Agriculture. ERS-1 multitemporal radar image of field patterns in Wieringermeer Polder, the Netherlands. This image was made by combining three images made over a period of six days. The radar view shows the patterns of fields in this reclaimed land (right half of frame) to good effect. The different tones of the fields reflect the moisture of the soil (darkest) and vegetation (pale). The bright area toward lower left is the town of Schagen. The various colours in the water at upper right are a result of changes of the state of the surface between frames. The data for this image were gathered by the ERS-1 European radar mapping satellite.
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