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7.1.17 HYP output

Output from the program is a CAT-file (hyp.out) and the original HYPOCENTER print file (print.out) with more detailed information. The hyp.out file can be plotted directly using EPIMAP. In addition, there is also the HYPO71 style summary file, hypsum.out. NOTE: In print.out and hypsum.out, year is only given with 2 digits. Magnitude in hypsum.out and print.out are only coda magnitude and will be different from same magnitude in hyp.out if a magnitude correction has been used.

When HYP is executed from EEV, the print.out file has no station listing. In all other cases, there is a station listing.

Some explanation is given below, for details see HYP manual

The output in print.out first shows the content of the TEST parameters in the STATION0.HYP file. After that comes some routine output from the starting location algorithm. Then follows the output from the iterations, which should be self-explanatory. The location is then given on one line containing origin time, latitude longitude (deg min), depth, number of phases, the number of degrees of freedom in the spatial solution (maximum 3), rms damping and errors, error estimates, resolution matrix. Last are the station lines with the following abbreviations:

stn  : Station 
dist : Distance in km 
azm  : Azimuth at the source  
ain  : Angle of incidence at the source 
phs  : Phase specified by user
calcphs: Phase used by program
w    : Input weight 
hrmn : Hour minute 
t-sec: Arrival time sec 
t-obs: Observed travel time 
t-cal: Calculated travel time 
res  : Residual 
wt   : Weight usedi by program, normalized to 1.0
di   : importance of phase in %

A station weight wt=-1 means that the phase travel time could not be calculated. The output phases can be e.g. PN2, where 2 means that the phase calculated has been refracted in layer 2 and PN5 refracted in layer 5. The input phase is then just P and a local model is used.

Any change in the input phase ID is signified by an asterisk (*) before the phase ID.

If amplitudes are available, Ml, Mb. Mw or Ms will be calculated, and all stations calculating Ml, Mb, Mw or MS will additionally be displayed at the end of the interactive printout.

Change of day:

If the origin time of the located event occur on the day before the time in the header line, the time in the header line is changed to the previous day and all phase arrivals are changed accordingly. This means that some hour values will be more than 23 since phase arrival times refer to the main header.

Seismic moments etc: After locating an event, HYP will check if there is spectral information (Moment etc, see MULPLT) available in the S-file and average values will be calculated and written into the output file.

next up previous contents index
Next: 7.1.18 Problems Up: 7.1 The hypocenter program, Previous: 7.1.16 RESET TEST parameters   Contents   Index
Peter Voss : Tue Jul 2 07:59:27 UTC 2019