sfsimivscan (2.0-git)
index
system/seismic/Msimivscan.c
Velocity analysis using similarity-weighted semblance.

 
Synopsis
        sfsimivscan ref=ref.rsf < cmp.rsf > scan.rsf offset=offset.rsf mask=msk.rsf grad=grd.rsf semblance=n diffsemblance=n avosemblance=n nb=2 weight=y half=y smax=2.0 ns=1 slowness=n squared=n v1= extend=4 mute=12 str=0.5 thr=0.3 eps=0.01 niter=10 v0= dv= nv= v1= type=

 
Parameters
       
 
bool avosemblance=n [y/n]
if y, compute AVO-friendly semblance
 
bool diffsemblance=n [y/n]
if y, compute differential semblance
 
float dv=
step in velocity
 
float eps=0.01

 
int extend=4
trace extension
 
string grad=
auxiliary input file name
 
bool half=y [y/n]
if y, the second axis is half-offset instead of full offset
 
string mask=
optional mask file (auxiliary input file name)
 
int mute=12
mute zone
 
int nb=2
semblance averaging
 
int niter=10

 
int ns=1
number of heterogeneity scans
 
int nv=
number of scanned velocities
 
string offset=
auxiliary input file name
 
file ref=
auxiliary input file name
 
bool semblance=n [y/n]
if y, compute semblance; if n, stack
 
bool slowness=n [y/n]
if y, use slowness instead of velocity
 
float smax=2.0
maximum heterogeneity
 
bool squared=n [y/n]
if y, the slowness or velocity is squared
 
float str=0.5
maximum stretch allowed
 
float thr=0.3

 
string type=
type of semblance (avo,diff,sembl,power,weighted)
 
float v0=
first scanned velocity
 
float v1=
reference velocity
 
bool weight=y [y/n]
if y, apply pseudo-unitary weighting

 
Used In
       

 
TCCS
        vscan/bei
vscan/hw
vscan/stack
vscan/synth

 
UH
        avostack/synh
avostack/synl