VOLCANO case study: Mt Soufriere, Montserrat 1997

Causes of Eruption 

The island has been created because the Caribbean Plate and Atlantic Plate are moving towards each other and the dense oceanic plate is being subducted under the lighter continental plate.

At destructive boundaries oceanic crust is destroyed as it is forced below the less dense continental crust. The partially melted rock forces its way to an area of lower pressure ready to erupt.

Before 1995 Mount Soufriere had been dormant for over 300 years. 

In 1995 the volcano began to give off warning signs of an eruption (small earthquakes and eruptions of dust and ash)

In 1997, Large eruptions continued with the dome collapsing and large pyroclastic flows affecting much of the island

Primary and Secondary effects of the Eruption

Responses to the Eruption

Short-term responses

• Evacuation of the southern part of the island
• Abandonment of the capital city.
• The British government gave £41 million in aid although riots occurred as locals complained that the British were not doing enough to help the island  money for compensation and redevelopment.
• Unemployment rose due to the collapse of the tourist industry.

Long-term responses

• Money was given to individuals to help them move to other countries. 

• An exclusion zone was set up in the volcanic region.
• New roads and a new airport were built.
• Services in the north of the island were expanded.
• The presence of the volcano resulted in a growth in tourism.
• The MVO (Montserrat Volcano Observatory) was set up to study the volcano and provide warnings for the future 
• A Risk assessment was done to help islanders understand which areas are at risk and reduce problems for the future.