By Bill Powell and Hideko Takayama20 April 2012 FORTUNE – More than a year has passed since a massive earthquake and a series of tsunamis triggered the worst accident at a nuclear power plant since Chernobyl in 1986, but the epic debacle at the Fukushima Daiichi nuclear power station remains front and center in Japan, […]
By DAVID JOLLY9 April 2012 The other day, a ninth-grade student e-mailed me to ask about the plight of the bluefin tuna. What, he wanted to know, should the government be doing to help keep those endangered fish alive? As a journalist with an interest in marine conservation, I’ve written extensively on the (mostly unsuccessful) […]
By Marla Cone30 March 2012 LONG BEACH, California – Kelp off Southern California was contaminated with short-lived radioisotopes a month after Japan’s Fukushima accident, a sign that the spilled radiation reached the state’s coastline, according to a new scientific study. Scientists from California State University, Long Beach tested giant kelp from the ocean off Orange […]
By Jesse Emspak, LiveScience Contributor2 April 2012 Radioactive material from the Fukushima nuclear disaster has been found in tiny sea creatures and ocean water some 186 miles (300 kilometers) off the coast of Japan, revealing the extent of the release and the direction pollutants might take in a future environmental disaster. In some places, the […]
By HIROKO TABUCHI29 March 2012 TOKYO – The damage to one of three stricken reactors at the Fukushima Daiichi plant could be worse than previously thought, a recent internal investigation has shown, raising new concerns over the plant’s stability and complicating the post-disaster cleanup. The government has said that the plant’s three badly damaged reactors […]
By MARI YAMAGUCHI, Associated Press28 March 2012 TOKYO (AP) – One of Japan’s crippled nuclear reactors still has fatally high radiation levels and much less water to cool it than officials had estimated, according to an internal examination that renews doubts about the plant’s stability. A tool equipped with a tiny video camera, a thermometer, […]
22 March 2012 (Mainichi) – The Fukushima Prefectural Government revealed on March 21 that it deleted five days of early radiation dispersion data almost entirely unread in the wake of the meltdowns at the Fukushima No. 1 nuclear plant. The data from the System for Prediction of Environmental Emergency Dose Information (SPEEDI) — intended to […]
By Charlie Smith 19 March 2012 A Japanese citizen watchdog has reported that cesium-137 levels rose more than five times in Fukushima over a 24-hour period between March 15 and 16. The online Fukushima Diary pointed out that there were no megabecquerels per square kilometre of cesium-137 detected between March 8 and March 11. But […]
グレイは放射線が物質に当たった時のエネルギー量を表し、大気中の放射線量１グレイは１シーベルトに換算できます。 【参考】健康安全研究センターで平常時に観測されていた測定値：１時間あたり0.028～0.079マイクロシーベルト（平均値は概ね、0.035マイクロシーベルト／時）で推移＜上記の緑色の帯の範囲＞。 Machine translation: Grey represents the amount of energy when radiation hits the material, you can convert the atmospheric radiation 1 gray dose of 1 sievert. [Wikipedia: The gray (symbol: Gy) is the SI derived unit of absorbed radiation dose of ionizing radiation (for example, X-rays), and is defined as the absorption of one […]
Fukushima City at EveryTrail By arevamirpal::laprimavera 16 March 2012 Professor Yukio Hayakawa was armed with 4 different radiation survey meters. One of the reasons he went to Fukushima was apparently to test the survey meters and compare the readings. The entire walk took 7 hours yesterday, says Hayakawa in his tweet, nothing compared to mountain […]
