نتایج جستجو برای: wildfire spread

تعداد نتایج: 112773  

Journal: :caspian journal of environmental sciences 2012
a mahdavi

wildfire in forests and rangelands, apart from its initiating causes, is considered as an ecological disaster. zoning natural areas according to their susceptibility to fire helps to put off operations and reduces catastrophic losses caused through a wise management plan. in this study, the zoning map of wildfire risk in forest and rangeland areas has been produced using gis, analytical hierarc...

Journal: :Remote Sensing 2022

The objectives of this study were to evaluate spatial sampling and statistical aspects landscape-level wildfire rate spread (ROS) estimates derived from airborne thermal infrared imagery (ATIR). Wildfire progression maps ROS repetitive ATIR image sequences collected during the 2017 Thomas Detwiler events in California. Three separate landscape unit (LSU) sizes used extract remotely sensed envir...

2016
Renata M.S. Pinto Akli Benali Ana C. L. Sá Paulo M. Fernandes Pedro M. M. Soares Rita M. Cardoso Ricardo M. Trigo José M. C. Pereira

BACKGROUND An approach to predict fire growth in an operational setting, with the potential to be used as a decision-support tool for fire management, is described and evaluated. The operational use of fire behaviour models has mostly followed a deterministic approach, however, the uncertainty associated with model predictions needs to be quantified and included in wildfire planning and decisio...

2015
Ilkay Altintas Jessica Block Raymond A. de Callafon Daniel Crawl Charles Cowart Amarnath Gupta Mai H. Nguyen Hans-Werner Braun Jürgen P. Schulze Michael Gollner Arnaud Trouve Larry Smarr

Wildfires are critical for ecosystems in many geographical regions. However, our current urbanized existence in these environments is inducing the ecological balance to evolve into a different dynamic leading to the biggest fires in history. Wildfire wind speeds and directions change in an instant, and first responders can only be effective if they take action as quickly as the conditions chang...

2011
Maria Vittoria Avolio William Spataro Salvatore Di Gregorio Giuseppe A. Trunfio

Since fuel load is a major factor influencing wildfire risk, the standard approach to build related hazard maps is mainly grounded on land-cover data. However, the risk level is also influenced by other factors interacting nonlinearly, such as wind, fuel moisture, ignition sources and topography. For these reasons, an increasingly used approach for the computation of hazard maps involves the ex...

Journal: :Journal of the Korea Institute of Information and Communication Engineering 2016

Journal: :Fire 2022

Wildfires are complex phenomena, both in time and space, ecosystems. The ability to understand wildfire dynamics predict the behaviour of propagating fire is essential at same a challenging practice. A common approach investigate such phenomena making most power numerical models simulators. Improved more accurate methods for simulating indispensable managing suppression plans controlled burns, ...

1997
JAN W. VAN WAGTENDONK

Fuel treatments are necessary in many vegetated areas of the Sierra Nevada to mitigate the effects of decades of fire suppression and land-management activities on fuel accumulations and understory canopies. Treating fuels will reduce the severity of wildfires and, as a result, the threat to human lives, the destruction of property and valuable resources, and the alteration of natural fire regi...

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