Surface topography of Dome Concordia (Antarctica) from kinematic interferential GPS and bedrock topography
Surface topography of Dome Concordia (Antarctica) from kinematic interferential GPS and bedrock topography
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DOI：
10.3189/172756400781820606
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发表时间：
2000
影响因子：
2.9
通讯作者：
A. Capra;R. Cefalo;S. Gandolfi;G. Manzoni;I. Tabacco;L. Vittuari
中科院分区：
文献类型：
--
作者：
A. Capra;R. Cefalo;S. Gandolfi;G. Manzoni;I. Tabacco;L. Vittuari
根据1995/96年两个不同项目的动态双频全球定位系统（GPS）数据，以及用于变形分析和冰流速测量的大地网的静态GPS数据，绘制了一幅新的Dome Concordia（Dome C）地区的平面高度图，覆盖面积约为2000 km 2。在第10次和第11次意大利考察期间，为EPICA进行了GPS测量，以选择在Dome C进行深冰芯钻探的最佳位置。通过分析不同剖面之间交叉处的高度值差异来测试动态测量的准确性;值范围为50-150 mm。将新地图与1993年动态干涉GPS数据进行比较，并计算1993年和1995年之间的残差数据。表面地形值被用来计算圆顶C区基岩的高程，从参考地面和航空无线电回波探测测量获得。
Abstract A new plano-altimetric map of the Dome Concordia (Dome C) area was drawn up from 1995/96 kinematic double-frequency global-positioning-system (GPS) data of two different projects, as well as static GPS data from a geodetic net for deformation analysis and ice-flow velocity measurements covering an area of about 2000 km2. The GPS surveys were carried out for EPICA during the 10th and 11th Italian Expeditions to choose the optimal location for deep ice-core drilling at Dome C. The accuracy of the kinematic survey was tested by analysing the height-value differences at intersections between different profiles; values ranged from 50–150 mm. The new map was compared with the 1993 kinematic interferential GPS data and residuals between the 1993 and 1995 data were calculated. The surface topographic values were used to calculate the elevation of the Dome C area bedrock, obtained from the reference ground-based and airborne radio-echo-sounding surveys.