# Fire intensity

n. The amount of energy or heat release per unit time.

• Discussion

FireWords uses a non-specific definition of fire intensity that encompasses several specific types of fire intensity measures. Byram (1959) defined the term as "the rate of energy or heat release per unit time, per unit length of fire front, regardless of its depth.” However, to avoid confusion with related terms, we suggest the specific term “fireline intensity” when referring to Byram’s definition. Reaction intensity  and total fire flux  are examples of other measures of fire intensity.

• Byram, G.M. 1959. Combustion of forest fuels. In: Davis, K.P., ed. Forest fire: control and use. New York: McGraw Hill: 61–89.

• Notes

• Joe Scott, Research Forester

Systems for Environmental Management