Perform relocation

Given the three input files

• Parameter file in YAML format 3_input_params/input_params_loc.yaml.
• True model file in HDF5 format 2_models/model_ckb_N61_61_61.h5.
• Traveltime data file in TEXT format OUTPUT_FILES/OUTPUT_FILES_signal/src_rec_file_forward_errloc.dat.

users can perform inversion by

mpirun -n 8 TOMOATT -i 3_input_params/input_params_loc.yaml

The results are output to the folder OUTPUT_FILES/OUTPUT_FILES_loc.

• The relocated earthquakes and synthetic traveltimes can be found as OUTPUT_FILES/OUTPUT_FILES_loc/src_rec_file_reloc_0201.dat.
• The relocated earthquakes and updated observed traveltimes can be found as OUTPUT_FILES/OUTPUT_FILES_loc/src_rec_file_reloc_0201_obs.dat.

Some remarks about relocation

1. Using different types of data

In the default parameter file 3_input_params/input_params_loc.yaml, only absolute traveltimes are involoved in the relocation process by setting

relocation: # update earthquake hypocenter and origin time (when run_mode : 2 and 3)
  
  ...
 
  # -------------- using absolute traveltime data --------------
  abs_time:
    use_abs_time : true # 'yes' for using absolute traveltime data to update ortime and location; 'no' for not using (no need to set parameters in this section)
 
  # -------------- using common source differential traveltime data --------------
  cs_dif_time:
    use_cs_time : false # 'yes' for using common source differential traveltime data to update ortime and location; 'no' for not using (no need to set parameters in this section)
 
  # -------------- using common receiver differential traveltime data --------------
  cr_dif_time:
    use_cr_time : false # 'yes' for using common receiver differential traveltime data to update ortime and location; 'no' for not using (no need to set parameters in this section)
 

Users can change the options use_abs_time, use_cs_time, use_cr_time to include absolute traveltimes and/or common-source differential arrival times and/or common-receiver differential arrival times.

2. Important settings about relocation