Abstract
After the damage of Fukushima Daiichi Nuclear Power Plant, a great number of radioactive materials were released into the Pacific Ocean. Therefore, it is necessary to research on the temporal and spatial distribution of these radionuclides. We use Princeton Ocean Model to simulate the circulation of the coast water of Fukushima NPP and obtain the concentration of caesium-137 by solving the diffusion equations. We employ the Monte Carlo N-particle (MCNP) code to assess the external doses caused by these contaminated sea water. To improve the efficiency and effectiveness of volume source in MCNP code, we establish a transformation method between spot source and volume source, and determine an appropriate range of volume source. Finally, we calculate the absorbed doses of every organ/tissue and the effective dose of a human body.
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References
Aoyama M, Hirose K, Nemoto K, et al. 2008. Water masses labeled with global fallout 137Cs formed by subduction in the North Pacific. Geophys Res Lett, 35: L016041
Behrens E, Schwarzkopf F U, Lubbecke J F, et al. 2012. Model simulations on the long-term dispersal of Cs-137 released into the Pacific Ocean off Fukushima. Environ Res Lett, 7: 0340043
Bleck R, Halliwwell G, Wallcraft A, et al. 2002. Hybrid coordinate ocean model. User’s Manual
Blumberg A F, Meller G L. 1987. A description of a three-dimensional coastal ocean circulation model. In: Heaps N, ed. Three-Dimensional Coastal Ocean Models. Am Geophys Union, 68: 1–16
Buesseler K O, Jayne S R, Fisher N S, et al. 2012. Fukushima-derived radionuclides in the ocean and biota off Japan. Proc Natl Acad Sci USA, 109: 5984–5988
Chen C, Beardsley R C, Cowles G. 2006. An unstructured grid, finite-volume coastal ocean model FVCOM. User’s Manual
Chen J, Tang B, Ma J, et al. 2009. He Anquan Zonghe Zhishi Xiuding Ban (in Chinese). Beijing: China Environmental Science Press
Chen Z, Zhao L, Lee K. 2010. Environmental risk assessment of offshore produced water discharges using a hybrid fuzzy-stochastic modeling approach. Environ Model Softw, 25: 782–792
Egbert, G D, Erofeeva S Y. 2002. Efficient inverse modeling of barotropic ocean tides. J Atmos Ocean Technol, 19: 183–204
Ezer T, Mellor G L. 2000. Sensitivity studies with the North Atlantic sigma coordinate Princeton Ocean Model. Dyn Atmos Oceans, 32: 185–208
Karcher M J, Gerland S, Harms I H, et al. 2004. The dispersion of Tc-99 in the Nordic Seas and the Arctic Ocean: A comparison of model results observations. J Environ Radioact, 74: 185–198
Kawamura H, Kobayashi T, Furuno A, et al. 2011. Preliminary numerical experiments on oceanic dispersion of I-131 and Cs-137 discharged into the ocean because of the Fukushima Daiichi Nuclear Power Plant disaster. J Nucl Sci Technol, 48: 1349–1356
Lazarine A D. 2006. Medical physics calculations with MCNP: A primer. Doctoral Dissertation. Texas A&M University
Maderich V, Bezhenar R, Heling R, et al. 2014. Regional long-term model of radioactivity dispersion and fate in the Northwestern Pacific and adjacent seas-application to the Fukushima Daiichi accident. J Environ Radioact, 131: 4–18
Mellor, G L. 2004. User’s Guide for a Three-dimensional Primitive Equation Numerical Ocean Model. Princeton University, New Jersey
Nakano M, Povinec P P. 2012. Long-term simulations of the Cs-137 dispersion from the Fukushima accident in the world ocean. J Environ Radioact, 111: 109–115
Nielsen S P, Bengtson P, Bojanowsky R, et al. 1999. The radiological exposure of man from radioactivity in the Baltic Sea. Sci Total Environ, 238: 133–141
Orre S, Smith J N, Alfimov V, et al. 2010. Simulating transport of 129I and idealized tracers in the northern North Atlantic Ocean. Environ Fluid Mech, 10: 213–233
Qiao F L, Wang G S, Zhao W, et al. 2011. Predicting the spread of nuclear radiation from the damaged Fukushima Nuclear Power Plant. Chin Sci Bull, 56: 1890–1896
Su J, Zeng Z, Yu W, et al. 2011. Monte Carlo calculation of artificial radionuclide radiation doses for aquatic organisms in the sea area around Daya Bay Nuclear Power Plant (in Chinese). J Oceanogr Taiwan Strait, 3: 301–309
Tsumune D, Tsubono T, Aoyama M, et al. 2012. Distribution of oceanic 137Cs from the Fukushima Daiichi nuclear power plant simulated numerically by a regional ocean model. J Environ Radioact, 111: 100–108
Wallcraft A, Carroll S N, Kelly K A, et al. 2003. Hybrid coordinate ocean model. User’s Guide
Wu, J. 1982. Wind-stress coefficients over sea-surface from breeze to hurricane. J Geophys Res Oceans Atmos, 87: 9704–9706
X-5 Monte Carlo Team. 2003. MCNP—A general n-particle transport code, version 5. Manual
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Guan, Y., Shen, S. & Huang, H. The numerical simulation of caesium-137 transportation in ocean and the assessment of its radioactive impacts after Fukushima NPP release. Sci. China Earth Sci. 58, 996–1004 (2015). https://doi.org/10.1007/s11430-014-5032-z
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DOI: https://doi.org/10.1007/s11430-014-5032-z