Behaviour of a Very Fast Grassland Wildfire on the Riverine Plain of Southeastern Australia.
Behaviour of a Very Fast Grassland Wildfire on the Riverine Plain of Southeastern Australia.
复制标题
澳大利亚东南部河流平原非常快速的草原野火的行为。
DOI：
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发表时间：
1991
期刊：
影响因子：
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通讯作者：
J. Noble
中科院分区：
文献类型：
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作者：
J. Noble
在新南威尔士州西部，一场草原野火烧毁了12万公顷的土地，造成大量羊和围栏的损失。火灾的蔓延速度被准确地记录为6.4米每秒1(23公里每小时1)，当它穿过一个属性时，根据后来在未燃烧的地块上测量的燃料负荷的保守估计，火灾的强度计算为大约20,000千瓦每小时1。这一蔓延速度是澳大利亚南部草原野火记录的最高速度之一，是野火行为模型的重要基准点。麦克阿瑟马克4火险模型提供了相当合理的蔓延速度预测，然而，马克5模型严重低估了这次和其他两次草原野火的蔓延速度。
A grassland wildfire burnt 120,000 ha in the western Riverina of New South Wales and caused exten sive losses of sheep and fencing. The rate of spread of the fire was accurately recorded at 6.4 m s-1 (23 km h-1) as it traversed one property and on the basis of conservative estimates of fuel loads measured later on unburnt patches, a fireline intensity was calculated at around 20,000 kW m-1. This rate of spread is one of the highest recorded for grassland wildfires in southern Australia and represents an important datum point for wildfire behaviour models. Quite reasonable predictions of rate of spread were pro vided by the McArthur Mark 4 fire danger model, how ever, the Mark 5 model seriously underestimated rate of spread for this and two other grassland wildfires.