Hi

I will soon add long period channels to my hardware and a long period
sensor too. So I don't have any reason to extend the geophone down to
that level.

The frequancy of the Kuril island 8.2Mw earthquake was hig enugh so that
I was able to see on frequancyes above 4Hz, even well above 10Hz. That
is unusual. I did lowpass it down to 4Hz for cleanup on the signal.

Regards.
-- 
Jón Frímann
http://www.jonfr.com
http://www.simnet.is/jonfr500/earthquake/

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