Prediction of crown fire behavior in two stands of jack pine
Document Type: Journal Article
Author(s): Charles E. Van Wagner
Publication Year: 1993

Cataloging Information

  • active crown fire
  • age classes
  • Canada
  • Canadian Initial Spread Index
  • crown fire behavior
  • crown fires
  • energy
  • experimental fire
  • fire danger rating
  • fire hazard reduction
  • fire intensity
  • fire management
  • fire spread
  • flame length
  • foliage
  • fuel appraisal
  • fuel types
  • ignition
  • moisture
  • Ontario
  • overstory
  • passive crown fire
  • pine forests
  • Pinus banksiana
  • Pinus spp.
  • rate of spread
  • stand characteristics
  • surface fires
  • wind
Record Maintained By:
Record Last Modified: November 7, 2019
FRAMES Record Number: 11871
Tall Timbers Record Number: 9094
TTRS Location Status: In-file
TTRS Call Number: Journals-C
TTRS Abstract Status: Fair use, Okay, Reproduced by permission

This bibliographic record was either created or modified by the Tall Timbers Research Station and Land Conservancy and is provided without charge to promote research and education in Fire Ecology. The E.V. Komarek Fire Ecology Database is the intellectual property of the Tall Timbers Research Station and Land Conservancy.


Published data on two sets of experimental fires in jack pine (Pinus banksiana Lamb.) forest were subjected to two forms of analysis. The first was a classification into surface fires and two kinds of crown fire, passive and active. In the second, the data were used to develop a model to predict both the spread rate of fire and the degree of crown consumption. The model consists mainly of two limiting equations for spread rate, one for surface fires and the other for full crowning fires; the independent variable is the Canadian Initial Spread Index. A critical surface intensity is first used to distinguish surface fires from crowning fires. A further process then estimates the degree of crowning and places the calculated final spread rate somewhere in the space between the limiting equations. The model inputs include six physical stand properties plus a pre-estimate of surface fuel consumption. It is a blend of physical theory and empirical observation.

[This publication is referenced in the "Synthesis of knowledge of extreme fire behavior: volume I for fire managers" (Werth et al 2011).]

Online Link(s):
Van Wagner, C.E. 1993. Prediction of crown fire behavior in two stands of jack pine. Canadian Journal of Forest Research. 23(3):442-449.