28.6 COMP_HYP, compare hypocenters of two Nordic files

This program is similar to COMPARE_HYP, but simpler, in that it compares two Nordic files and writes out differences. Typical application is that one wishes to see how changes in velocity model, station coordinates, software version, format changes etc affect the location results. Here is an example of how the program runs:

  Program to compare hypocenters from two Nordic files 
  Name of first Nordic file, reference data 
select.out
  Name of second Nordic file 
hyp.out
  Enter minimum numbers to select event with significant change : distance (km)/depth (km)/rms
10 10 .5
 2021  1 1 17 3 56.3 LQ 78.559 -18.893 15.0F BER 10 .90 3.9wBER         3.2LNAO
 2021 0101 1703 56.4 LQ 78.555 -18.862 15.0F BER 10 1.6 3.9wBER         3.2LNAO
 change epicentre,depth,rms:     0.8  0.0   0.7
 2021  1 3 1842  9.5 LQ 77.328   7.938 24.2  BER 10 .70 3.3wBER         2.3LNAO
 2021 0103 1842 09.5 LQ 77.328   7.938 24.2  BER 10 1.3 3.3wBER         2.3LNAO
 change epicentre,depth,rms:     0.0  0.0   0.6
 2021  113 2025 25.8 LQ 73.515   7.829 27.3  BER 12 .50 3.5wBER         2.6LNAO
 2021 0113 2025 25.8 LQ 73.515   7.829 27.3  BER 12 1.2 3.5wBER         2.6LNAO
 change epicentre,depth,rms:     0.0  0.0   0.7
 2021  113 2224 34.1 LQ 73.592   7.963 10.0F BER 36 1.0 4.0wBER         3.1LNAO
 2021 0113 2224 34.1 LQ 73.592   7.963 10.0F BER 36 1.5 4.0wBER         3.1LNAO
 change epicentre,depth,rms:     0.0  0.0   0.5
 2021  114  012 53.6 LQ 73.617   8.383 10.0F BER 30 1.2 3.8wBER         3.1LNAO
 2021 0114 0012 53.6 LQ 73.618   8.387 10.0F BER 30 2.0 3.8wBER         3.1LNAO
 change epicentre,depth,rms:     0.2  0.0   0.8
 2021  114  025  1.8 LQ 79.718   3.795 23.0  BER 13 1.0 3.8wBER         3.3LNAO
 2021 0114 0025 01.8 LQ 79.718   3.795 23.0  BER 13 1.7 3.8wBER         3.3LNAO
 change epicentre,depth,rms:     0.0  0.0   0.7
 2021  117 1229  3.1 LQ 73.454   7.847 10.0F BER 22 .90 3.9wBER         3.1LNAO
 2021 0117 1229 03.1 LQ 73.454   7.847 10.0F BER 22 1.5 3.9wBER         3.1LNAO
 change epicentre,depth,rms:     0.0  0.0   0.6
 2021  122  4 8  6.1 LQ 77.441   7.562 19.1  BER  8 .80 3.6wBER         2.3LNAO
 2021 0122 0408 06.1 LQ 77.441   7.562 19.1  BER  8 1.4 3.6wBER         2.3LNAO
 change epicentre,depth,rms:     0.0  0.0   0.6
 2021  122  424 24.6 LQ 77.404   7.517 22.7  BER  9 .60 3.7wBER         2.7LNAO
 2021 0122 0424 24.6 LQ 77.404   7.517 22.7  BER  9 1.2 3.7wBER         2.7LNAO
 change epicentre,depth,rms:     0.0  0.0   0.6
 2021  124  7 3  0.3 LQ 73.522   7.917 10.0F BER 20 .90 3.9wBER         2.2LNAO
 2021 0124 0703 00.3 LQ 73.522   7.917 10.0F BER 20 1.6 3.9wBER         2.2LNAO
 change epicentre,depth,rms:     0.0  0.0   0.7
End of s-file
 the standard deviation of the difference to the  reference for the 3 parameters is:    epicenter:    0.87   depth:        1.25   rms:          0.39

 Number of events in input file          34
 Output file names are: 
     comp_hyp.out: list with changes of all events
     comp_hyp_change.out: list of events that changed
     comp_hyp_events_changed.out: nordic format
     comp_hyp_events_unchanged.out: nordic format

In this example the files select.out and hyp.out were compared. A number of output files are generated.



Peter Voss : Fri Nov 12 10:33:10 UTC 2021