= Format of the output parameter files (evt-Files) = The evt-file contains all available phase picks and analysis parameters of th SHM program. It is a plain text file and is pretty good self-explaining. It has one information per line with the general format {{{ : }}} == Used available parameters == Station code:: name of the station where a phase pick was made. Taken from trace when phase pick is done. Possible values: text string of maximum length 10. Onset time:: time of phase pick. Taken from trace where phase pick is done. Possible values: absolute time in [ShmDocTimeFormat SH time format] Onset type:: type of phase onset. Taken from phase dialog box. Possible values: keywords 'emergent', 'impulsive'. Phase name:: name of picked phase. Taken from phase dialog box. Possible values: text string of maximum length 20. Sign:: sign of first onset of specified phase. Taken from phase dialog box. Possible values: keywords 'positive', 'negative'. Component:: component where phase was picked. Taken from trace where phase pick is done. Possible values: single character. Period (sec):: dominant period of phase in s. Measured via amplitude/period menu entries (e.g. [ShmDocMenuAmplitudeAmplitudePeriodAutoPeak Ampl & Period auto Peak]). Possible values: floating point number. Amplitude (nm):: estimated displacement amplitude of measured signal in nm. The determined signal amplitude is divided by the amplitude transfer function of the recording equipment at the signal period. Measured via amplitude/period menu entries. Possible values: floating point number. Amplitude Time (sec):: time (s) relative to phase pick where amplitude was measured. Determined via amplitude/period menu entries. Possible values: floating point number. Vel. Amplitude (nm/sec):: estimated velocity amplitude of measured signal in nm/s. The determined signal amplitude is divided by the amplitude transfer function of the recording equipment at the signal period. Measured via amplitude/period menu entries. Possible values: floating point number. BB amplitude (nm/sec):: broadband amplitude in nm/s measured on unfiltered broadband records. Measured via amplitude/period menu entries. Possible values: floating point number. BB period (sec):: signal period in s. Measured via amplitude/period menu entries on unfiltered broadband records. Possible values: floating point number. Beam-Slowness (sec/deg):: slowness of phase in s/deg (modulus of horizontal slowness vector) measured using array algorithms ([ShmDocMenuArrayPlaneWave Plane Wave], [ShmDocMenuArrayFk FK]). Possible values: floating point number. Beam-Azimuth (deg):: azimuth of phase in deg (complementary to Beam-Slowness) measured using array algorithms. Possible values: floating point number. Epi-Slowness (sec/deg):: corrected slowness in s/deg (modulus of horizontal slowness vector) of phase computed via [ShmDocMenuArrayCalibration Calibration] menu entry. Used on P phases for location purposes. Possible values: floating point number. Epi-Azimuth (deg):: corrected azimuth of phase in deg (complementary to Epi-Slowness). Possible values: floating point number. Distance (deg):: epicentral distance in deg. Computed in location programs. Possible values: floating point number. Distance (km):: epicentral distance in km. Computed in location programs. Possible values: floating point number. Quality number:: phase quality number between 1 (=bad) and 9 (=good). Taken from phase dialog box. Possible values: integer numbers 1 to 9. Magnitude ms:: magnitude ms computed via magnitude menu entries. Possible values: floating point number. Magnitude mb:: magnitude mb computed via magnitude menu entries. Possible values: floating point number. Magnitude ml:: magnitude ml computed via magnitude menu entries. Possible values: floating point number. Magnitude mw:: magnitude mw. Possible values floating point number. Broadband Magnitude:: broadband magnitude computed via magnitude menu entries. Possible value: floating point number. User Magnitude:: user defined magnitude value. Not used by SHM. Possible values: floating point number. User Magn. Description:: Description text to above user magnitude. Possible values: text string of maximum length 40. Source Region:: name of epicentral region. Usually computed in location programs. Possible values: text string of maximum length 80. Comment:: arbitrary text to comment an event. Possible values: text string of arbitrary length. Latitude:: epicentre latitude in deg. Computed in location programs. Possible values: floating point number. Longitude:: epicentre longitude in deg. Computed in location programs. Possible values: floating point number. Location method:: which algorithm used to get location. Set by location program. Possible values: keywords 'array beam (calibrated)', 'array beam (uncorrected)', 'array beam (resid. corr.)', 'hypoellipse', 'locsat', 'hypocenter', 'hypo71', 'hyposat', 'relative travel times', 'external'. Location quality:: describes quality of location. Taken from parameter box. Possible values: keywords 'too weak', 'incoherent', 'no bearing', 'region', 'reliable'. Velocity model:: velocity model used for location of epicentre. Possible values: text string of maximum length 40. Location Input Params:: additional input parameters for external location programs. Possible values: text string of maximum length 80. Applied filter:: filter applied to trace when phase pick was done. Possible values: text string of maximum length 80. Depth (km):: source depth in km. Computed in location programs or set by user. Possible values: floating point number. Depth type:: type of depth given. Possible values: keywords '(n) preset', '(g) estimated', '( ) free', '(?) poorly constrained', '(*) less well constrained', '(d) reliable'. Origin time:: origin time of event. Computed by location programs. Possible values: absolute in SH time format. Event ID:: unique event ID assigned automatically by SHM in menu entry [ShmDocMenuWorkFinalParameters Final Parameters]. Possible values: integer number. Weight:: phase weight derived from phase quality number. Meanwhile obsolete. Possible values: integer numbers 1 to 4. Reference Latitude:: latitude in deg of reference point (used in array location method). Possible values: floating point number. Reference Longitude:: longitude in deg of reference point (used in array location method). Possible values: floating point number. Reference Location Name:: name of reference location (reference station name). Possible values: text string of maximum length 10. Analyst:: initials of analyst. Prompted at startup of SHM if requested. Possible values: text string of maximum length 10. No. of Stations used:: number of stations used in location. Set in location programs. Possible values: integer number. Region Table:: name of region table used. Possible values: keywords 'Flinn-Engdahl', 'GEO_REG', 'SEIS_REG'. Region ID:: ID number of source region. Computed in location programs. Possible values: integer number. Event Type:: type of event analysed. Taken from phase dialog box. Possible values: keywords 'teleseismic quake', 'nuclear explosion', 'regional quake', 'local quake', 'quarry blast', 'mining event'. Source of Information:: agency reporting the event, taken from menu entry [ShmDocMenuWorkInfoSource Info Source]. Possible values: text string of maximum length 10. Ampl&Period Source:: where the amplitude measurement was done. Possible values: keywords 'direct', 'beam trace', 'align trace'. Onset Window Left:: time resolution of onset pick. SHM allows the specification of onset time errors. This specifies the left inaccuracy time window in s relative to pick. Possible values: floating point number. Onset Window Right:: time resolution of onset pick. SHM allows the specification of onset time errors. This specifies the right inaccuracy time window in s relative to pick. Possible values: floating point number. Error in Latitude (km):: location error in km in latitude direction. Computed by the location program. Possible values floating point number. Error in Longitude (km):: location error in km in longitude direction. Computed by the location program. Possible values floating point number. Error in Depth (km):: depth error in km. Computed by the location program. Possible values: floating point number. Error in Origin Time:: origin time error ins. Computed by location program. Possible values: floating point number. Error Ellipse Major:: error ellipsis major axis in km. Computed by the location program. Possible values: floating point number. Error Ellipse Minor:: error ellipsis minor axis in km. Computed by the location program. Possible values: floating point number. Error Ellipse Strike:: strike angle of error ellipsis in deg. Computed by location program. Possible values: floating point number. Max Azimuthal Gap (deg):: maximum azimuthal gap in observing stations. Possible values: floating point number. RMS of Residuals (sec):: root mean square of time residuals quantifying the location fit. Possible values: floating point number. Phase Flags:: flags set on phase. Possible values: text string of maximum length 6. Signal/Noise:: signal to noise ratio, determined with S/N menu entries. Possible values: floating point number. Residual Time:: residual time of phase in s. Computed by location programs. Possible values: floating point number. Residual Correction:: empirical corrections to residual times (experimental). Possible values: floating point number. Pick Type:: type of phase pick. Possible values: keywords 'manual', 'automatic', 'theoretical'. == Unused parameters == LP component:: not used. Possible values: single character. LP period (sec):: not used. Possible values: floating point number. LP amplitude:: not used. Possible values: floating point number. Onset Accuracy:: not used. Possible values: keywords 'seconds', 'milliseconds'. Corner Frequency:: not used. Possible values: floating point number. Low Frequency Level:: not used. Possible values: floating point number. Moment Tensor Elements:: not used. Possible values: text string of maximum length 80. Moment Tensor Descr.:: not used. Possible values: text string of maximum length 80. Scalar Moment:: not used. Possible values: floating point number. Fault Plane Solution:: not used. Possible values: text string of maximum length 80. FPS Description:: not used. Possible values: text string of maximum length 80. back to [ShmDocIndex documentation index]