MLOC rderr File

~.rderr File

A ~.rderr file is produced by every run of mloc. The file is written by the module mlocout_rderr.f90. It carries the calculation of empirical reading error and baseline offset (from the theoretical travel time) for every station-phase pair that has two or more unflagged instances in the inversion. There is no choice in the first run of a sequence but to use the default values for reading errors, or else run with weighting off (command weig), but it is normal practice to begin using the estimates of empirical reading error from the previous run (command rfil) very soon in the subsequent runs.

~.rderr files are not normally inspected by the user, so there are no headings for the columns:

Hypocentroid:     38.413    44.339    14.739
BAK          Pn         9     2.204     2.213     2.301    40.372    49.818     4.674    63.543
KSA          Pn         7     1.277     2.073     1.270    33.823    35.890     8.227   238.737
FEO          Pn         3     0.240     1.429     1.489    45.019    35.390     9.394   317.476
SEV          Pn         2    -0.367     4.005     4.026    44.545    33.668    10.077   310.824
HLW          Pn         8     0.071     1.129     1.146    29.858    31.342    13.725   235.434
SAM          P         12    -0.103     1.033     0.981    39.673    66.990    17.638    78.809
SAM          S          4    -0.539     3.564     1.685    39.673    66.990    17.638    78.809
LVV          S         12    -1.101     4.421     4.538    49.819    24.031    18.445   314.722
TAS          P         25     3.081     1.551     1.570    41.329    69.286    19.351    73.466
BEO          P         11     3.447     1.090     1.155    44.809    20.471    18.921   297.351
BEO          S          5     6.008     1.588     1.685    44.809    20.471    18.921   297.351
BUD          P         35     4.603     1.606     1.587    47.484    19.024    20.555   304.305
BUD          S          2     5.934     0.102     0.150    47.484    19.024    20.555   304.305
ANR          P         19     3.823     0.614     0.740    40.755    72.360    21.689    74.957

The first line in the file carries the hypocentroid’s latitude, longitude and depth, for use in the plot type known as an empirical path anomaly plot implemented by command epap. The remainder of the file is simply the sequence of station-phase pairs for which an empirical reading error could be calculated, in the order in which they are encountered in the event data files.

The columns are:

  • Station code (followed by deployment code if that is being used, see command radf)
  • Phase
  • Number of samples
  • Baseline offset from the theoretical travel-time model
  • Empirical reading error calculated from this run
  • Reading error used in this run
  • Latitude of the station
  • Longitude of the station
  • Epicentral distance from the hypocentroid
  • Azimuth, hypocentroid to station

The last four columns are used to make an empirical path anomaly plot (command epap).

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