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ARTICLES

Darkness on the Edge of Town: Mapping Urban and Peri-Urban Australia Using Nighttime Satellite Imagery

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Pages 119-133 | Received 01 Oct 2007, Accepted 01 Mar 2009, Published online: 11 Dec 2009
 

Abstract

This article explores the use of nighttime satellite imagery for mapping urban and peri-urban areas of Australia. A population-weighted measure of urban sprawl is used to characterize relative levels of sprawl for Australia's urban areas. In addition, the expansive areas of low light surrounding most major metropolitan areas are used to map the urban–bush interface of exurban land use. Our findings suggest that 82 percent of the Australian population lives in urban areas, 15 percent live in peri-urban or exurban areas, and 3 percent live in rural areas. This represents a significantly more concentrated human settlement pattern than presently exists in the United States.

Este artículo explora el uso de imágenes de satélite de la noche para cartografiar áreas urbanas y peri-urbanas de Australia. Se usó una medida del desparramado urbano con peso poblacional para caracterizar los niveles relativos del desparramado en las áreas urbanas de Australia. Adicionalmente, las áreas expansivas de luz mortecina que rodean la mayoría de las principales áreas metropolitanas se usan para cartografiar la interfaz ciudad-monte, como una de las partes del uso exurbano de la tierra. Nuestros descubrimientos sugieren que el 82 por ciento de la población australiana vive en áreas urbanas, 15 por ciento vive en áreas peri-urbanas o exurbanas, y el 3 por ciento en áreas rurales. Esto representa un patrón de asentamiento humano significativamente más concentrado de lo que actualmente acontece en Estados Unidos.

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