Type
Topic
Region
Year
Displaying 1 - 11 of 11
[no description entered]
Person:
Year: 1980
Type: Document
Source: TTRS
Topic(s): Aquatic, Emissions and Smoke, Fire Ecology, Models, Prescribed Fire
Region(s): Southern
Keywords: air quality, everglades, Florida, particulates, south Florida, wetlands, wildfires
This report outlines the development (section 2) and testing (section 3) of a simple mathematical dispersion model, — based on Gaussin plume models for air polution, — for predicting smoke concentration and visibility reduction downwind from prescribed burns in forests. The data…
Person:
Year: 1980
Type: Document
Source: TTRS
Topic(s): Fire Ecology, Emissions and Smoke, Fire Behavior, Fuels, Models, Prescribed Fire
Region(s): International
Keywords: air quality, Australia, distribution, flame length, forest management, fuel loading, pollution, rate of spread, scorch, smoke management, statistical analysis, western Australia, wind
In Australia the long-term ecolgical consequences of forest practices which lead to nutrient depletion may be very serious. In the absence of fertilization, cumulative nutrient depletion associated with intensive management (involving clear-felling, slash burning, and short…
Person:
Year: 1980
Type: Document
Source: TTRS
Topic(s): Fire Ecology, Emissions and Smoke, Fuels, Hazard and Risk, Models, Prescribed Fire
Region(s): International
Keywords: ash, Australia, bibliographies, biomass, clearcutting, combustion, decay, disturbance, duff, ecosystem dynamics, erosion, eucalyptus, evapotranspiration, fertilization, fine fuels, forest management, fuel accumulation, humus, ignition, leaching, litter, logging, mineral soils, nitrogen fixation, nutrient cycling, nutrients, organic matter, particulates, precipitation, regeneration, sclerophyll forests, seedlings, site treatments, slash, slash and burn, soil erosion, soils, Tasmania, temperature, understory vegetation, wildfires
Generalizations of the 'opacity method' of analyzing visible smoke-plume diffusion are presented. The horizontal dispersion length, sigma-y, is derived from the outline of a plume having an arbitrary vertical concentration distribution. The vertical dispersion length, sigma-z,…
Person:
Year: 1980
Type: Document
Source: TTRS
Topic(s): Fire Ecology, Emissions and Smoke, Models
Region(s): Southern
Keywords: air quality, distribution, photography, pollution, remote sensing, smoke behavior, smoke effects, smoke management, Tennessee, weather observations, wind
[no description entered]
Person:
Year: 1980
Type: Document
Source: TTRS
Topic(s): Emissions and Smoke, Fire Ecology, Fuels, Models, Prescribed Fire
Region(s): Southern
Keywords: air quality, fire intensity, fuel types, Ilex glabra, north Florida, particulates, pine forests, Serenoa repens, smoke management, south Georgia
Particulate-matter emission factors and Byram's fire-intensity values were computed for experimental backfires in pine-litter and palmetto-gallberry fuels in the Southeast. The combined data for both fuel types were in reasonable agreement with the theoretical prediction that…
Person:
Year: 1980
Type: Document
Source: FRAMES, TTRS
Topic(s): Emissions and Smoke, Fire Behavior, Fuels, Models
Region(s): Southern
Keywords: fire intensity, PM - particulate matter, emission factors, emission factor models, backfire, fuel moisture, fuel types, Ilex glabra, particulates, Serenoa repens, smoke management
In compartment fires a situation often develops in which a layer of oxygen-depleted gases builds up in the upper part of the enclosure. The downward reach of such a layer can be sufficient to make its lower boundary interact with the fire plume. In that case, while the…
Person:
Year: 1980
Type: Document
Source: FRAMES
Topic(s): Emissions and Smoke, Fire Behavior, Models
Region(s): Unknown
Keywords: burning rate, fire plumes, flame characteristics
This paper reports relationships between emission factor (EFp) and fire intensity for burns in the palmetto-gallberry fuel type where fireline intensities ranged up to 1,750 kw m^-1 . A model that is presented has application in determining the optimal prescription for…
Person:
Year: 1980
Type: Document
Source: FRAMES
Topic(s): Emissions and Smoke, Fuels, Models
Region(s): Southern
Keywords: carbon balance, fire intensity, emission factor, fuel type, PM - particulate matter, palmetto-gallberry fuel complex
Predictive equations for duff reduction and mineral soil exposure by prescribed fire are presented. An explanation is suggested for the dependence of duff combustion on surface fuel combustion. Surface fire duration and fuel moisture estimates of the National Fire-Danger Rating…
Person:
Year: 1980
Type: Document
Source: FRAMES, TTRS
Topic(s): Administration, Emissions and Smoke, Fire Behavior, Fire Ecology, Fire Effects, Fire Prevention, Fuels, Hazard and Risk, Models, Planning, Prescribed Fire, Weather
Region(s): Northwest
Keywords: duff, FERA - Fire and Environmental Research Applications Team, site preparation, air quality, chemistry, coniferous forests, dominance, fine fuels, erosion, fire danger rating, fire management, fire management planning, fire weather, forest management, fuel loading, fuel moisture, fuel types, heat, heat effects, ignition, mineral soil, post-fire recovery, precipitation, Pseudotsuga menziesii, regeneration, season of fire, seeds, site treatments, smoke management, soils, statistical analysis, surface fires, surface fuels, understory vegetation, water quality, Oregon, Washington
Flexible polyurethane foams that are char formers are capable of smoldering combustion. The smoldering process is an oxygen-limited, heterogenous oxidation process that slowly transforms the foam to a brittle, black replica of itself; for the foam examined here, the resultant…
Person:
Year: 1980
Type: Document
Source: TTRS
Topic(s): Fire Ecology, Emissions and Smoke, Fuels, Models
Region(s): Eastern
Keywords: char, chemistry, combustion, computer programs, convection, energy, foam, gases, heat, ignition, New England, New Jersey, N - nitrogen, radiation, smoke behavior, temperature
The mass burning rates of several polymer systems, including polycarbonates, polysystrenes, polyethylenes, and wood were determined for steady-state combustion in an apparatus similar to that constructed at Factory Mutual Research. The work was undetaken to determine the…
Person:
Year: 1980
Type: Document
Source: TTRS
Topic(s): Emissions and Smoke, Fire Behavior, Fuels, Hazard and Risk, Models
Region(s): Eastern
Keywords: burning intervals, char, chemical elements, combustion, fire control, flammability, gases, heat, Michigan, O - oxygen, wood