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| groups:homestake:monitoring:may4 [2015/05/07 14:08] – meyers | groups:homestake:monitoring:may4 [2015/05/10 12:19] (current) – [May 9th, 2015] meyers |
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| * 800 level mass position 2 high (and climbing throughout day today and yesterday) [[http://homepages.spa.umn.edu/~prestegard/homestake/show_plots.php?date=2015_05_05&time=daily&type=channel&label=VM2|here]]. | * 800 level mass position 2 high (and climbing throughout day today and yesterday) [[http://homepages.spa.umn.edu/~prestegard/homestake/show_plots.php?date=2015_05_05&time=daily&type=channel&label=VM2|here]]. |
| ====May 6th, 2015==== | ====May 6th, 2015==== |
| | * Timing quality normal. 5 drops for underground stations spaced throughout day. Seems standard. |
| | * 300 station has spikes in it's time series: [[http://homepages.spa.umn.edu/~prestegard/homestake/plots/2015_05_06/daily/station_300_channel_LHE.png|here]] |
| | * One especially large spike seen in all UG stations at ~22:30 UTC: [[http://homepages.spa.umn.edu/~prestegard/homestake/show_plots.php?date=2015_05_06&time=daily&type=channel&label=LHE| seen here]] |
| | * 2000C E channel has a glitch at around 7:00UTC whose amplitude takes ~1 hour to decrease back to level of noise [[http://homepages.spa.umn.edu/~prestegard/homestake/plots/2015_05_06/daily/station_C2000_channel_LHE.png|here]]. |
| | * ORO,WTP seeing some very interesting changes in amplitude throughout the day: [[http://homepages.spa.umn.edu/~prestegard/homestake/plots/2015_05_06/daily/station_ORO_channel_LHE.png|ORO]] and [[http://homepages.spa.umn.edu/~prestegard/homestake/plots/2015_05_06/daily/station_WTP_channel_LHE.png|WTP]]. |
| | * ORO, WTP and 2000C artifacts ONLY show up in N and E channels, not in Z channel. |
| | * Mass positions for 800, 2000C showing voltages above where we'd like them to be. They are recentered by Tanner on May 7th (UTC time) |
| ====May 7th, 2015==== | ====May 7th, 2015==== |
| * EQ at ~7:30-9 UTC [[http://earthquake.usgs.gov/earthquakes/eventpage/us20002das#general_summary|Papua New Guinea is getting hit hard...]] | * EQ at ~7:30-9 UTC [[http://earthquake.usgs.gov/earthquakes/eventpage/us20002das#general_summary|Papua New Guinea is getting hit hard...]] |
| | * WTP and ORO still show amplitude fluctuations at start of day: [[http://homepages.spa.umn.edu/~prestegard/homestake/plots/2015_05_07/daily/station_WTP_channel_LHE.png|WTP]] and [[http://homepages.spa.umn.edu/~prestegard/homestake/plots/2015_05_07/daily/station_ORO_channel_LHE.png|ORO]] |
| | * 800 and 2000C showing large spikes at the beginning of day. Large enough to wash out EQ on the scale of the time series: [[http://homepages.spa.umn.edu/~prestegard/homestake/plots/2015_05_07/daily/station_800_channel_LHZ.png|800]] and [[http://homepages.spa.umn.edu/~prestegard/homestake/plots/2015_05_07/daily/station_C2000_channel_LHZ.png|2000C]]. Note these were the channels that were recentered. It's like that's what this spike is; see here [[http://homepages.spa.umn.edu/~prestegard/homestake/plots/2015_05_07/daily/station_C2000_channel_VM1.png|2000C recentered]]. |
| | * spikes in time series at 19:30 and 20:00 UTC in most channels. |
| | * Timing quality shows 8 drops, consistent across all UG stations. |
| ====May 8th, 2015==== | ====May 8th, 2015==== |
| | * EQ around 8:45UTC [[http://homepages.spa.umn.edu/~prestegard/homestake/show_plots.php?date=2015_05_08&time=daily&type=channel&label=LHE|seen here]]. |
| | * Maybe another one in Papua New Guinea? [[http://earthquake.usgs.gov/earthquakes/eventpage/us20002dqa#general_summary|EQ page]]. Though there really isn't one close to this time >2.5 that I can find. |
| | * |
| ====May 9th, 2015==== | ====May 9th, 2015==== |
| | * 2000D has spike at beginning of day only in E and N channels: [[http://homepages.spa.umn.edu/~prestegard/homestake/plots/2015_05_09/daily/station_D2000_channel_LHE.png|time series]]. Also seen a little bin in 2000C. |
| | * ORO has interesting amplitude changes throughout the day [[http://homepages.spa.umn.edu/~prestegard/homestake/plots/2015_05_09/daily/station_ORO_channel_LHE.png|seen here]]. |
| | * Maybe an EQ around 12:00 UTC [[http://homepages.spa.umn.edu/~prestegard/homestake/show_plots.php?date=2015_05_09&time=daily&type=channel&label=LHZ|here]]. |
| | * 5.4 in New Guinea [[http://earthquake.usgs.gov/earthquakes/eventpage/us20002e1u#general_summary|seen here]] and 4.9 and Vanuatu [[http://earthquake.usgs.gov/earthquakes/eventpage/us20002e1w#general_summary|here]]. |
| ====May 10th, 2015==== | ====May 10th, 2015==== |