lanceanderson.blagg@LIGO.ORG - posted 11:40, Thursday 24 August 2023 - last comment - 13:07, Friday 25 August 2023(72404)
Potential Noise in DARM from Garbage Truck at LSB
Following up on TJ's alog from 8/17 (72293), it was noted that a garbage truck at LSB was quite loud. The seismometers in the LVEA clearly picked up the noise, and it seems to coincide with noise in DARM. It's hard to be certain with only one signal, but it probably warrants further investigation.
Spectrogams attached of one seismometer and DARM for 2 minute time span around when noise was reported:
-Of signal
-Zoomed in with boxes on noise regions
-Stacked with some boxes around correlated noise
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Oli relayed to Genevieve that the garbage truck left at 16:05:00 local time yesterday (8/24). No noise was reported on site, but approximately 2 minutes before the truck left we see a signal in the LVEA seismometers similar to that from the truck last week, and the signal once again shows up in DARM.
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