Geography Case Study Montserrat Volcano
- Created by: michaelhall10
- Created on: 24-02-16 17:02
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- Case Study Montserrat Volcano
- Causes
- Montserrat sits on top of a destructive plate margin.
- The subductive zone builds pressure as magma from the melting oceanic plate punches up though the crust.
- The North American plate is subducted by 22Cm per year.
- The pressure build up led to frequent eruptions between 1995-2000
- Effects
- Ash cloud from the eruption reached 400ft as column of ash was ejected into the atmosphere.
- 4 dead and 17 missing as well as the airport on the South of the Island near plymouth.
- As ash column collapsed it created pyroclastic flows which reached speeds of up to 200 mph and temperatures of 500C
- collapsed tourism industry meant unemployment went from 7% up to 50%
- destroyed 150 homes on the East side to the South of the island as well as completely destroying the capital city of Plymouth
- People had to be re located to the north of the Island leading to a 200% increase in the price of rent.
- Increase in mental issues with many people suffering from anxiety and depression because of the eruption.
- due to the destruction of roads there was a dramatic increase in conjestion
- Hazard management.
- Extensive sizemic network setup to monitor the sahpe of the volcano to check for swelling and depressions in its surface.
- COSPEL and tiltmeters used to measure gas expulsion and and vibrations given off by the volcano.
- Parts of the islands shut off to civilians to keep people out of the pyroclastic flow routs.
- Geologists from the university of Reading regularly flew over to measure cracks and flows.
- Responses
- British Government sent £2,700 to each adult to help them re build homes and lives.
- Building materials sent fro Scotland to help construct solid shelters before the winter hit.
- 5 RAF helicopters were used to transport essentials like food and water to the island as well as the assistance of 500 soldiers to maintain order.
- Causes
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