NAME
asig1d - computes complex signal attributes
SYNOPSIS
asig1d [ -Nfile_in ] [ -Ofile_out ] [ -rsstart_record ] [
-reend_record ] [ -nsstart_trace ] [ -neend_trace ] [
-IEfile_ienv ] [ -IPfile_iphase ] [ -IFfile_ifreq ] [
-IBWfile_ibw ] [ -REfile_renv ] [ -RPfile_rphase ] [
-RFfile_rfreq ] [ -RBWfile_rbw ] [ -RTfile_risetime ] [
-Cfile_carrier ] [ -Sfile_skewness ] [ -P0file_phase0 ] [
-P90file_phase90 ] [ -V ] [ -? ]
DESCRIPTION
asig1d reads in a dataset and outputs the attribute
corresponding to each trace.
asig1d gets all its parameters from command line arguments.
These arguments specify the input, output, and attribute(s)
to compute.
-N file_in
Enter the input data set name or file immediately after
typing -N. This input file should include the complete
path name if the file resides in a different directory.
Example -N/export/data2/san_juan/taup_file tells the
program to look for file 'taup_file' in directory
'/export/data2/san_juan'.
-O file_out
Enter the output multi-attribute data set name or file
immediately after typing -O. Attributes will be output
back to back, line by line, with the instanteous
envelope attribute (if -IE is entered) first, the
instantanous phase attribute (if -IP is entered)
second, the instantaneous frequency attribute (if -IF
is entered) third, etc. This output file name is not
required when piping the output to another process.
-rs rs
Enter the desired starting record number. If no entry,
program assumes first record in data set.
-re re
Enter the desired final record number. If no entry,
program assumes last record in data set.
-ns ns
Enter the desired starting trace number. If no entry,
program assumes first trace in each record.
-ne ne
Enter the desired final trace number. If no entry,
program assumes last trace in each record.
-IE file_ienv
Enter -IE followed by the instantaneous energy (ampli-
tude) file name to output this attribute to a separate
file. If -IE is entered with no file name, this attri-
bute will be directed to the file or pipe defined by
the -O option above.
-IP file_iphase
Enter -IP followed by the instantaneous phase file name
to output this attribute to a separate file. If -IP is
entered with no file name, this attribute will be
directed to the file or pipe defined by the -O option
above. The phase will range between 0 and 180 degrees.
-IF file_ifreq
Enter -IF followed by the instantaneous frequency file
name to output this attribute to a separate file. If
-IF is entered with no file name, this attribute will
be directed to the file or pipe defined by the -O
option above. The frequency will be truncated to fall
between 0 Hz and Nyquist (1./(2.*dt)).
-IBW file_ibw
Enter -IBW followed by the instantaneous bandwidth file
name to output this attribute to a separate file. If
-IBW is entered with no file name, this attribute will
be directed to the file or pipe defined by the -O
option above.
-RE file_renv
Enter -RE followed by the response energy (amplitude)
file name to output this attribute to a separate file.
If -RE is entered with no file name, this attribute
will be directed to the file or pipe defined by the -O
option above.
-RP file_rphase
Enter -RP followed by the response phase file name to
output this attribute to a separate file. If -RP is
entered with no file name, this attribute will be
directed to the file or pipe defined by the -O option
above. The phase will range between 0 and 180 degrees.
-RF file_rfreq
Enter -RF followed by the response frequency file name
to output this attribute to a separate file. If -RF is
entered with no file name, this attribute will be
directed to the file or pipe defined by the -O option
above. The frequency will be truncated to fall between
0 Hz and Nyquist (1./(2.*dt)).
-RBW file_rbw
Enter -RBW followed by the response bandwidth file name
to output this attribute to a separate file. If -RBW is
entered with no file name, this attribute will be
directed to the file or pipe defined by the -O
option above.
-RL file_rlength
Enter -RL followed by the response length file name to
output this attribute to a separate file. If -RL is
entered with no file no file name, this attribute will
be directed to the file or pipe defined by the -O
option above.
-C file_carrier
Enter -C followed by the carrier file name to output
this attribute to a separate file. If -C is entered
with no file name, this attribute will be directed to
the file or pipe defined by the -O option above.
-S file_skewness
Enter -S followed by the skewness file name to output
this attribute to a separate file. If -S is entered
with no file name, this attribute will be directed to
the file or pipe defined by the -O option above.
-RT file_risetime
Enter -RT followed by the rise time file name to output
this attribute to a separate file. If -RT is entered
with no file name, this attribute will be directed to
the file or pipe defined by the -O option above.
-P0 file_phase0
Enter -P0 followed by the 0 degree phase decomposition
file name to output the decomposition calculation to a
separate file. If -P0 is entered with no file name,
this attribute will be directed to the file or pipe
defined by the -O option above.
-P90 file_phase90
Enter -P90 followed by the 90 degree phase decomposi-
tion file name to output the decomposition calculation
to a separate file. If -P90 is entered with no file
name, this attribute will be directed to the file or
pipe defined by the -O option above.
-V Enter the command line argument '-V' to get additional
printout.
-? Enter the command line argument '-?' to get online
help. The program terminates
after the help screen is printed.
See Also:
semb3d, asig, XIKP, lm3dvtosis, sistolm3dv
REFERENCES:
Taner, M. T., Koehler, F. and Sheriff, R. E., 1979, Complex
seismic trace analysis, Geophysics, 44, 1041-1063.
Cohen and Lee, 1993, Proc. IEEE Int. Conf. Acoust. Speech,
Signal Proceesing.
Marfurt, K.J., Kirlin, R.L., Bahorich, M.S, and Farmer,
S.F., 1994, 3D seismic attributes using a running window
semblance technique. Geoscience Research Bulletin (in
press).
Bohorich, M.S. and Farmer, S.L. (1992) The seismic sequence
attribute map, Geos cience Research Note GRN9205.
Bohorich, M.S. and Farmer, S.L. (1994) 3D seismic coherency
for faults and strat igraphic features, Geoscience Research
Note GRN9408.
CONTRACT AGREEMENT
This product is brought to you by Research Agreement #548
(The Seismic Coherency Cube). Thank you for your support.
AUTHOR
Kurt. J. Marfurt (E&PTG, Tulsa, OK, USA) Built on earlier
work (program asig) by John Bodine and Don Wagner. Modified
by Kelly D. Crawford (E&PTG, Tulsa, OK, USA) to work on
individual traces.
COPYRIGHT
copyright 2001, Amoco Production Company
All Rights Reserved
an affiliate of BP America Inc.
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