摘要
利用NSIDC公布的ICESat运行期间的19个任务期的观测数据,采用重复轨迹分析方法估计近年来南极冰盖高程的时空变化。结果表明,南极大陆冰盖整体上呈现消融趋势,基于不同的GIA模型和ICESat激光测高数据的南极大陆冰盖高程变化的趋势约为-1.17^-1cm/a。
We estimate the temporal and spatial variation of Antarctic ice sheet elevation using repeat track analysis based on all of the ICESat operational periods (19 campaigns), the results show that the elevation of the ice sheet decreased for the past years. Due to the influence of the GIA, We analysis the contribution of three different GIA model and find the average height rates derived from the ICE- Sat campaigns is about -1.17- -1 cm/a based on the three different GIA models.
出处
《大地测量与地球动力学》
CSCD
北大核心
2015年第3期449-452,共4页
Journal of Geodesy and Geodynamics
基金
国家自然科学基金(41174064
41274025)
地理空间信息工程国家测绘地理信息局重点实验室项目(201307)
极地测绘科学国家测绘地理信息局重点实验室开放基金(201204)
国家973计划(2013CB733301
2012CB957703)
关键词
南极冰盖
高程变化
卫星激光测高
重复轨迹分析
冰后回弹
antarctic ice sheet
elevation change
satellite laser altimetry
repeat track analysis
GIA