Wildfire
Under wildfire (also ground fire called) is defined as a fire , which runs along the ground.
Word origin and colloquial language
The word 'wildfire' has been used in German since the 17th century and originally referred to a pile of gunpowder or black powder used as a kind of ignition means . Today's broadcast was derived from this - the saying something spreads like wildfire , which refers to the rapid spread of news and news - in the sense of 'rapid spread'.
Military importance
In the 18th century, wildfire also existed as a volley along a line of fire , as "the way soldiers fire where one rifle is fired at speed after another". This was trained as a defense of the infantry against cavalry attacks , against which closed volleys were generally ineffective. This is still common as a special sequence of shots in traditional gun shooting .
Fire theory
In wild fires, a fire forms that moves across an area and is covered by vegetation, leaves, fallen branches and the like. Ä. nourishes. Wildfire in a full fire can reach very high speeds, but can also remain in a fire zone for a long time as a smoldering fire.
Wild fires in the open are field fires such as steppe fires or heather fires. However, they can also spread to forest fires in the ground vegetation and the forest litter in forests by switching to treetop fire or a total fire . In addition to lightning strikes, wildfires are by far the most common initial fires in forest fires, whether of natural origin, caused by human inattention or arson . Wildfire can cause forest fires to leap across unforested areas. For this reason, the regular maintenance of fire breaks laid out as fire protection is of enormous importance. A forest fire easily overcomes discredited firebreaks due to arid growth.
Wildfire is fought by trying to drive them together in a wedge shape. For this purpose, protective trenches are dug in the direction of the fire or the same is fought with fire pats or water . Since embers are easily overlooked, a fire watch must often be maintained.
In addition, wildfire is also used in a controlled manner to keep fire-endangered open land, undergrowth and the firebreaks themselves free of unwanted vegetation and dead wood . It is also widespread in agriculture as a form of slash and burn for raine , but in Central Europe it is generally prohibited or only permitted under certain conditions because there is a risk of an uncontrolled embankment fire .
Web links
Individual evidence
- ↑ a b sentence based on Kluge Etymological Dictionary of the German Language , 24th edition, 2002
- ↑ Adelung: Grammatical-Critical Dictionary of High German Dialect , Volume 2. Leipzig 1796, pp. 1936–1937, online at http://www.zeno.org/Adelung-1793/A/Lauffeuer,+das , accessed November 17 2008
- ^ Voluntary fire brigade City of Salzburg (ed.): Info forest fires . ( feuerwehr-stadtsalzburg.at [PDF; accessed on November 19, 2008]).