sffraclr2 (2.0-git)
index
user/jsun/Mfraclr2.cc
Complex lowrank decomposition for 2-D viscoacoustic isotropic wave propagation.

 
Synopsis
        sffraclr2 < vel.rsf fft=fft.rsf left=left.rsf > right.rsf seed=time(NULL eps=1.e-4 npk=20 dt= w0= rev=false mode=0 compen=false taper=0.2 cutoff=250. vmax=6000. sign=0 avg=false gamma= abc=0 nbt=0 nbb=0 nbl=0 nbr=0 ct=0.0 cb=0.0 cl=0.0 cr=0.0

 
Parameters
       
 
abc=0

 
avg=false
whether use average value of gamma
 
cb=0.0

 
cl=0.0

 
compen=false
compensate attenuation, only works if mode=0,1 (viscoacoustic)
 
cr=0.0

 
ct=0.0

 
cutoff=250.
cutoff frequency
 
dt=
time step
 
eps=1.e-4
tolerance
 
file fft=
auxiliary input file name
 
gamma=

 
file left=
auxiliary output file name
 
mode=0
mode of propagation: 0 is viscoacoustic (default); 1 is loss-dominated; 2 is dispersion dominated; 3 is acoustic
 
nbb=0

 
nbl=0

 
nbr=0

 
nbt=0

 
npk=20
maximum rank
 
rev=false
reverse propagation
 
seed=time(NULL

 
sign=0
sign of solution: 0 is positive, 1 is negative
 
taper=0.2
taper ratio for tukey window
 
vmax=6000.
maximum velocity
 
w0=
reference frequency

 
Used In
       

 
TCCS
        fraclapl/diffq
fraclapl/marmq
gmresq/bpgas
gmresq/exploding