Awesome steampunk seismo, dude.

-----Original Message-----
From: psnlist-request@.............. [mailto:psnlist-request@...............
] On Behalf Of Glenn Durden
Sent: Monday, January 24, 2011 2:44 PM
To: psnlist@..............
Subject: Re: Recording earthquakes from 3rd floor

I'm on the third floor, and as you can see by the pictures on my website,=20
the result is that you'll see all the big earthquakes easily.

http://www.brasswings.com/seis.html

But of course there is a huge amount of background noise.
Wind is the biggest issue.   Windy days can block out pretty much=20
everything.
You'll also find that the floor probably isnt solid enough to rest a=20
seismometer on.     The weight of a human is enough to register full scale=
=20
deflection as the floor sags, when you move from one side of the room to th=
e=20
other.
The best I could do is to lift the sensor box off the floor and press it up=
=20
against the wall (in a corner) with the weight of some bricks.
If you've got the ability to measure it (with an inclinometer), you'll also=
=20
see how much the building sways backward and forward through the course of=
=20
the day and it heats up and cools down.

But as you say, its worth a try anyway.   You might have a more solid=20
building than mine.




Glenn

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