Global Geological And Climatic Events

In news: Campi Flegrei Super Volcano 


From UPSC perspective, the following things are important :

Prelims level: Campi Flegrei Super Volcano, Mt. Vesuvius, Volcanic eruptions in news.

Why in the News?

A 4.4 magnitude earthquake struck Italy’s Campi Flegrei super volcano, with Pozzuoli as the epicentre. Felt as far as Naples, it’s the strongest tremor in 40 years

Bradyseism Concerns near Campi Flegrei:

  • Campi Flegrei is prone to bradyseism, where ground elevation changes due to subsurface pressure.
  • The area, located 50 kilometres from Mt. Vesuvius, is undergoing a new cycle of bradyseism, according to volcanologists.
  • Over 500,000 people reside in the red zone adjacent to Campi Flegrei, prompting the Italian Civil Protection Agency to update evacuation plans.

About Campi Flegrei Volcano

  • Campi Flegrei, also known as the Phlegraean Fields, is a large volcanic area located in the western suburbs of Naples, Italy.
  • It is one of the most active volcanic systems in the world and has been active for at least 50,000 years.

Its Volcanic System:

  • Location: Campi Flegrei is situated within the Campanian volcanic arc in southern Italy, extending from the city of Naples to the Gulf of Pozzuoli.
  • Geological Formation: The volcanic system of Campi Flegrei is characterized by a large caldera, which is a collapsed volcanic crater, surrounded by numerous volcanic vents, craters, and lava domes. The caldera has a diameter of about 13 kilometers (8 miles).
  • Volcanic Activity: Campi Flegrei is considered a supervolcano due to its size and potential for large eruptions. It has experienced numerous periods of volcanic activity throughout its history, including explosive eruptions, lava flows, and phreatic (steam-driven) eruptions.
  • Terrain Features: The landscape of Campi Flegrei is characterized by volcanic features such as craters, fumaroles (steam vents), mud pots, and hot springs.


[2021] Mention the global occurrence of volcanic eruptions in ‘2021’ and their impact on regional environment.

[2018] Consider the following statements:

  1. The Barren Island volcano is an active volcano located in the Indian Territory.
  2. Barren Island lies about 140 km east of Great Nicobar.
  3. The last time the Barren Island volcano erupted was in 1991 and it has remained inactive since then.

Which of the statements given above is/are correct?

(a) 1 only

(b) 2 and 3

(c) 3 only

(d) 1 and 3

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