Wildfires

Question 1

What are wildfires

Answer 1

Uncontrollabel fires that destroy large arae sof vegetation/forests

Question 2

Three types wildrie:

Answer 2

1 - Ground - prat and tree roots on ground burn - slow , no flame , little smoke
2 - Surafec fire - leaf litter an dlow lying vege burn - high or low intensity
3 - Crown fire - fire moves rapdily through canopy (top laye) - intnsen and fast moving

Question 3

Conditions that favour wildries?

Answer 3

Vegetation type:

• thikc undergwoth / dense trees - spread
• pine contain lots oil - burn easily
• Eucalpyus trees shed strips bark - spread

Fuel characteristics:

• fine , dry material - brun eaisly
• Continous cover - spread
• more mateirla -burn for longer

Climate and Rexenet weather:

• rainfall = increase vege = more fuel
• Warm dry weather in dry season –> vege dry up - more flmmable
• Strong winds provide more O2 - helps fire burn

Fire behaviour:
- creeping fires move across ground slowly
running fire - spread rapdilu and more intsne
- Throw out burning debris - help spread

Question 4

Human a Natural vauses of fire?

Answer 4

natural:
- lighting
- volcanicn eruptions - hot lava / ash

Human:

• dropping ciggaertess , campires BBQ , fireworks
• Arson - ptupsodlully

Question 5

Politcal impacts:

Answer 5

• blame Gov - unrest

- Gov change fortest mnagment parctices e.g clearing vege to reudce fuel

Question 6

Risk managmebt to reduce impacts wildfires?

Answer 6

Short term:

• put out fire
• dirveting away from steelmnets
• evac

LT:
prevention:
- pyublic eduactaion
- prodvude fire eaters to out out fires befire they ebcome out of cotrol
- Prepardenss:
- housholds having emegrncye plan/kit , qauothoriets make emegrcy shelters
- Adapattaion:
- using non-flammbale building materials, fire breaks (gaps tress ) around steelmenst to sto[p them spreaidng