Thread: Source of Phase Picks

Started: 2023-05-29 15:00:57
Last activity: 2023-06-02 17:08:36
Topics: Wilber Help
Bradford Mack
2023-05-29 15:00:57
Hello,

I recently obtained phase picks from Wilber for several small events in 2016 and 2017. I am exclusively using the USGS experimental debris flow flume networks ZK (2016) and YV (2017). Oftentimes the picks don't seem to line up with any clear signal, so I was wondering if they were manually picked or auto-generated from a regional velocity model. I cannot find any information about the source of the picks on Wilber and can't imagine somebody went through and manually picked all of these events on these experimental networks. Is there any way to get more information about the source of the picks? Here is an example event that I'm looking at which uses the ZK network https://ds.iris.edu/wilber3/find_stations/9369790.

Thank you,

Brad Mack
Ph.D. Student
Co-President - Dr. A.N.V. Rao Gurukulam Program
Co-President - Bright Young Minds Alliance
University of South Florida


  • Adam Clark
    2023-06-02 17:08:36
    Hello Brad,

    These phase picks are based on theoretical travel times, generated by the
    TauP library: http://www.seis.sc.edu/TauP/

    These may not match local conditions, but should not be too far off. It's
    more common that the signal at a particular location isn't distinct enough
    to be distinguished above the noise.

    Cheers,
    Adam




    On Fri, Jun 2, 2023 at 4:53 PM Bradford Mack (via IRIS) <
    wilber-help-bounce<at>lists.ds.iris.edu> wrote:

    Hello,



    I recently obtained phase picks from Wilber for several small events in
    2016 and 2017. I am exclusively using the USGS experimental debris flow
    flume networks ZK (2016) and YV (2017). Oftentimes the picks don’t seem to
    line up with any clear signal, so I was wondering if they were manually
    picked or auto-generated from a regional velocity model. I cannot find any
    information about the source of the picks on Wilber and can’t imagine
    somebody went through and manually picked all of these events on these
    experimental networks. Is there any way to get more information about the
    source of the picks? Here is an example event that I’m looking at which
    uses the ZK network https://ds.iris.edu/wilber3/find_stations/9369790.



    Thank you,



    Brad Mack

    Ph.D. Student

    Co-President – Dr. A.N.V. Rao Gurukulam Program

    Co-President – Bright Young Minds Alliance

    University of South Florida



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