DAVID VAUGHAN / SCIENCE PHOTO LIBRARY DAVID VAUGHAN / SCIENCE PHOTO LIBRARY
Ice shelf measurement. Researcher prepares to use radar to measure the thickness of the Rutford Ice Stream, part of the huge Ronne Ice Shelf, Antarct- ica. The equipment may also be used to investigate the underlying rock. The Ronne ice shelf covers the southern Weddell Sea. Variations in its thickness may be an indication of climate change such as global warming. Photograph of research carried out by the British Antarctic Survey.
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