Wildfires
- Created by: hollyjxne
- Created on: 16-05-18 16:20
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- wildfires
- Uncontrolled fires that destroy areas of vegetation
- 3 types of wildfire
- Surface fire
- Leaf litter and low lying vegetation burns. High or low intensity
- Ground fire
- Ground itself burns. Slow smoldering fire, no flame or smoke
- Crown fire
- Fire moves rapidly though the canopy. intense and fast moving
- Surface fire
- Conditions
- Climate and recent weather
- Need sufficient rainfall for vegetation to grow so there's plenty of fuel
- warm dry weather casues water in vegetation to dry up = more flammable
- Fuel charactersitics
- Fine, dry material catch fire and burn easily
- Fire behaviour
- Fires can throw out burning debris which helps fire spread
- Vegetation type
- Thick undergrowth & closley spaced trees allow fire to travel further
- Climate and recent weather
- Natural causes
- Lightning
- Volcanic eruptions
- Human causes
- Humans
- sometimes arson
- Humans
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