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Volcanic Hazards - Coggle Diagram
Volcanic Hazards
Volcanic eruption effects
Primary effects
Communications damaged or disrupted
Transport, water electricity and gas supply
Farmland and buildings destroyed
People killed
Secondary effects
Overwhelmed hospitals
Shortage of food, water, shelter and medicine
Spread of disease due to contamination of water and burst pipes
Loss of farmland and local businesses, reduced income and food production
Econmoic impact from disruption to air travel
Primary Hazards
Those caused directly by the hazard
Solid lumps of lava which fly through the air
lava flows
Pyroclastic flow- very hot flows of gas and ash reaching 700 kmph and 800C
Ash falls
Gas clouds
Secondary Hazards
Hazards caused as an indirect result of the primary hazards
Landslides- rock and earth moved down a slope caused by tectonic activity
Tsunamis-
Glacier bursts- Large floods caused by the melting of ice beneath a glacier
Lahars- Volcanic mud flows which travel along river valleys