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# Hypoinverse Station File Format

    FORMAT OF THE NEW HYPOINVERSE STATION FILE FOR FULL 10-LETTER STATION NAMES

    The station code consists of a 5-letter site code, a 2-letter network
    code unique to the owner or operator of the network, and a 3-letter
    component or channel code.  The net and component fields are optional,
    but space for these fields will be reserved in all input and output
    files.  The user of Hypoinverse may specify (with the LET command) how
    many characters (counted from the left side) in each field to use when
    matching names in station and phase files.  Full use of the fields will
    require 5, 2 and 3 letters; minimum use will require 3, 0 and 0
    letters.  Hypoinverse uses both a 1-letter (old style) and 3-letter
    (new style) component field.  Space for both fields will be reserved in
    all input and output files.  Select whether to use the 1- or 3-letter
    field for matching station and phase names with the LES command.  It is
    useful to keep the 1-letter component field for easier recognition by
    analysts than the newer, more general 3-letter field.

    Cols.   Format	Data
    _____   ______ 	____

    1-5	A5,1X	Station  site  code.   The first character may  not  be  a
    		number or the $ character.

    7-8	A2,1X	Optional station network code

    10	A1	Optional 1-letter component code for this station site.
    11-13	A3,1X	Optional 3-letter component code for this station site.

    15 	A1	Station weight code (in units of 0.1) by which the weights
     		assigned each P & S phase  are  to be multiplied.  Use the
    		digits  0-9  for the weight in tenths; "*" or "0"  for  no
    		weight; or any other character  (including blank) for full
    		weight.

    16-17	I2, 1X	Latitude, degrees.
    19-25	F7.4	Latitude, minutes.
    26	A1	N or blank for north latitude, S for south.
    27-29	I3, 1X	Longitude, degrees.
    31-37	F7.4	Longitude, minutes.
    38	A1	W or blank for west longitude, E for east.

    39-42	4X	Reserved for elevation in m. Not used by HYPOINVERSE.

    43-45	F3.1,2X	Default  period  (in sec) at which the  maximum  amplitude
      		will be read for this station. If period is given on phase
    		card, it overrides this value.

    48      A1          Put  a "2" or "A" here to designate this as  an  alternate
                        crust model station.  Both  alternate  and primary crustal
                        models  must be in use.  Stations may also be  tagged  for
                        use with an alternate model in the delay file.

    49      A1          Optional station remark field to copy to print output.
    50-54   F5.2, 1X    P delay (sec) for delay set 1.
    56-60   F5.2, 1X    P delay (sec) for delay set 2.
    62-66   F5.2        Amplitude magnitude correction.  If in the range +2.4, the
                                                                         _
                        correction is included  (by  addition)  in  the  amplitude
                        magnitude, If you don't want a station's magnitude used in
                        the event magnitude, use  a  correction  of  5.0  plus the
                        actual correction or assign a zero weight (see below).

    67      A1          Amplitude magnitude weight code.  Codes 0-9, "*" and blank
                        are the same as the P & S weight codes.  The actual weight
                        used  is  the product of those on the  station  and  phase
                        cards.

    68-72   F5.2        Duration  magnitude  correction  (works  the  same  as the
                        amplitude magnitude correction).

    73      A1          Duration  magnitude  weight code (works the  same  as
                        the amplitude weight code).

    74      I1          Instrument  type code for this station used to select  the
                        appropriate response curve  to  derive  an equivalent Wood
                        Anderson amplitude. Must be either 0, 1 or 2:
                            0: Standard Wood-Anderson torsion seismograph.
                            1: USGS standard (1 HZ geophone, .7 critical damping.)
                            2: Hawaii-type Sprengnether seismometer.

    75-80   F6.2        Calibration factor for amplitude  magnitudes, equal to the
                        peak-to-peak  amplitude of a 10 microvolt RMS signal at  5
                        hz  applied  to  the  VCO   and  measured  in  mm  on  the
                        Develocorder  film  viewer.  For instrument types 0 and  2
                        this  should  generally  be  1.0.   A  cal  factor  of 0.0
                        signifies  an  unknown  response for  which  no  amplitude
                        magnitudes will be computed. If a cal factor is given on a
                        phase  card it overrides this value.  The VCO  attenuation
                        may be given in  place  of  the  cal  factor  (see the ATN
                        command).  An entire history of station attenuations  with
                        the  dates  of  attenuation  changes  may  be  read from a
                        separate file with the ATE command.

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- Binder Configuration File Commands
- Eqproc Configuration File Commands
- Eqprelim Configuration File Commands
- Earthworm Module Index