| GPS-derived horizontal ice flow velocities along the traverse route from Zhongshan Station to Dome-A, East Antarctica |
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| 作者姓名： | 王清华 |
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| 作者单位： | The Key |
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| 基金项目： | Two open research fund programs provide the financial support of this work，One is the Open Research Fund Program of the Key Laboratory of Ice Core and Cold Regions Environment Chinese Academy of Sciences，the other is the Open Research Fund Program of the Key Laboratory of Geospace Environment and Geodesy Ministry of Education China |
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| 摘 要： | 1 IntroductionFromitsoriginalformulationin 1 990 ,theInternationalTrans AntarcticScientificExpedition (ITASE)hashadasitsprimaryaimthecollectionandinterpretationofacon tinental widearrayofenvironmentalparametersassembledthroughthecoordinatedeffortsofscientistsfromseveralnations(Mayewskietal.1 996) .AsaconsequenceITASEhasbeenfocusedtoaddresstwokeyscientificobjectives:1 )Todeterminethespatialvariabil ityofAntarcticclimate (eg.accumulation,airtemperature,atmosphericcirculation)overthelast2…
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GPS-derived horizontal ice flow velocities along the traverse route from Zhongshan Station to Dome-A, East Antarctica |
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| Wang Qinghua The Key Laboratory of Geospace Environment and Geodesy,School of Geodesy and Geomatics,Wuhan University,Wuhan ,China.GPS-derived horizontal ice flow velocities along the traverse route from Zhongshan Station to Dome-A, East Antarctica[J].Chinese Journal of Polar Science,2003,14(1). |
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| Authors: | Wang Qinghua The Key Laboratory of Geospace Environment and Geodesy School of Geodesy and Geomatics Wuhan University Wuhan China |
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| Institution: | The Key Laboratory of Geospace Environment and Geodesy, School of Geodesy and Geomatics, Wuhan University, Wuhan 430079, China |
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| Abstract: | The traverse route from Zhongshan Station to Dome A is one of the most important expedition routes of ITASE Project. China carried out 3 inland traverses during the 1996/1997, 1997/1998, 1998/1999 austral summer field seasons. The field team reached inland 300 km, 500 km and 1100 km away from Zhongshan Station respectively. Some ice motion stakes were set up, occupied and reoccupied along the route by GPS technology. It showed that the ice along the traverse route flowed with an 8 25 ma -1 velocity to the northwest, the direction of the bottom of Lambert Glacier Basin. They coincide with the results along the eastern section from LGB59 70 of the LGB route deduced by Australia in both values and directions. Furthermore, the directions of the horizontal flow are perpendicular to the surface topography contour. The much larger velocity at the point of LT980 with an approximate value of 100 ma -1 was probed. It was caused by a 15 km wide trough on the bed beneath this point. |
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| Keywords: | Antarctic Inland Ice sheet Expedition ITASE Dome A GPS ice flow |
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