EXPERIMENTS ON THE USE OF CHEMICALS IN FOREST FIRE SUPPRESSION

1937 ◽  
Vol 13 (3) ◽  
pp. 458-464
Author(s):  
J. G. Wright
Keyword(s):  
Forest Fire ◽  
Fire Suppression

Preliminary assessment of night vision goggles in airborne forest fire suppression

2007 ◽  
Author(s):  
Sion Jennings ◽  
Greg Craig ◽  
Rob Erdos ◽  
Don Filiter ◽  
Bob Crowell ◽  
...  
Keyword(s):  
Forest Fire ◽  
Fire Suppression ◽  
Night Vision ◽  
Preliminary Assessment

The Examination of the Economical Effectiveness of Forest Fire Suppression by Using Theoretical Fire Spread Models

2016 ◽  
Vol 15 (1) ◽  
pp. 85-92
Author(s):  
Ágoston Restás
Keyword(s):  
Forest Fire ◽  
Economic Efficiency ◽  
Fire Suppression ◽  
Fire Spread ◽  
Concentric Circle ◽  
Model Based ◽  
Actual Fire ◽  
Concentric Circles ◽  
Circle Model ◽  
Rectangular Model

It is commonly known that firefighting is very expensive solution; therefore it isn’t useless to study it by the criteria of efficiency. But the meaning of efficiency for fire managers can be different from the meaning of efficiency for economists. From an economic viewpoint, it is stricter than from a technical view. Method: this research used geometric aspects of the fire spread created rectangular and concentric circles models and used basic mathematic calculations and logical conclusions. Results and discussion: The rectangular model shows the criteria of economic efficiency of firefighting. Moreover, the results from rectangular model can be transferred also to the section of concentric circles model. Based on the concentric circle model we can define both the economic efficiency of fighting forest fire and minimal criteria of successful suppression expressed by the elementary information we have regarding the actual fire.

Changes in forest fire frequency in Kootenay National Park, Canadian Rockies

1990 ◽  
Vol 68 (8) ◽  
pp. 1763-1767 ◽  
Author(s):  
Alan M. Masters
Keyword(s):  
Forest Fire ◽  
Rocky Mountains ◽  
National Park ◽  
Fire History ◽  
Fire Suppression ◽  
Fire Frequency ◽  
Ice Age ◽  
Distribution Analysis ◽  
Fire Cycle ◽  
Time Since Fire

Time-since-fire distribution analysis is used to estimate forest fire frequency for the 1400 km2 Kootenay National Park, British Columbia, located on the west slope of the Rocky Mountains. The time-since-fire distribution indicates three periods of different fire frequency: 1988 to 1928, 1928 to 1788, and before 1788. The fire cycle for the park was > 2700 years for 1988 to 1928, 130 years between 1928 and 1788, and 60 years between 1778 and 1508. Longer fire cycles after 1788 and 1928 may be due, respectively, to cool climate associated with the Little Ice Age and a recent period of higher precipitation. Contrary to some fire history investigations in the region, neither a fire suppression policy since park establishment in 1919, nor the completion of the Windermere Highway through the park in 1923 appear to have changed the fire frequency from levels during pre-European occupation. Spatial partitioning of the time-since-fire distribution was unsuccessful. No relationship was found between elevation or aspect and fire frequency. Key words: fire cycle, Rocky Mountains, climate change.

A Numerical Study of Forest Fire Progression and Fire Suppression by Aerial Fire Fighting

2004 ◽  
Author(s):  
Kohyu Satoh ◽  
Kunio Kuwahara ◽  
K. T. Yang
Keyword(s):  
Forest Fire ◽  
Forest Fires ◽  
High Speed ◽  
Laboratory Experiments ◽  
Numerical Study ◽  
Water Drop ◽  
Fire Suppression ◽  
Critical Issue ◽  
Fire Fighting ◽  
Cfd Simulations

Forest fires are of common occurrence all over the world, which cause severe damages to valuable natural resources and human lives. In the recent California Fire, which burned 300,000 hectors of land, the disaster danger could reasonably be predicted, but early control of fires by means of aerial fire fighting might have been failed in that situation. Also in Japan, there are similar problems in the aerial fire fighting. Most forest fires occur in the daytime and the fires are freely in progress without any control during the nighttime. Therefore, it is important to attack the fires when there is daylight. The water dropped by helicopters is not always sufficient to control fires, since the quantity of water that can be carried aloft is a critical issue. Large amount of water can be dropped from aircrafts, but the high-speed flight of aircrafts may be dangerous in the mountain, where tall trees and steel towers with electric wires may exist. Therefore, those aircrafts have to fly at much higher altitudes than helicopters, while the water drop at high altitudes changes water into mist in the air. The objective of this study is to examine the methods to prevent the ignition by firebrands in the downwind area by applying water through the aerial fire fighting. However, tests by real aircrafts to obtain such information would be too costly. Therefore, the patterns of water drop from aircrafts were examined in CFD simulations, together with the investigation of needed water drop rate based on the forest fire statistics, the previous real aircraft tests and laboratory experiments. It has been found in the simulations that the water supply with the water density of 2 L/m2 is effective to control fires and the patterns of dropping water are reasonable.

scholarly journals METHOD FOR DETERMINING THE OPTIMAL LOCATION OF FIREFIGHTING EQUIPMENT FOR LOCALIZATION OF GROUND FOREST FIRES

2021 ◽  
Vol 2 (446) ◽  
pp. 144-150
Author(s):  
A. A. Renkas ◽  
V. V. Popovych ◽  
A. M. Dominik
Keyword(s):  
Forest Fire ◽  
Forest Fires ◽  
Fire Suppression ◽  
Voronoi Diagrams ◽  
Optimal Location ◽  
The State ◽  
State Enterprise ◽  
Urgent Problem ◽  
Fire Departments

Localization and forest fire suppression is an urgent problem for the whole world. Given the heterogeneity of forests on the planet, approaches to modeling the spread of fires and their extinguishing are different. In this article a method for determining the required number of forces and means for the localization of ground forest fires is offered, taking into account the location of firefighting equipment in forests. To forecast the spread of fire, equidistant places from the fire departments in forests were chosen using Voronoi diagrams. The results of the calculation make it possible to conclude whether there are enough available forces and means to localize the predicted fire and to suggest additional firefighting equipment locations. The use of Voronoi diagrams for the State Enterprise "Zhovkva Forestry" in the Lviv region showed 12 dangerous areas, which are located the furthest from the fire departments. The method for determining the optimal location of firefighting equipment was applied to the Butynskyi forestry in Zhovkva forestry enterprise. Reducing the time of free spread of ground forest fires by 25% using rational placement of firefighting equipment and machinery, allows to reduce the number of employees for its localization by 53.8%.

Six Decades of Forest Fire Science in Canada

1990 ◽  
Vol 66 (2) ◽  
pp. 133-137 ◽  
Author(s):  
C. E. Van Wagner
Keyword(s):  
Forest Fire ◽  
Prescribed Fire ◽  
Fire Ecology ◽  
Fire Management ◽  
Fire Suppression ◽  
Fire Behavior ◽  
Fire Science ◽  
Wide Range ◽  
Related Science ◽  
Changing Attitudes

This account of the history and accomplishments of forest fire research in Canada begins with a few basic statistics, and some background on changing attitudes to fire. A historical note on the contributions of Wright and Beall in the 1930's and 1940's follows. Fire science is then divided into six diverse categories: fire behavior, fire management systems, fire ecology, prescribed fire, fire economics, and fire suppression, with a note on developments and accomplishments in each. The references given are examples of the wide range of activity within the whole field of fire-related science and technology, but do not constitute a bibliography.

Forest Fire Control Aircraft in Canada

1964 ◽  
Vol 68 (644) ◽  
pp. 546-552 ◽  
Author(s):  
D. G. Fraser
Keyword(s):  
Federal Government ◽  
Forest Fire ◽  
Forest Fires ◽  
Fire Suppression ◽  
Forest Resources ◽  
Economic Losses ◽  
Fire Control ◽  
National Programme ◽  
Recent Developments ◽  
Forest Lands

SummaryThe economic losses occasioned by forest fires in Canada are serious. Although the forest lands are largely under the jurisdiction of the provincial governments the forest resources are of national interest. For this reason the federal government, through the Department of Forestry, carries out a national programme of forestry research. The research in forest fire control encompasses the use of aircraft. This paper reviews the early developments in the use of aeroplanes in Canadian forestry operations. The more recent developments of direct fire suppression techniques, such as water dropping, are discussed in detail.

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