Version 1
: Received: 20 July 2023 / Approved: 20 July 2023 / Online: 21 July 2023 (10:20:53 CEST)
How to cite:
Ozaki, M.; Williamson, G.; Fox-Hughes, P.; Love, P.; Aryal, J. Dynamic Wind Effect on Fireline Intensity in Rugged Terrain. Preprints2023, 2023071448. https://doi.org/10.20944/preprints202307.1448.v1
Ozaki, M.; Williamson, G.; Fox-Hughes, P.; Love, P.; Aryal, J. Dynamic Wind Effect on Fireline Intensity in Rugged Terrain. Preprints 2023, 2023071448. https://doi.org/10.20944/preprints202307.1448.v1
Ozaki, M.; Williamson, G.; Fox-Hughes, P.; Love, P.; Aryal, J. Dynamic Wind Effect on Fireline Intensity in Rugged Terrain. Preprints2023, 2023071448. https://doi.org/10.20944/preprints202307.1448.v1
APA Style
Ozaki, M., Williamson, G., Fox-Hughes, P., Love, P., & Aryal, J. (2023). Dynamic Wind Effect on Fireline Intensity in Rugged Terrain. Preprints. https://doi.org/10.20944/preprints202307.1448.v1
Chicago/Turabian Style
Ozaki, M., Peter Love and Jagannath Aryal. 2023 "Dynamic Wind Effect on Fireline Intensity in Rugged Terrain" Preprints. https://doi.org/10.20944/preprints202307.1448.v1
Abstract
Although mountain areas account for approximately one fifth of the terrestrial surface, there has been less research focused on fire in these areas compared to lowlands. Mountain fires have distinct behavior due to dynamic winds interacting with the terrain, which can influence the fireline intensity and propagation. For the sake of fire safety of fire crews, it is essential to know how difficult to control the fire is in the mountain regions, with fireline intensity providing a useful indicator of risk and suppressibility. We studied one of the major disasters, wildfire, in Australia in such a highland by using the Great Pine Tier Fire, which occurred 15th January in 2019, ending up burning approximately 511.86km2. Weather and fire intensity at pseudo weather stations located at key points of fire progression were analyzed by wind vector maps and numerical weather model vertical sounding (NWMVS). Fire propagation was then simulated in Prototype 2, a fire simulator capable of detecting the potential for lateral fire channeling (LFC), and simulating fireline intensity using Australian vegetation sub-models. We found that the synoptic wind appeared to be modified by the interaction with the terrain in windward and the fire intensified the most in its leeward. In practice, the fire moved out of the valley axis and up its sidehill by following the wind which had been modified by local vertex of the curved valley axis before reaching this location.
Environmental and Earth Sciences, Atmospheric Science and Meteorology
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
