BSHF

All samples move in time by a constant shift. The shift in seconds is either in the header for first break pick, or in a separate file. See Figure 87 for the example.

  BSHF infile ipic ishf tshift picfil
  
  infile:   =input file name 
  ipic:    1=static shift data by picks pick file
           0=static shift data by picks in headers
  ishf:    0=add static shifts 
           1=subtract static shifts 
  tshift:   =bulk static to add to picks 
  picfil:  =file name with picks (for ipic=0)

Figure 87: BGAZ: (A) Gained down-hole data, blue=direct wave, red=reverberating reflections (B) BSHF: Data flattened on down-going wave.