PSN-L Email List Message

Subject: Re: Kuril Islands quake
From: "Geoff" gmvoeth@...........
Date: Tue, 4 Sep 2007 04:42:59 -0700

The best way to get rid of human artifacts is
to limit your interest area below 2Hz
and if 5 second waves bother you which
most probably is true you make a bandwidth
flat between 2 or 3 seconds and 2 Hz
If you have vehicular traffic or construction
in your geographical area you may very well
need to do this. You will still get false alarms
with heavy trucks like trash trucks
or septic trucks or fire trucks.

If you want to see a good idea of what
this range looks like see the TUC station online.

It updates itself if you keep watching.


----- Original Message ----- 
From: "Thomas Dick" 
Sent: Monday, September 03, 2007 10:47 AM
Subject: Kuril Islands quake

Horizontal units seem to have a lot of artifacts here in southern Indiana .. anyone else see this?

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