International Journal of Wildland Fire International Journal of Wildland Fire Society
Journal of the International Association of Wildland Fire
International Journal of Wildland Fire

International Journal of Wildland Fire

Volume 26 Number 8 2017

Data compiled from reports of firefighter entrapments in the USA were used to build statistically based models of wildland firefighter safety and survival zone separation distance. Model results reinforced the importance of fire shelters and produced predictions of separation distance from flames that in some cases were significantly greater than suggested by physically based models.

WF16178Direct estimation of Byram's fire intensity from infrared remote sensing imagery

Joshua M. Johnston, Martin J. Wooster, Ronan Paugam, Xianli Wang, Timothy J. Lynham and Lynn M. Johnston
pp. 668-684

Methods for remotely measuring Byram’s fire intensity with infrared cameras are developed. Experimental data are collected to validate the methods. Results suggest it is possible to use infrared imagery to quantify fire intensity without the need for ground sampling.

WF17035Downdraft outflows: climatological potential to influence fire behaviour

Brian E. Potter and Jaime R. Hernandez
pp. 685-692

Several types of wind shifts dangerous to wildland firefighters derive from convective downdrafts and outflows. A climatological summary of the potential for evaporation-driven downdrafts in the continental United States is presented, with discussion of implications for forecasting and operations.

WF17010An experimental study on thermal radiation of fire whirl

Pengfei Wang, Naian Liu, Yueling Bai, Linhe Zhang, Kohyu Satoh and Xuanya Liu
pp. 693-705

Using a unique fire whirl facility made of an air curtain apparatus, the correlation of the flame emissivity of fire whirl with flame diameter was determined by an infrared method for the first time. It was verified that the flame radiation of the fire whirl can be accurately predicted by the multizone flame model with the use of the measured flame emissivity.

WF16169Balancing uncertainty and complexity to incorporate fire spread in an eco-hydrological model

Maureen C. Kennedy, Donald McKenzie, Christina Tague and Aubrey L. Dugger
pp. 706-718

Fire spread is integrated with an eco-hydrological model designed to predict physical and biological watershed dynamics. The challenges of matching the requirements of predicting fire spread with the outputs of a model not designed for fire are evaluated and overcome in model design.

This paper examines wildfires reported in the NFIRS database, a primary database for fires in the US, and compares it with the satellite-based MODIS fire detection data and the CAL FIRE FRAP geodatabase to understand underreporting of wildland fires. The paper discusses a series of large wildland fires and uses a Generalised Linear Model to identify the conditions where large wildfires go unreported.

Wildfires represent a threat to many communities nationwide. Random parameter logit model results suggest that Florida minority homeowners who perceived they live in low- to moderate-risk communities prefer both types of fire mitigation programs. In addition, homeowners who perceived they live in high-risk communities also prefer both the public and private programs, but their WTP values are lower than in low- to moderate-risk communities.

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