Program sfimagsrc | Convolution with a Ricker wavelet. 
[SYNOPSIS]
sfimagsrc < in.rsf > out.rsf frequency= freq=0.2
[PARAMETERS]
float   | freq | =0.2 |   | 	peak frequency for Ricker wavelet (as fraction of Nyquist) 
float   | frequency | = |   | 	peak frequency for Ricker wavelet (in Hz) 
[DIRECTORY]
user/jsun
