Appendix (Merge2)

The following bash script is used in down-hole surveys to form the various resorted data sets. This script is designed for a vertical impact source with a load-cell signal on channel 7.

#!/bin/sh
#  $Id: Merge2,v 1.1.1.1 2017/04/13 21:40:01 pm Exp $
#set -x
# USE THIS FOR 7 TRACE DATA SETS:
# Merge2:  basic script to merge traces into P-wave gather and parse off load_cell trace
# assumes channels in following order 1,2,3 down-hole, 4,5,6 reference, 7=load_cell
# !!!Does NOT do enhanced processing. Simple trace extraction with bmrg program.!!!
#
# This combines all the shot gathers into receiver gathers for the different
# geophone components in a down-hole survey.  
#
#    NOTE:!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
# This script was designed for a vertical impact source. There is no S-wave enhancement
# since the source is excited with only one polarization. 
#
#     Copyright (c) 2017 Paul Michaels
#     <pm@cgiss.boisestate.edu>
#     This program is free software; you can
#     redistribute it and/or modify it under the terms
#     of the GNU General Public License as published
#     by the Free Software Foundation; either version
#     2 of the License, or (at your option) any later
#     version.  This program is distributed in the
#     hope that it will be useful, but
#     WITHOUT ANY WARRANTY; without even the implied
#     warranty of MERCHANTABILITY or FITNESS FOR A
#     PARTICULAR PURPOSE.  See the GNU General Public
#     License for more details.
#     You should have received a copy of the GNU
#     General Public License along with this program;
#     if not, write to the Free Software Foundation,
#     Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

#set -x

#...define parameters  YOU MUST DEFINE THESE FOR EACH NEW SURVEY
#                      SINCE IT IS LIKELY THAT THE NUMBER OF RECORDS
#                      WILL VARY WITH EACH SURVEY !!!!

#...define parameters
odmin=01
odmax=83
PRFX=brot10

#pull off load_cell channels
bmrg $PRFX $odmin $odmax 1 7 7 1>/dev/null
mv bmrg.seg ldcl.seg
echo "created ldcl.seg (load cell traces)"

#pull off vertical reference phone
bmrg $PRFX $odmin $odmax 1 4 4 1>/dev/null
mv bmrg.seg refv.seg
echo "created refv.seg (vertical reference traces) "

#pull off radial   reference phone
bmrg $PRFX $odmin $odmax 1 5 5 1>/dev/null
mv bmrg.seg refr.seg
echo "created refr.seg (radial   reference traces) "

#pull off transverse reference phone
bmrg $PRFX $odmin $odmax 1 6 6 1>/dev/null
mv bmrg.seg reft.seg
echo "created reft.seg (transverse reference traces)"

#pull off vertical down-hole phone
bmrg $PRFX $odmin $odmax 1 1 1 1>/dev/null
mv bmrg.seg swcv.seg
echo "created swcv.seg (vertical swc phone traces) "

#pull off radial   down-hole phone
bmrg $PRFX $odmin $odmax 1 2 2 1>/dev/null
mv bmrg.seg swcr.seg
echo "created swcr.seg (radial   swc phone traces) "

#pull off transverse down-hole phone
bmrg $PRFX $odmin $odmax 1 3 3 1>/dev/null
mv bmrg.seg swct.seg
echo "created swct.seg (transverse swc phone traces)"

echo done