Last edited by Bubba Dawg; 01-02-2009 at 12:17 PM.
My Zombie plans are to pack up all the ammo and guns and held to the mall.
In the study, Accelerated Uplift and Magmatic Intrusion of the Yellowstone Caldera, 2004 to 2006, the authors note that while most of the magma remains about 400 miles below the surface, a significant plume rises to about 30 miles deep, where it spreads out horizontally like a pancake that is larger than Los Angeles. It seems likely that the pancake is expanding and causing the floor of the caldera suddenly to rise.
"Our best evidence is that the crustal magma chamber is filling with molten rock," Professor Smith explained. "But we have no idea how long this process goes on before there either is an eruption or the inflow of molten rock stops and the caldera deflates again." In other words, something is afoot, but no techniques exist to forecast what comes next. The prediction is easier for single-channel, cone volcanoes. At a caldera such as Yellowstone, the magma could suddenly blow through at any number of locations. "We use the term 'restless' to describe these systems," Professor Smith said.
And what if the ground at Yellowstone does not start to go down? Well, these calderas, he admits, "occasionally they burp". Let's hope the park's belly-ache resolves itself – such a "burp" would shake half of the planet.
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