Reports until 08:57, Monday 13 October 2014
H1 PEM (PEM)
dale.ingram@LIGO.ORG - posted 08:57, Monday 13 October 2014 (14420)
1 -3 Hz seismic noise last week
The attached plot uses GMT on the horizontal axis.  The plot shows 1 - 3 Hz seismic noise last week.  Hanford contractors were hauling typical numbers of rubble loads on day shift and swing shift from Monday 10/6 through Thursday 10/9.  ERDF, the rubble pit, operated on Friday 10/10 but the number of trucks running to ERDF was low during the day on Friday and nearly absent on swing.  Commissioners can expect that the Monday-Thursday noise on this plot will continue through the fall.  Fridays will vary from week to week.  We're trying to learn the Friday haul estimates a day or two in advance.   

The big feature on the plot that shows during the weekend appears to be earthquake-related.
Images attached to this report