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.
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.
我周围一群专家,日本相关会议可不少,各类相关专家该去开会的一点不耽误。这些都经过计算的好嘛!我自己也算过的…
那点量还不如多吃个香蕉高。
你去海拔高的地方花一趟雪也不少辐射呢,不比你去日本低。
你知道当年国内非典时候,老百姓是怎么样被政府科普的吗?防疫站的统计数字是怎么样一点点被放出来的吗?
再说一便,这次日本辐射,最大杀伤力并不是来自于堆芯瞬间爆炸释放出来的,而是当时为了浇灭爆炸用了大量的水,这些被污染了的水去哪里了你知道吗?
http://phys.org/news/2016-06-fukushima-oceans-years.html
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.
回复的好,不过阴谋论者是不会相信数据和专家的。
拜託日本米不是因為在日本本土種的就好吃謝謝,是因為米種,水質,氣侯各方面配合起來,現在的懷疑是如果本來種的出來的米但因輻射的條件改變跟本來的品質不能比了,混在原來好吃的錦米拉低錦米品質
我上面不就說了土地水質米種至少三個變因,但是現在日本土地水質改變了造成品質不好了,原來我是覺得10年錢前左右的錦米跟日本米沒兩樣,但近兩年的錦米明顯品質不好,所以懷疑就是用其他像福島米,或者美國土地有改變,但明顯日本可能性更大一點
不是心裡作用,我也沒把錦米跟其他米比,就是現在的錦米跟以前的錦米比,光是看現在的錦米都是碎的顆粒不飽滿,口感也沒以前好了,如果你是近年才吃可能對你就沒區別了,我一直都吃錦米的所以我覺得差別很明顯,再者福島核外洩的問題是跟包含地下水跟附近整體環境,不是光核廢料往海裡倒跟種稻沒關係的問題
真有很多是来显示脑子是闲置的。
如果真的只是陳米跟新米的區別那錦米大概就是騙子,他的包裝上有新米的字樣,再者不可能完全只供陳米,我曾試過在不同超市買在網上買都是不好的米粒,所以我已經不吃半年了
"插一句哈,铯137 (核爆产物)半衰期是30年。以前生物实验室用磷32标记DNA,RNA, 是因为磷32会替换核糖核酸中的磷31(正常元素,无放射性),用碘125 标记蛋白质,就是它能结合到蛋白质上,可想而知铯137 也可以和人体细胞的某些成分结合,而且它的半衰期又很长,基本视为无法排出,终身携带了。虽然是微量,而且每个个体不同,产生的后果也有差异。核辐射影响最大的是生殖系统和免疫系统(血液疾病)。 能不冒险就不要冒险了。很多人担心转基因食品,其实转个基因进人体细胞来有多难,和放射性物质的影响比起来,算个什么。不是危言耸听哈,愿意注意的人自然懂,都是个人的选择了。"
转贴大家讨论一下就是脑残?你这种口无遮拦的还真是智商情商双高呢。