Program sfnorsar | Traveltime and amplitude estimation using wavefront construction. 
[SYNOPSIS]
sfnorsar < inp.rsf ampl=ampl.rsf time=time.rsf dirx=dirx.rsf dirz=dirz.rsf srcx=srcx.rsf srcz=srcz.rsf invgeo=invgeo.rsf nang=10 rays=0 wfront=0 gap=1 inter=1 DSmax=5 dt=0.0005 nt=5 nrmax=2000 lomx=1 first=1 nou=6 gnx=nx gnz=nz gdx=dx gdz=dz gox=ox goz=oz N=3 TETAMAX=1.5 alpha2=4.0 freq=100. prcube=0 pr=0 ds=1. os=0. depth=dz
[PARAMETERS]
float   | DSmax | =5 |   | 	Maximum distance between contiguos points of a wavefront 
int     | N | =3 |   | 	Number of control points 
float   | TETAMAX | =1.5 |   | 	Truncation parameter 
float   | alpha2 | =4.0 |   | 	Width of gaussian weighting function 
file    | ampl | = |   | 	auxiliary output file name
float   | depth | =dz |   | 	Depth location of sources 
file    | dirx | = |   | 	auxiliary output file name
file    | dirz | = |   | 	auxiliary output file name
float   | ds | =1. |   | 	interval between sources 
float   | dt | =0.0005 |   | 	time step 
int     | first | =1 |   | 	Obtain first arrivals only 
float   | freq | =100. |   | 	Pseudo-frequency of waverays 
int     | gap | =1 |   | 	Draw wavefronts every gap intervals 
float   | gdx | =dx |   | 	
float   | gdz | =dz |   | 	
int     | gnx | =nx |   | 	Coordinates of output grid 
int     | gnz | =nz |   | 	
float   | gox | =ox |   | 	
float   | goz | =oz |   | 	GET LOMAX SPECIFIC PARAMETERS 
int     | inter | =1 |   | 	If use linear interpolation 
file    | invgeo | = |   | 	auxiliary output file name
int     | lomx | =1 |   | 	Use Lomax's waveray method 
int     | nang | =10 |   | 	Number of take-off angles 
int     | nou | =6 |   | 	GET GRIDDING PARAMETERS 
int     | nrmax | =2000 |   | 	Maximum number of points that define a wavefront 
int     | nt | =5 |   | 	Number of time steps between wavefronts 
float   | os | =0. |   | 	first source location 
int     | pr | =0 |   | 	For debugging porpouses 
int     | prcube | =0 |   | 	For debugging porpouses 
int     | rays | =0 |   | 	If draw rays 
file    | srcx | = |   | 	auxiliary output file name
file    | srcz | = |   | 	auxiliary output file name
file    | time | = |   | 	auxiliary output file name
int     | wfront | =0 |   | 	If draw wavefronts 
[DIRECTORY]
user/urdaneta
