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A volcano erupted in the sea last week in the South Pacific island of Tonga. Tonga has since been cut off from the rest of the world, as communication cables have been damaged. According to the New Zealand government, it may take a month to recover. The tsunami was caused by the eruption of the volcano.
NASA scientist James Garvin has estimated that the eruption of the volcano was 500 times more than the 10-megaton capacity nuclear bomb dropped by the US on Hiroshima in 1945. Know how a volcano erupted in water…
How many volcanoes are there in the world?
There are 1350 active volcanoes in the world. According to the US Geological Survey, most of these are within 40 thousand km of the Pacific region. These are called Ring of Fire. It is responsible for 90% of the world’s earthquakes.
How do volcanoes erupt from under water?
There are about one million volcanoes within the ocean. Most of these have become extinct. According to the Global Foundation for Ocean Exploration Group, ‘about three-quarters of all volcanic activity occurs in water.
When a volcano erupts, volcanic gases are released due to the magma coming up towards the surface of the earth. She looks for a way out. This creates a pressure. When these gases reach the water, the water vaporizes, which increases the pressure.
How did the tsunami come?
According to Australian volcanologist Ray Cass, the intensity of the explosion in Tonga indicates that a large amount of gas was released under heavy pressure. It is possible that the waves of aftershocks going through the water turned into tsunami.
How long was the effect of the eruption in the volcano?
According to Garvin, such an explosion has never been seen before in the last 100 years. The echo of this explosion reached Alaska 9744 km away. In New Zealand, about 2300 km away, the waves after the explosion also caused damage.
What will happen next?
NASA says that it is likely that there will not be such a severe and explosion in a long time.
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