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Monthly Archives: July 2016

Volcano in Rome has signs of life

A volcano in Rome has come back to life

Scientists are saying a dormant volcano on the outskirts of Rome is poised for an eruption. However, this may not occur for a number of years.

Researchers were stunned after they discovered Colli Albani, a volcano that was presumed extinct, is active once again.

This comes after a new report showed new steam vents, earthquakes and a rise in hill level in surrounding areas leads.

Alban Hills wikipedia

The Alban Hills (Italian Colli Albani) are the site of a quiescent volcanic complex in Italy, located 20 km (12 mi) southeast of Rome and about 24 kilometers (15 mi) north of Anzio.

The dominant peak (but not the highest) is Monte Cavo at 950 m. There are two small calderas which contain lakes, Lago Albano and Lake Nemi. The rock of the hills is called Peperino (lapis albanus) a particular Tuff, a combination of ash and small rocks that is useful for construction, and provides a mineral-rich substrate for grape vines.

The area was inhabited by the Latini during the 5th to 3rd centuries BC. The ancient Romans called them Albanus Mons. On the summit was the sanctuary of Jupiter Latiaris, in which the consuls celebrated the Feriae Latinae, and several generals celebrated victories here when they were not accorded regular triumphs in Rome. The temple has not survived, but the Via Triumphalis leading up to it may still be seen.

The hills, especially around the shores of the lakes, have been popular since prehistoric times. From the 9th to 7th century BC there were numerous villages (see the legendary Alba Longa and Tusculum). In Roman times these villages were inhabited as a way to escape the heat and crowds of Rome, and there are many villas and country houses in the area.

Studies have found the volcano operates in a cycle of a 31,000-year dormancy to eruption period. Colli Albani last erupted 36,000 years ago. Fabrizio Marra, a volcanologist, believes the next eruption could be in 1,000 years.

Scientists are also saying that when the volcano does erupt, it has potential to be equally as destructive as Mount Vesuvius, which caused mass destruction in Pompeii back in 79 A.D.

Marra hopes these findings will serve as a “wake-up call,” and encourage fellow scientists to more closely monitor the volcano moving forward.

Volcanic activity

Examination of deposits have dated the four most recent eruptions to two temporal peaks, around 36,000 and 39,000 years ago.[1][2] The area exhibits small localized earthquake swarms, bradyseism, and release of carbon dioxide and hydrogen sulphide into the atmosphere. The uplift and earthquake swarms have been interpreted as caused by a slowly growing spherical magma chamber 5-6 kilometers below the surface; some think that it may erupt again; if so, there is risk to Rome, which is only 25 to 30 km away.

The volcano emits large amounts of carbon dioxide.[6] This can potentially reach lethal concentrations if it accumulates in depressions in the ground in the absence of wind. The asphyxiation of 29 cows in September 1999 prompted a detailed survey, which found that concentration of the gas at 1.5 m above the ground in a residential area on the northwestern flank sometimes exceeded the occupational health threshold of 0.5%.

There are prophecies that say, Rome will be destroyed by earthquake and fire…pg

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