Yellowstone might go on first stage alert soon.

USGS ^ | 2/10/2010 | Myself

[Quix]

No.

Quix only has ONE FR screen name.

[winoneforthegipper]

Okay, I was just confused...lol!

[Quix]

Quix is sometimes easily confused, too.

However, given Jim’s request of us all to avoid multiple screen names . . . and given his generosity in affording us FR . . . I’m happy to comply.

Besides . . . with my personality . . . it wouldn’t help. Everyone would know by the 3rd post anyway.

[winoneforthegipper]

One thing to add to the discussion keep an eye on Iceland.

A volcano under the Eyjafjallajökull glacier over the last two weeks has been showing signs of possible eruption. GPS has logged a rather vigorous expansion or bulge and Seismographs had recorder a volcanic tremor swarm for almost a week.

This weekend those tremors stopped.

Over the last twenty years this volcano has had history of these swarms, but not the bulging(not detected). So there is an equal chance it will slip to background as easily as it would erupt.

However, this is a classic sign of an eruption. A lid on boiling pot is sometimes not a good idea.

[John W]

At the rate we’re going The World might go on first stage alert soon.

[Quix]

HMMMMM.

Have wondered what was going on there.

[Quix]

INDEED.

Particularly if any of the webbot stuff is remotely accurate . . . which it has been MORE THAN for several years now.

[winoneforthegipper]

This in one to watch in my opinion for it is located right on the plate boundary and is on a fractured zone of the Mid Atlantic ridge to boot.

[Quix]

Hmmmm . . .

I’ll look at that map/topographic of the seafloor more carefully.

Thx.

[Quix]

Wow.

That long Atlantic ridge fault makes a straight beeline for the Capital of Iceland.

Interesting.

[winoneforthegipper]

Add in a “hotspot” and you got fireworks...lol

Actually there has been some debate over the last few years that Iceland Hotspot is not truly a hotspot, but the mechanics of the alternative would make it even more dangerous.

[Quix]

Could you please elaborate a bit on the mechanics of the alternative?

[Steve Van Doorn]

Eyjafjallajökull (pronounced [‘eija fjatla jœkʏtl̥]). Who comes up with these names? ha

I do not believe Iceland is a big threat. Yeah it will have some volcanic activity no doubt but nothing huge.

If you look at the images of the plums motions in the earth you can see most of the plumbs are being drawn down in that area. Iceland is very unique in the since it is formed by a very long plumb that is nearly horizontal that originates deep under the Caribbean Sea.

How Iceland was originated can lead to many concepts. To me it looks like some sort of impact that created a channel either up to the surface or down to the Caribbean Sea. Think of a bullet hitting a block of Ice, but we can’t tell if the channel was created by an outward or inward source.

to zoom in on any web site hit control ‘=’ or hit control and move your mouse wheel forward.

[winoneforthegipper]

Steve, can not agree. Iceland geologically is an important cog in the wheel of plate tectonic movements and volcanic perturbations.

This article(s) I post for Quix, however you might enjoy the argument it proposes that the area is not really a hot tongue as other true hotspots are, but geophysically different set of rule driven ingredients that come together in Iceland and are in themselves quite remarkable.

Truly fascinating! {Read this one second though)

http://www.mantleplumes.org/Iceland1.html

First this one!

http://www.mantleplumes.org/Iceland3.html

thirdly...lol

http://www.mantleplumes.org/Iceland2.html

As you can see Steve, their are many forces going on in Iceland that are unique and remarkable. After you are done reading if you like I will shed my own thoughts.

[winoneforthegipper]

Also for historical purposes, this volcanoe’s sister just to her northwest. There is some thought that both are relying the same magma chamber.

http://vulcan.wr.usgs.gov/Volcanoes/Iceland/description_iceland_volcanics.html

“Katla volcano, located near the southern end of Iceland’s eastern volcanic zone, is hidden beneath the Myrdalsjökull icecap. The subglacial volcano is one of Iceland’s most active and is a frequent producer of damaging jökulhlaups, or glacier-outburst floods. A large 11 x 14 kilomters subglacial caldera has been the source of eruptions originating over a wide area, although most historical eruptions have taken place from fissures in the east side of the caldera. These appear to be a continuation of the Eldgja fissure system, which extends more than 57 kilometers to the NE towards Grímsvötn. An eruption from the Eldgja fissure system about 934 AD produced a voluminous lava flow of about 18 cu km, one of the world’s largest known Holocene lava flows. Katla has produced frequent subglacial explosive eruptions that have been among the largest tephra-producers in Iceland during historical time.”

[winoneforthegipper]

A brief on the supposed sistering of the two:

http://adsabs.harvard.edu/abs/2009AGUFM.V32B..03S

[winoneforthegipper]

Excellent movies of the swarm.

just press the play icon.

http://islande2010.mbnet.fr/2010/03/eyjafjallajokull-levolution-des-dernieres-heures/

[winoneforthegipper]

Anyways, swarm back on. After a lull this weekend in the last few hours they have ramped up again.

http://en.vedur.is/photos/jarmyrj_rit/100315_2205.png

[winoneforthegipper]

Volcano eruption simulator. Cool stuff!

http://www.alaskamuseum.org/features/volcano/

[Steve Van Doorn]

Points from the article
1. The article suggest if there was a plume it would originate from the east they are mistaken as the pic shown.
2. The article suggest the Atlantic “hot spots” must be related to the Iceland hot spot again they are mistaken as the pic shows.
3. They state:
”Seismic tomography yields no evidence for a plume-like structure in the lower mantle.”

the article is again mistaken. I shown you the pic of the plume in my last post. This is were I got it:
http://www.seismo.unr.edu/ftp/pub/louie/class/100/interior.html

I don’t think I need to go on.