Infrared satellite of desert drainage channels

Infrared satellite of desert drainage channels

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Caption: Desert erosion. Infrared satellite image of eroded rock beds near the Layla Oasis in the Arabian desert, Saudi Arabia. North is at top. In the infrared range rock appears in shades of grey, sand is yellow, vegetation is red and water is black. The annual average rainfall in this area is only 100 millimetres, but the water that does fall has eroded the ground to leave drainage channels (wadies). The largest of these, the Wadi Al Hamar (in upper frame) has some vegetation growing along its banks. The irrigation circles of the settle- ment of Layla are watered by revolving booms. Image taken by the SPOT-1 satellite in March.

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Keywords: arabian desert, arabian dsrt, desert, desert landscape, environment, erosion, from space, geography, irrigation, layla oasis, saudi arabia, saudia arabia, spot-1, wadi, water

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