SYNOPSIS
PERL PROGRAM NAME:
AUTHOR: Juan Lorenzo (Perl module only)
DATE:
DESCRIPTION:
Version:
USE
NOTES
Examples
SYNOPSIS
SEISMIC UNIX NOTES SURELAN - compute residual-moveout semblance for cdp gathers based
on z(h)*z(h) = z(0)*z(0) + r*h*h where z depth and h offset.
surelan <stdin >stdout [optional parameters]
Optional Parameters:
nr=51 number of r-parameter samples
dr=0.01 r-parameter sampling interval
fr=-0.25 first value of b-parameter
smute=1.5 samples with RMO stretch exceeding smute are zeroed
dzratio=5 ratio of output to input depth sampling intervals
nsmooth=dzratio*2+1 length of semblance num and den smoothing window
verbose=0 =1 for diagnostic print on stderr
Note:
1. This program is part of Zhenyue Liu's velocity analysis technique.
2. Input migrated traces should be sorted by cdp - surelan outputs a
group of semblance traces every time cdp changes. Therefore, the
output will be useful only if cdp gathers are input.
3. The parameter r may take negative values. The range of r can be
controlled by maximum of (z(h)*z(h)-z(0)*z(0))/(h*h) 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 dr
sub dzratio
sub fr
sub nr
sub nsmooth
sub smute
sub verbose
sub get_max_index
max index = number of input variables -1