posted on Nov, 2 2011 @ 02:03 PM
So I have an update on Glacier Peak and I wanted to give it its own post:
I wrote to the PNSN yesterday about the micro quakes, providing a link to that seismo. They have always been good about getting back to me, but I
really didn't expect what they said. Here is a copy of the email (reading from bottom up):
Thank you for the heads up!
There do seem to be some small local earthquakes on this record and we are looking at them more closely. Our coverage of Glacier Peak is pretty poor.
We have only one station on the mountain and our system requires 3 or more stations to "trigger" on an event to get computer generated notifications.
This would happen with a magnitude 2 or better but small M 1 earthquakes can slip by if not noticed. "Ice Quakes" can also look a lot like small
earthquakes but usually have a different frequency content.
Our duty seismologists often review our subnet triggers with a particular eye for GPW events because of our poor coverage in the area but there are
hundreds of these, usually wind noise, and interesting little events can get missed.
Thanks again for watching and taking the time to write. We will follow up and let you know what the volcano seismologists have to say about these once
they have had a chance to review this "activity".
Director of Outreach & Information Services
University of Washington,
Pacific Northwest Seismic Network
Seattle, WA 98195-1310
On Nov 1, 2011, at 12:55 PM, tara XXXXXXX wrote:
Hello! I have been monitoring the cascade chain for sometime now and couldn't help but notice the recent activity at Glacier Peak. I live less than 50
miles from this volcano so have a vested interest in it! (My house sits on its last lahar) Looking at the most recent seismo:
....there most definitely seem to be some micro quakes, increasing in size over the past couple of days. Given the eruptive nature of this volcano,
and the lack of monitoring equipment/isolation, it is one that makes me a bit nervous. I see that to date, none of these quakes have been listed. Are
you aware of any changes or signs in addition to these micro quakes?
Thank you for your time-
(names removed to protect the innocent
SO. Even though I have been telling people my concern for Galcier Peak is partly due to the poor monitoring, I am surprised to have it confirmed.
Maybe I shoudn't be.
To think that my observations might actually be of use to them, is actually quite a boost. I mean, it is more than worth the time just for my own
personal knowledge and the ability to share the information in a forum such as ATS. That the PNSN could benefit from it confirms what I have somewhat
suspected but never really believed. Amazing how this internet thingy can connect so many people.
I'll be sure to share any further info that I get. Of note, it seems that the micro quakes have calmed down!!
edit on 2-11-2011 by westcoast
because: (no reason given)