Simulation of the influence of <sup>137</sup>Cs from nuclear experiments on China seas

Zhao Chang; Qiao Fangli; Wang Guansuo; Shu Qi; Xia Changshui

doi:10.3969/j.issn.0253-4193.2015.03.002

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Zhao Chang, Qiao Fangli, Wang Guansuo, Shu Qi, Xia Changshui. Simulation of the influence of 137Cs from nuclear experiments on China seas[J]. Haiyang Xuebao, 2015, 37(3): 15-24. doi: 10.3969/j.issn.0253-4193.2015.03.002

Citation:

Zhao Chang, Qiao Fangli, Wang Guansuo, Shu Qi, Xia Changshui. Simulation of the influence of ¹³⁷Cs from nuclear experiments on China seas[J]. Haiyang Xuebao, 2015, 37(3): 15-24. doi: 10.3969/j.issn.0253-4193.2015.03.002

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Simulation of the influence of ¹³⁷Cs from nuclear experiments on China seas

doi: 10.3969/j.issn.0253-4193.2015.03.002

1.
College of Physical and Environmental Oceanography, Ocean University of China, Qingdao 266100, China;The First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China
2.
The First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China

Received Date: 2014-01-14

Abstract

Abstract

Since 1945,thousands of nuclear experiments have been carried outin many countries. Those experiments,performed either in atmosphere or under seawater,have posed a significant distribution to the radionuclide contamination on the world oceans. The distribution and evolution process of radioactive materials in the ocean have to be studied based on the long-term pollution characters,which requires a marine radionuclides model to be established. Thus in this paper,we have established a quasi-global marine radionuclides model to study the transport,distribution and evolution of the ¹³⁷Cs in the China seas,resulting from the nuclear experiments since 1945. The ¹³⁷Cs is introduced into seawaters not only from the sub-water experiments but also from the global fallout due to atmospheric nuclear experiments. The simulated vertical and horizontal distribution of the ¹³⁷Cs agrees well with the observation. The decaying process of the ¹³⁷Cs is also presented in the simulation. The ¹³⁷Cs from nuclear experiments entered in China seas since the 1940s. In the early 1960s,the concentration of ¹³⁷Cs in China seas reached its maximum and then reduced gradually due to the decay of the ¹³⁷Cs and the dilution from sea waters. By 2011,the concentration of ¹³⁷Cs in China seas is less than 2 Bq/m³ and the concentration of ¹³⁷Cs is higher in the South China Sea than in the other seas.
- nuclear experiments,
- marine radionuclides model,
- ¹³⁷Cs,
- China seas

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