PSN-L Email List Message

Subject: Re: More then 2000 files
From: =?ISO-8859-1?Q?J=F3n_Fr=EDmann?= jonfr@.........
Date: Thu, 11 Mar 2010 03:57:06 +0000


Hi Jerry,

Tectonic and high frequancy earthquakes in volcanoes are not that
diffrent. But a volcanic tremor is a low frequancy events with a long
tail. I have only recored once such event and that was in a volcano
named Gr=EDmsjall, that was few weeks ago. That is how I can tell the
signals apart.

But I also use IMO data, and the location is usally a good clue on what
type of activity this is. But that might not always be the case.

The swarm continues, and the Hekla station plot is quite intresting. As
it is full with earthquakes.

Regards,
J=F3n Fr=EDmann.

On mi=F0, 2010-03-10 at 21:46 -0600, GPayton wrote:
> Jon,
> =20
> You live on the North Atlantic Ridge splitting Iceland. =20
> =20
> How do separate its normal magma activity from that of a nearby
> volcano's magma activity, if there is a difference?  To me, it would
> be like living next to a subway tunnel and trying to hear people
> walking above on ground level?  Just wondering how you do it?
> =20
> Regards,
> Jerry
> =20
> =20
>         ----- Original Message -----=20
>         From: J=F3n Fr=EDmann=20
>         To: PSN-Postlist=20
>         Sent: Wednesday, March 10, 2010 9:17 PM
>         Subject: More then 2000 files
>        =20
>        =20
>         Hi all,
>        =20
>         The activity continues in Eyjafjallaj=F6kull volcano. So far I
>         have
>         recored more then 600 earthquakes or so. The activity
>         continues and
>         doesn't seems to be stopping.
>        =20
>         When I write this there are 2078 files in the folder for Mars
>         2010. Most
>         of the earthquakes that I have recored are microquakes.
>        =20
>         Regards,
>         --=20
>         J=F3n Fr=EDmann J=F3nsson
>        =20
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>        =20
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