Global Geological And Climatic Events

Volcano erupts in IndonesiaPriority 1


Note4students

Mains Paper 1: Geography | Important Geophysical phenomena such as earthquakes, Tsunami, Volcanic activity, cyclone etc

From the UPSC perspective, the following things are important:

Prelims level: Mount Soputan

Mains level: Volcanic eruptions and Plate Tectonics Theory


News

Mount Soputan erupts

  1. A volcano, Mount Soputan has erupted in Indonesia’s North Sulawesi province spewing a column of ash measuring 7.5 km to the sky.
  2. Soputan is a small stratovolcano that rises to an elevation of 1,784m (5,853 ft).
  3. The cone is made of andesite and basalt rock.
  4. The volcano is one of Sulawesi’s most active, with 39 confirmed eruptions in the last 600 years.
  5. It is one of 129 active volcanoes in Indonesia which lies on a vulnerable quake-hit zone called “the Pacific Ring of Fire”.

Pacific Ring of Fire

  1. The Ring of Fire is a major area in the basin of the Pacific Ocean where many earthquakes and volcanic eruptions occur.
  2. In a large 40,000 km horseshoe shape, it is associated with a nearly continuous series of oceanic trenches, volcanic arcs, and volcanic belts and plate movements.
  3. It has 452 volcanoes (more than 75% of the world’s active and dormant volcanoes).
  4. About 90% of the world’s earthquakes and 81% of the world’s largest earthquakes occur along the Ring of Fire.
  5. The Ring of Fire is a direct result of plate tectonics: the movement and collisions of lithospheric plates, especially subduction in the northern portion.

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