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This sub-image of the Antarctic Peninsula from the 2000 Antarctic Mapping Mission focuses on the northern end of the Larsen Ice Shelf. The blue line shows the coastline in 1997, the red line in 1992, based on synthetic aperture radar imagery from the European Space Agency, and the yellow line in the mid-1970s. The northern Larsen has been retreating since the 1960s, with major collapses in the 1990s. The southern Larsen was advancing until a major collapse in 1995. Small areas, however, also show advancement since 1997, including a section near the Sobral Peninsula in the center of the image. These advancements may indicate early rebuilding of the overall extent of the Larsen Shelf. The two RADARSAT mosaics from 1997 and 2000 Antarctic imaging campaigns provide highly accurate snapshots of this rapidly changing region of the greater Antarctic continent. The Antarctic Mapping Mission is a joint project between NASA and the Canadian Space Agency. The project is led by Ohio State University in Columbus in partnership with the Alaska Synthetic Aperture Radar (SAR) Facility at the University of Alaska Fairbanks, NASA's Jet Propulsion Laboratory, Pasadena, Calif., and the Vexcel Corporation, Boulder, Colo. The Canadian Space Agency's RADARSAT-1 satellite carries a synthetic aperture radar, an imaging radar sensor that operates at C-band (5.3 GHz frequency) with horizontal transmit-horizontal receive polarization from an orbital altitude of about 800 kilometers (500 miles). The 1997 Antarctic Mapping Mission took place between Sept. 19 and Oct. 14 and mapped the entire Antarctic continent. The 2000 Antarctic Mapping Mission lasted from Sept. 3 to Nov. 4 and obtained complete coverage of Antarctica north of 82 degrees south latitude. Photo Credit: Canadian Space Agency/NASA/Ohio State University, Jet Propulsion Laboratory, Alaska SAR Facility # # # # #
Description
This sub-image of the Antarctic Peninsula from the 2000 Antarctic Mapping Mission focuses on the northern end of the Larsen Ice Shelf. The blue line shows the coastline in 1997, the red line in 1992, based on synthetic aperture radar imagery from the European Space Agency, and the yellow line in the mid-1970s. The northern Larsen has been retreating since the 1960s, with major collapses in the 1990s. The southern Larsen was advancing until a major collapse in 1995. Small areas, however, also show advancement since 1997, including a section near the Sobral Peninsula in the center of the image. These advancements may indicate early rebuilding of the overall extent of the Larsen Shelf. The two RADARSAT mosaics from 1997 and 2000 Antarctic imaging campaigns provide highly accurate snapshots of this rapidly changing region of the greater Antarctic continent. The Antarctic Mapping Mission is a joint project between NASA and the Canadian Space Agency. The project is led by Ohio State University in Columbus in partnership with the Alaska Synthetic Aperture Radar (SAR) Facility at the University of Alaska Fairbanks, NASA's Jet Propulsion Laboratory, Pasadena, Calif., and the Vexcel Corporation, Boulder, Colo. The Canadian Space Agency's RADARSAT-1 satellite carries a synthetic aperture radar, an imaging radar sensor that operates at C-band (5.3 GHz frequency) with horizontal transmit-horizontal receive polarization from an orbital altitude of about 800 kilometers (500 miles). The 1997 Antarctic Mapping Mission took place between Sept. 19 and Oct. 14 and mapped the entire Antarctic continent. The 2000 Antarctic Mapping Mission lasted from Sept. 3 to Nov. 4 and obtained complete coverage of Antarctica north of 82 degrees south latitude. Photo Credit: Canadian Space Agency/NASA/Ohio State University, Jet Propulsion Laboratory, Alaska SAR Facility # # # # #
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