Program sflsrtm2d | 2-D zero-offset least-squares reverse time migration (LSRTM)
[SYNOPSIS]
sflsrtm2d < data.rsf > imag.rsf vel=modl.rsf n0=0 verb=n niter=10 tol=1.e-12
[PARAMETERS]
int     | n0 | =0 |   | 	shot depth in the grid 
int     | niter | =10 |   | 	totol number of least-squares iteration
float   | tol | =1.e-12 |   | 	tolerance of inversion 
file    | vel | = |   | 	auxiliary input file name
bool    | verb | =n |  [y/n] | 	verbosity 
[DIRECTORY]
user/pyang
