GG 6220
Sprint Semester, 2005

How to Run Reflectivity

 

The latest version of crfl is compiled for the fast run option.  The following is a more complete list of how the program and its auxiliaries should be run. Note that your runs may take several (tens) of minutes, so to start out with the simplest model to get acquainted with the program.

 

1) Describe model and recording geometry in data set: crfl.dat

    (see crfl.doc for help)

 

2) Type:  crfl

 

    This runs the program.  Typical outputs created are:

                            crfl.out  (a listing of run)

                            crfl.psv  (seismic traces)

 

 

3) Type: crfl2segy

 

    This runs the conversion program to SEGY format.  The input

    will typically be crfl.psv data set.  The output will be

    synth.ver data set (has SEGY formatted traces).

 

4) Type: zplot

 

    This is an interactive plotting package that lets you see the

    traces.

 

    Use the mouse to select synth.ver from file menu.

 

    Use the mouse to select SEGY from the format menu.

 

    Use the mouse to select range of traces, samples

 

    Use the mouse to select plot amplitudes

 

    Use the mouse to select display (watch out: some times

    the defaults are invalid and must be specified)

 

    Use the mouse to make a hard copy if you wish

         Use print menu.  Select save print file on disk.

         Then use lpr -Pmooselw plotname

 

 

How to Run SEGY programs

  • trafil====>band pass filter
  • dump======>dumps SEGY headers to listing
  • traequ====>trace equalization
  • traplt====>line printer plot of trace and spectrum

    •  

    TRAFIL:

    1) Type: trafil

    2) enter data set name to be filtered at prompt (ie. synth.ver)

        (this must be a SEGY format dataset)

    3) enter order of filter (minimum of 2)

    4) enter center frequency in Hz.

    5) enter bandwidth in Hz.

    6) view new data set with zplot  ======>trafil.segy

     

    DUMP:

    1) Type: dump

    2) enter data set name

    3) browse listing =====>dump.tmp using vi or more command

     

    TRAPLT:

    1) Type: traplt

    2) enter data set name

    3) enter time gate

    4) enter trace number

    5) enter zero time (with respect to gate start time) for

         a phase reference for frequency spectrum plot.

    6) browse listing====> traplt.tmp  using vi or more command

     

    TRAEQU:

    1) Type: traequ

    2) enter data set name

    3) enter equalization time gate (start, end times)

    4) view data with zplot (new data set name is traequ.segy)

     

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    This page was last modified Mar 6 2007.
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