| | \n\n \n \n\n \n \n \n avg=false | \twhether use average value of gamma \n | \n \n\n \n \n\n \n \n\n \n \n \n compen=false | \tcompensate attenuation, only works if mode=0,1 (viscoacoustic) \n | \n \n\n \n \n\n \n \n\n \n \n \n cutoff=250. | \tcutoff frequency \n | \n \n\n \n \n \n dt= | \ttime step \n | \n \n\n \n \n \n eps=1.e-4 | \ttolerance \n | \n \n\n \n \n \n file fft= | \tauxiliary input file name \n | \n \n\n \n \n\n \n \n \n file left= | \tauxiliary output file name \n | \n \n\n \n \n \n mode=0 | \tmode of propagation: 0 is viscoacoustic (default); 1 is loss-dominated; 2 is dispersion dominated; 3 is acoustic \n | \n \n\n \n \n\n \n \n\n \n \n\n \n \n\n \n \n \n npk=20 | \tmaximum rank \n | \n \n\n \n \n \n rev=false | \treverse propagation \n | \n \n\n \n \n \n seed=time(NULL | \t \n | \n \n\n \n \n \n sign=0 | \tsign of solution: 0 is positive, 1 is negative \n | \n \n\n \n \n \n taper=0.2 | \ttaper ratio for tukey window \n | \n \n\n \n \n \n vmax=6000. | \tmaximum velocity \n | \n \n\n \n \n \n w0= | \treference frequency \n | \n \n |