groups:homestake:monitoring:may4
DQ Shift for Week of May 4th
May 4th, 2015
May 5th, 2015
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Sharp spike at 2000E station at 11:30UTC.
WTP showing non-stationarity late in the day in N/E channels.
4850A mass position 1/2/3/timing quality all go crazy at 00:00UTC:
seen here.
2000C mass positions still high (see above link); 2000E mass position still nonsense.
800 level mass position 2 high (and climbing throughout day today and yesterday)
here.
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:
here
One especially large spike seen in all UG stations at ~22:30 UTC:
seen here
2000C E channel has a glitch at around 7:00UTC whose amplitude takes ~1 hour to decrease back to level of noise
here.
ORO,WTP seeing some very interesting changes in amplitude throughout the day:
ORO and
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
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WTP and ORO still show amplitude fluctuations at start of day:
WTP and
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:
800 and
2000C. Note these were the channels that were recentered. It's like that's what this spike is; see here
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
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Maybe another one in Papua New Guinea?
EQ page. Though there really isn't one close to this time >2.5 that I can find.
May 9th, 2015
2000D has spike at beginning of day only in E and N channels:
time series. Also seen a little bin in 2000C.
ORO has interesting amplitude changes throughout the day
seen here.
Maybe an EQ around 12:00 UTC
here.
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May 10th, 2015
groups/homestake/monitoring/may4.txt · Last modified: 2015/05/10 12:19 by meyers