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| Determination of ice thickness, subice topography and ice vol-ume at Glacier No. 1 in Tien Shan, China by ground penetrating radar | |
| 作者姓名： | 孙波 张鹏 焦克勤 邓新生 温家洪 |
| 作者单位： | Polar Research Institute of China，Shanghai 200129，China，Beijing Research Institute of Uranium Geology，Beijing 100029，China，Laboratory of Ice Core and Cold Region Environment，cold and Arid Regions Environmental and Engineering Institute，Chinese Academy of Sciences，Lanzhou 730000，China，Polar Research Institute of China，Shanghai 200129，China，Polar Research Institute of China，Shanghai 200129，China |
| 基金项目： | 国家自然科学基金，科技部资助项目，Tien Shan Glacier Station Research Foundation and Laboratory foundation of Ice Core and Cold Region Environment Cold and Arid Regions Environmental and Engineering Institute Chinese Academy of Sciences |
| 摘 要： | We describe a radio-echo sounding (RES) survey for the determination of ice thickness, subglacial topography and ice volume of Glacier No. 1 , in Tien Shan, China, using ground-penetrating radar (GPR). Radar data were collected with 100-MHz antennas that were spaced at 4 m with a step size of 8 m. The images produced from radar survey clearly show the continuity of bedrock echoes and the undulation features of the bedrock surface. Radar results show that the maximum ice thickness of Glacier No. 1 is 133 m, the thickness of the east branch of Glacier No. 1 averages at 58. 77 m while that of the west branch of Glacier No. 1 averages at 44. 84 m. Calculation on ice volume indicates that the ice volume of the east branch of Glacier No. 1 is 51. 87 × 106 m3 and that of the west branch of Glacier No. 1 is 20. 21 × 106 m3. The amplitude of the undulation of the bedrock surface topography revealed by radar profiles is larger than that of the glacier surface topography, indicating that the surface relief does |
Determination of ice thickness, subice topography and ice volume at Glacier No. 1 in Tien Shan, China by ground penetrating radar |
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| Sun Bo,Zhang Peng Jiao Keqin Deng Xinsheng and Wen Jiahong Polar Research Institute of Chirna,Shanghai ,China Beijing Research Institute of Uranium Geology,Beijing ,China Laboratory of he Core and Cold Region Environment,Cold and Arid Regions Environmental and Engineering Institute,Chinese Academy of Sciences,Lanzhou ,China.Determination of ice thickness, subice topography and ice vol-ume at Glacier No. 1 in Tien Shan, China by ground penetrating radar[J].Chinese Journal of Polar Science,2003,14(2). | |
| Authors: | Sun Bo Zhang Peng Jiao Keqin Deng Xinsheng and Wen Jiahong Polar Research Institute of Chirna Shanghai China Beijing Research Institute of Uranium Geology Beijing China Laboratory of he Core and Cold Region Environment Cold and Arid Regions Environmental and Engineering Institute Chinese Academy of Sciences Lanzhou China |
| Institution: | 1. Polar Research Institute of China, Shanghai 200129, China 2. Beijing Research Institute of Uranium Geology, Beijing 100029, China 3. Laboratory of Ice Core and Cold Region Environment, Cold and Arid Regions Environmental and Engineering Institute, Chinese Academy of Sciences, Lanzhou 730000, China |
| Abstract: | We describe a radio-echo sounding (RES) survey for the determination of ice thickness, subglacial topography and ice volume of Glacier No. 1, in Tien Shah,China, using ground-penetrating radar (GPR). Radar data were collected with 100-MHz antennas that were spaced at 4 m with a step size of 8 m. The images produced from radar survey clearly show the continuity of bedrock echoes and the undulation features of the bedrock surface. Radar results show that the maximum ice thickness of Glacier No. 1 is 133 m, the thickness of the east branch of Glacier No. 1 averages at 58.77 m while that of the west branch of Glacier No. 1 averages at 44.84 m. Calculation on ice volume indicates that the ice volume of the east branch of Glacier No. 1 is 51.87 × 106 m3 and that of the west branch of Glacier No. 1 is 20.21 × 106 m3. The amplitude of the undulation of the bedrock surface topography revealed by radar profiles is larger than that of the glacier surface topography, indicating that the surface relief does not directly depend on that of the bedrock undulation in Glacier No. 1, in Tien Shan. |
| Keywords: | radio - echo sounding ice thickness ice volumn subice topography |
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