MDA INFORMATION SYSTEMS / SCIENCE PHOTO LIBRARY MDA INFORMATION SYSTEMS / SCIENCE PHOTO LIBRARY
Centre-pivot irrigation. Coloured optical and infrared, Landsat satellite image of cultivated land in the Midland Basin, Texas, USA. North is at top. Fields are seen with circular green patches. These indicate the use of centre-pivot irrigation. This uses massive booms that rotate around a central pivot to supply water to crops in this arid region. Desert areas (red and purple) are covered with regular arrays of white dots. These dots show the presence of an oil or natural gas well.
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