speci-
     fied.

  Command line arguments
     -N ntap
          Enter the full path of the  file  containing  the  data
          set.   If  not specified, input is expected to be stan-
          dard input.  If standard input  is  not  specified  and
          there  is  no  input,  e.g., program run in background,
          expect a termination. (default standard input )

     -O otap
          Enter the full path of the output file.  If not  speci-
          fied,   output  is  expected  to  be  standard  output.
          (default standard output )

     -v vtap
          Enter the full path of the file containing the velocity
          model.   This  file  is  in  SIS format of RMS velocity
          versus two way travel time.  Program will stop  if  the
          velocity  model  file  is not given. The velocity model
          must have  the  same  sample  interval  and  number  of
          samples  as  the  trace  data.   There  is one velocity
          record, consisting of one velocity-time trace per input
          seismic  record.   The  header of the vmod file must be
          consistent with that of the data file.  For  this  pur-
          pose,  the  program velin is used to generate the velo-
          city file in SIS format.  (default none ).

     -ns ns
          First trace in record to process (default = 1 )

     -ne ne
          Last trace in  record to process (default = all )

     -rs irs
          First  record to process (default = 1 )

     -re ire
          Last  record to process (default = all )

     -sv vrs
          First  velocity record to process (default = 1 )

     -ev vre
          Last  velocity record to process (default = all )

     -E   If present data associated  with  the  portion  of  the
          moveout  map  below  the last sample cross-over will be
          output.

     -T   If present data associated  with  the  portion  of  the
          moveout  map  above  the last sample cross-over will be
          output.(note: strange things could occur when  applying
          nmo,  filtering, then removing nmo should more than one
          sample cross-over be present)

     -S   If present apply internal trace header statics  (before
          nmo).

     -R   If present remove normal moveout

     -B   If present  input  velocity  function  is  expected  in
          decreasing shot order.

     -XY trace
          If present the normal moveout sample map for the  trace
          requested  will  be  output  to a file name nmorec_fcn.
          This file may be accessed by xgraph for a plot  of  the
          function. (i.e. xgraph -fg black -bg white -zg black -t
          "Moveout Sample Map" -y "sample  in"  -x  "sample  out"
          nmorec_fcn)


     -V   Verbose mode. List command line  and  lineheader  input
          parameters.

     -?   Query  mode.   With  this  flag,  nmorec  will  give  a
          description  of the command line arguments and stop the
          program.

BUGS

     Unknown

AUTHOR

     P. G. A. Garossino, Amoco Research, Tulsa, 1991

COPYRIGHT

     copyright 2001, Amoco Production Company
               All Rights Reserved
          an affiliate of BP America Inc.