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Coastal Change and Glaciological Map of the Larsen Ice Shelf Area, Antarctica: 1940–2005 U.S. Geological Survey Carson City, Nevada, USA By Amy M. Mathie Contact Amy M. Mathie amathie@usgs.gov Software ArcGIS Desktop 9.2, Adobe Photoshop, Adobe Illustrator Printer HP Designjet 5000ps Data Sources Landsat image mosaic, MODIS Imagery, AVHRR Imagery, RADARSAT SAR-1 Image Mosaic Map of Antarctica, aerial photography, select journal articles and maps This map is part of a U.S. Geological Survey series of maps that uses Landsat imagery, other satellite data, and ancillary historical sources to map the glaciological fea- tures of the Antarctic coastal regions and trace fluctuations in the ice front over a 65-year period. This map, as well as two other maps of the Antarctic Peninsula, were done in cooperation with the British Antarctic Survey (BAS) and therefore used the extensive BAS historical archive that dates from 1940. The Antarctic Peninsula has shown the most obvious examples of recent change on the Antarctic continent. The Larsen Ice Shelf area has shown the most dramatic change in the peninsula—including the calving of an immense ~9,000 km 2 iceberg in early 1986, rapid retreat of the ice front between 1986 and 2000, and dis- integration of 3,250 km 2 of the northern part of the ice shelf in 2002 (subsequently followed by an additional calving of 1,200 km 2 of ice). The map illustrates the sig- nificance of monitoring the Larsen Ice Shelf for effects that may be a result of global climate change. Courtesy of U.S. Geological Survey 30 Environmental Management