SYNOPSIS
PERL PROGRAM NAME:
AUTHOR: Juan Lorenzo (Perl module only)
DATE:
DESCRIPTION:
Version:
USE
NOTES
Examples
SYNOPSIS
SEISMIC UNIX NOTES DZDV - determine depth derivative with respect to the velocity ",
parameter, dz/dv, by ratios of migrated data with the primary
amplitude and those with the extra amplitude
dzdv <infile afile=afile dfile=dfile>outfile [parameters]
Required Parameters:
infile= input of common image gathers with primary amplitude
afile= input of common image gathers with extra amplitude
dfile= output of imaged depths in common image gathers
outfile= output of dz/dv at the imaged points
nx= number of migrated traces
nz= number of points in migrated traces
dx= horizontal spacing of migrated trace
dz= vertical spacing of output trace
fx= x-coordinate of first migrated trace
fz= z-coordinate of first point in migrated trace
off0= first offset in common image gathers
noff= number of offsets in common image gathers
doff= offset increment in common image gathers
cip=x1,z1,r1,..., cip=xn,zn,rn description of input CIGS
x x-value of a common image point
z z-value of a common image point at zero offset
r r-parameter in a common image gather
Optional Parameters:
nxw, nzw=0 window widths along x- and z-directions in
which points are contributed in solving dz/dv.
Notes:
This program is used as part of the velocity analysis technique developed
by Zhenyue Liu, CWP:1995.
Author: CWP: Zhenyue Liu, 1995
Reference:
Liu, Z. 1995, "Migration Velocity Analysis", Ph.D. Thesis, Colorado
School of Mines, CWP report #168.
User's notes (Juan Lorenzo) untested
CHANGES and their DATES
Import packages
instantiation of packages
Encapsulated hash of private variables
sub Step
collects switches and assembles bash instructions by adding the program name
sub note
collects switches and assembles bash instructions by adding the program name
sub clear
sub afile
sub cip
sub dfile
sub doff
sub dx
sub dz
sub fx
sub fz
sub infile
sub noff
sub nx
sub nz
sub nzw
sub off0
sub outfile
sub get_max_index
max index = number of input variables -1