Program sfpetscawefd2d | Implicit solution of 2-D acoustic wave equation, compatibility interface with sfawefd2d 
[SYNOPSIS]
sfpetscawefd2d < Fwav.rsf vel=Fvel.rsf sou=Fsou.rsf rec=Frec.rsf wfl=Fwfl.rsf > Fdat.rsf den=Fden.rsf verb=n snap=n free=n expl=n dabc=n jdata=1 jsnap=nt nqz=sf_n (az) nqx=sf_n (ax) oqz=sf_o (az) oqx=sf_o (ax)
[PARAMETERS]
bool    | dabc | =n |  [y/n] | 	absorbing BC 
file    | den | = |   | 	auxiliary input file name
bool    | expl | =n |  [y/n] | 	"exploding reflector" 
bool    | free | =n |  [y/n] | 	free surface flag 
int     | jdata | =1 |   | 	
int     | jsnap | =nt |   | 	
int     | nqx | =sf_n (ax) |   | 	
int     | nqz | =sf_n (az) |   | 	
float   | oqx | =sf_o (ax) |   | 	
float   | oqz | =sf_o (az) |   | 	
file    | rec | = |   | 	auxiliary input file name
bool    | snap | =n |  [y/n] | 	wavefield snapshots flag 
file    | sou | = |   | 	auxiliary input file name
file    | vel | = |   | 	auxiliary input file name
bool    | verb | =n |  [y/n] | 	verbosity flag 
file    | wfl | = |   | 	auxiliary output file name
[DIRECTORY]
user/petsc
