Hello Mr. Frimann;

If you have a modulo recorder with some kind of alarm
you only need about 30 minutes of histoey to
capture almost any earthquake out there.
But the very big earthquakes will go on for an hour or more
in that case you might develop several files all relating
to the same event but if you capture only the P,S,L waves
that is all you want to do. Not to watch every undulation
unless you are making somekind of tomography as part of
a large homogenous academic system.

This has been learned by me through experience
and not by formal education.

Regards;
gmvoeth

----- Original Message ----- 
From: "Jón Frímann" 
To: "PSN-Postlist" 
Sent: Friday, April 07, 2006 3:30 PM
Subject: Recording a teleseismic event, recording time

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