| Lambert冰川流域东西两侧气候环境变化特征 |
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| 引用本文： | 张明军,效存德,任贾文,LI Zhongqin,QIN Dahe.Lambert冰川流域东西两侧气候环境变化特征[J].地理学报(英文版),2004,14(3):282-288. |
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| 作者姓名： | 张明军 效存德 任贾文 LI Zhongqin QIN Dahe |
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| 作者单位： | [1]CollegeofGeographyandEnvironment,NorthwestNormalUniversity,Lanzhou730070,China [2]ColdandAridRegionsEnvironmentalandEngineeringResearchInstitute,CAS,Lanzhou730000,China |
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| 基金项目： | The Key International Cooperation Project of Ministry of Science and Technology of China，No.2001CB711003，National Natural Science Foundation of China，No.40305007，The Science and Technology Innovation Project of Northwest Normal University，No.NWNU-KJ |
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| 摘 要： | During the 1992-1993 joint Australian-Chinese over-snow traverse of the western Lambert Glacier Basin (LGB), two firn cores were drilled respectively at MGA and LGB16. During the 1996-1997 and 1997-1998 austral summers, two firn cores were drilled respectively at DT001 and DT085 on the eastern LGB. Based on the measurements made during the expeditions, the climatic and environmental features on both sides of the LGB have been studied. Results show that during the past 50 years, the trends of both air temperature and accumulation rate show a slight increase on the east side of the LGB, in contrast to the west side of the LGB. The spatial trends of the accumulation rate measured by accumulation canes at 2 km intervals along the nearly 500 km of the traverse lines on both sides of the LGB are different. Moreover, correlations of δ^18O vs T10 along the two sides of the LGB are also different. In addition, the variations of sea salt ion concentrations show different trends in the past 50 years. All the evidence shows that the Lambert Glacier is a dividing region for the different climatic regimes over the East Antarctic ice sheet, which may be due to different moisture resources resulting from special local circumfluence such as cyclone activities, local terrain influences.
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| 关 键 词： | 冰川 气候环境 气候变化 冰河 |
| 收稿时间： | 1/8/2004 12:00:00 AM |
The climatic and environmental features on both sides of the Lambert Glacier Basin |
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| Zhang Mingjun,Xiao Cunde,Ren Jiawen,Li Zhongqin,Qin Dahe.The climatic and environmental features on both sides of the Lambert Glacier Basin[J].Journal of Geographical Sciences,2004,14(3):282-288. |
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| Authors: | Zhang Mingjun Xiao Cunde Ren Jiawen Li Zhongqin Qin Dahe |
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| Institution: | 1. College of Geography and Environment, Northwest Normal University, Lanzhou 730070, China|;
2. Cold and Arid Regions Environmental and Engineering Research Institute, CAS, Lanzhou 730000, China |
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| Abstract: | During the 1992–1993 joint Australian-Chinese over-snow traverse of the western Lambert Glacier Basin (LGB), two firn cores
were drilled respectively at MGA and LGB16. During the 1996–1997 and 1997–1998 austral summers, two firn cores were drilled
respectively at DT001 and DT085 on the eastern LGB. Based on the measurements made during the expeditions, the climatic and
environmental features on both sides of the LGB have been studied. Results show that during the past 50 years, the trends
of both air temperature and accumulation rate show a slight increase on the east side of the LGB, in contrast to the west
side of the LGB. The spatial trends of the accumulation rate measured by accumulation canes at 2 km intervals along the nearly
500 km of the traverse lines on both sides of the LGB are different. Moreover, correlations of δ18O vsT
10along the two sides of the LGB are also different. In addition, the variations of sea salt ion concentrations show different
trends in the past 50 years. All the evidence shows that the Lambert Glacier is a dividing region for the different climatic
regimes over the East Antarctic ice sheet, which may be due to different moisture resources resulting from special local circumfluence
such as cyclone activities, local terrain influences. |
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| Keywords: | Antarctic Lambert Glacier Basin temperature precipitation moisture transportation |
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