Mindmap
Volcanoes
Inhalt der Mindmap
Volcanoes
Volcanoes
- Montserrat
- Causes
- Mount Soufriere
- Composite Volcano
- Layers of ash and lava
- Violent
- Previously dormant
- Composite Volcano
- Destructive plate boundary
- North and South american plates under Caribbean plate
- Mount Soufriere
- Effects
- Short term
- 19 deaths 100+ injured
- 7 Villages destroyed
- Infrastructure + homes dest.
- Airport + Ports destroyed
- Health services unable to cope
- Sewage Systems
- Short term
- Long Term
- Homes roads etc took a long time to be rebuit
- Environmental damage
- Beaches
- Forests
- Habitats destroyed
- Coral reef
- Beaches
- Lung disease
- Ash
- Skills Shortage
- Over dependence on handouts
- Population fell
- Wider Imapacts
- Economy Decimated
- Evacuees in unsafe camps for long periods of time
- Tourism impacted
- New volcano tourism
- Housing shortages
- Increases in rents
- Ongoing minor eruptions
- Serious lahars following heavy rain
- Responses
- 5000 people evacuated
- UK provided aid
- Royal Navy evacuated people to antigua
- Offered £2500 to move to UK
- Red Cross
- New monitoring stations
- LEDC
- Causes
- Montserrat
Composite
- destructive plate margins
- magma in the subduction zone under great pressure
- subsidary cones
- irregular eruptions
- viscous lava
- lava + ash
- violent eruptions
Shield
- constructive plate margins
- magma rises to fill plate gap
- regular, frequent eruptions
- runny
- not explosive
- gentle slope
- made of lava
- constructive plate margins
Supervolcanoes
- 1000 x bigger
- Lots of ash
- Global cooling
- magma chamber collapses after eruption
- Huge Caldera
Predicting eruptions
- tiltmeters
- bulges
- Slopes
- Satellites
- Measure heat
- tiltmeters
Pyroclastic flow is a fast moving current of very hot gas and lava
Informationen
- Beschreibung
- Volcanoes from Geography module 'Restless Earth' Including a case study.
- Erstellt von
- Amelia Brown · Mär 2015
- Aktualisiert
- 19 Feb 2016
- Aufrufe
- 33
- Tags
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