NAME

     gli2mxc   - converts output of GLI3D to both  MXC  AND  VTAP
     format.

SYNOPSIS

     gli2mxc [ -Nntap] [ -Ovtap] [ -Mmxc] [ -B] [ -Q] [ -1lay1] [
     -2lay2]  [  -3lay3]  [  -4lay4]  [  -5lay5] [ -nlaynlayer] [
     -dxidx] [ -dznzinc] [ -firstnstat0] [ -lastnstat1] [ -xmaxx-
     max]  [  -zmaxzmax]  [  -datumdatum]  [  -nznz]  [  -v0v0] [
     -iseediseed] [ -?]

DESCRIPTION

     gli2mxc reads a report file computed by GLI3D  (*.ele)  that
     contains  weathering statics corrections, model coordinates,
     and model velocities.  The user selects grid size  (dx.  dy,
     xmax,  zmax),  the  subset  of  desired traces (first,last),
     overrides the datum elevation (datum), inputs the number  of
     layers,  specifies  the  number  of depth grids for the VTAP
     (nz), provides the velocity  between  topography  and  datum
     elevation,  and  decides  which  (if  any)  layers should be
     filled with the replacement velocity.  Any missing group  is
     interpolated from its nearest neighbors.

     GLI2MXC gets data and parameters  from  command  line  argu-
     ments.  These  arguments specify the input GLI file (*.ele),
     the standard output VTAP file, and an auxilliary output  MXC
     file,  a  flag  signifying  3  or more layers, the number of
     layers in the model (redundant), the dx and dz intervals, an
     origin  specifier  to indicate what station lies at the ori-
     gin, the maximum horizontal and depth extent of  the  model,
     the  number  of  depth  levels  in  VTAP  file, the velocity
     between topographic and datum elevation, an override for the
     datum  elevation,  and  a  series  of flags to fill specific
     layers with the replacement velocity. (Note: Layer 1  begins
     with  the topographic surface and extends to the base of the
     weathering layer.)

     Note: For the IKP module, VTAP goes to output 1, stderr goes
     to output 2, and MXC goes to output 3.


  Command line arguments
     -Nntap
          Enter the input GLI file name (*.ele) immediately after
          typing -N.

     -Ovtap
          Enter the output VTAP file name immediately after  typ-
          ing -O. (default=vtap).

     -Mmxc
          Enter the output MXC file name immediately after typing
          -M. (default=mxc).

     -Bbig
          Type -B if the statics model contains 3 or more layers.

     -Rbig
          Type -R to revers the vtap output.

     -Qbig
          Type -Q for GLI3D input files that came  from  the  old
          batch  GLI3D; otherwise GLI2MXC assumes the GLI3D input
          file came from the newer interactive program.

     -1lay1
          Type -1 to fill layer 1 with the replacement velocity.

     -2lay2
          Type -2 to fill layer 2 with the replacement velocity.

     -3lay3
          Type -3 to fill layer 3 with the replacement velocity.

     -4lay4
          Type -4 to fill layer 4 with the replacement velocity.

     -5lay5
          Type -5 to fill layer 5 with the replacement velocity.

     -nlaynlayer
          Enter number of layers in refraction model after typing
          -nlay (default=2).

     -dxdx
          Enter x-grid interval (group  interval?)  after  typing
          -dx (default=20).

     -dznzinc
          Enter z-grid interval after typing -dz (default=10).

     -firstnstat0
          Enter first desired trace (default=1).

     -lastnstat1
          Enter first desired trace (default=last trace).

     -xmaxxmax
          Enter length of model in x after typing -xmax.

     -zmaxzmax
          Enter length of model in z after typing -zmax.


     -datumdatum
          Enter datum elevation after typing  -datum  (default  =
          refraction datum).

     -nznz
          Enter number of depth levels in VTAP file after  typing
          -nz.

     -v0v0
          Enter   velocity   between   datum    and    topography
          (default=0).

     -iseediseed
          Enter seed value to add to all  table  entries  in  the
          statics  file  to prevent any naturally occuring zeros.
          Default value is -7777 and works for all  cases  unless
          7777 is a number in the statics file.

     '-?' Enter '-?' to get online help. Program terminates after
          printing this.

BUGS

     I know, they're program redundancies.

AUTHOR

     Don Wagner, APR, x3281.

COPYRIGHT

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