PSN-L Email List Message

Subject: Re: tiltmeters
From: "George Harris" gjharris@.............
Date: Tue, 6 Feb 2001 15:06:08 -0800


A couple of years ago, I raised the question concerning tilt.  At that time
I had a vertical pendulum which had a natural frequency of about 1 second.
I was most surpised when one of the earthquakes in the Aleutians showed up
very clearly with a 15 second period in California.  I
believe that it was recording tilt.  I would recommend you trying to

George Harris

----- Original Message -----
From: ian 
Sent: Sunday, February 04, 2001 11:26 AM
Subject: tiltmeters

> I'm wondering if I have any chance of detecting tele-seismic events with a
> meter.  I think I can resolve a tilt of 5 micro-radians and I can bandpass
> signal through a 20 second to 10 second period filter.
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