Impacts of Volcanic Activity
- Created by: dreamrepeat
- Created on: 30-04-16 09:10
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- Impacts of Volcanic Activity
- Hazards
- Environment
- LAHARS - Redoubt Volcano, Iceland, 1989-1990 - Pyroclastic flows melted snow & ice causing lahars in Drift River.
- Destroyed / damaged 167 lakes.
- dense forest within 10km of the summit was destroyed.
- VOLCANIC GASES - Laki Eruption, Iceland, 1783 - the N Hemisphere cooling by 1°C & USA winter average temperature 4.8°C below 225 year average.
- Mt Pinatubo, 1991 - World Temperature fell by 1°C.
- ASHFALLS & LAHARS - More than 86,000 hectares of agricultural lands and fishponds were affected.
- LAHARS - Redoubt Volcano, Iceland, 1989-1990 - Pyroclastic flows melted snow & ice causing lahars in Drift River.
- Social
- PYROCLASTIC FLOW - Montagne Pelee Volcano, Martinique - The city of St Pierre's 28,000 population died with only 2 survivors.
- MUDFLOWS - formed during the eruption of Ruiz volcano, Columbia, 1985 - killed about 29,000 people.
- Mt Pinatubo - 1.2 million people lost their homes around the volcano and had to migrate to shanty towns in Manila.
- Economic
- Environment
- Benefits
- Environment
- SLOW LAVA FLOW - Hawaii, Kilauea - emitting steam & lave since 1983 - added more than 500 acres of land to the island.
- ASHFALL & LAVA FLOWS - provide fertile land
- land can be farmed by locals & can provide income through crop growth
- Social
- Economic
- land can be farmed by locals & can provide income through crop growth
- Attract visitors to an area who seek accommodation & spend money of g&s in the area.
- Demand increases employment as jobs become available for locals.
- Visitors can be in the form of tourists or researchers who seek the landscape.
- Neighbouring countries who receive refugees can receive financial aid to provide for these people.
- Refugees spend money in the economy thus providing income for locals.
- Environment
- Hazards
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