Distribution in water. Cs is very soluble, so it was rapidly dispersed in the ocean. Prevailing sea currents meant that some areas received more fall-out than others due to ocean mixing processes. At its peak in 2011, the 137Cs signal right at the FDNPP was tens of millions of times higher than prior to the accident. Over time, and with distance from Japan, levels decrease significantly. By 2014 the 137Cs signal 2000km North of Hawaii was equivalent to around six times that remaining from fallout from atmospheric nuclear tests from the 1960's, and about 2-3 times higher than prior fallout levels along the west coast of N. America. Most of the fallout is concentrated in the top few hundred metres of the sea. It is likely that maximum radiation levels will be attained off the North American coast in the 2015-16 period, before declining to 1-2 Bq per cubic metre (around the level associated with background nuclear weapon testing) by 2020. Sea-floor sediments contain less than 1% of the 137Cs released by the FDNPP, although the sea-floor contamination is still high close to the FDNPP. The redistribution of sediments by bottom-feeding organisms (more common near the coast) and storms is complex.
Uptake by marine life. In 2011, around half the fish samples in coastal waters off Fukushima had radiocesium levels above the Japanese 100Bq/kg limit, but by 2015 this had dropped to less than 1% above the limit. High levels are still found in fish around the FDNPP port. High levels of 131I were measured in fish in April 2011, but as this has a short radioactive half-life, it is now below detection levels. Generally, with the exception of species close to the FDNPP, there seem to be little long-term measurable effects on marine life.
Risk to Humans. The radiation risk to human life is comparatively modest in comparison to the 15,000 lives were lost as a result to the Tohoku earthquake and tsunami. So far, there have been no direct radiation deaths. The most exposed FDNPP evacuees received a total dose of 70 mSv, which (if they are representative of the general population) would increase their lifetime fatal cancer risk from 24% to 24.4%. However, there are still over 100,000 evacuees from the Fukushima area, and many industries such as fishing and tourism have been badly hit.
我朋友不是核物理专家,是搞核电站的,据说非常严重。。。
最近另外一个相关的新闻是乌克兰的切诺尔贝利核电站造了一个永久的“壳”,核污染不会外泄。这两个事故后的处理,明显苏联更甚一筹,有个纪录片讲当时飞行员跟不要命似的空投类似沙包类的物质,把核电站盖住不往外喷发核污染,好多飞行员还牺牲了。而日本,敢死队根本没组成,污水暂时储存在容器内,没过多久容器就开始leak,慢慢排入太平洋。
事故肯定非常严重,我认识的专家说福岛附近不要去为妙,但是传说中太平洋的鱼不能吃了,整个日本不能去了就过了
真的吗?好喜欢日本零食
lzmm发的那个链接里面的内容肯定是真的,从地震开始都好几年了,一直都在更新的。但是这些东西原理上都是进不了美国的。不过在意的话还是要小心点。其实超市里面很多日本零食都不是日本生产的了,很多都是泰国,台湾这些地方。
正在擦日本抹茶面霜,看到这个。唉。
苏联的处理够狠,我真心佩服,绝对是个模子!
就想知道这里的 I 是谁?有必要用这么多感叹号吗?还有,地震不止四年了吧?
我这人还就挺认真的,查了地震时间: Friday 11 March 2011。。。。
世界那么大,不吃日本出产的食物,不用日产的护肤品也不那么难啊。
但是全球化的問題就是,日本食品可能以原物料的方式混在別的食物裡,再者福島一直倒核廢料,海產早污染了
Distribution in water. Cs is very soluble, so it was rapidly dispersed in the ocean. Prevailing sea currents meant that some areas received more fall-out than others due to ocean mixing processes. At its peak in 2011, the 137Cs signal right at the FDNPP was tens of millions of times higher than prior to the accident. Over time, and with distance from Japan, levels decrease significantly. By 2014 the 137Cs signal 2000km North of Hawaii was equivalent to around six times that remaining from fallout from atmospheric nuclear tests from the 1960's, and about 2-3 times higher than prior fallout levels along the west coast of N. America. Most of the fallout is concentrated in the top few hundred metres of the sea. It is likely that maximum radiation levels will be attained off the North American coast in the 2015-16 period, before declining to 1-2 Bq per cubic metre (around the level associated with background nuclear weapon testing) by 2020. Sea-floor sediments contain less than 1% of the 137Cs released by the FDNPP, although the sea-floor contamination is still high close to the FDNPP. The redistribution of sediments by bottom-feeding organisms (more common near the coast) and storms is complex.
Uptake by marine life. In 2011, around half the fish samples in coastal waters off Fukushima had radiocesium levels above the Japanese 100Bq/kg limit, but by 2015 this had dropped to less than 1% above the limit. High levels are still found in fish around the FDNPP port. High levels of 131I were measured in fish in April 2011, but as this has a short radioactive half-life, it is now below detection levels. Generally, with the exception of species close to the FDNPP, there seem to be little long-term measurable effects on marine life.
Risk to Humans. The radiation risk to human life is comparatively modest in comparison to the 15,000 lives were lost as a result to the Tohoku earthquake and tsunami. So far, there have been no direct radiation deaths. The most exposed FDNPP evacuees received a total dose of 70 mSv, which (if they are representative of the general population) would increase their lifetime fatal cancer risk from 24% to 24.4%. However, there are still over 100,000 evacuees from the Fukushima area, and many industries such as fishing and tourism have been badly hit.
太详细了!看起来好像是这个辐射物质的半衰期很短所以现在仅仅能在少于1%的海洋鱼类中能检测到,其他的都是因为剂量太小检测不到了。我会继续吃/用我已经买了的东西,新的需要买的再观望观望。
不要再无知地说什么人家日本人生活在那里怎么办呢,你说怎么办呢,全日本国都关闭消亡吗,全日本人民都撤出来吗,撤到哪里去?
这个要问生物学家的吧
他們這樣其實也算慢性自殺了本來就是海洋國家出海產、再加上福島也污染了地下水、害人害己
混一點福島米也看不來啊~ 總之我覺得錦米的品質很有問題
另外发现这两年本地的日本人越来越多哈,不知道是不是有关系。本人在一个中西部大学城,接孩子时候竟然发现校车上超过一半的亚裔都是日本小孩了,以前的韩国中国人都成少数了。
mark一下台湾的金兰牌香油,我现在用的还是日本牌子的香油呢。
福島食品價格因為核災的關係在日本價格本來就比較低還沒人買,錦米等很多日本食品的美國進口商都是一家日商nishimoto trading,真要混應該也不是什麼難事
你是怎么脑补这么多的?