Assessing Fire Propagation Empirical Models In
Shrub Fuel Complexes Using Wind Tunnel Data
Author(s)
E. Marino, M. Guijarro, J. Madrigal, C. Hernando & C. Diez
Abstract
Shrubland are one of the main communities affected by wildland fires, both in
forested and unforested areas. However, empirical models predicting fire
behaviour in these communities are scarce. One reason explaining the lack of
knowledge is the difficulty of obtaining data to develop these kinds of models.
Wind tunnel experimental fires have been carried out in different shrubland fuel
complexes (Ulex europaeus L. and Pterospartum tridentatum (L.) Willk.)
collected in Galicia (NW Spain). Rate of spread data recorded in the laboratory
tests have been compared with predictions from existing empirical models. The
relationship between the rate of spread values observed in the wind tunnel and
the values predicted by different empirical equations obtained in field
experimental burns is highly significant, although models overestimate the
values observed in the wind tunnel. Nevertheless, the high correlation (r between
0.86 and 0.99) allows both values to be considered proportional. Even if the
laboratory scale is a limiting factor to study fire behaviour, these experiments are
simpler, safer and less expensive than the ones carried out in the field. Therefore,
laboratory experiments could be an important complementary source of
information to field studies in order to further the understanding of fire
behaviour in shrubland fuel complexes.
Keywords: fire behaviour, rate of spread, shrubland, empirical models, Ulex
europaeus L., Pterospartum tridentatum (L.) Willk.
1 Introduction
Modelling is progressively more becoming a powerful tool to study fire
behaviour. Classically, fire behaviour models are classified as physical,
empirical and semi-empirical models. Empirical modelling has resulted in
Keywords
fire behaviour, rate of spread, shrubland, empirical models, Ulex
europaeus L., Pterospartum tridentatum (L.) Willk.
Related Book
Other papers in this volume
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