Volcanic Eruptions are movement of Magma from the interiors to the surface and erupt as lava on the surface. At convergent plate boundaries, the volcanic eruptions are acidic magma and at divergent, the volcanic eruptions are basic magma.
The pacific ring of fire constitutes 65% of all volcanic eruptions in the world.
The global occurrence of volcanic eruptions in 2021
1. In January 2021, the Fuego volcano in Guatemala erupted, causing ashfall and lava flows in nearby communities.
2. In March 2021, the Merapi volcano in Indonesia erupted, causing ashfall and evacuations in nearby villages.
3. In April 2021, the Taal volcano in the Philippines erupted, causing ashfall and evacuations in the surrounding area.
4. In addition, there were several eruptions of Kilauea volcano in Hawaii and ongoing activity at the Sakurajima volcano in Japan.
The impact of these eruptions on the regional environment:
1. Volcanoes have also caused global warming over millions of years during times in Earth’s history when extreme amounts of volcanism occurred, releasing greenhouse gases into the atmosphere.
2. Volcanic eruptions are generally preceded by increased seismic activity.
3. Ashfall from the eruptions can cause damage to crops and infrastructure, and can also disrupt air travel.
4. Lava flows can destroy homes and infrastructure, and can also lead to the formation of new land.
5. Volcanic ash can also have a significant impact on human health, causing respiratory issues and other problems.
6. In addition, volcanic eruptions can lead to changes in the local climate, such as increased rainfall or cooler temperatures.
Hazard mapping and monitoring plate boundaries of the earth will mitigate the effects of volcanic eruptions on lives and property.