福島核泄漏事件對中國海污染的研究
發(fā)布時間:2019-04-04 17:23
【摘要】:2011年3月11日日本地震和海嘯導致了日本福島核電站核放射性物質(zhì)泄漏事件.利用ROMS區(qū)域海洋模式對北太平洋環(huán)流進行模擬,并在此流場中加入核放射性污染物進行測試核放射性污染物是否能夠輸運到中國海域.在不考慮背景場濃度的情況下,福島泄漏的核放射性物質(zhì)在泄漏后4年能基本侵入整個中國海區(qū),并且在10年內(nèi)布滿整個北太平洋區(qū)域,最大值區(qū)在北美的西岸外海.相較而言,將國際原子能的觀測資料進行資料同化作為背景場使模擬更接近于觀測事實.考慮了背景場的模擬顯示,2019年進入東中國海的核放射性物質(zhì)總量達到峰值.除此之外,還計算了各個海峽核放射性污染物通量及其隨時間的變化,發(fā)現(xiàn)核放射性污染物主要通過呂宋海峽入侵南中國海;臺灣海峽、臺灣以東洋面為侵入東中國海的主要通道;核放射性污染物通過托克拉海峽、對馬海峽流出東中國海.同時計算表明在未考慮徑流的情況下,中國東部沿海地區(qū)的核放射性污染物濃度有著明顯的季節(jié)特征,華南沿海冬春核污染物濃度高于夏秋兩季,而華東沿海則相反.
[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.
【作者單位】: 南京信息工程大學大氣科學學院;國家海洋環(huán)境預(yù)報中心;南京信息工程大學環(huán)境科學與工程學院;南京信息工程大學海洋科學學院;
【分類號】:X55
本文編號: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.
【作者單位】: 南京信息工程大學大氣科學學院;國家海洋環(huán)境預(yù)報中心;南京信息工程大學環(huán)境科學與工程學院;南京信息工程大學海洋科學學院;
【分類號】:X55
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