GPS mapping of a glacier

GPS mapping of a glacier

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Caption: GPS topographical glacier mapping. Glaciologist using a snowmobile-mounted Global Positioning System (GPS) unit to map a glacier. This technique is called differential GPS (DGPS). DGPS is a way of improving the accuracy of GPS by using a signal from a fixed base station as well as the usual signals from orbiting satellites. It allows measurement of positional accuracy within a metre. This glaciologist drove for eight hours over the entire glacier, mapping its extent and topography. Photographed on the Marmaglaciaren glacier in Swedish Lapland, in spring 2006.

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Keywords: 2006, 3-d, 3d, adult, caucasian, climate change, climatological, climatologist, climatology, cold, dgps, differential, driving, environment, environmental, equipment, glacial, glaciologist, glaciology, global positioning system, global warming, gps unit, human, ice, male, man, mapping, marmaglaciaren, people, person, research, researcher, riding, satellite, snow, snowmobile, speed, speeding, sweden, swedish, swedish lapland, tarfala, topographical, topography, topological, topology, white

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