Parameters

Model parameters

• h = size of travel time basic cell, identical in the X, Y, and Z directions (km)
• magX = number of travel cells that a model cell has in the X direction
• magY = number of travel cells that a model cell has in the Y direction
• magZ = number of travel cells that a model cell has in the Z direction
• nx = number of model cells in the X direction (xlen = nx * magX * h)
• ny = number of model cells in the Y direction (ylen = ny * magY * h)
• nz = number of model cells in the Z direction (zlen = nz * magZ * h)
• baseElev = top of the model in km (negative if above sea level)
• xmin = left edge of the model in km (default = 0.0) (not implemented!)
• ymin = bottom edge of the model in km (default = 0.0) (not implemented!)

Input files

• srcfil = station file (it is called "src" because stations are treated as sources in main code)
• recvfil = source file (it is called "recv" because sources are treated as receivers in main code)
• obfile = arrival time file
• velfile = binary file containing input/initial P-wave velocity model
• velfile_s = binary file containing input/initial S-wave velocity model

Travel time parameters

• maxres = maximum P residual in seconds
• maxsres = maximum S residual in seconds

Inversion parameters

• invert = flag to invert for velocity model: 1 = true, 0 = false
• smoother = smoothing constraint (small for rough model, high for smooth model)
• ilsqr = maximum number of LSQR iterations
• max_cond_num = maximum condition number for LSQR
• truncater = SVD truncater
• UVout_flg = flag to dump Ritz vectors to obtain resolution matrix: 1 = true, 0 = false
• reortho_flg = flag to reorthog. Ritz vectors (if UVout_flg = 1): 1 = true, 0 = false

Earthquake parameters

• no_shots = flag to indicate that dataset contains no explosions: 1 = true (no explosions), 0 = false (explosions)
• no_earthq = flag to indicate that datasets contains no earthquakes: 1 = true (no earthquakes), 0 = false (earthquakes)
• min_z =

Vp/Vs parameters

• swave_flg = use S waves flag: 1 = true, 0 = false
• vps_ratio = Vp/Vs ratio (a priori?, use to regularize?)
• ps_wght_type = P/S wave weight flag: 0 = do not weight P and S residuals, 1 = weight based on variance, 2 = fixed weight
• ps_wght = weight to use when ps_wght_type = 2 p_res_var

Output files

• ttlog = flag to ouput file with computed travel times Traveltime.log: 1 = true, 0 = false
• eqinfo = flag to output file with hypocenter errors: 1 = true, 0 = false

To sort

• xwt =
• ywt =
• zwt =
• magz_u =
• z_u_lim =
• magz_l =
• z_l_lim =
• rel_only =
• loc_only =
• relative =
• maxOffset =
• minOffset =
• errlog =
• reslog =
• raylog =
• msd =
• interpolate =
• min_z =
• max_dh =
• max_dt =
• app_var =
• detail =
• det_z =
• det_magz =
• reduce =
• red_z =
• red_magx =
• red_magy =
• red_magz =
• variable_sm =
• auto_cov_lim =
• maxsmooth =
• minsmooth =
• maxcover =
• mincover =
• lnsmooth =
• Podvin_Lecomte =
• Podvin_Lecomte_msg =
• shotstat =
• max_stat =
• velzone =
• velzone_tres =
• vps_ratio =
• cross_grad =
• cross_grad_horiz =
• cross_grad_wght =
• use_pert_file =
• perturb_file =
• perturb_file_s =
• cross_grad_ext =
• cross_grad_ext_horiz =
• xg_ext_file =
• cross_grad_ex_wght =
• cross_grad_ext_ons =
• cross_grad_ex_inv =
• out_jacob =
• out_res =
• NETtomo =
• NETmodel =
• reg_only =
• loc_pdf_use =
• loc_pdf_name =
• loc_pdf_nx =
• loc_pdf_ny =
• loc_pdf_nz =
• loc_pdf_dx =
• loc_pdf_dy =
• loc_pdf_dz =
• vel_pdf_use =
• vel_pdf_name =
• vel_pdf_nx =
• vel_pdf_ny =
• vel_pdf_nz =
• vel_pdf_dx =
• vel_pdf_dy =
• vel_pdf_dz =