bvel - BSU program which time aligns data with a correctional velocity (linear)
bvel [ -h | infile | vel | ifast ]
Basic Seismic Utilities (BSU) for applying a correctional velocity to down-hole or Vertical Seismic Profile (VSP) data. Alignment shifts pivot on the most distant offset. The correction is linear with respect to the vertical projection of range, straight line ray path being assumed. Correctional velocity is assumed constant over the interval. One use of this program is to observe a correctional velocity determined by program bvas. To velocity align surface data, see program bred.
Options
|
-h |
Online help giving details on command line arguments | ||
|
infile |
Input file name | ||
|
vel |
Correctional velocity. In zones where this is the actual velocity, waveform data will be aligned on a constant arrival time. | ||
|
ifast |
Switch which selects method. |
0=slower option, uses FFT and does it by phase rotation in frequency domain
1=faster execution, uses an interpolation-resample method, time domain
NOTE:
If invoked with no options, will prompt user for input
parameters.
EXAMPLE:
bvel w001.seg 400.0 1
File w001.seg has a 400 m/s correctional velocity applied in the time domain.
bvelxxxx.seg
Named according to convention (first 4char bvel, the next 4char are the first 4char of the input file name, suffix .seg)
standard output
produces a progress bar
bvelxxxx.lst
echo check of input parameters and list of time shifts.
bhelp(1), bvas(1)
No known bugs
Copyright © 2024 by Paul Michaels
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.
P. Michaels, PE. <[email protected]>