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Yellowstone might go on first stage alert soon.
USGS ^ | 2/10/2010 | Myself

Posted on 02/02/2010 7:06:54 PM PST by Steve Van Doorn

Since January 17, 2010 Yellowstone has had the second largest swarm ever recorded. The swarms have been steady at about 10 miles in depth and they have subsided a few days ago.

In the past two days the depth has raised up to around 7 miles and in the past couple hours quakes vastly increased.

http://www.quake.utah.edu/helicorder/ymr_webi.htm
http://www.seis.utah.edu/req2webdir/recenteqs/Maps/111-44.html

Remember this doesn’t mean we will see an eruption and it most likely means a normal volcano. It is very unlikely we will see a caldera eruption.
But these changes are significant and cannot be over looked

Some history:
Since the most recent giant caldera-forming eruption, 640,000 years ago, approximately 80 relatively nonexplosive eruptions have occurred. Of these eruptions, at least 27 were rhyolite lava flows in the caldera, 13 were rhyolite lava flows outside the caldera and 40 were basalt vents outside the caldera. Some of the eruptions were approximately the size of the devastating 1991 Pinatubo eruption in the Philippines, and several were much larger. The most recent volcanic eruption at Yellowstone, a lava flow on the Pitchstone Plateau, occurred 70,000 years ago.


TOPICS: Front Page News; News/Current Events; US: Wyoming
KEYWORDS: caldera; catastrophism; earthquakes; eotw; eq; nationalparks; usgs; volcano; yellowstone
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To: HerrBlucher
SUMMARY OF VOLCANO ALERT LEVELS
http://volcanoes.usgs.gov/activity/alertsystem/index.php
http://volcanoes.usgs.gov/activity/status.php
61 posted on 02/02/2010 7:44:39 PM PST by Steve Van Doorn (*in my best Eric cartman voice* 'I love you guys')
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To: machogirl; Frantzie

http://dsc.discovery.com/convergence/supervolcano/supervolcano.html

Some background info i found for lay people like us.


62 posted on 02/02/2010 7:44:55 PM PST by Canedawg (Our government has become a travesty.)
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To: SamAdams76

However, the effects on live stock and crops would cause starvation...and the ash could remain in the atmosphere for up to 6 years. We could be talking about snowstorms in August in Georgia.


63 posted on 02/02/2010 7:45:25 PM PST by My Favorite Headache
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To: All

placemarker


64 posted on 02/02/2010 7:46:07 PM PST by aMorePerfectUnion
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To: Mom MD

Here is a link for the webicorder from Mt.Redoubt.

Almost all on the graph are harmonic tremors.


65 posted on 02/02/2010 7:46:51 PM PST by winoneforthegipper (I will follow the "True North-star" and that's, Sarah!)
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To: ETL
The last one was about, ‘gulp’, 650,000 years ago."

What month?

66 posted on 02/02/2010 7:47:02 PM PST by ~Peter
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To: Mom MD
I noted that as well. The activity seems centered around the YMR site on the univ of Utah maps. I’m not sure what harmonic tremors look like on the seismographs - can anyone enlighten me?

They look like the melody, just modulated up a fourth or a fifth, but that's not important now...

67 posted on 02/02/2010 7:47:23 PM PST by gas_dr (Trial lawyers are Endangering Every Patient in America)
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To: Canedawg

Thank you :)


68 posted on 02/02/2010 7:47:27 PM PST by machogirl (First they came for my tagline.)
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To: Steve Van Doorn
Maybe it's just a graboid invasion. They set off seimsographs, ya know.

Scouts Ou! Cavalry Ho!

69 posted on 02/02/2010 7:47:52 PM PST by wku man (Who says conservatives don't rock? Go to www.myspace.com/rockfromtheright)
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To: ohioWfan
Do you mind telling me what a “swarm” is?

A group of bees flying, but that's not important now...(I should not have watched airplane tonight)

70 posted on 02/02/2010 7:48:42 PM PST by gas_dr (Trial lawyers are Endangering Every Patient in America)
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To: Steve Van Doorn

YIKES!

Thanks for posting!


71 posted on 02/02/2010 7:49:51 PM PST by TaraP (*GOD* made love so strong, so it would carry you all the way home.....)
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To: winoneforthegipper

Thanks for the reply but you forgot the link. Can you either post it or FM me?


72 posted on 02/02/2010 7:50:16 PM PST by Mom MD (Jesus is the Light of the world!)
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To: Steve Van Doorn
Keep your eye on them, and the rest of the world, here: (Opens in new window)
73 posted on 02/02/2010 7:50:53 PM PST by brityank (The more I learn about the Constitution, the more I realise this Government is UNconstitutional !! Â)
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where’s ALGORE when you need him?
if we just pass cap and trade, and cooperate in Copenhagen, will it all stop? ;)


74 posted on 02/02/2010 7:51:00 PM PST by machogirl (First they came for my tagline.)
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To: bergmeid
Madison river seem stable at the moment:
http://waterdata.usgs.gov/wy/nwis/uv/?site_no=06037500&agency_cd=USGS
75 posted on 02/02/2010 7:51:10 PM PST by Steve Van Doorn (*in my best Eric cartman voice* 'I love you guys')
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To: Steve Van Doorn
What things would be like in much of the US if the caldera blew:


76 posted on 02/02/2010 7:51:19 PM PST by Plutarch
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To: Steve Van Doorn

Dear Yellowstone:
Behave yourself!
Sincerity,
Yield 2 the Right.


77 posted on 02/02/2010 7:52:03 PM PST by yield 2 the right (Freedom is never free, it costs blood, sweat and tears, and to some that is too high. I disagree!)
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To: machogirl

Volcanoes that are located in the interior of continents, such as Yellowstone, are especially dangerous because of the thick granitic magma involved. The thicker magma acts like a plug and traps explosive gases. Hawaii-like volcanoes, on the other hand, generally consists of highly fluid magma which gently flows out of the volcano. Volcanoes like Mt. St Helen are somewhere in between because they are on or near the boarder of a continent and ocean (basaltic magma/lava vs granitic magma/lava). Continents are basically granitic, Oceans basaltic, in composition.


78 posted on 02/02/2010 7:52:27 PM PST by ETL (ALL (most?) of the Obama-commie connections at my FR Home page: http://www.freerepublic.com/~etl/)
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To: Steve Van Doorn

NOt to nit pick or nothin, but....lol

The depth on average today has been less that 5 miles...lol!


79 posted on 02/02/2010 7:53:07 PM PST by winoneforthegipper (I will follow the "True North-star" and that's, Sarah!)
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To: gleeaikin; 75thOVI; aimhigh; Alice in Wonderland; AndrewC; aragorn; aristotleman; Avoiding_Sulla; ..
Remember this doesn't mean we will see an eruption and it most likely means a normal volcano. It is very unlikely we will see a caldera eruption. But these changes are significant and cannot be overlooked... Since the most recent giant caldera-forming eruption, 640,000 years ago, approximately 80 relatively nonexplosive eruptions have occurred.
 
Catastrophism
 
· join · view topics · view or post blog · bookmark · post new topic · subscribe ·
 

80 posted on 02/02/2010 7:53:16 PM PST by SunkenCiv (Happy New Year! Freedom is Priceless.)
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