PSN-L Email List Message
Subject: Re: Period
From: "Geoffrey" gmvoeth@...........
Date: Tue, 3 Jul 2007 02:17:31 -0700
I think it might be interesting to sum all three axis
possibly by some kind of vector math to
obtain a single signal.
I have never done this before but I know
for a fact the main signal most probably is not
in any of the three planes but some vector of all
----- Original Message -----
Sent: Saturday, June 30, 2007 06:07
Hi All, I just did a side by side comparison of an Earthquake recorded by a Vertical with a 2? second period and a Horz Pendulum
with a 10? second period. The different on this 6.7M at 10000km was very pronounced, showing all the advantages of the Horz.
However, using the Vertical, I record many more Earthquake, and smaller ones. If the event is large, both sensors are impressive
In planning my next sensor, I need to pick a target period. I already see the advantage of each. What period might be the best
target? Or is it just better to pick one end of the spectrum and not the center?
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