福岛核泄漏事件对中国海污染的研究
发布时间：2019-04-04 17:23
【摘要】：2011年3月11日日本地震和海啸导致了日本福岛核电站核放射性物质泄漏事件.利用ROMS区域海洋模式对北太平洋环流进行模拟,并在此流场中加入核放射性污染物进行测试核放射性污染物是否能够输运到中国海域.在不考虑背景场浓度的情况下,福岛泄漏的核放射性物质在泄漏后4年能基本侵入整个中国海区,并且在10年内布满整个北太平洋区域,最大值区在北美的西岸外海.相较而言,将国际原子能的观测资料进行资料同化作为背景场使模拟更接近于观测事实.考虑了背景场的模拟显示,2019年进入东中国海的核放射性物质总量达到峰值.除此之外,还计算了各个海峡核放射性污染物通量及其随时间的变化,发现核放射性污染物主要通过吕宋海峡入侵南中国海;台湾海峡、台湾以东洋面为侵入东中国海的主要通道;核放射性污染物通过托克拉海峡、对马海峡流出东中国海.同时计算表明在未考虑径流的情况下,中国东部沿海地区的核放射性污染物浓度有着明显的季节特征,华南沿海冬春核污染物浓度高于夏秋两季,而华东沿海则相反.
[Abstract]:The earthquake and tsunami in Japan on March 11, 2011 caused a nuclear and radioactive material leak at Japan's Fukushima nuclear power plant. The ROMS regional ocean model is used to simulate the circulation of the North Pacific Ocean and the nuclear radioactive pollutants are added to the flow field to test whether the nuclear radioactive pollutants can be transported to the sea area of China. Without considering the concentration of the background field, the nuclear radioactive material leaked from Fukushima can basically invade the whole Chinese sea area four years after the leak, and within 10 years it is full of the whole North Pacific region, the maximum value area is off the west coast of North America. In contrast, the international atomic energy data assimilation as a background field makes the simulation closer to the observation facts. Taking into account the simulation of background field, the total amount of nuclear radioactive material entering the East China Sea reached its peak in 2019. In addition, the flux of nuclear and radioactive pollutants and their changes with time are calculated. It is found that the nuclear radioactive pollutants mainly invade the South China Sea through the Luzon Strait. The Taiwan Strait, east of Taiwan, is the main channel to invade the East China Sea; nuclear radioactive pollutants flow from the East China Sea through the Tok'ra Strait and from the Ma Strait. At the same time, it is shown that the concentration of nuclear radioactive pollutants in the coastal area of eastern China has obvious seasonal characteristics without considering runoff. The concentration of nuclear pollutants in the south China coast in winter and spring is higher than that in summer and autumn, while in the east coast of China, the concentration is opposite.
【作者单位】： 南京信息工程大学大气科学学院;国家海洋环境预报中心;南京信息工程大学环境科学与工程学院;南京信息工程大学海洋科学学院;
【分类号】：X55
本文编号：2454014
[Abstract]:The earthquake and tsunami in Japan on March 11, 2011 caused a nuclear and radioactive material leak at Japan's Fukushima nuclear power plant. The ROMS regional ocean model is used to simulate the circulation of the North Pacific Ocean and the nuclear radioactive pollutants are added to the flow field to test whether the nuclear radioactive pollutants can be transported to the sea area of China. Without considering the concentration of the background field, the nuclear radioactive material leaked from Fukushima can basically invade the whole Chinese sea area four years after the leak, and within 10 years it is full of the whole North Pacific region, the maximum value area is off the west coast of North America. In contrast, the international atomic energy data assimilation as a background field makes the simulation closer to the observation facts. Taking into account the simulation of background field, the total amount of nuclear radioactive material entering the East China Sea reached its peak in 2019. In addition, the flux of nuclear and radioactive pollutants and their changes with time are calculated. It is found that the nuclear radioactive pollutants mainly invade the South China Sea through the Luzon Strait. The Taiwan Strait, east of Taiwan, is the main channel to invade the East China Sea; nuclear radioactive pollutants flow from the East China Sea through the Tok'ra Strait and from the Ma Strait. At the same time, it is shown that the concentration of nuclear radioactive pollutants in the coastal area of eastern China has obvious seasonal characteristics without considering runoff. The concentration of nuclear pollutants in the south China coast in winter and spring is higher than that in summer and autumn, while in the east coast of China, the concentration is opposite.
【作者单位】： 南京信息工程大学大气科学学院;国家海洋环境预报中心;南京信息工程大学环境科学与工程学院;南京信息工程大学海洋科学学院;
【分类号】：X55
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