******************************************************************************************** Doing Time domain Full Waveform Inversion ... Parameters of Inversion are as follows: Nx = 510 Nz = 134 dx = 10m dz = 10m Nt = 3000 dt = 0.001s Npml = 50 f0 = 10 Nshot = 1 Iteration number = 1 ******************************************************************************************** Calculating the observed data... Calculating the observed data used: 53s Doing the 0th iteration Calculating the Gradient... Objective function value: 59202.1 Step length: 152.931 The 0th iteration used 174s Writing data to .sgy zheshi duo pao