Surface fires consume litter such as dried leaves, twigs, and duff. In contrast, ground fires burn buried organic matter including peat and humus. Unlike surface fires which are easily put out, ground fires are tough to contain due to their existence below the surface. Both surface and ground fires spread slowly due to the obstruction of winds by the towering trees, but the spread of surface fires can suddenly increase when burning in an area with steep slopes.
The spread of ground fires is comparatively slower and can burn over several months. In some occasions, ground fires can temporarily smolder when temperatures dip such as in winter, only to reignite when conditions become ideal again. While the two types of fires are less destructive compared to crown fires, surface fires generally cause less damage to the forests relative to ground fires. Putting out any kind of wildfire comes with insurmountable challenges. However, crown fires are normally the hardest type of wildfire to contain due to its ability to spread rapidly.
Crown fires produce the hottest temperatures of any type of wildfire and huge flames, and the two characteristics make them dangerous. Despite not being as destructive as crown fires, ground fires are also exceptionally hard to contain due to the unpredictability of their spread. Research has also improved our predictive capabilities and led to the development of many practical tools for evaluating fire risks, analyzing fire behaviour and predicting where fire may threaten forest values.
For more than four decades, Canadian Forest Service researchers have been developing and refining several national systems for identifying where and when the risk of wildland fire is greatest. This work has played a crucial role in protecting Canadians, their property and forest resources. As well, government and university researchers have developed several fire occurrence prediction models for predicting the number of lightning-caused and human-caused forest fires in a given area.
You will not receive a reply. For enquiries, contact us. Report a problem on this page. Please select all that apply: A link, button or video is not working. Such wind pushes the flames and sparks from the fire into a potentially interconnected or continuous tree canopy.
Due to the quick speed at which crown fires can spread, they often turn into extremely intense fires. To ensure you are ready to face any type of wildfire that occurs, shop the extensive collection of wildland fire gear for sale at the Supply Cache.
From hand-made boots to fire line tools, we have everything you need to stay safe in any type of fire event. Close search. Home All Categories expand. All Categories. Lights Flashlights Headlamps Scene Lighting. HVC Equipment. Ground Fire A ground fire is a type of wildfire that occurs in the subsurface where fuels such as peat, coal, tree roots, and other buried organic matter ignite and burn under the ground.
Surface Fire A surface fire refers to a fire that ranges from low to high intensity depending on the conditions.
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