NOAA / SCIENCE PHOTO LIBRARY NOAA / SCIENCE PHOTO LIBRARY
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Bathymetry and topography of the Arctic. This image is centred on the North Pole and shows the varying depths of the Arctic Ocean (with increasing depths going from turquoise to navy blue). The height of the land around the ocean varies, increasing from green through brown to white. This topographic map was constructed using a geographic information system (GIS) that captured, stored and analysed the Arctic region's topographic and bathymetric data. Topographic and bathymetric data is usually gathered by using aerial and satellite imagery combined with radar and sonar mapping. This project is the International Bathymetric Chart of the Arctic Ocean (IBCAO) and commenced in 1997.
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