Category Archives: Modelling

3D Fire spread sandpit demo CSIRO

A couple of Photos from a recent demonstration for the Tiwi Land Council at CSIRO Darwin. Infrared interactivity allows the fire spread model to be initiated via cigarette lights.

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Kimberly incendiary sim – Netlogo Model

 

netlogofireThis model is a work in progress for a north Australian landscape fire simulation game. The primary idea is to show how a range of variables effect fire spread when conducting aerial incendiary management burns early in the dry season and how these fuel reduction fires effect the spread of late season wild fires. This model is based on an area north of Derby in the West Kimberly region of Western Australia.
Download the model

To run the model you will need to install NetlogoNetLogo

       The model currently uses the following variable to determine if a pixel will ignite:

  • a vegetation map (from SAVBAT veg mapping) and a time since burnt layer (from NAFI) to produce fuel load variable. This is the default layer displayed. Eucalyptus wood lands are displayed a olive greens, sandstone grass and scrub land as browns and mangrove communities as bright green.
  • an elevation layer (SRTM-DEM) is used to determine slope in relation to fire spread direction.
  • a topographic wetness layer, derived from the DEM, is used to represent differential landscape curing.
  • Curing as an value from 1 (wet season) to 6 (late dry season).
  • Wind speed from none (no wind influence) to strong. Wind speed influences the direction and likelihood of a pixel igniting.
  • wind direction (the direction a fire will spread)

The algorithm used to combine these variables to determine fire spread is currently fairly arbitrary and needs more work.