全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...
科学通报  2012 

日本福岛放射性污染物在北太平洋海水中的输运模拟与预测

, PP. 2111-2118

Keywords: 环流模型,核泄漏,输运,预测,137Cs

Full-Text   Cite this paper   Add to My Lib

Abstract:

针对2011年3月11日地震和海啸引发的日本福岛核电站放射性污染物泄漏事件,利用ROMS海洋模式对北太平洋海洋环流进行了模拟,并在该海洋环流数值模拟结果基础上,对核泄漏物质在海洋中的输运过程进行了10年的中长期模拟和预测.模拟结果显示放射性污染物通过北太平洋低位涡水的输运通道到达我国近海的时间约为12年;表层放射性污染物随着海流最远输运到140°W后便分为南北两支,南支随着赤道流系向西输运,可以影响到菲律宾以东洋面,北支到达北美西海岸后随沿岸流向南北输运,北向输运可以影响到白令海峡;200m层的放射性污染物进入海洋后的输运分为3个部分一部分沿深层海水流动向西南输运;一部分随低位涡水团输运影响台湾以东海区;还有一部分随黑潮延伸体向东输运,并分为两支,其中一支会输运到北美西海岸,另外一支向南影响到夏威夷岛周围海域.最后,结合污染物漂移扩散模型估算了放射性污染物在海洋中的浓度扩散趋势放射性同位素137Cs的浓度高值区逐渐向东移动,2年后可达太平洋海盆中部,8年后可达北美西海岸,虽然影响范围不断扩大,但其极值浓度在不断降低.

References

[1]  1 Chino M, Nakayama H, Nagai H, et al. Preliminary estimation of release amounts of 131I and 137Cs accidentally discharged from the Fukushima Daiichi nuclear power plant into the atmosphere. J Nucl Sci Technol, 2011, 48: 1129-1134??
[2]  2 Butler D. Radioactivity spreads in Japan. Nature, 2011, 471: 555-556??
[3]  5 Masson O, Baeza A, Bieringer J, et al. Tracking of airborne radionuclides from the damaged Fukushima Dai-lchi nuclear reactors by European Networks. Environ Sci Technol, 2011, 45: 7670-7677??
[4]  7 Yutaka K. Monitoring of aerosols in Tsukuba after Fukushima Nuclear Power Plant incident in 2011. J Environ Radioact, 2011, doi: 10.1016/j.jenvrad.2011.10.011
[5]  9 Morino Y, Ohara T, Nishizawa M. Atmospheric behavior, deposition, and budget of radioactive materials from the Fukushima Daiichi nuclear power plant in March 2011. Geophys Res Lett, 2011, 38: L00G11
[6]  11 徐永福, 李春阳, 赵亮, 等. 一个太平洋海盆尺度环流模式及其模拟结果. 大气科学, 2006, 30: 927-938
[7]  12 莫慧尔, 俞永强, 刘海龙, 等. 一个高分辨率太平洋-印度洋海盆环流模式的初步结果. 热带海洋学报, 2009, 28: 56-65
[8]  13 Cai Y, Wang Z G. Simulation of Pacific Ocean Circulation based on Global Warming from 1960 to 1999. Mar Sci Bull, 2010, 12: 10-15
[9]  16 Shchepetkin A F, McWilliams J C. The Regional Ocean Modeling System (ROMS): A split-explicit, free-surface, topography following coordinates oceanic model. Ocean Model, 2005, 9: 347-404??
[10]  17 Gates W L, Mitchell J F B, Boer G J, et al. Climate modeling, climate prediction and model validation. In: Houghton J T, Canllendar B A, Varney S K, eds. Climate Change 1992, The Supplementary Report to the IPCC Scientific Assessment. Cambrige: Cambrige University Press, 1992. 101-134
[11]  19 高松, 吕咸青. HYCOM模式对赤道及北太平洋海表温度的模拟. 海洋科学进展, 2007, 25: 257-267
[12]  21 Kobashi F, Kawamura H. Variation of sea surface height at periods of 65-220 days in the subtropical gyre of the North Pacific. J Geophys Res, 2001, 106: 817-831
[13]  3 Yasunari T J, Stohl A, Hayano R S, et al. Cesium-137 deposition and contamination of Japanese soils due to the Fukushima nuclear accident, Proc Natl Acad Sci USA, 2011, 108: 19530-19534??
[14]  4 Bowyer T W, Biegalski S R, Cooper M, et al. Elevated radioxenon detected remotely following the Fukushima nuclear accident. J Environ Radioact, 2011, 102: 681-687??
[15]  6 乔方利, 王关锁, 赵伟, 等. 2011 年3 月日本福岛核泄漏物质输运扩散路径的情景模拟和预测. 科学通报, 2011, 56: 964-971
[16]  8 Stohl A, Seibert P, Wotawa G, et al. Xenon-133 and caesium-137 releases intothe atmosphere from the Fukushima Dai-ichi nuclear power plant: Determination of the source term, atmospheric dispersion, and deposition. Atmos Chem Phys, 2011, 11: 28319-28394??
[17]  10 Fang G H, Wei Z X, Wang Y G, et al. An extended variable-grid global ocean circulation model and its preliminary results of the Equatorial Pavific Circulation. Acta Oceanol Sin, 2004, 23: 23-30
[18]  14 Tsumune D, Tsubono T, Aoyama M, et al. Distribution of oceanic 137Cs from the Fukushima Dai-ichi Nuclear Power Plant simulated numerically by a regional ocean model. J Environ Radioact, 2011, doi: 10.1016/j.jenvrad.2011.10.007
[19]  15 Malcolm J, Roberts A, Clayton M, et al. Impact of resolution on the Tropical Circulation in a matrix of coupled models. J Clim, 2009, 22: 2541-2556 ??
[20]  18 赵亮, 徐永福. 边界条件对北太平洋海盆尺度环流模式的影响. 海洋科学进展, 2006, 24: 292-300
[21]  20 Xia C S, Qiao F L, Zhang Q H, et al. Numerical modeling of the quasi-global ocean circulation base on POM. J Hydrodyn, 2004, 16: 537-543
[22]  22 Suga T, Kimio H. The subtropical mode water circulation in the North Pacific. J Phys Oceanogr, 1995, 25: 958-970??
[23]  23 Liu Q Y, Hu H B. A subsurface pathway for low potential vorticity transport from the central North Pacific toward Taiwan Island. Geophys Res Lett, 2007, 34: L12710, doi: 10.1029/2007/GL029510??

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133