东南极内陆格罗夫山地区冰厚及冰下地形特征

doi:10.7522/j.issn.1000-0240.2015.0065

冰川冻土 ›› 2015, Vol. 37 ›› Issue (3): 580-586.doi: 10.7522/j.issn.1000-0240.2015.0065

东南极内陆格罗夫山地区冰厚及冰下地形特征

李亚炜^1,5, 刘小汉¹, 康世昌^2,3, 赵博⁴, 稂时楠⁴

1. 中国科学院青藏高原研究所青藏高原环境变化与地表过程重点实验室, 北京 100101;
2. 中国科学院寒区旱区环境与工程研究所冰冻圈科学国家重点实验室, 甘肃兰州 730000;
3. 中国科学院青藏高原地球科学卓越创新中心, 北京 100101;
4. 中国科学院电子学研究所, 北京 100190;
5. 中国科学院大学, 北京 100049

收稿日期:2014-08-10 修回日期:2015-01-02 出版日期:2015-06-25 发布日期:2015-09-29
作者简介:李亚炜(1990-), 男, 河南驻马店人, 2011年毕业于郑州大学, 现为中国科学院青藏高原研究所在读硕士研究生, 主要从事冰川与环境变化研究. E-mail: liyawei@itpcas.ac.cn.
基金资助:
国家"十二五"极地专项(CHINARE-2013-0202);全球变化研究国家重大科学研究计划项目(2013CBA01801);国家自然科学基金项目(41225002)资助

Ice thickness and subglacial topography in the Grove Mountains, East Antarctica

LI Yawei^1,5, LIU Xiaohan¹, KANG Shichang^2,3, ZHAO Bo⁴, LANG Shinan⁴

1. Key Laboratory of Tibetan Environment Change and Land Surface Processes, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, China;
2. State Key Laboratory of Cryospheric Sciences, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China;
3. CAS Center for Excellence in Tibetan Plateau Earth Sciences, Beijing 100101, China;
4. Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China;
5. University of Chinese Academy of Sciences, Beijing 100049, China

Received:2014-08-10 Revised:2015-01-02 Online:2015-06-25 Published:2015-09-29

摘要/Abstract

摘要： 中国第30次南极科学考察队格罗夫山分队(CHINARE30, 2013-2014年)利用雪地车载深层探冰雷达在东南极格罗夫山地区开展了测线总长度超过200 km大范围、高分辨率的冰厚及冰下地形调查, 获得了哈丁山北部和萨哈罗夫岭与阵风悬崖之间详细的冰厚及冰下地形特征. 通过对雷达数据分析表明, 哈丁山北部区域平均冰厚为580 m, 最大冰厚超过1 000 m, 出现在该区域的东北方向, 而东南方向冰厚相对较小; 萨哈罗夫岭与阵风悬崖之间区域的平均冰厚为610 m, 最大冰厚超过1 100 m, 该区域槽谷发育十分成熟, 槽谷形态近似呈U型. 通过对雷达剖面影像的筛选和分析, 推测在格罗夫山地区可能存在2个液态冰下湖泊.

关键词: 东南极, 格罗夫山, 冰雷达, 冰厚, 冰下地形, 冰下湖

Abstract: During the 30th Chinese National Antarctic Research Expedition in 2013-2014, vehicle-mounted ice radar was used to sound subglacial topography in the Grove Mountains. The result shows that the average ice thickness in the northern Mount Harding was 580 m with a maximum ice thickness of more than 1 000 m in the northeast, but the ice thickness in the northwest was relatively small. The ice thickness averaged between Zakharoff Ridge and Gale Escarpment was 610 m with a maximum ice thickness of more than 1 100 m. In this area, the valley cross-sectional morphology displayed a U-shape due to typical glacial erosion. In addition, analyzing and screening the radar cross-section diagrams indicate that there may exist two subglacial lakes in the Grove Mountains.

Key words: East Antarctica, Grove Mountains, ice radar, ice thickness, subglacial topography, subglacial lakes

中图分类号:

P333

李亚炜, 刘小汉, 康世昌, 赵博, 稂时楠. 东南极内陆格罗夫山地区冰厚及冰下地形特征[J]. 冰川冻土, 2015, 37(3): 580-586.

LI Yawei, LIU Xiaohan, KANG Shichang, ZHAO Bo, LANG Shinan. Ice thickness and subglacial topography in the Grove Mountains, East Antarctica[J]. JOURNAL OF GLACIOLOGY AND GEOCRYOLOGY, 2015, 37(3): 580-586.

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东南极内陆格罗夫山地区冰厚及冰下地形特征

Ice thickness and subglacial topography in the Grove Mountains, East Antarctica

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