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Determining coastal mixing rates of western Taiwan Strait using 224Ra

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Abstract

224Ra concentrations in the coastal sea water of western Taiwan Strait in winter were measured using Mn-fiber adsorption—successive emanation scintillation method. 224Ra activities in the seawater of the western Taiwan Strait varied from 0.90 to 16.25 Bq/m3 with an average of 4.60 Bq/m3. The horizontal and vertical distributions of 224Ra were studied. The distributions of 224Ra in the surface water decreased gradually with increasing distance offshore. The apparent horizontal and vertical eddy diffusion coefficients estimated from the one dimensional steady state model of 224Ra were (5.0–55.4) × 106cm2/s and (4.0–51.7) cm2/s, respectively.

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Acknowledgments

This study is part 1 of China national project of IAEA/RCA RAS/7/019 project and was supported by the Scientific Research Foundation of Third Institute of Oceanography, State Oceanic Administration under contact No.TIO 2009050. The authors thank IAEA/RCA for providing training courses on nuclear analytical techniques relevant to the project activities.

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Authors and Affiliations

  1. Key Laboratory of Global Change and Marine-Atmospheric Chemistry of State Oceanic Administration, Xiamen, 361005, People’s Republic of China

    Wu Men, Fenfen Wang, Jianhua He, Wen Yu & Yiliang Li

  2. Third Institute of Oceanography, State Oceanic Administration, Xiamen, 361005, People’s Republic of China

    Wu Men, Fenfen Wang, Yusheng Zhang, Jianhua He, Wen Yu & Yiliang Li

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  1. Wu Men
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  2. Fenfen Wang
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  3. Yusheng Zhang
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Correspondence to Wu Men.

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Men, W., Wang, F., Zhang, Y. et al. Determining coastal mixing rates of western Taiwan Strait using 224Ra. J Radioanal Nucl Chem 295, 89–94 (2013). https://doi.org/10.1007/s10967-012-1853-4

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  • DOI: https://doi.org/10.1007/s10967-012-1853-4

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