40m QIL Cryo_Lab CTN SUS_Lab TCS_Lab OMC_Lab CRIME_Lab FEA ENG_Labs OptContFac Mariner WBEEShop
  40m Log  Not logged in ELOG logo
Entry  Wed Nov 28 23:18:35 2012, Charles, Update, PEM, Decreased RMS in Seismometers 8-31_11-29_PEM-RMS.jpg
    Reply  Thu Nov 29 02:43:48 2012, Ayaka, Update, PEM, Decreased RMS in Seismometers GUR1Xfilterbank.pngseismometers1129.jpgseismometers1129.pdf
       Reply  Thu Nov 29 09:58:06 2012, Den, Update, PEM, Decreased RMS in Seismometers 
          Reply  Tue Jan 29 14:34:42 2013, Jenne, Update, PEM, Secret Seis filters  
Message ID: 7759     Entry time: Wed Nov 28 23:18:35 2012     Reply to this: 7762
Author: Charles 
Type: Update 
Category: PEM 
Subject: Decreased RMS in Seismometers 

The attached plots display RMS noise from various accelerometers and seismometers over the past 90 days. One can see how after the reinstallation of the seismometers in November, RMS from the GUR1Z and GUR1X channels decreases by a factor of about 100 from data in August. Additionally, the RMS over the course of the last 90 days has notably decreased in all instruments. In many cases, the RMS is only the result of inherent electronics noise, rather than from a signal.

Attachment 1: 8-31_11-29_PEM-RMS.jpg  114 kB  | Hide | Hide all
ELOG V3.1.3-