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Uranium Series Radionuclides

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Oceanography of the East Sea (Japan Sea)

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Abstract

The activities of 228Th, 230Th, 234Th, 226Ra, 228Ra, 210Po, and 210Pb have been reported in the East Sea (Japan Sea) over the past few decades. The activities of thorium isotopes over the entire depth of the East Sea ranged from 0.4 to 8.3 dpm 100 L−1 for 228Th, 0.06 to 0.37 dpm 1000 L−1 for 230Th, and 0.4 to 2.1 dpm L−1 for 234Th. Thorium isotopes in the East Sea were used for determining the collection efficiency of sediment traps (using 230Th) and the annual vertical flux of particulate organic carbon (using 234Th). The activities of radium isotopes over the entire depth of the East Sea ranged from 0.3 to 11 dpm 100 L−1 for 228Ra and 6.4 to 16 dpm 100 L−1 for 226Ra. Radium isotopes in the East Sea were used for determining the vertical eddy diffusion coefficient (using 228Ra) and the residence time of deep water (using 226Ra). The activities of 210Pb over the entire depth ranged from 4.4 to 27 dpm 100 L−1, and the activities for 210Po over the entire depth ranged from 1.5 to 11 dpm 100 L−1. The 210Pb and 210Po in the East Sea were used for estimating the residence time of trace elements in the dissolved, colloid, and particulate phases. In summary, U-series radioisotopes have provided useful information on various physical and biogeochemical processes in the East Sea.

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Author information

Authors and Affiliations

  1. Department of Earth and Marine Sciences, Jeju National University, Jeju, 690-756, Republic of Korea

    Tae-Hoon Kim

  2. School of Earth and Environmental Sciences, Seoul National University, Seoul, 151-742, Republic of Korea

    Jeonghyun Kim & Guebuem Kim

Authors
  1. Tae-Hoon Kim
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  2. Jeonghyun Kim
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  3. Guebuem Kim
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Correspondence to Tae-Hoon Kim .

Editor information

Editors and Affiliations

  1. Research Institute of Oceanography School of Earth & Environmental Science, Seoul National University, Seoul, Korea (Republic of)

    Kyung-Il Chang

  2. Marine Production Management, Pukyong National University, Busan, Korea (Republic of)

    Chang-Ik Zhang

  3. Department of Radio Science and Engineering, Chungnam National University, Daejeon, Korea (Republic of)

    Chul Park

  4. Korea Institute of Ocean Science & Tech., Marine Chemistry & Geochemistry Division, Ansan, Korea (Republic of)

    Dong-Jin Kang

  5. Korea Institute of Ocean Science & Tech., Deep-Sea & Seabed Resources Research Cen, Ansan, Korea (Republic of)

    Se-Jong Ju

  6. Korea Institute of Ocean Science & Tech., Korean Seas Geosystem Research Unit, Ansan, Korea (Republic of)

    Sang-Hoon Lee

  7. University of Rhode Island, Graduate School of Oceanography, Kingston, Rhode Island, USA

    Mark Wimbush

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Kim, TH., Kim, J., Kim, G. (2016). Uranium Series Radionuclides. In: Chang, KI., et al. Oceanography of the East Sea (Japan Sea). Springer, Cham. https://doi.org/10.1007/978-3-319-22720-7_8

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