[Geysers] Seismograms

[Paul Strasser]

Karen, FYI about earthquake swarms (if this turns into a swarm, and 2-3
quakes does not a swarm make):

 

The Daisy group is fond of earthquakes.  The more in a swarm, apparently the
more that Daisy  - and that other geyser up there - respond.

 

Paul Strasser

 

  _____  

From: geysers-bounces at lists.wallawalla.edu
[mailto:geysers-bounces at lists.wallawalla.edu] On Behalf Of Karen Low
Sent: Sunday, January 17, 2010 6:43 PM
To: Geyser Observation Reports
Subject: Re: [Geysers] Seismograms

 


Well, I definitely felt the earthquake at 6:04 pm!  Perhaps I'll head out in
the basin after doing ski drops in the morning, to see if anything seems to
be obviously reacting.

Earthquakes rock my world!

Karen Low

--- On Sun, 1/17/10, Michael Goldberg <goldbeml at ucmail.uc.edu> wrote:


From: Michael Goldberg <goldbeml at ucmail.uc.edu>
Subject: [Geysers] Seismograms
To: geysers at lists.wallawalla.edu
Date: Sunday, January 17, 2010, 6:03 PM

There was a small earthquake swarm this afternoon centered about 10 miles
northwest of Old Faithful, with three events (so far) having magnitude
between 2.5 and 2.7.  I've attached a copy of the current Old Faithful
seismogram.

For comparison purposes I also attached a couple of seismograms of recent
Giantess eruptions:

The July 6 eruption starts at 6:13 MST.  The large signal at 6:02 MST is
from a distant 6.1 earthquake.

The October 14 eruption starts at 3:48 MST.  There are a handful of local
earthquakes, like the one at 6:02 MST.  I would guess that the long duration
signals at midday and late afternoon are weather-related noise.

If Giantess erupts during a rainstorm, I don't think we'd ever be able to
tell from the seismic record.

Michael Goldberg
Michael.Goldberg at uc.edu


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