Thread: Reference of corrlelate

Started: 2017-10-23 05:20:51
Last activity: 2017-10-23 17:45:48
Topics: SAC Help
Guilherme de Melo
2017-10-23 05:20:51
Hello!

Does anyone know the bibliographic reference of the cross correlation
method used by the SAC in the correlate command?

Regards,

Guilherme de Melo

--
Guilherme Weber Sampaio de Melo
Master's seismology research - UFRN/BR

  • George Sand França
    2017-10-23 06:30:56
    Guilherme,

    The best book is The Seismic Analysis Code: A Primer and User's Guide
    By George Helffrich, James Wookey, Ian Bastow. There are good examples

    https://books.google.com.br/books/about/The_Seismic_Analysis_Code.html?id=LfyaAAAAQBAJ&source=kp_cover&redir_esc=y


    sincerely
    ---
    Prof. George Sand L. A. de França
    Observatório Sismológico
    Instituto de Geociências
    Universidade de Brasília
    +55 61 31071298
    www.obsis.unb.br [1]
    www.intrasis.unb.br/sand [2]

    Em 2017-10-22 23:21, GUILHERME De MELO escreveu:

    Hello!

    Does anyone know the bibliographic reference of the cross correlation method used by the SAC in the correlate command?

    Regards,

    Guilherme de Melo
    --

    Guilherme Weber Sampaio de Melo
    Master's seismology research - UFRN/BR

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  • Brian Savage
    2017-10-23 17:45:48
    Guilherme,

    The correlate function in sac does the computation in the frequency domain; it is a standard methodology. See https://en.wikipedia.org/wiki/Cross-correlation

    The only complication is the use of multiple time windows with possible overlap to perform the computation.

    References:
    If you require a reference for citing, use the references from the README; see below. I would prefer to update these references as they are rather dated.

    If you require description of the correlation details, I would suggest looking at the source code in
    - src/dbh/crscor.c (Actual correlation function)
    - src/sam/xcorrelate.c (SAC function driver / option processing)

    Of course, you can ask me questions about any particular details of the processing.

    Cheers,
    Brian


    References:
    Goldstein, P., A. Snoke, (2005), "Sac Availability for the IRIS Community",
    Incorporated Institutions For Seismology Data Management Center Electronic
    Newsletter,
    http://ds.iris.edu/ds/newsletter/vol7/no1/sac-availability-for-the-iris-community/

    Goldstein, P., D. Dodge, M. Firpo, Lee Minner (2003), "SAC2000: Signal
    processing and analysis tools for seismologists and engineers", Invited
    contribution to "The IASPEI International Handbook of Earthquake and
    Engineering Seismology", Edited by WHK Lee, H. Kanamori, P.C. Jennings, and
    C. Kisslinger, Academic Press, London.


    On Oct 22, 2017, at 9:21 PM, GUILHERME De MELO <gwsmelo<at>ufrn.edu.br> wrote:

    Hello!

    Does anyone know the bibliographic reference of the cross correlation method used by the SAC in the correlate command?

    Regards,

    Guilherme de Melo

    --
    Guilherme Weber Sampaio de Melo
    Master's seismology research - UFRN/BR

    ----------------------
    SAC Help
    Topic home: http://ds.iris.edu/message-center/topic/sac-help/ | Unsubscribe: sac-help-unsubscribe<at>lists.ds.iris.edu

    Sent from the IRIS Message Center (http://ds.iris.edu/message-center/)
    Update subscription preferences at http://ds.iris.edu/account/profile/


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