| | \n\n \n \n \n float alpha=1.0e-2 | \tsource parameter \n | \n \n\n \n \n \n float beta=1.0 | \tsource parameter \n | \n \n\n \n \n \n float dt= | \ttime step \n | \n \n\n \n \n \n file mslt= | \tauxiliary output file name \n | \n \n\n \n \n \n int nt= | \tnumber of time step \n | \n \n\n \n \n \n float slx=nx*dx*0.5 | \tcenter of source location: x \n | \n \n\n \n \n \n float slz=nz*dz*0.5 | \tcenter of source location: z \n | \n \n |