BVEL

This program can apply a correctional velocity to a down-hole data set. See BRED 7.0.1 for the same process on surface data. The command line arguments are:

  bvel infile  vel  ifast 
 infile:   =input file name 
 vel       =phase velocity to apply 
 ifast     0=slow option (fft phase rotation
           1=fast option (sample shift) 
Example:
bvel twave.seg 500. 1

Figure 25: BVEL: Data flattened on 500 m/s (direct wave in bedrock). Overburden is slower (about 100 m/s). Reflection off top of bedrock shown.