This is a parameter file for a 2-layer model with free-surface 2 1 6 1 32.0 0.008 20 0.1 2: two domains; 1: one source; 6: six elements per wavelength; 1: ? 32.0: lengh of time T; 0.008: dt; 20: appended twenty elements on right and left edges for damping; 0.1: coefficent for damping
2.0 1.0 0.0 3.0 0.5 0.5 2.0: ?; 1.0: central frequency of ricker; 0.0: mininum frequency; 3.0: max frequency; 0.5: length of element for minium frequency; 0.5: length of element for max frequency The number of frequenceis is determined by: df = 1/T; In this example, T is abit larger than 32s, T=4096 * 0.008; 4096=2^12
2 -100.0 840.0 3 5.0 90.0 0.0 2: number of sources (the max can not exceed nfs); -100: x of source; 840: y of source; 3: explorational source, type of source 5.0, 90.0, 0.0: parameter for double couple source.
161 (number of receivers) init (output file of all frequencies) initu.dat (output file of ux) initw.dat (output file of uy) domain 1 2.3 5.2 3.0 27 1: NO. of domain; 2.3: pho; 5.2: vp; 3.0: vs; 27: number of coords bellow
1 23 24 27 1 23: up boundary of domain 1; 24 27: bottom boundary of domain 1;
1 80.0 0.00 0 2 40.0 0.00 0 3 39.5 0.0308 0 4 39.0 0.1224 0 5 38.5 0.2725 0 6 38.0 0.4775 0 7 37.5 0.7322 0 8 37.0 1.0305 0 9 36.5 1.3650 0 10 36.0 1.7275 0 11 35.5 2.1089 0 12 35.0 2.5000 0 13 34.5 2.8911 0 14 34.0 3.2725 0 15 33.5 3.6350 0 16 33.0 3.9695 0 17 32.5 4.2678 0 18 32.0 4.5225 0 19 31.5 4.7275 0 20 31.0 4.8776 0 21 30.5 4.9692 0 22 30.0 5.00 0 23 -60.0 5.00 0 24 -60.0 30.0 0 25 30.0 30.0 0 26 40.0 30.0 0 27 100.0 30.0 0 domain 2 2.5 7.6 5.0 2 1 2 3 4 1 2: up boundary of domain 2 (which should be consist with bottom boundary of domain 1 and is ignore in calculation); 3 4: bottom boundary of domain 2
1 60.0 0.0 0 2 -10.0 0.0 0 3 -10.0 30.0 0 4 -09.0 30.0 0 cccccccccccccccccccccccccccccccccccccc