Hi

Check for any sudden changes in that swarm, it might indicate a moderate
earthquake happening soon in that area or nearby.

Others earthquake on nearby fault lines also suggest this.

Regards
J=F3n Fr=EDmann.

On sun, 2008-12-21 at 17:38 -0800, JimT wrote:
> We've had a swarm of small quakes in the neighborhood today, with
> epicenters that appear to be close to the point where the Calaveras
> fault joins the San Andreas fault.  There were over 20 the last time I
> counted.  The biggest was 4.1.
>=20
> http://quake.usgs.gov/recenteqs/Maps/121-36_eqs.htm
>=20
> On 12/20/08, psn-l-digest-request@..............
>  wrote:
> >
> > .------ ------ ------ ------ ------ ------ ------ ------ ------ ------.
> > | Message 1                                                           |
> > '------ ------ ------ ------ ------ ------ ------ ------ ------ ------'
> > Subject: Question of amplitude ?
> > From:    =3D?ISO-8859-1?Q?J=3DF3n_Fr=3DEDmann?=3D 
> > Date:    Fri, 19 Dec 2008 16:09:06 +0000
> >
> > Hi all
> >
> > My lehman type sensor did not pickup the Mw5,9 earthquake south of
> > Iceland this morning. I am unsure why that did happen. I am wondering i=
f
> > that is a question of amplitude or of there is something wrong with the
> > sensor it self.
> >
> > There is a spike at 2,2Hz in the data from the sensor at SPS 100, but a=
t
> > SPS 1 I get the spike at 0.22Hz.
> >
> > Regards.
> > --=3D20
> > J=3DF3n Fr=3DEDmann
> >
> >
> >
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>=20
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>=20
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