极地研究 ›› 2001, Vol. 13 ›› Issue (2): 129-136.

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南极内陆考察沿线GPS高精度定位点测量结果分析

王清华;鄂栋臣;陈春明;黄声享   

  • 出版日期:2001-06-30 发布日期:2001-06-30

AN ANALYSIS ON THE RESULTS FOR THE GPS POINTS ALONG THE CHINESE ANTARCTIC INLAND TRAVERSE ROUTE

  • Online:2001-06-30 Published:2001-06-30

摘要:

中山站至 Dome- A考察是中国承担的“国际横穿南极科学考察”( ITASE)计划的一部分。考察沿线布设有 GPS高精度定位点 ,通过两期观测数据的计算可知 ,考察沿线的冰川整体上以8- 2 4 m/a的速度向西北方向 (兰伯特冰川盆地方向 )流动 ,而且 ,越接近冰盖边缘 ,运动速度越快 ,最快达到 1 0 0 m/a。同时 ,由于冰川的流动 ,引起了 GPS点垂直方向 0 .2 - 1 m的沉降量

关键词: 南极内陆冰盖;兰伯特冰川;Dome-A;GPS;冰川运动

Abstract:

The route from Zhongshan Station to Dome A is one of the most important expedition routes of the ITASE project. China carried out 3 inland traverses during the 1996/1997, 1997/1998, 1998/1999 Antarctic summer seasons respectively. Some GPS points were set up,surveyed and resurveyed along the traverse route. The results for the GPS data processing indicate that the ice flows with an 8-24m/a velocity to the northwest, that is to say to the foot of the Lambert Glacier. Moreover, the nearer to the edge of the ice sheet, the faster the flow is. The maximum flow velocity is about 100m/a. Finally, due to the ice flow, a 0.2-1m/a sedimentation rate for the GPS points is achieved.