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    Large Bushfires in Central Australia: Natural Hazards

    Large Bushfires in Central Australia: Natural Hazards

    WASHINGTON, D.C., UNITED STATES

    07.22.2011

    Courtesy Photo

    NASA

    Fire regimes across Australia's vast, arid interior have changed in the time since European settlement. Aboriginal peoples' pastoralism involved controlled burning of small, scattered areas, which created a diverse vegetation landscape and natural fire breaks. The diverse vegetation in turn supported a diversity of native plants and animals.

    This pair of images of central Australia near Alice Springs shows numerous large bushfires marked with red dots. The native vegetation of the arid region appears reddish in the true-color imagery, but the enhanced false-color image provides better contrast between vegetation and burned areas, with vegetation appearing in shades of green, naturally bare soil apearing pinkish, and burned areas appearing reddish-brown or dark brown. Some of these fires are occurring on Aboriginal lands and may be part of traditional fire management practices. The images were captured by the modis.gsfc.nasa.gov Moderate Resolution Imaging Spectroradiometer (MODIS) on the Aqua satellite on October 9, 2002.

    The region is now facing problems similar to the Western forests of the United States. In the arid regions of the continent, fire suppression that has been practiced since European settlement has caused a build up in vegetation that fuels larger, more destructive bushfires. Whether the native plants and animals can adapt to this new fire regime is the subject of intense study. Already it appears that fire suppression has created an abundance of trees and shrubs that are crowding out native grasses and reducing rangeland for grazing animals. Larger fires put further pressure on remaining rangeland habitat.

    Image courtesy Jacques Descloitres, rapidfire.sci.gsfc.nasa.gov MODIS Land Rapid Response Team at NASA GSFC



    NASA Identifier: Australia.AMOA2002282.combo

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    IMAGE INFO

    Date Taken: 07.22.2011
    Date Posted: 02.08.2013 22:11
    Photo ID: 860381
    Resolution: 2200x3400
    Size: 1.03 MB
    Location: WASHINGTON, D.C., US

    Web Views: 3
    Downloads: 0

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