groups:homestake:meetings:20170223 [School of Physics and Astronomy Wiki]

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Homestake Meeting Minutes, 02/23/17

Attending: Vuk, Daniel, Gary, Levi, Pat, Victor, Andrew, Ross

Agenda:

  * Data analysis topics
    * Gary: working with Ross on the catalog, processed 500 events, trying to fit the events in some plane-wave stacking techniques. Breaking the data between surface, mid, and deep stations. Trying different groupings, not ready to show results yet. May yield a figure or two about how events look like for the overview paper. 
    * Pat: working on the radiometer, making it more flexible. Mostly working, still have some bugs with signs etc, working on it. 
    * Pat: also working on parameter estimation, using Tanner's code and a new code - they don't agree yet, working on it. 

  * Papers
    * Homestake Array Summary paper {{:groups:homestake:meetings:paper.pdf|pdf}}
      * Leads: Vuk, Gary, Victor
      * Others: all
      * Vuk presented a draft, attached above, which is still missing components.
      * Gary: can add how large the tides look like in this data, to illustrate how good the data is.
      * Victor: should discuss authorship.
      * Vuk: could put first the people who lead any given paper. 
      * Gary: should make part 1 and part 2 papers, where the active measurements should be described in a separate paper. There are aspects about the sensor deployment that were learned, and could be lost in a long paper. 
      * Gary/Victor: Seism. Research Lett. would be a good place for this paper(s). Editors are encouraging this type of letters. Not sure what length constraints are, but Gary thinks 2-3 pages is what he has seen. 
      * SRL: https://www.seismosoc.org/publications/srl/srl-authorsinfo/#submitting
      * It looks like 6000 words, 10 figures. 
      * Decided: there will be a second overview paper on active excitation experiments, Gary will take the lead.
      * Daniel: have a topographical plot, could try to add drifts. Vuk will send some plots of the drifts. 
      * Gary: could add a movie in the supplement to the paper, potentially with particle motions. 
      * Daniel: will play around with power spectra and how they vary as a function of depth, maybe stacking stations from different levels. Will try to make a figure about that.
      * Goal: try to have a reasonably mature draft by next meeting.
 

    * Active excitation overview paper
      * Leads: Gary, Ross
      * Others: Victor, Daniel,...

    * Surface Active Excitation
      * Leads: Victor, Boise
      * Others: Gary, Ross

    * Underground Active Excitation:
      * Lead: Gary, Ross

    * Parameter estimation for the Rayleigh and Love eigenfunctions (amplitude vs depth dependence). 
      * Leads: Pat, Daniel 
      * Also contributing: Victor, Vuk, Levi

    * Estimating directional and modal composition of the seismic noise. (Pat, Levi, Vuk)
      * Leads: Pat, Vuk, Levi

    * Wiener filter application 
      * Leads: Jan, Michael

    * Teleseismic EQs and near-surface scattering 
      * Leads: Daniel, Victor
      * Conference in April, Daniel would like to show some preliminary results then, turn into paper thereafter

    * Time-variable velocity changes 
      * Lead: Victor, not started yet

    * Very low frequency harmonics (Ross)
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