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首页> 外文期刊>Geophysical Research Letters >Constraining ice dynamics at Dome C, Antarctica, using remotely sensed measurements
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Constraining ice dynamics at Dome C, Antarctica, using remotely sensed measurements

机译:使用遥感测量值限制南极Dome C的冰动力学

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A first time description is given of the ice flow at Dome C, Antarctica, around the EPICA drilling site. We used satellite radar altimetry to obtain the precise ice surface topography, airborne radio echo sounding to obtain the ice thickness and satellite SAR interferometry to derive one component of the surface velocity field. The balance flux around the Dome C area is then accurately mapped and comparisons made between driving stress, surface and balance velocity to help us describe the ice flow in the region. As a byproduct of the study, we also recover anomalies in the ice flow conditions in sub-glacial lake locations. These effects result from localy invalid shallow-ice approximation. The results of this study form the basis for future investigations of the ice flow conditions at Dome C in relation to ice core interpretation. [References: 14]
机译:首次描述了南极洲圆顶C处EPICA钻井现场的冰流。我们使用卫星雷达测高仪来获得精确的冰面形貌,使用机载无线电回波测深仪来获得冰层厚度,并使用卫星SAR干涉测量法得出表面速度场的一个分量。然后,可以精确地绘制圆顶C区域周围的平衡通量,并在驱动应力,表面和平衡速度之间进行比较,以帮助我们描述该区域的冰流。作为研究的副产品,我们还恢复了亚冰川湖地区冰流条件下的异常现象。这些影响是由局部无效的浅冰近似引起的。这项研究的结果构成了有关圆顶C的冰流状况与冰芯解释有关的未来研究的基础。 [参考:14]

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