PSN-L Email List Message

Subject: Re: quake
From: jonfr@.........
Date: Fri, 18 Apr 2008 11:40:45 -0400 (EDT)

Hi all

There just was an aftershock now, emsc says it is M 4.5. See here, (might
be outdated soon)

By the looks of it, there is a slight chance of a swarm of mag 4.0 to 5.5
earthquakes, they might even go as high as mag 6.0. But that would be a
rare event, but I am not expecting it. I however also don't rule it out.

Jón Frímann.

> I see they downgraded the quake to 5.2. I describe it as a "serious" quake
> in my first posting.  I suppose I based this on passed quakes in this
> locality which did not last as long. Certainly this lasted a lot longer.
> This one lasted at least 45 seconds e.g. felt for that long. We have
> lights
> on our desks that are suspended. The quake waves continued to vibrate for
> over two minutes. I used the word distortion of data. This quake was so
> strong and so close. If this were audio, I would describe the incoming
> data
> as being clipped. I saved six aftershocks out of maybe ten or more I
> considered significant. At least two were felt and reported by TV
> listeners
> as I watched my computer screen. Lehmans and AS-1 showed tendency toward
> peak in the .1 to .3 Hz range five minutes before quake on a relatively
> quiet display. And below .1 Hz just seconds before quake. Is that
> important?
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