| ^226Ra and ^228Ra in the Seawater of the Western Yellow Sea |
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| 作者姓名： | MEN Wu WEI Hao and LIU Guangshan * College of Oceanography and Environmental Science Xiamen University State Key Laboratory of Marine Environmental Science |
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| 作者单位： | Xiamen University)，Xiamen 361005，P.R.China2) Institute of Physical Oceanography，Ocean University of China，Key Laboratory of Physical Oceanography，Ministry of Education，Qingdao 266003，P.R.China |
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| 基金项目： | 国家重点基础研究发展计划(973计划);国家重点实验室基金;教育部资助项目 |
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| 摘 要： | 1Introduction Therearefourradiumisotopesinnature,ofwhich224Ra,226Raand228Rahavebeenwidelyinvestigated inmarineresearch,butthespecificactivityof223Rais toolowtobemeasured,therefore,itsapplicationsarelimited(Moore,1969;Broeckeretal.,1976;KuandLin,1976;Nozak…
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| 关 键 词： | 黄海 镭 光谱测定法 漩水 海水 |
| 收稿时间： | 2005-08-25 |
| 修稿时间： | 2006-06-05 |
226Ra and 228Ra in the seawater of the western Yellow Sea |
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| MEN Wu ,WEI Hao ,and LIU Guangshan ,* College of Oceanography and Environmental Science,Xiamen University, State Key Laboratory of Marine Environmental Science.^226Ra and ^228Ra in the Seawater of the Western Yellow Sea[J].Journal of Ocean University of China,2006,5(3):228-234. |
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| Authors: | Men Wu Wei Hao Liu Guangshan |
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| Institution: | 1. College of Oceanography and Environmental Science,Xiamen University;State Key Laboratory of Marine Environmental Science Xiamen University, Xiamen 361005, P.R.China
2. Institute of Physical Oceanography, Ocean University of China, Key Laboratory of Physical Oceanography,Ministry of Education, Qingdao 266003, P.R.China |
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| Abstract: | Radium isotopes 226Ra and 228Ra in seawater of the western Yellow Sea were measured by using the Mn-fiber adsorption—HPGe γ spectrum method. The distribution
features of the two isotopes have been studied. The activities of 226Ra and 228Ra are 2.72–5.57 Bqm−3 and 7.51–34.3 Bqm−3, respectively. The activities of 226Ra and 228Ra from surface to bottom for each depth profile station are comparable within the experimental error, but the mean activities
decrease with distance from the shore. From the distribution data of 228Ra, the horizontal eddy diffusion coefficient was estimated at 29×106 cm2s−1. |
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| Keywords: | the western Yellow Sea 226Ra 228Ra y-spectrometry eddy coefficient |
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