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Italian supervolcano's magma source found

Posted on Monday, 18 September, 2017 | Comment icon 5 comments

The status of the Campi Flegrei supervolcano remains unclear. Image Credit: CC BY-SA 3.0 Donar Reiskoffer
Scientists have discovered evidence of a 'hot zone' feeding a supervolcano in southern Italy.
Known as Campi Flegrei, the volcanic caldera situated to the west of Naples last erupted centuries ago, however recent findings in the area, coupled with a lack of seismic activity for several decades, have indicated that another devastating eruption may be on the cards.

Using seismological techniques, scientists have now succeeded in pinpointing what they believe to be the place where hot material has been rising up from deep inside the Earth to feed the caldera.

"One question that has puzzled scientists is where magma is located beneath the caldera, and our study provides the first evidence of a hot zone under the city of Pozzuoli that extends into the sea at a depth of 4 km," said study leader Dr Luca De Siena from the University of Aberdeen.

"While this is the most probable location of a small batch of magma, it could also be the heated fluid-filled top of a wider magma chamber, located even deeper."

The last major activity in the area was back in the 1980s when the injection of magma in to the shallower part of the volcano resulted in a series of earthquakes.

"During the last 30 years the behaviour of the volcano has changed, with everything becoming hotter due to fluids permeating the entire caldera," said Dr Siena.

"Whatever produced the activity under Pozzuoli in the 1980s has migrated somewhere else, so the danger doesn't just lie in the same spot, it could now be much nearer to Naples."

"What this means in terms of the scale of any future eruption we cannot say, but there is no doubt that the volcano is becoming more dangerous."

Source: | Comments (5)

Tags: Supervolcano, Italy

Recent comments on this story
Comment icon #1 Posted by seanjo on 18 September, 2017, 18:45
Naples and the surrounding towns and villages are a really silly place to live!
Comment icon #2 Posted by Myles on 19 September, 2017, 11:19
I really dislike the term "supervolcano". Seems like a term created to garner attention.
Comment icon #3 Posted by EBE Hybrid on 19 September, 2017, 11:59
A bit like Man/Superman, Superman can fly and has really tough skin so he can easily rescue cats from trees without having his face ripped off by a struggling moggie. To the best of my knowledge no cat has ever been rescued by a supervolcano
Comment icon #4 Posted by Socks Junior on 19 September, 2017, 13:21
Given that the comparison between, say, Mount St. Helens (1 km3) and Yellowstone Huckleberry Ridge (2500 km3) I'd say it's an accurate term. These are monsters - that is 3 orders of magnitude!There is no real analoguebetween a supervolcano and a regular volcano. Even a big one like Krakatoa - that was a stratovolcano that "turned into" a caldera as it were due to the size of its eruption was only 18 km3.
Comment icon #5 Posted by paperdyer on 20 September, 2017, 17:24
Maybe we need a hurricane-like scale for volcanoes. Then we can classify them based on the amount of lava and other magma spewed forth.

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