Skip to Main Content
Observations of energy transport and rate of spreads from low-intensity fires in longleaf pine habitat-RxCADRE 2012Author(s): Bret Butler; C. Teske; Dan Jimenez; Joseph O'Brien; Paul Sopko; Cyle Wold; Mark Vosburgh; Ben Hornsby; E. Louise Loudermilk
Source: International Journal of Wildland Fire
Publication Series: Scientific Journal (JRNL)
Station: Southern Research Station
Download Publication (856.0 KB)
Related Research Highlights
How Fire Maintains Biological Diversity in Fire Dependent Forests
DescriptionWildland fire rate of spread (ROS) and intensity are determined by the mode and magnitude of energy transport from the flames to the unburned fuels. Measurements of radiant and convective heating and cooling from experimental fires are reported here. Sensors were located nominally 0.5mabove ground level. Flame heights varied from 0.3 to 1.8 m and flaming zone depth varied from 0.3 to 3.0 m. Fire ROS derived from observations of fire transit time between sensors was 0.10 to 0.48 m s 1. ROS derived from ocular estimates reached 0.51 m s 1 for heading fire and 0.25 m s 1 for backing fire. Measurements of peak radiant and total energy incident on the sensors during flame presence reached 18.8 and 36.7kWm 2 respectively. Peak air temperatures reached 11598C. Calculated fire radiative energy varied from 7 to 162 kJ m 2 and fire total energy varied from 3 to 261 kJ m 2. Measurements of flame emissive power peaked at 95 kW m 2. Average horizontal air flow in the direction of flame spread immediately before, during, and shortly after the flame arrival reached 8.8 m s 1, with reverse drafts of 1.5 m s 1; vertical velocities varied from 9.9 m s 1 upward flow to 4.5m s 1 downward flow. The observations from these fires contribute to the overall understanding of energy transport in wildland fires.
- You may send email to email@example.com to request a hard copy of this publication.
- (Please specify exactly which publication you are requesting and your mailing address.)
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationButler, B.; Teske, C.; Jimenez, D.; O'Brien, J.; Sopko, P.; Wold, C.; Vosburgh, M.; Hornsby, B.; Loudermilk, E. 2016. Observations of energy transport and rate of spreads from low-intensity fires in longleaf pine habitat-RxCADRE 2012. International Journal of Wildland Fire, Vol. 25(1): 76-89. 14 p. 10.1071/WF14154
Keywordsenergy transport, field measurements, fire behavior, fire modeling
- Characterization of convective heating in full scale wildland fires
- A portable system for characterizing wildland fire behavior
- Remote measurement of energy and carbon flux from wildfires in Brazil
XML: View XML