Annual elevation change analysis of amery ice shelf and its surroundings

作者：Xie Huan^*; Gu Zhenxiong; Liu Jun; Tong Xiaohua

来源：Journal of Tongji University(Natural Science), 2013, 41(8): 1269-1273+1280.

DOI：10.3969/j.issn.0253-374x.2013.08.025

• Amery Ice Shelf
• Average elevation
• Change analysis
• Cross-track separations
• Digital elevation model
• Land elevation satellites
• Surface slope
• Track analysis

Elevation change analysis was conducted on the ice, cloud, and land elevation satellite (ICESat) altimetry data collected around the Amery ice shelf (AIS) from 2003 to 2009 with a repeat-track method. The average cross-track separation between the repeat-tracks at AIS was 100 m, and the general slope was 0.3%. An existing digital elevation model(DEM) was used to correct for effects caused by the surface slope across the repeat-track pairs. The average elevation changes were achieved in the entire study area and also within several layers of elevations in the study area. The results show that coastal areas with lower elevations tend to have significant elevation changes, ranging from -40 cm to +40 cm, while interior areas with higher elevations tend to change at a low level in the range of ±10 cm.

• 出版日期2013
• 单位同济大学