Hi,

I may be your nearest neighbour (East Scotland).  I have a 4.5 Hz 
Geophone and a Lehman long period.  I don't normally pick up anything 
less than about 2.5 Mag with my geophone unless it is quite close.  The 
recent Hemel Hempstead oil storage depot which exploded (and was 
equivalent to a 2.4 Magnitude) was not picked up by my geophone.  The 
oil depot is about 300 miles south of where I am.  I did get an 
excellant trace of the recent mag 3.0 quake near Fort William, which is 
about 75 miles away.  See 
http://www.earthquakes.bgs.ac.uk/recent_events/recent_events.html for 
details.

If possible, you should get the geophone out of the house.  Then you can 
turn up the gain and hopefully pick up some events.  Mine are on a 
concrete block away from the house.  Unless you have a long period 
geophone you will be limited to fairly near by events.  A great website 
for events is http://www.earthquakes.bgs.ac.uk/helicorder/heli.html , 
though right now the graphs haven't updated since the 24th.  No doubt a 
fault which will be corrected when the staff return to work.  The 
Edinburgh station is actually in the basement of the building I work in!

You're welcome to check my system, http://www.iasmith.com/realtime.htm , 
though at the moment I'm trying to track down 2 problems: my Lehman is 
oscillating and I have an intermittent electrical fault somewhere which 
draws large annoying lines on the graphs occasionally.

Ian Smith

Jón Frímann wrote:

>Hi
>
>This is my first email message here, so i want to say hi with everybody.
>I did setup my first geophone one week ago. For those how have intrest
>in checking it here is a url
>http://www.jonfr.com/earthquake/earthquake.htm I am still at testing it,
>for possible errors and bugs and so on.
>
>The sensor is located in my apartment, but in a quiet spot. This week
>has been rater quiet in the terms of number of earthquakes. But you can
>check the Icelandic Meteorological office, earthquake part here >
>http://hraun.vedur.is/ja/englishweb/index.html But there is a alot of
>earthquakes in Iceland that i don't pickup on my one geophone. Mostly
>from 0,0 to 3 on the ricther scale.
>
>Best Regards.
>  
>
__________________________________________________________

Public Seismic Network Mailing List (PSN-L)