| 白令海峡水团来源的镭同位素示踪 |
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| 引用本文： | 陈敏,李艳平,邱雨生,杨俊鸿.白令海峡水团来源的镭同位素示踪[J].海洋学报,2011,33(2):69-76. |
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| 作者姓名： | 陈敏 李艳平 邱雨生 杨俊鸿 |
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| 作者单位： | 1.厦门大学 海洋学系,福建 厦门 361005;厦门大学 近海海洋环境科学国家重点实验室,福建 厦门 361005 |
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| 基金项目： | 国际极地年中国行动计划项目;中国第3次北极科学考察资助项目;福建省自然科学基金杰出青年基金项目(2009J06026)。 |
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| 摘 要： | 对白令海峡64.3°N纬向断面镭同位素的研究表明,水体中226Ra比活度、228Ra比活度和228Ra/226Ra)A.R.存在明显的纬向变化,反映出太平洋与北冰洋水体交换的多种路径.根据温度、盐度和镭同位素的水平与垂直分布,太平洋水进入北冰洋的路径可能主要有3支,分别为白令海峡西侧的阿拉德水、白令海峡东侧的阿拉斯加沿...
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| 关 键 词： | 白令海峡 水团来源 镭-226 镭-228 |
| 收稿时间： | 2010/8/12 0:00:00 |
Water masses in the Bering Strait revealed by radium isotopes |
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| CHEN Min,LI Yan-ping,QIU Yu-sheng and YANG Jun-hong.Water masses in the Bering Strait revealed by radium isotopes[J].Acta Oceanologica Sinica (in Chinese),2011,33(2):69-76. |
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| Authors: | CHEN Min LI Yan-ping QIU Yu-sheng and YANG Jun-hong |
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| Institution: | 1.Department of Oceanography, Xiamen University, Xiamen 361005, China;State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361005, China2.Department of Oceanography, Xiamen University, Xiamen 361005, China |
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| Abstract: | Radium isotopes in the water column along 64.3°N in the Bering Strait were determined to reveal the northward flow of the Pacific water. The specific activities of 226Ra and 228Ra, and the 228Ra/226Ra)A.R. show a longitudinal variation in the Bering Strait, depicting the pathways of Pacific inflow. Based on the distributions of temperature, salinity and radium isotopes in the Bering Strait, three water masses were identified: the Anadyr Water in the western channel, the Alaskan Coastal Water in the eastern channel, and the Bering Shelf Water in the central strait. A subseasonal variation of radium isotopes in the Bering Strait was observed.The specific activities of 226Ra and 228Ra, and 228Ra/226Ra)A.R. in September are higher than those observed in July, indicating water in the western Bering Strait is influenced by the southward flow of the Siberia Coastal Current in September. |
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| Keywords: | Bering Strait water masses 226Ra 228Ra |
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