Chapter 6 Flashcards
Define decision time horizon
The distance into the future a decision-maker looks to when evaluating the consequences of a proposed action.
FBP can only support decisions made in the time horizon of a single day. No overnight capabilities.
Define diurnal weather (daily pattern)
Variations overthe course of a day in meteorological parameters such as temperature and relative humidity. Result from rotation of Earth/variation in radiation.
Define local standard time (vs daylight time)
Local time in a country or region when daylight saving time is not in use.
Define fire containment strategy
-Used to limit fire within a designated containment area
-Use of landscape level breaks in areas of dense/flammable veg
-Designed to impede fire spread
List three questions managers ask about actual or predicted new fires
1) What resources will be effective
2) Are there values/ppl at risk
3) What quantity of resources is needed
List two methods for adjusting FFMC for a prediction time either before or after the peak burning period (16 LST)
1) Adjust to an hourly value using Lawson’s diurnal method
2) Use hourly FFMC calculations developed by Van Wagner
Combine with updated wind speed measurement to produce adjusted ISI (must match to time of day prediction)
List the main sections commonly included in a fire case study outline (5)
1) Introduction
2) Fire chronology and development
3) Details of fire enviro/behavior
4) Analysis of fire behavior
5) Concluding remarks
Describe the role of a FBAN
Collect weather data, develop strategic/tactical fire behavior info, predict fire growth, interpret fire.
Make predictions about fire behavior from analysis of current/forecasted state of fire environment.
Describe how and why wave propagation is used to simulate fire growth
Addresses fuel heterogeneity. Uses changes in wavelet size to capture changes in fuel type. Wavelet shape and orientation capture wind-slope vector.
Describe why Parks Canada ignited the Syncline fire
To create a fuel-break that would prevent future wildfires from crossing the park boundary in order to protect the nearby town of Hinton and provincial forest resources. And to restore natural fire regime.
Describe the purpose of a burn out operation + potential negative impacts of conducting burn out
A fire suppression operation where fire is set along the inside edge of a control line or natural barrier to consume unburned fuel between the line and the fire perimeter, thereby reinforcing the existing line and speeding up the control effort. Generally a limited, small-scale routine operation as opposed to backfiring.
Lose control of fire?
Describe the value of, approaches to, and practical uses of fire case studies
- Enhance understanding of the fire environment
- Invaluable tool for assessing the performance of the FBP system
