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Deserts of Australia

From Wikipedia, the free encyclopedia

 Deserts in Australia
Deserts in Australia
 Deserts of Australia (in red), overlaid with internal boundaries and Interim Biogeographic Regionalisation for Australia (IBRA) biogeographic regions.
Deserts of Australia (in red), overlaid with internal boundaries and Interim Biogeographic Regionalisation for Australia (IBRA) biogeographic regions.
 Climate zones in Australia
Climate zones in Australia
 Rain days in Australia
Rain days in Australia

Named deserts of Australia cover 1,371,000 square kilometres (529,000 sq mi), or 18% of the Australian mainland. However, approximately 35% of the Australian continent receives so little rain it is effectively desert. The deserts in Australia are primarily distributed throughout the western plateau and interior lowlands of the continent.[1]

By international standards Australian deserts receive relatively high rates of rainfall.[2] No weather station situated in an arid region records less than 100 mm of average annual rainfall.[3] The deserts of Australia, particularly in the interior, lack any significant summer rains.[2]

Deserts are not necessarily completely devoid of vegetation, but have large areas where vegetation is very limited in height or extent.

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Transcription

Contents

Deserts

Desert State/Territory Area (km2) Area (miles2) Area Rank % of Australia
Great Victoria Desert Western Australia, South Australia 348,750 km2 134,650 sq mi 1 4.5%
Great Sandy Desert Western Australia 267,250 km2 103,190 sq mi 2 3.5%
Tanami Desert Western Australia, Northern Territory 184,500 km2 71,200 sq mi 3 2.4%
Simpson Desert Northern Territory, Queensland, South Australia 176,500 km2 68,100 sq mi 4 2.3%
Gibson Desert Western Australia 156,000 km2 60,000 sq mi 5 2.0%
Little Sandy Desert Western Australia 111,500 km2 43,100 sq mi 6 1.5%
Strzelecki Desert South Australia, Queensland, New South Wales 80,250 km2 30,980 sq mi 7 1.0%
Sturt Stony Desert South Australia, Queensland, New South Wales 29,750 km2 11,490 sq mi 8 0.3%
Tirari Desert South Australia 15,250 km2 5,890 sq mi 9 0.2%
Pedirka Desert South Australia 1,250 km2 480 sq mi 10 0.016%

Great Victoria Desert

The Great Victoria Desert lies in Western Australia and South Australia. It is over 800 kilometres (500 mi) wide and covers an area of 348,750 square kilometres (134,650 sq mi).

Gibson Desert

 A Toyota Land Cruiser in the Gibson Desert
A Toyota Land Cruiser in the Gibson Desert

The Gibson Desert lies in central Western Australia. The desert is about 156,000 square kilometres (60,000 sq mi) in size. Most of the inhabitants of the area are Indigenous Australians.

Desert group

  • Western Desert – a grouping of the Gibson Desert, the Great Sandy Desert, and the Little Sandy Desert.

Climate issues

Australia's climate is mostly determined by the hot, sinking air of the subtropical high pressure belt.[4] Dry conditions are associated with an El Niño–Southern Oscillation in Australia. Vegetation in arid areas is primarily dependent upon soil type.[4]

Extensive areas are covered by longitudinal dunes. Forty percent of Australia is covered by dunes.[4] Central Australia is very dry, averaging 150 mm of rainfall each year.[4]

Ecological issues

Many introduced species have affected the fauna and flora of Australia's desert regions. The Australian feral camel affects native vegetation. This is partly because Australian desert vegetation evolved without any major herbivores present.[4] Uncontrolled access to more sensitive areas by four-wheel-drive vehicles is also an issue.

See also

References

  1. ^ Geosciences Australia –Deserts
  2. ^ a b Aleshire, Peter; Geoffrey H. Nash (2007). Deserts: The Extreme Earth. Infobase Publishing. p. 137. ISBN 1438106661. Retrieved 27 September 2015. 
  3. ^ Mabbutt, J. A. (2012). "Landforms of the Australian Desert". In El-Baz, F. Deserts and arid lands: Volume 1 of Remote Sensing of Earth Resources and Environment. Springer Science & Business Media. p. 78. ISBN 9400960808. Retrieved 27 September 2015. 
  4. ^ a b c d e Laity, Julie J. (2009). Deserts and Desert Environments. John Wiley & Sons. pp. 43, 45. ISBN 1444300741. Retrieved 8 November 2012. 

External links

Further reading

  • Johnson, John & Catherine de Courcy.(1998) Desert Tracks Port Melbourne, Vic. Lothian Books. ISBN 0-85091-811-1
This page was last edited on 19 February 2018, at 13:56.
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