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Ember attack
An ember attack is a naturally occurring event. During a bushfire, burning parts of trees such as twigs, branches or leaves become temporarily airborne and can be carried away upwind of the bushfire. An 'ember attack' occurs when many embers are carried by winds in a cluster. The Stringybark species of Eucalypt is particularly notorious for contributing large flaming sections of bark that due to their size, weight and shape, can be carried up to several kilometres away. The movements of embers from a bushfire are the primary cause of spotfires, which contribute to the continued spread of a bushfire.
They mostly occur close to the source of the fire, usually following a heat explosion within vegetation in which material is ejected from the explosion and creates a cluster of embers, or during high winds in which burnt material is carried away from flames before it can be fully combusted. An ember attack can be an erie sight in dark conditions as the glowing embers leave a small light trail in our vision similar to that of a camera set to a long exposure time. Images of ember attacks caught on film are often used by the mass media to aid in the depiction of a bushfire as a dramatic event.
==Effect on firefighting==
Ember attacks have the potential to start small fires ahead of the main fire trapping firefighters between the two fires. They can also lodge themselves within firefighting equipment, clothing and vehicles. Ember attacks are particularly dangerous to an individual's exposed skin and face.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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