Campi Flegrei Super Volcano
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Artturi
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Campi Flegrei Super Volcano
Naples astride a rumbling mega-volcano

A slumbering Campi Flegrei volcano under the Italian city of Naples shows signs of "reawakening" and may be nearing a critical pressure point, according to a study published Tuesday.

Italian and French scientists have for the first time identified a threshold beyond which rising magma under the Earth's surface could trigger the release of fluids and gases at a 10-fold increased rate.

This would cause the injection of high-temperature steam into surrounding rocks, said lead author Giovanni Chiodini, a researcher at Italy's National Institute of Geophysics and Volcanology in Bologna.

"Hydrothermal rocks, if heated, can ultimately lose their mechanical resistance, causing an acceleration towards critical conditions," he told AFP by email.
It is not possible at this time to say when—or if—the volcano will erupt anew, he said.

If it did, however, "it would be very dangerous" for the half-million people living inside and near the caldera, he added, using the scientific name for the bowl-like depression created after a volcano blows its top.



Magmas near the critical degassing pressure drive volcanic unrest towards a critical state

During the reawaking of a volcano, magmas migrating through the shallow crust have to pass through hydrothermal fluids and rocks. The resulting magma–hydrothermal interactions are still poorly understood, which impairs the ability to interpret volcano monitoring signals and perform hazard assessments. Here we use the results of physical and volatile saturation models to demonstrate that magmatic volatiles released by decompressing magmas at a critical degassing pressure (CDP) can drive volcanic unrest towards a critical state. We show that, at the CDP, the abrupt and voluminous release of H2O-rich magmatic gases can heat hydrothermal fluids and rocks, triggering an accelerating deformation that can ultimately culminate in rock failure and eruption. We propose that magma could be approaching the CDP at Campi Flegrei, a volcano in the metropolitan area of Naples, one of the most densely inhabited areas in the world, and where accelerating deformation and heating are currently being observed.
2017 Jan 06 18:57
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Artturi
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RE: Campi Flegrei Super Volcano
What do you think might happen to a) Italy, b) Europe, or c) the so-called migrant crisis if Campi Flegrei erupted within few years?

Depending on the scale of the eruption, could it actually lead into another type of global crisis, which is characterized by Europoors seeking global aid and refuge?
2017 Jan 06 20:49
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Osweo
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RE: Campi Flegrei Super Volcano
Fun video (though sadly lacking in the Neapolitan cursing that would naturally accompany the real thing):




Can't they figure out a way to just have it bubble up somewhere in the Bay, making a new Capri for tourists to visit or Tiberiuses/Berlusconis to hold nasty orgies on? From what I've gathered over the years, there's very little that cannot be done when scientists send Bruce Willis to fly into something dangerous while Morgan Freeman makes a speech.

"And now if a whole nation fell into that? In such a case, I answer, infallibly they will return out of it. For life is no cunningly-devised deception or self deception, it is a great truth that thou art alive, that thou hast desires, necessities: neither can these subsist and satisfy themselves on delusions, but on fact. To fact, depend on it, we shall come back: to such fact, blessed or cursed, as we have wisdom for."
Thomas Carlyle
2017 Jan 07 17:20
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