Thread: Slowness & Headers

Started: 2006-10-26 18:29:41
Last activity: 2006-10-26 18:29:41
Topics: SAC Help
Anna M. Courtier
2006-10-26 18:29:41

Hi,

I'm trying to store a slowness value into one of the SAC header user fields
to be used later for binning. I was hoping to use the value calculated in
TauP for the event distance/depth specific to each trace and then store it
in the header. I saw the man page on 'traveltime' but am not sure if I can
extend this to slowness or how to implement it (preferably in the macro I
am using to pick arrival times and cut traces, etc).

Can this be done? If so, what is the best approach? I am using sac2000
SEISMIC ANALYSIS CODE [07/21/2003 (Version 00.59.46)] on Solaris.

Thanks,
ANNA


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Anna M. Courtier
Geology and Geophysics
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Phone: 612-624-8557

  • Renate Hartog
    2006-10-26 17:04:35
    Hi Anna,

    TauP has a utility called taup_setsac, it inserts a theoretical travel
    time in the t0-t9 sac header values, and at the same time it inserts the
    corresponding ray parameters (slownesses) in user0-user9. I've never used
    it for this latter purpose, but assume it works. The taup documentation
    should help you further if you want to try it.

    Renate
    PNSN/UW seismology


    On Thu, 26 Oct
    2006, Anna M. Courtier wrote:


    Hi,

    I'm trying to store a slowness value into one of the SAC header user fields
    to be used later for binning. I was hoping to use the value calculated in
    TauP for the event distance/depth specific to each trace and then store it in
    the header. I saw the man page on 'traveltime' but am not sure if I can
    extend this to slowness or how to implement it (preferably in the macro I am
    using to pick arrival times and cut traces, etc).

    Can this be done? If so, what is the best approach? I am using sac2000
    SEISMIC ANALYSIS CODE [07/21/2003 (Version 00.59.46)] on Solaris.

    Thanks,
    ANNA




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