SURELANAN - REsiduaL-moveout semblance ANalysis for ANisotropic media
surelan refl= npicks= [optional parameters]
Required parameters:
reflector file: reflec=
number of points in the reflector file=
Optional Parameters:
nr1=51 number of r1-parameter samples
dr1=0.01 r1-parameter sampling interval
fr1=-0.25 first value of r1-parameter
nr2=51 number of r2-parameter samples
dr2=0.01 r2-parameter sampling interval
fr2=-0.25 first value of r2-parameter
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
method=linear for linear interpolation of the interface
=mono for monotonic cubic interpolation of interface
=akima for Akima's cubic interpolation of interface
=spline for cubic spline interpolation of interface
Note:
1. This program is part of Debashish Sarkar's anisotropic model building
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 residual-moveout semblance for cdp gathers is based
on z(h)*z(h) = z(0)*z(0) + r1*h^2 + r2*h^4/[h^2+z(0)^2] where z
depth and h is the half-offset.