Friday, January 02, 2009

The Yellowstone Supervolcano

Just a quick heads up for something I've been watching for a couple of days. Yellowstone National Park in the US (home of "Old Faithful") is actually the caldera of a massive volcano. Mount St. Helens (1980) was a damp squib in comparison. St. Helens prduced 0.3 cubic km of rock and ash, the Huckleberry Ridge eruption of Yellowstone (2 million years ago) produced 2500 cubic km of rock and ash!

Here's a quick summary of events a map showing where the quakes are happening... live output from local seismographs...

If you look at Yellowstone Lake recorder from a few days ago and that of the same recorder currently you can see the difference. These pages of data from the recorders can be refreshed to update them in real time.

I don't know if you saw the BBC's dramatised documentary "Supervolcano" but here's a page about the effects and previous eruptions of Yellowstone.

Looks like the swarm is marching northwards towards the Sour Creek dome...

This is a place of recent, continued uplift... (Scroll down to second image)

Here's a plot of the uplift... (Third graph down)

Someone on one of the groups said it was all fluff and hype and that it was mainly wind and dump trucks causing the hectic plot at Yellowstone Lake and that we should...
"Keep an eye on Old Faithful's recorder to see output without the wind making everyone excitable"

Well, if you do that here.. Looks pretty dramatic to me and not much like wind or passing trucks!

Keep your heads down!

No comments: