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LIU Jiying, WEN Jiahong, WANG Yafeng, WANG Weili, Beata M CATHSO, Kenneth C JEZEK. Development and Applications of Dome A-DEM in Antarctic Ice Sheet[J]. Chinese Geographical Science, 2007, 17(2): 160-165. doi: 10.1007/s11769-007-0160-4
Citation: LIU Jiying, WEN Jiahong, WANG Yafeng, WANG Weili, Beata M CATHSO, Kenneth C JEZEK. Development and Applications of Dome A-DEM in Antarctic Ice Sheet[J]. Chinese Geographical Science, 2007, 17(2): 160-165. doi: 10.1007/s11769-007-0160-4
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Development and Applications of Dome A-DEM in Antarctic Ice Sheet

doi: 10.1007/s11769-007-0160-4
  • 1.

    Department of Geography, Shanghai Normal University, Shanghai 200234, China;

  • 2.

    SGT, NASA Goddard Space Flight Center, Code 61

  • 4.

    1, Greenbelt, MD 20771, USA;

  • 3.

    Byrd Polar Research Center, the Ohio State University, Columbus, OH 43210, USA

  • Received Date: 2006-10-26
  • Rev Recd Date: 2007-01-20
  • Publish Date: 2007-06-20
  • Dome A, the highest dome of East Antarctic Ice Sheet, is being an area focused by international Antarctic community after Chinese Antarctic Expedition finally reached there in 2005, and with the ongoing International Polar Year (IPY) during August 2007. In this paper two data processing methods are used together to generate two 100-m cell size digital elevation models (DEMs) of the Dome A region (Dome A-DEM) by using Cokriging method to interpolate the ICESat GLAS data, with Ihde-DEM as a constraint. It provides fundamental data to glaciological and geophysical investigation in this area. The Dome A-DEM was applied to determining the ice-sheet surface elevations and coordinates of the south and north summits, defining boundaries of basins and ice flowlines, deducing subglacial topography, and mapping surface slope and aspect in Dome A region. The DEM shows there are two (north and south) summits in Dome A region. The coordinate and the surface elevation of the highest point (the north summit) are 80°21′29.86″S, 77°21′50.29″E and 4092.71±1.43m, respectively. The ice thickness and sub-ice bedrock elevation at north summit are 2420m and 1672m, respectively. Dome A region contains four drainage basins that meet together near the south summit. Ice flowlines, slope and aspect in detail are also derived using the DEM.
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Development and Applications of Dome A-DEM in Antarctic Ice Sheet

doi: 10.1007/s11769-007-0160-4
  • 1. Department of Geography, Shanghai Normal University, Shanghai 200234, China;
  • 2. SGT, NASA Goddard Space Flight Center, Code 61
  • 4. 1, Greenbelt, MD 20771, USA;
  • 3. Byrd Polar Research Center, the Ohio State University, Columbus, OH 43210, USA
  • Received Date: 2006-10-26
  • Rev Recd Date: 2007-01-20
  • Publish Date: 2007-06-20

Abstract: Dome A, the highest dome of East Antarctic Ice Sheet, is being an area focused by international Antarctic community after Chinese Antarctic Expedition finally reached there in 2005, and with the ongoing International Polar Year (IPY) during August 2007. In this paper two data processing methods are used together to generate two 100-m cell size digital elevation models (DEMs) of the Dome A region (Dome A-DEM) by using Cokriging method to interpolate the ICESat GLAS data, with Ihde-DEM as a constraint. It provides fundamental data to glaciological and geophysical investigation in this area. The Dome A-DEM was applied to determining the ice-sheet surface elevations and coordinates of the south and north summits, defining boundaries of basins and ice flowlines, deducing subglacial topography, and mapping surface slope and aspect in Dome A region. The DEM shows there are two (north and south) summits in Dome A region. The coordinate and the surface elevation of the highest point (the north summit) are 80°21′29.86″S, 77°21′50.29″E and 4092.71±1.43m, respectively. The ice thickness and sub-ice bedrock elevation at north summit are 2420m and 1672m, respectively. Dome A region contains four drainage basins that meet together near the south summit. Ice flowlines, slope and aspect in detail are also derived using the DEM.

LIU Jiying, WEN Jiahong, WANG Yafeng, WANG Weili, Beata M CATHSO, Kenneth C JEZEK. Development and Applications of Dome A-DEM in Antarctic Ice Sheet[J]. Chinese Geographical Science, 2007, 17(2): 160-165. doi: 10.1007/s11769-007-0160-4
Citation: LIU Jiying, WEN Jiahong, WANG Yafeng, WANG Weili, Beata M CATHSO, Kenneth C JEZEK. Development and Applications of Dome A-DEM in Antarctic Ice Sheet[J]. Chinese Geographical Science, 2007, 17(2): 160-165. doi: 10.1007/s11769-007-0160-4
shu

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