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Sunday, May 3, 2020 | History

1 edition of Spotting distance from wind-driven surface fires found in the catalog.

Spotting distance from wind-driven surface fires

Carolyn H. Chase

Spotting distance from wind-driven surface fires

extensions of equations for pocket calculators

by Carolyn H. Chase

  • 214 Want to read
  • 8 Currently reading

Published by U.S. Dept. of Agriculture, Forest Service, Intermountain Forest and Range Experiment Station in Ogden, UT .
Written in English

    Subjects:
  • Forest fires,
  • Detection,
  • Prevention and control,
  • Mathematical models

  • Edition Notes

    StatementCarolyn H. Chase
    SeriesResearch note INT -- 346, Research note INT -- 346.
    ContributionsIntermountain Forest and Range Experiment Station (Ogden, Utah)
    The Physical Object
    Pagination21 p. :
    Number of Pages21
    ID Numbers
    Open LibraryOL25602629M
    OCLC/WorldCa11737879

      The study consisted of full scale, live fire experiments, in both the NIST Large Fire Laboratory and high rise structures, in an effort to better understand this phenomenon and to develop strategies and tactics that will enable firefighters to survive Author: Daniel M. Madrzykowski, Stephen Kerber. (c) Wind-driven vs. plume-dominated crown fires. The following discussion is taken from Rothermel (). i. Wind-driven crown fire. A running crown fire can develop when winds blow flames from torching trees into adjacent tree crowns, or slope effectively accomplishes the same thing. Strong winds are the major force pushing the fire,File Size: 1MB.

    The Camp Fire was the deadliest and most destructive wildfire in California history and the most expensive natural disaster in the world in in terms of insured losses.. Named after Camp Creek Road, its place of origin, the fire started on November 8, , in Northern California's Butte d by a faulty electric transmission line, the fire originated above several communities Location: Butte County, California.   Surface fuel loadings and predicted fire behavior for vegetation types in the northern Rocky Mountains James K. Brown, Collin D. Bevins Progress toward locating lightning fires.

    At around a number of subsidiary fires started by long distance spotting were spreading in forest fuels largely independent of the main zone of fire activity. These fires, spreading in broken topography had fully developed fire fronts with widths up to m and Cited by: A year fire service veteran and a highly regarded national and international instructor, author, lecturer and fire officer, he is a distinguished authority on building construction issues affecting the fire and emergency services and has traveled throughout the United States and internationally delivering training programs on building construction, command management and operational safety.


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Spotting distance from wind-driven surface fires by Carolyn H. Chase Download PDF EPUB FB2

Equations are presented by which to calculate the maximum firebrand particle lofting height from wind-driven line fires in surface fuels. Variables used are the fuel type, described as one of twelve stylized models used for fire behavior prediction, the fire intensity, and the mean windspeed at 10 m height.

Using the maximum particle lofting height, downwind drift of the. Extends equations for calculating the maximum spot fire distance to include wind-driven fires burning in surface fuels as a firebrand source.

Predictions are based upon prevailing windspeed, vegetational cover, and local terrain. The equations can be used on a programmable pocket calculator. Previous methods of calculating spotting distance from torching trees and burning.

Get this from a library. Spotting distance from wind-driven surface fires: extensions of equations for pocket calculators. [Carolyn H Chase; Intermountain Forest.

Potential spotting distance from wind-driven surface fires. [Ogden, Utah]: U.S. Dept. of Agriculture, Forest Service, Intermountain Forest and Range Experiment Station, (OCoLC) F.

Albini, “Potential spotting distance from wind-driven surface fires,” Research Note INT, US Department of Agriculture, Forest Service Intermountain Forest and Range Experiment Station, Ogden, Utah, USA, View at: Google ScholarCited by: 3.

Flame characteristics of wind-driven surface fires Article in Canadian Journal of Forest Research 16(6) February with 71 Reads How we measure 'reads'. Firebrands and spotting ignition in large-scale fires Int.

Wildland Fire Strong wind can combine with low relative humidity to increase the risk of spot fires. Carol Chase. 17 Jan Paperback. US$ Add to basket. Case Files for Basic Trial Advocacy.

Timothy Perrin. 16 Jun Paperback. unavailable. Notify me. Spotting Distance from Wind-Driven Surface Fires.

Carolyn H Chase. 27 Oct Hardback. unavailable. Try AbeBooks. Your Seven Year Old. Louise Bates Ames. 01 Mar Paperback. Fire containment equations for pocket calculators - Ebook written by Frank A.

Albini, Carolyn H. Chase, Intermountain Forest and Range Experiment Station (Ogden, Utah). Read this book using Google Play Books app on your PC, android, iOS devices. Download for offline reading, highlight, bookmark or take notes while you read Fire containment equations for pocket calculators.5/5(1).

Chase CH () Spotting distance from wind-driven surface fires – extensions of equations for pocket calculators.

USDA Forest Service, Intermountain Forest and Range Experiment Station, Research Note INT-RN (Ogden, UT)Cited by:   Albini, F. Potential spotting distance from wind-driven surface fires.

Technical report, Intermountain Forest and Range Experiment Station, Cited by: 1. The SPOT module includes models for maximum spotting distance from torching trees (Albini ; Chase ), burning piles (Albini ) and wind-driven surface fires (Albini a, b; Chase ; Morris ).

In each case, the lofting height of potential firebrands is found from the flame by:   An experimental laboratory study on the probability of ignition and ignition time delay of new fires for 11 pairs of burning embers and fuel beds of species common in Mediterranean forests is presented.

For the no wind conditions of the present tests it was found that positive ignition was achieved only for embers with flaming combustion.

Fuel bed moisture content was identified as a very Cited by: factor that differentiates these fires from others is the wind. Therefore these fires are named “wind driven fires”. While designing the tests the investigators were already thinking about alternative ways to attack these fires.

Minimal quantities of waterFile Size: 1MB. Convective heating is the biggest problem dropping some distance.

Wind and convection are a problem. In the northern hemisphere what happens Fire burning on the surface, but periodically igniting the crown of a single or small group of trees or shrubs before returning to the surface.

Spotting in wind driven fires is. Downwind, and is a. Cold fronts have a much more dramatic impact on fires than a warm front, but either one can bring changes in wind direction and intensity. INFLUENCES: Gusty winds changing direction sharply and distinctly-Surface winds alter natural convection currents and cause longer horizontal flames resulting in.

The fires running before a Santa Ana wind condition are wind-driven fires. Fires burning in old timber, as that in northern California inseemed to defy topography; they were fuel fires.

Many fires, including prescribed burning operations, are affected mostly by topography, and so are termed topography fires. “A strategy to model the average fireline movement of a light to medium intensity surface forest fire.” Proc.

2nd Intl. Conf. Forest Fire Research, Coimbra pp Maximum spot fire distances for burning piles and wind-driven surface fires in non-canopied fuel types based on Albini's models. Alexander, M.E. Year: Catalog ID: Available from: Northern Forestry Centre CFS Availability: PDF (download). The influence of changing orbital parameters and surface boundary conditions on climate simulations for the p years.

Journal of the Atmospheric Sciences. A fractured (bent over by the wind) column indicates a wind­ driven fire. Wind-driven fires can pose serious threats to safety as the fire grows.

Spotting can become long range creating new fires ahead of the main fire. However, direction and rate of spread is more predictable.

7.The SPOT subroutine of the Rothermel-derived BEHAVE fire prediction model (Andrews and Chase, ) was used to estimate maximum spotting distances from wind-driven surface fires for each of the three wind speed classes considered in EMBYR.

The maximum distance traveled by firebrands generated by SPOT was assumed to represent the 99th Cited by: lightning fires • Probability of x number of human-caused fires •Rate of spread •Fire intensity •Flame height •Flame length •Flame depth •Residence time •Burn-out time •Fire shape & growth •Fire acceleration •Fuel consumption •Spotting distance etc.