ESA, EURIMAGE / SCIENCE PHOTO LIBRARY ESA, EURIMAGE / SCIENCE PHOTO LIBRARY
Vienna. Coloured radar satellite image of Vienna (white), capital of Austria. North is towards the top. This image was made by combining three frames taken on different dates. Differences between the frames show as areas of colour. Farmland is mostly blue or green, the different colours indicating growth of different crops between frames. Running through the city is the River Danube (black). The large blue lake on the right is the Neusiedlersee. The Austrian Alps can be seen in the lower left, the rippled pattern due to reflection of radar from mountain slopes. The black Y-shape east of Vienna is an airport. Image produced by European Radar Satellite 1. Area approx.
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