Whats going on at yellowstone?

Originally posted by Poppa D
reply to post by Curious_Agnostic

 

I know, I am fed up with the crap from USGS.

I am still waiting in the last two hours for some type of WIND theory from the less educated people in the thread.

Poppa D

As I recall, there was a pretty good discussion on "wind" about 30 pages back.

reply to post by Curious_Agnostic


Not all stations are the same: most of those available in the Yellowstone area webicorder page are not broadband, this means that they will pick less of these long "harmonic" waves. Try checking this image to see which ones are broadband stations and which ones short-period stations.

Incidentally, all stations in the Teton region are all broadband stations, which means they are more sensitive than short period stations on picking such waves. Also charts here have a different scale: each vertical division is 100 microvolts versus 500 microvolts of Yellowstone area charts, difference which makes their lines look crazier.

[edit on 2009/1/3 by Shirakawa]

Just found this thread- hope this hasn't been posted before, but this article seems to indicate that harmonic tremor may be a regular response in Yellowstone to seismic events.

cat.inist.fr...

Volcanic eruptions are sometimes accompanied by a characteristic type of seismicity known as harmonic tremor, in which the signal is dominated by discrete vibration frequencies. This harmonic structure could reflect resonance behaviour in the excitation source or filtering of the seismic waves as they propagate through the surrounding rocks; but complexity and variability in the properties of volcanic systems make it difficult to discriminate between such mechanisms. To address this question, we have analysed the source and propagation characteristics of seismicity at Old Faithful geyser (Yellowstone National Park), the cyclic behaviour and accessibility of which make it an ideal natural laboratory for studying harmonic tremor associated with near-surface sources. We find that sharp pressure pulses inside the water column trigger distinct seismic events that give rise to a harmonic ground response whose frequency varies spatially but not temporally. A superposition of these seismic events creates the appearance of continuous harmonic tremor.

Originally posted by Realtruth
Take a look at RSOE Alerts.

Lot's of quakes in Alaska and major one elsewhere in the world. This is not normal activity.

Quite a few blue and orange quake icons

hisz.rsoe.hu...

I'm getting dejavu from your RSOE reminders.

www.abovetopsecret.com...

Originally posted by Realtruth
Update on worldwide quakes.

Take a look at RSOE Alerts.

Lot's of quakes in Alaska and major one elsewhere in the world. This is not normal activity.

Quite a few blue and orange quake icons

hisz.rsoe.hu...

I tried posting earlier but it dint go through... these are not harmonic tremors, though they look like them

I think its safe to say that these readings of "harmonic tremors" are not yellowstone related.

Ive checked out other U of U site, and many have the same tremors more then 100 km away.

Examples

www.quake.utah.edu...
www.quake.utah.edu...

some of them are many 100's of Km away from yellow stone, some with larger amplitudes then yellowstonefalls.

www.quake.utah.edu... for more of them

reply to post by Curious_Agnostic


I say at this point the way things have been behaving over the last 6 days, anything is unusual.a while back I posted info stating from USGS that the earthquake activity has tripled since 2000. so nothing at this point is unacceptable

reply to post by Realtruth


Actually, there ARE always earthquakes in Alaska.

Some of a good size too.

I dunno Im still seeing a 20 micron constant wave on Z for the lake and not far off the village shows a 12 on Z. I dont believe this is from the quake in Indonesia. The sensors around it arent giving the same reading. Raises to a 30 at sometimes. Although its very small its definately not normal.

Nothing significant has happened today.Just tremors from other earthquakes.Thats good news,looks like the panic is over.Ill check back in the morning but im betting thats it for now.

I wonder how many of the geysers register on the seismographs when they "erupt"

reply to post by stikkinikki



I hear you, I wish I would have taken screenshots it looks like like the activity increased.

Anyone see Indonesia?


[edit on 3-1-2009 by Realtruth]

This was posted on another board- it passes the smell test with me and suggests that the harmonic tremor was actually wind noise. That might account for the increased flow from the lake as well if winds were whipping the water out of the lake:

Folks,


I finally e-mailed a contact I have at YVO with questions about the swarm & various concerns voiced in the BLOG about tremors, gas, weather, etc.


Here is what I received back (QUESTIONS ARE IN CAPS):


------------ STARTS -----------


WOULD GAS EMISSIONS BE ABSORBED PRIOR TO REACHING THE SURFACE IF THEY WERE RELEASED UNDER THE LAKE?


ANY GAS FINDINGS OF NOTE?


Gas is a tricky subject. The easiest thing to look for is SO2. SO2 dissolves in water and would not be found. Yellowstone's geothermal features don't emit SO2 anyway, which really only comes off high temperature magmas. If something anomalous were happening, we'd see abundant bubbling of CO2 and H2S through the lake. So far, no reports.


GENERAL REMARK, NOT IN RESPONSE TO A QUESTION


People have to keep in mind that the weather at Yellowstone has been very, very nasty. It is wintertime and the park roads are closed except for snowmobile use. Very few people are anywhere near the activity, and those few who are there, have been told all the key details about what is happening.


MANY OF THE BLOGGERS HAVE SAID THEY "SEE" HARMONICS. HAVE THERE BEEN ANY, & WOULD WATER/STEAM MOVEMENT ALSO GENERATE THEM, OR ARE THEY SOLELY A BYPRODUCT OF MAGMA?


No tremor has been reported by any seismologists. People are looking at wind noise and interpreting it as tremor. Tremor can be caused both by hydrothermal systems and by magma.


THE WEB PAGES DON'T SHOW QUAKES AFTER YESTERDAY AT 1723 MST. ARE THE SYTEMS DOWN?


No earthquakes large enough to be automatically plotted (>2.5) have occurred since yesterday. Things are abating (at least for now).


NOTE THE WORD "AUTOMATICALLY". IT MAY BE THAT SMALLER QUAKES ARE NOT ADDED TO THE DB UNTIL SOMEONE CONFIRMS IT IS A QUAKE & NOT SOMETHING ELSE. DUNNO. (Ramp83)

Originally posted by Poppa D
reply to post by Curious_Agnostic

 

I am still waiting in the last two hours for some type of WIND theory from the less educated people in the thread.

Well, I came up with a Wind Theory a few pages back. I think I'm probably just as LESS educated as the next guy.
Link

[edit on 3-1-2009 by LazyGuy]

reply to post by rigel434


The wind story already wiped out.
see the post in this thread from the guy with the screenshots from the last 5 year.
Put them beside eatch other and see the big difference.
The weather data is and this archive is couple of pages after that post.

On a personal note, I would add that I'm posting about harmonic tremor so much because a few nights ago when I was reading another board and saw posts saying that harmonic tremor was starting, and it looked like it to my untrained eyes, I thought I was staring the end of the world in the face. I've been following Yellowstone for years and watched the "Supervolcano" movie where the actors were certain that an eruption was imminent when the harmonic tremor started. It was an absolutely surreal and helpless feeling. I had to turn off the computer and I just walked around the streets aimlessly, expecting to see people start rushing out of their homes in panic at any moment. I really thought that was it. I really wish I hadn't seen the Drudge Report story on Yellowstone earthquake swarms, or I'd have just been enjoying football games in peace.

with the amount of activity near Indonesia, I will wager to say Sunday at about 10:00 am the activity will pick up at Yellowstone.Right now just a guess.I will try to back it up then.

Originally posted by coolvibe
reply to post by rigel434

 

The wind story already wiped out.
see the post in this thread from the guy with the screenshots from the last 5 year.
Put them beside eatch other and see the big difference.
The weather data is and this archive is couple of pages after that post.

Too bad if true, but the post I quoted certainly seemed to come from someone at YVO- he knew about the sulfur content that Yellowstone emits and certainly sounded legit.

I think it will pick back up, we will see. Seems whatever it is reaches a rock or something, waits awhile then breaks thru with a quake. Then takes off again and repeats.

It looks to me like there has been an acceleration in vertical uplift since around august of this year.

Jan 02 2009 has 118.4 compared to 48.6 recorded in Jan 02 2006

Jan 02 also has the highest report from 98-09 which is all the data listed.

[edit on 3-1-2009 by SixNine]

[edit on 3-1-2009 by SixNine]

reply to post by rigel434


What an awesome thread!! I don't think I've missed a post! But really! This is crazy - so maybe you should rethink it - unless you truly have found the answer to all of the questions. Are you saying that the wind is under the ice "whipping" and blowing the water out of the lake? If so - I guess you might have just solved all of the riddles in one quick swoop! Water flow changes are because of wind whipping it, and vibrations from resultant waves hitting on the bottom of the ice cover are what is causing all of the variations in graph read-outs.
_javascript:icon('')
HAHAHA!! We all needed a good chuckle! Thanks!!