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| groups:homestake:meetings:20170323 [2017/03/23 11:06] – mandic | groups:homestake:meetings:20170323 [2017/03/23 12:18] (current) – mandic | ||
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| Homestake Meeting Minutes, 03/23/17 | Homestake Meeting Minutes, 03/23/17 | ||
| - | Attending: Andrew, Daniel, Pat, Ross, Levi, Vuk, Victor, Voon | + | Attending: Andrew, Daniel, Pat, Ross, Levi, Vuk, Victor, Voon, Gary |
| Agenda: | Agenda: | ||
| + | * Next Meeting: Apr 13 | ||
| * Data analysis topics | * Data analysis topics | ||
| * Data corrections, | * Data corrections, | ||
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| * Event catalog (Gary/ | * Event catalog (Gary/ | ||
| * Radiometer updates (Pat) {{: | * Radiometer updates (Pat) {{: | ||
| + | * Total recovered power (in P-experiment) is about 2x too low, and the amplitude in the 90% region is about 20% too low. But position recovered correctly. The issue might have to do with spectral leakage. | ||
| + | * When injecting/ | ||
| + | * Have to think more about assessing the significance of recovered peaks. | ||
| + | * Will look at the microseism band, since we can compare with the known directions. | ||
| + | * Try recovering with different combinations to gain experience with leakages etc. | ||
| + | * Also need to include the bi-exponential Radiometer model. With better model, maybe the leakage would be reduced. | ||
| + | * Diffraction limited spot size is about 30 degrees, and this is roughly the size of recovered spots. | ||
| * Parameter estimation for Rayleigh and Love (Pat/Levi) | * Parameter estimation for Rayleigh and Love (Pat/Levi) | ||
| + | * (see slides above) | ||
| + | * Estimating wave speed along with the bi-exponential spectrum. Could re-run with an externally-determined wave speed, maybe from the transients. | ||
| + | * Would also like to use more transient events (currently using 20-30 of them). | ||
| * Papers | * Papers | ||
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| * target: Seism. Research Lett., 6000 words, 10 figures. | * target: Seism. Research Lett., 6000 words, 10 figures. | ||
| * topographical plots (Daniel) | * topographical plots (Daniel) | ||
| + | * Victor added an introduction. Some items could be more detailed. | ||
| + | * References to South African mining measurements, | ||
| + | * Gary can add something on the local geology. Perhaps better to include it in sections other than introduction. Make a link to why the mine developed it did, since this has an impact on the geometry of the array. So this may be a natural spot for this discussion (near the topography maps) | ||
| + | * For plots: maybe show some examples, and keep the rest for the electronic supplement. | ||
| + | * Victor: maybe would be nice to show something that shows the Rayleigh-wave properties. Maybe some of Pat's plots? | ||
| + | * Gary: maybe show seismograms to show a transient event, so how clearly you can identify the various components of it. Will try to find a good example(s). | ||
| + | * Should also add the topography plots from Daniel. | ||
| * Active excitation overview paper | * Active excitation overview paper | ||
| * Leads: Gary, Ross | * Leads: Gary, Ross | ||
| * Others: Victor, Daniel,… | * Others: Victor, Daniel,… | ||
| + | * Will try to add a draft by Apr 13. | ||
| * Surface Active Excitation | * Surface Active Excitation | ||