~.dcal_phase_data File
A ~.dcal_phase_data file is written whenever the dcal command has been issued to perform a direct calibration analysis. While writing the standard ~.phase_data output file, the ~.dcal_phase_data file is created by writing to a separate file any reading within the epicentral distance range specified for the estimation of the hypocentroid (command hlim). It is written from the module mlocout_phase_data.f90.
The format of the ~.dcal_phase_data file is very similar to that of the parent ~.phase_data file but the header section for each event is simplifed to one line with the event number, event name and a note about the focal depth and how it was set:
STA NETWORK PHASE READ DELTA AZIM RAY WGT STA P RESIDUALS FOR ITERATION # CODE ERR PARAM CORR *INP* *0* *1* *2* *3* *4* DTMPH DTMPC ECI AUTHOR CHA PHASE0 MNF IDIF CLUSTER EVENT 1 19300506.2234.23 GOOD DATA Depth = 8.0, fixed, from depth phases CLUSTER EVENT 2 19300508.1535.24 GOOD DATA Depth = 15.0, fixed, from cluster default depth CLUSTER EVENT 3 19340222.0807.13 GOOD DATA Depth = 15.0, fixed, from cluster default depth CLUSTER EVENT 4 19401018.1225.44 GOOD DATA Depth = 15.0, fixed, from cluster default depth CLUSTER EVENT 5 19520930.0250.40 GOOD DATA Depth = 7.0, fixed, from depth phases CLUSTER EVENT 6 19581026.1240.30 GOOD DATA Depth = 15.0, fixed, from cluster default depth CLUSTER EVENT 7 19670517.0428.50 GOOD DATA Depth = 7.0, fixed, from depth phases CLUSTER EVENT 8 19700314.0151.43 GOOD DATA Depth = 10.0, fixed, from depth phases CLUSTER EVENT 9 19740308.0848.16 GOOD DATA Depth = 15.0, fixed, from cluster default depth CLUSTER EVENT 10 19740312.0653.50 GOOD DATA Depth = 15.0, fixed, from cluster default depth
All events are reported, even if they do not have any readings that were used for direct calibration, as in this example. This cluster (in the vicinity of Salmas, Iran) contains an unusual number of older events that are well connected by regional and teleseismic stations to the modern events that carry the data used for direct calibration:
CLUSTER EVENT 53 20060526.1459.30 GOOD DATA Depth = 17.0, fixed, from near-source readings ISHB Pg 0.59 0.46 105 18.1 1.00 0.13 -0.1 0.10 0.43 0.30 0.1078 0.0253 1.52 UTIG S Z Pg 21 0 ISHB Pg 0.59 0.46 105 18.1 1.00 0.13 0.4 0.00 0.33 0.20 0.1078 0.0253 1.35 ISC Pg 26 0 IMRD Pg 0.39 0.59 58 18.5 1.00 0.10 0.5 -0.04 0.22 0.23 0.2817 0.0986 0.68 UTIG S Z Pg 16 0 ITBZ Sg 0.94 0.88 101 29.6 1.00 0.18 0.0 -0.23 0.47 0.30 0.0438 0.0227 -0.52 UTIG S N Sg 23 0 ITBZ Pg 0.41 0.88 101 17.1 1.00 0.13 -0.3 -0.29 0.02 -0.09 0.0713 0.0479 1.04 ISC Pg 30 0 ITBZ Pg 0.41 0.88 101 17.1 1.00 0.13 0.1 -0.18 0.12 0.01 0.0713 0.0479 1.29 UTIG S Z Pg 22 0 MAKU Pg 0.70 1.00 343 17.1 1.00 0.10 0.7 0.01 -0.38 -0.25 0.1174 0.0366 1.12 ISC B Z Pg 32 0 IAZR Pg 0.45 1.03 134 17.1 1.00 0.18 0.2 0.05 0.23 0.04 0.0160 0.0586 -1.00 UTIG S Z Pg 7 0 CLUSTER EVENT 54 20060609.1801.24 GOOD DATA Depth = 12.0, fixed, from near-source readings HAKT Sg 1.68 0.08 213 19.5 1.00 0.49 -0.9 1.34 1.12 1.02 0.0295 0.0296 -0.23 ISC Sg 8 0 HAKT Pg 0.98 0.08 213 11.3 1.00 0.30 -2.1 0.42 0.24 0.15 0.0343 0.0212 0.27 ISC Pg 7 0 CUKT Pg 0.59 0.40 198 18.4 1.00 0.06 -1.9 1.15 0.96 0.84 0.0139 0.2987 0.37 ISC Pg 10 0 VANT Pg 0.74 0.89 334 19.0 1.00 0.04 -2.6 -0.41 -0.60 -0.60 0.0199 0.0765 -1.35 ISC Pg 12 0 TVAN Sg 0.95 0.95 343 32.9 1.00 0.12 -1.6 -0.44 -0.64 -0.59 0.0488 0.1523 -0.32 ISC Sg 14 0 CLUSTER EVENT 55 20060729.0151.11 GOOD DATA Depth = 19.0, fixed, from local-distance readings ISHB Pg 0.59 0.63 102 17.1 1.00 0.18 0.3 -0.10 0.24 0.07 0.1078 0.0364 1.20 UTIG S Z Pg 14 0 ISHB Sg 1.13 0.63 102 29.6 1.00 0.26 0.0 -0.59 -0.09 -0.33 0.0893 0.0208 -0.68 UTIG S E Sg 15 0 ISHB Pg 0.59 0.63 102 17.1 1.00 0.18 -0.5 -0.20 0.14 -0.03 0.1078 0.0364 1.04 ISC Pg 20 0 IMRD Pg 0.39 0.74 66 17.1 1.00 0.17 -0.2 -0.11 0.02 -0.09 0.2817 0.0880 0.06 UTIG S Z Pg 12 0 MAKU Pg 0.70 0.94 353 17.1 1.00 0.10 -1.2 0.09 -0.13 -0.12 0.1174 0.0400 1.32 IIEES B Z Pg 23 0 CLDR Pg 0.41 1.02 316 17.1 1.00 0.16 -2.6 0.14 -0.10 -0.06 0.0422 0.0711 0.47 ISC Pg 26 0 ITBZ Pg 0.41 1.05 100 17.1 1.00 0.13 0.2 -0.18 0.14 -0.03 0.0713 0.0707 1.20 UTIG S Z Pg 16 0 ITBZ Pg 0.41 1.05 100 17.1 1.00 0.13 -1.3 -0.28 0.04 -0.13 0.0713 0.0707 0.95 ISC Pg 25 0 VANB Pg 0.45 1.12 275 17.1 1.00 0.10 -2.6 0.99 0.90 0.91 0.1329 0.0958 0.10 ISC Pg 33 0 TVAN Pg 1.51 1.12 276 17.1 1.00 0.16 -2.3 0.97 0.87 0.88 0.0587 0.0084 0.84 ISC Pg 30 0 IAZR Pg 0.45 1.17 129 17.1 1.00 0.18 -2.2 -0.75 -0.32 -0.52 0.0160 0.1115 -2.07 ISC S Z Pg 28 0 IAZR Pg 0.45 1.17 129 17.1 1.00 0.18 -2.3 -0.85 -0.42 -0.62 0.0160 0.1115 -2.29 ISC Pg 29 0
The format for individual readings is identical to that used in the ~.phase_data file, but headers are deleted to improve readability.
Like the ~.phase_data file the ~.dcal_phase_data file is divided into “good” data and “bad” data sections. Here is the “bad” data for the three events shown above:
CLUSTER EVENT 53 20060526.1459.30 BAD DATA Depth = 17.0, from near-source readings ISHB d Pg 0.59 0.46 105 18.1 1.00 0.13 0.5 0.10 0.43 0.30 ISC S Z Pg 25 0 IMRD d Pg 0.39 0.59 58 18.5 1.00 0.10 1.5 -0.04 0.22 0.23 ISC S Z Pg 27 0 ITBZ d Pg 0.41 0.88 101 17.1 1.00 0.13 -0.2 -0.18 0.12 0.01 ISC S Z Pg 28 0 ITBZ d Sg 0.94 0.88 101 29.6 1.00 0.18 1.0 -0.33 0.37 0.20 ISC Sg 31 0 ITBZ d Sg 0.94 0.88 101 29.6 1.00 0.18 1.1 -0.23 0.47 0.30 ISC S N Sg 29 0 IAZR d Pg 0.45 1.03 134 17.1 1.00 0.18 -1.3 0.05 0.23 0.04 ISC S Z Pg 33 0 CLUSTER EVENT 54 20060609.1801.24 BAD DATA Depth = 12.0, from near-source readings HAKT d Pg 0.98 0.08 213 11.3 1.00 0.30 -2.1 0.36 0.18 0.09 ISC Pg 9 0 CUKT x Sg 1.09 0.40 198 31.9 1.00 0.04 -0.1 2.69 2.47 2.32 ? ISC Sg 11 0 TVAN x Pg 1.51 0.95 343 19.0 1.00 0.05 -3.9 -1.45 -1.62 -1.63 ? ISC Pg 13 0 CLUSTER EVENT 55 20060729.0151.11 BAD DATA Depth = 19.0, from local-distance readings ISHB d Pg 0.59 0.63 102 17.1 1.00 0.18 -0.4 -0.10 0.24 0.07 ISC S Z Pg 18 0 ISHB d Sg 1.13 0.63 102 29.6 1.00 0.26 0.8 -0.59 -0.09 -0.33 ISC S E Sg 19 0 ISHB d Sg 1.13 0.63 102 29.6 1.00 0.26 0.7 -0.69 -0.19 -0.43 ISC Sg 21 0 IMRD d Pg 0.39 0.74 66 17.1 1.00 0.17 0.1 -0.11 0.02 -0.09 ISC S Z Pg 22 0 CLDR x Sg 0.70 1.02 316 29.6 1.00 0.24 -0.4 1.92 1.43 1.55 ? ISC Sg 27 0 ITBZ d Pg 0.41 1.05 100 17.1 1.00 0.13 -1.2 -0.18 0.14 -0.03 ISC S Z Pg 24 0 VANB x Sg 0.50 1.12 275 29.6 1.00 0.14 -1.3 3.39 3.16 3.23 ISC Sg 34 0 TVAN x Sg 0.95 1.12 276 29.6 1.00 0.23 1.0 4.61 4.37 4.44 ISC Sg 31 0
Most of the entries are duplicate readings (flag = “d”), and there are a few outlier readings, flagged with “x”. In several cases, marked with “?” in the “WHY BAD” column, the algorithm has suggested that it may be wise to check a reading (with rstat) that is close enough to the “good” readings for that station-phase that it might deserve to be added back into the inversion.