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World land and sea floor topography
World land and sea floor topography, satellite image. Height is colour-coded from green at sea level, through yellow to grey-brown for the highest mountains. Ocean depth is colour-coded from blue-white at sea level to dark blue in the deep ocean plains and trenches. The bathymetry data combines satellite radar altimeter data and ship surveys from the GEBCO Digital Atlas. The land satellite imagery is from the AVHRR sensor on the NOAA Polar Orbiter weather satellites. Land topography data was obtained with radar measurements from the Space Shuttle program. Lakes, rivers and ice cover are overlaid from a digital map.
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