MB-System Unix Manual Page: mbsegyinfo

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    mbsegyinfo
    Section:  MB-System 5.0  (1)
    Updated:  3 June 2013
    Index

    NAME

    mbsegyinfo - Output some basic statistics of segy format seismic data files.

    VERSION

    Version 5.0

    SYNOPSIS

    mbsegyinfo [-Ifilename -Llonflip -O -H -V]

    DESCRIPTION

    MBsegyinfo is a utility for reading a segy format seismic data file
    or files and outputting some basic statistics.  The table generated
    shows the filename, data counts, navigation totals, time and navigation
    of the first and last data records, minimum and maximum
    data values, and the geographic bounding box of the data.

    An important function  of mbsegyinfo is to generate segy
    information, or ".sinf"
    files, that may be parsed by other MB-System programs
    and macros. To create an ".sinf" file, simply direct the
    output of mbsegyinfo to a file named by adding the
    suffix ".sinf" to the input swath data filename. The
    -O option accomplishes this same task
    automatically.

    AUTHORSHIP

    David W. Caress (caress@mbari.org)

      Monterey Bay Aquarium Research Institute

    Dale N. Chayes (dale@ldeo.columbia.edu)

      Lamont-Doherty Earth Observatory

    OPTIONS

    -H

    This "help" flag cause the program to print out a description
    of its operation and then exit immediately.
    -I

    filename

    Sets the input segy seismic data filename. Default: infile = "stdin".
    -L

    lonflip

    Sets the range of the longitude values returned.
    If lonflip=-1 then the longitude values will be in
    the range from -360 to 0 degrees. If lonflip=0
    then the longitude values will be in
    the range from -180 to 180 degrees. If lonflip=1
    then the longitude values will be in
    the range from 0 to 360 degrees.
    Default: mbsegyinfo selects the bext longitude range based
    on the first data.
    -O

    This option causes the program output to be directed to
    ".sinf" files rather than to stdout. Each ".sinf" file is named
    using the original data file path with an ".sinf" suffix appended.
    -V

    Normally, mbsegyinfo only prints out the statistics obtained
    by reading all of the data.  If the
    -V flag is given, then mbsegyinfo works in a "verbose" mode and
    outputs the program version being used and all read error status messages.

    EXAMPLES

    Suppose one wishes to know something about the contents of
    a segy subbottom profiler data file named 20040722_152111.s7k.segy.
    The following will suffice:

            mbsegyinfo -I 20040722_152111.s7k.segy

    and returns the following output:

            SEGY Data File:      20040722_152111.s7k.segy

            File Header Info:

              Channels:                          1

              Auxiliary Channels:                0

              Sample Interval (usec):           64

              Number of Samples in Trace:     8330

              Trace length (sec):         0.533120

              Data Format:                IEEE 32 bit integer

              CDP Fold:                          0

            Data Totals:

              Number of Traces:               2527

              Min Max Delta:

                Shot number:                    56     2582     2527

                Shot trace:                      1        1        1

                RP number:                      56     2582     2527

                RP trace:                        1        1        1

                Delay (sec):              0.000000 0.000000 0.000000

                Range (m):                0.000000 0.000000 0.000000

                Receiver Elevation (m):   -224.030000 -2.860000 -221.170000

                Source Elevation (m):     -224.030000 -2.860000 -221.170000

                Source Depth (m):         2.860000 224.030000 -221.170000

                Receiver Water Depth (m): 51.510000 487.670000 -436.160000

                Source Water Depth (m):   51.510000 487.670000 -436.160000

            Navigation Totals:

              Start of Data:

                Time:  07 22 2004 15:20:37.029000  JD204

                Lon: -121.8573     Lat:   36.7755

              End of Data:

                Time:  07 22 2004 15:44:15.438000  JD204

                Lon: -121.8572     Lat:   36.7952

            Limits:

              Minimum Longitude:    -121.8574   Maximum Longitude:    -121.8572

              Minimum Latitude:       36.7755   Maximum Latitude:       36.7952

    SEE ALSO

    mbsystem(1), mbextractsegy(1), mbsegylist(1), mbsegygrid(1),
    SIOSEIS(http://sioseis.ucsd.edu/ )

    BUGS

    Maybe. Depends on who's asking...

     Index

    NAME
    VERSION
    SYNOPSIS
    DESCRIPTION
    AUTHORSHIP
    OPTIONS
    EXAMPLES
    SEE ALSO
    BUGS

Last Updated: 3 June 2013

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