Example Log

The following log is for illustration, and is for a single source effort by a vertical source recorded on a file, c200.seg. In practice one would have many files, and the number of files will be set by the first and last file numbers.
 WARNING: !! 
 See Source Code, genbhodV.f, or BSU documentation 
 (man pages and BSU user Guide)                    
 before you use this program. It is hardwired for
 a specific type of acquisition.
  
 enter 1char_ALPHA PREFIX 
c
  enter FIRST FILE NUMBER (<=3digits)
200
  enter LAST FILE NUMBER (<=3digits)
200
  enter azimuth of bowspring(R-comp)
180
  OUTPUT====> Downhole: gobhodo
  OUTPUT====> Reference: gobhodoR
  OUTPUT====> Downhole: gorunbhod
  OUTPUT====> Reference: gorunbhodR
  ----------------------------------------
 REMEMBER to change permissions on the    
 above files to execute. 
  ----------------------------------------
  IF examining the Down-hole Phone        
                                          
  1. Run gobhodo in directory with 6 chan 
  records (3 down, 3 reference phones)    
                                          
  2. Run gorunbhod in directory with files
  that are named hxxx.seg                 
                                          
  ----------------------------------------
  IF examining the Reference Phone        
                                          
  1. Run gobhodoR in the directory with   
  the 6 channel records.                  
                                          
  2. Run gorunbhodR in the directory with 
  files that are named rxxx.seg           
    EXPERIMENTAL APPROACH on Rayleigh Wave
  ----------------------------------------

The gobhodo script scales the data (BSCL 12.0.10 by the maximum absolute value on traces 1 to 1 (ie. trace 1). The last option 3 sets the choice to maximum absolute value. The script is:

bscl c200.seg 1 1 3
mv  bsclc200.seg  h200.seg
The gorunbhod calls the BHOD 10.1.11 program:
bhod h200.seg 2 3 50 0.0 180.0 +90.0 The file bhod.lst contains the solution:
00200 263.0 353.0
(file number, R-azimuth, T-azimuth) The bhod.lst is input to program BTOR 12.2.2 which rotates the data and updates the headers.

Figure 60: BHOD: plot produced showing PCA results for a geophone at about 11.68 meters depth.
\includegraphics[scale=.55]{Figurebhodv.pdf}