| Sea ice characteristics between the middle Weddell Sea and the Prydz Bay, Antarctica during the austral summer of 2003 |
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| 作者姓名： | TANG Shulin KANG Jiancheng ZHOU Shangzhe LI Zhijun |
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| 作者单位： | [1]KeyLaboratoryofWesternChina＇sEnvironmentalSystemsofMinistryofEducation,LanzhouUniversity,Lanzhou730000,China／／GeographyDepartment,ShanghaiNormalUniversity,Shanghai200234,China [2]KeyLaboratoryofWesternChina＇sEnvironmentalSystemsofMinistryofEducation,LanzhouUniversity,Lanzhou730000,China／／SouthChinaNormalUniversity,Guangzhou510000,China [3]StateKeyLaboratoryofCoastalandOffshoreEngineering,DalianUniversityofTechnology,Dalian116024,China [4]KeyLaboratoryofWesternChina＇sEnvironmentalSystemsofMinistryofEducation,LanzhouUniversity,Lanzhou730000,China／／GeographyDepartment,ShanghaiNormalUniversity,Shanghai200234,China |
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| 基金项目： | supported by the National Commonweal Research Project of China under contract，国家自然科学基金 |
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| 摘 要： | The antarctic sea ice was investigated upon five occasions between January 4 and February 15, 2003. The investigations included: (1) estimation of sea ice distribution by ship-based observations between the middle Weddell Sea and the Prydz Bay; (2) estimation of sea ice distribution by aerial photography in the Prydz Bay; (3) direct measurements of fast ice thickness and snow cover, as well as ice core sampling in Nella Fjord; (4) estimation of melting sea ice distribution near the Zhongshan Station; and (5) observation of sea ice early freeze near the Zhongshan Station. On average, sea ice covered 14.4% of the study area. The highest sea ice concentration (80%) was observed in the Weddell Sea. First-year ice was dominant (99.7%-99.8%). Sea ice distributions in the Prydz Bay were more variable due to complex inshore topography, proximity of the Larsemann Hills, and/or grounded icebergs. The average thickness of landfast ice in NeUa Fjord was 169.5 cm. Wind-blown snow redistribution plays an important role in affecting the ice thickness in Nella Fjord. Preliminary freezing of sea ice near the Zhongshan Station follows the first two phases of the pancake cycle.
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| 关 键 词： | 南极洲 海冰 威德尔海 分布观测 体积测量 |
| 收稿时间： | 2004/6/11 0:00:00 |
| 修稿时间： | 2004/12/12 0:00:00 |
Sea ice characteristics between the middle Weddell Sea and the Prydz Bay, Antarctica during the austral summer of 2003 |
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| TANG Shulin,KANG Jiancheng,ZHOU Shangzhe,LI Zhijun.Sea ice characteristics between the middle Weddell Sea and the Prydz Bay, Antarctica during the austral summer of 2003[J].Acta Oceanologica Sinica,2005,24(2):9-15. |
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| Authors: | TANG Shulin KANG Jiancheng ZHOU Shangzhe and LI Zhijun |
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| Institution: | 1.Key Laboratory of Western China's Environmental Systems of Ministry of Education, Lanzhou University, Lanzhou 730000, China;Geography Department, Shanghai Normal University, Shanghai 200234, China2.Key Laboratory of Western China's Environmental Systems of Ministry of Education, Lanzhou University, Lanzhou 730000, China;South China Normal University, Guangzhou 510000, China3.State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China |
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| Abstract: | The antarctic sea ice was investigated upon five occasions between January 4 and February 15, 2003. The investigations included: (1) estimation of sea ice distribution by ship-based observations between the middle Weddell Sea and the Prydz Bay; (2) estimation of sea ice distribution by aerial photography in the Prydz Bay; (3) direct measurements of fast ice thickness and snow cover, as well as ice core sampling in Nella Fjord; (4) estimation of melting sea ice distribution near the Zhongshan Station; and (5) observation of sea ice early freeze near the Zhongshan Station. On average, sea ice covered 14.4% of the study area. The highest sea ice concentration (80%) was observed in the Weddell Sea. First-year ice was dominant (99.7%~99.8%). Sea ice distributions in the Prydz Bay were more variable due to complex inshore topography, proximity of the Larsemann Hills, and/or grounded icebergs. The average thickness of landfast ice in Nella Fjord was 169.5 cm. Wind-blown snow redistribution plays an important role in affecting the ice thickness in Nella Fjord. Preliminary freezing of sea ice near the Zhongshan Station follows the first two phases of the pancake cycle. |
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| Keywords: | Antarctica sea ice characteristics |
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