Volcanic eruption in MEDC (Mt St Helens, Washington, USA) Flashcards
1
Q
Where did it happen?
A
Washington state, USA
Near USA-Canada border
2
Q
When did it happen?
A
18th May 1980
3
Q
Why did it occur?
A
Active for over 100 years
4
Q
Which plates were involved?
A
Juan de Fuca, North American
5
Q
What were some immediate responses to the hazard?
A
Search and rescue of survivors by helicopters
Emergency medical treatment in nearby towns
Shelter found for stranded tourists and newly homeless
Masks provided to filter dust
Roads cleared of ash (1m deep in places)
6
Q
What were some long term responses to the hazard?
A
Rebuild buildings and homes Rebuild roads Clear drainage channels eg. rivers to prevent flooding Remove fallen trees and replant forests Attract tourists back to the area
7
Q
What were some short term effects?
A
57 people died 250 homes were destroyed Spirit lake filled Salmon hatchery, logging camps, crops destroyed Roads and bridges washed away Electricity and phone lines cut Every tree in 250km^2 destroyed Earthquake of 5.1 on Richter schale Flooding
8
Q
What were some long term effects?
A
Loss of farming income All vegetation destroyed Small eruptions continued until 1986 Access difficult Tourism affected Costs for repairs reached $2.74 billion
9
Q
What type of plate boundary was involved?
A
Destructive
