Zombie Wildfires in Canada 2023
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Questions and Answers

What primarily fuels 'zombie' fires, which allows them to smolder underground for extended periods?

  • High humidity levels
  • Organic materials like peat (correct)
  • Near-surface water sources
  • Surface vegetation
  • In what way do 'zombie' fires differ from forest fires in their combustion characteristics?

  • 'Zombie' fires burn surface vegetation while forest fires burn underground materials.
  • 'Zombie' fires produce visible flames while forest fires do not.
  • 'Zombie' fires can smolder underground for years, while forest fires usually last for weeks or months. (correct)
  • 'Zombie' fires are ignited solely by human activities, unlike forest fires.
  • What event is mentioned as a potential trigger for the reignition of 'zombie' fires?

  • Snow cover
  • Controlled burns
  • Heavy rainfall
  • Warmer weather (correct)
  • How did the wildfire situation in Canada in 2023 compare to the previous year?

    <p>The total fires increased significantly, burning over 48 million acres.</p> Signup and view all the answers

    Which of the following statements about peat fires is true?

    <p>They can smolder for years and release more carbon.</p> Signup and view all the answers

    What is one primary reason for the increase in zombie fires in British Columbia and Alberta?

    <p>Less snow leading to unextinguished underground fires</p> Signup and view all the answers

    Which feature makes zombie fires difficult for firefighters to detect?

    <p>The flameless nature of underground fires</p> Signup and view all the answers

    Which region is NOT mentioned as being susceptible to zombie fires?

    <p>Southern Africa</p> Signup and view all the answers

    What has hindered firefighters' efforts to manage zombie fires effectively?

    <p>Difficulties in accessing remote forest areas</p> Signup and view all the answers

    How many zombie fires typically occur annually in British Columbia and Alberta under normal conditions?

    <p>Usually 15 or fewer</p> Signup and view all the answers

    What ecological conditions contribute to the persistence of zombie fires after winter?

    <p>Warmer winter temperatures and less precipitation</p> Signup and view all the answers

    Which statement about zombie fires is true?

    <p>They can smolder in deep duff layers.</p> Signup and view all the answers

    What specific type of vegetation is associated with areas prone to zombie fires?

    <p>Cool coniferous forests rich in needles</p> Signup and view all the answers

    Study Notes

    Zombie Wildfires in Western Canada

    • Canada experienced the worst wildfire season on record in 2023
    • Over 6,500 blazes scorched more than 48 million acres of forest across Canada
    • This represents a 170% increase compared to 2022
    • Wildfires subsided when the snow arrived
    • "Zombie" fires, which are smoldering under the snow, re-ignited afterward.
    • These fires are difficult to extinguish because the organic material beneath the snow is highly flammable
    • They can burn for weeks or months underground
    • The fires emerge because the ground is struck by lightning or when farmers set controlled fires to burn excess vegetation.
    • The fires get their name because they are known to smolder or reappear years later.
    • Many of the fires had not been fully extinguished, and with warmer weather, the fires have roared back to life, forcing evacuations.

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    Description

    Explore the record-breaking wildfire season in Canada during 2023, where over 6,500 blazes affected more than 48 million acres. Learn about the phenomenon of 'zombie' fires that smolder under the snow and re-ignite, creating challenges for firefighting efforts. This quiz delves into the causes, impacts, and responses to these ecological events.

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