Date: Fri, 8 Sep 2006 01:07:57 -0700
From: Masahiro Ito 
Reply-To: masahiro@gladstone.uoregon.edu
To: Keith Riles 
Subject: update for seismometer vs AS_Q/Inspiral range

Hi Keith,

Here's some plots of seismometers vs AS_Q and inspiral range.

http://www.uoregon.edu/~masahiro/l/S5/seis_vs_asq.html

I used about 95 hours of data since 8/31. I chose the time period that
the AS_Q RMS 5 - 7Hz data is available. The time period contains
relatively quiete seismic activity during Labor day weekend and noisy
period which may be caused from the volcanic activity at Mt. St.
Helens.


http://www.uoregon.edu/~masahiro/l/S5/eyseis_vs_h1range_timeshift/eyseis_vs_h1range_timeshift.html
http://www.uoregon.edu/~masahiro/l/S5/eyseis_vs_h1asq_timeshift/eyseis_vs_h1asq_timeshift.html

The sets of plots at links above are the time shift plots of EY
seismometer and H1 AS_Q and Inspiral range. Seismometer minute trend
was shifted integer number of data points, then plotted to see the
timing of the seismometer peaks and H1 AS_Q/Inspiral range peaks. I
expected the shift would be 0 or more for the best match, but it was
-1 which means the AS_Q/Inspiral peak tends to come 1 data point
earlier than the seismometer peak on the RMS minute trend data.

http://www.uoregon.edu/~masahiro/l/S5/h1asq_vs_h1range_timeshift/h1asq_vs_h1range_timeshift.html

I did the same for H1 AS_Q vs Inspiral range shown in the link above.
It has clear structure on time.

Masahiro Ito
University of Oregon
masahiro@uoregon.edu