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Articles 1 - 4 of 4
Full-Text Articles in Social and Behavioral Sciences
The Influence Of Prescribed Fire On The Extent Of Wildfire In Savanna Landscapes Of Western Arnhem Land, Australia, Owen F. Price, Jeremy Russell-Smith, Felicity Watt
The Influence Of Prescribed Fire On The Extent Of Wildfire In Savanna Landscapes Of Western Arnhem Land, Australia, Owen F. Price, Jeremy Russell-Smith, Felicity Watt
Faculty of Science - Papers (Archive)
Fire regimes in many north Australian savanna regions are today characterised by frequent wildfires occurring in the latter part of the 7-month dry season. A fire management program instigated from 2005 over 24 000 km2 of biodiversity-rich Western Arnhem Land aims to reduce the area and severity of late dry-season fires, and associated greenhouse gas emissions, through targeted early dry-season prescribed burning. This study used fire history mapping derived mostly from Landsat imagery over the period 1990-2009 and statistical modelling to quantify the mitigation of late dry-season wildfire through prescribed burning. From 2005, there has been a reduction in mean …
The Relationship Between Particulate Pollution Levels In Australian Cities, Meteorology, And Landscape Fire Activity Detected From Modis Hotspots, Owen F. Price, Grant J. Williamson, Sarah B. Henderson, Fay Johnston, David M. J. S Bowman
The Relationship Between Particulate Pollution Levels In Australian Cities, Meteorology, And Landscape Fire Activity Detected From Modis Hotspots, Owen F. Price, Grant J. Williamson, Sarah B. Henderson, Fay Johnston, David M. J. S Bowman
Faculty of Science - Papers (Archive)
Generally, sigmoid curves are used to describe the growth of animals over their lifetime. However, because growth rates often differ over an animal's lifetime a single curve may not accurately capture the growth. Broken-stick models constrained to pass through a common point have been proposed to describe the different growth phases, but these are often unsatisfactory because essentially there are still two functions that describe the lifetime growth. To provide a single, converged model to age animals with disparate growth phases we developed a smoothly joining two-phase nonlinear function (SJ2P), tailored to provide a more accurate description of lifetime growth …
Climate Change, Fuel And Fire Behaviour In A Eucalypt Forest, Stuart Matthews, Andrew L. Sullivan, Penny Watson, Richard J. Williams
Climate Change, Fuel And Fire Behaviour In A Eucalypt Forest, Stuart Matthews, Andrew L. Sullivan, Penny Watson, Richard J. Williams
Faculty of Science - Papers (Archive)
A suite of models was used to examine the links between climate, fuels and fire behaviour in dry eucalypt forests in south-eastern Australia. Predictions from a downscaled climate model were used to drive models of fuel amount, the moisture content of fuels and two models of forest fire behaviour at a location in western Sydney in New South Wales, Australia. We found that a warming and drying climate produced lower fine fuel amounts, but greater availability of this fuel to burn due to lower moisture contents. Changing fuel load had only a small effect on fuel moisture. A warmer, drier …
Using Remotely-Sensed Fuel Connectivity Patterns As A Tool For Fire Danger Monitoring, Gabriele Caccamo, Laurie A. Chisholm, Ross A. Bradstock, Marjetta L. Puotinen
Using Remotely-Sensed Fuel Connectivity Patterns As A Tool For Fire Danger Monitoring, Gabriele Caccamo, Laurie A. Chisholm, Ross A. Bradstock, Marjetta L. Puotinen
Faculty of Science - Papers (Archive)
Spatial connectivity of areas of dry fuels is considered a significant influence on the incidence of large fires. Precipitation patterns can dynamically affect fuel connectivity through controls on the distribution of dry fuels. Spatio-temporal monitoring of precipitation-driven variations in dry fuel connectivity patterns could therefore offer the potential to monitor fire danger. In this paper we present an innovative graph theoretic-based approach to monitor fire danger using remotely sensed patterns of dry fuel connectivity. We analysed the temporal evolution of dry fuel connectivity in south-eastern Australia during recent fire seasons. The analysis showed that rapid changes in the connectivity of …