Source: HT
Context: Mount Etna, Europe’s largest active volcano, erupted spewing ash, smoke, and lava several kilometres high.
About Mount Etna Volcano:
- What It Is?
- Mount Etna is a stratovolcano and one of the most active volcanoes in the world.
- It is classified as a Decade Volcano due to its frequent activity and risk to nearby populations.
- Location:
- Situated on the eastern coast of Sicily, Italy, between Messina and Catania.
- Lies at the boundary of the African and Eurasian tectonic plates.
- History:
- Etna’s volcanic activity can be traced back over 500,000 years.
- In recent notable eruptions occurred in 2018, 2021, and now in 2025.
- Features of Etna:
- Tallest Active Volcano in Europe: Stands at approximately 3,403 metres, making it the highest peak south of the Alps.
- Expansive Volcanic Structure: Spans an area of 1,190 square kilometres with a basal circumference of 140 km, making it Italy’s largest active volcano.
- Complex Crater System: Contains five active summit craters and over 300 flank vents, enabling both summit and lateral (flank) eruptions.
- Strombolian vs Plinian Debate: While some classify it as Strombolian (discrete bursts), others consider it Plinian due to the ash cloud reaching the stratosphere.
- World Heritage Recognition: Inscribed as a UNESCO World Heritage Site in 2013 for its geological, scientific, and cultural significance.
- Why Do Volcanoes Erupt?
- Subsurface Magma Pooling: High heat and pressure in Earth’s mantle melt rock into magma.
- Gas Expansion: Volatiles like CO₂ and SO₂ expand as magma rises, increasing pressure.
- Surface Fractures: Faults in Earth’s crust let magma escape, triggering eruptions.
