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Radiation fluctuated widely on the site after the tsunami and often correlated to fires and explosions on site. Radiation dose rates at one location between reactor units 3 and 4 was measured at 400 mSv/h at 10:22 JST, 13 March, causing experts to urge rapid rotation of emergency crews as a method of limiting exposure to radiation. [99]
On Tuesday, 15 March, news of rising radiation levels caused the Nikkei to drop over 1,000 points or 10.6% (16% for the week). [51] Other stock markets around the world were also affected; the German DAX lost 1.2% within minutes. [52] Hong Kong's Hang Seng index fell by 1.8%, while South Korea's Kospi index slumped by 1.3%. [53]
Radioactive contamination, also called radiological pollution, is the deposition of, or presence of radioactive substances on surfaces or within solids, liquids, or gases (including the human body), where their presence is unintended or undesirable (from the International Atomic Energy Agency (IAEA) definition).
The warnings were put to use on Thursday when people in the northern portion of California were sent tsunami alerts moments after a 7.0 earthquake struck just off the coast of Humboldt county at ...
Read more:7.0 earthquake rattles Northern California, spurs anxiety before tsunami warning is canceled “There’s only two ways for us to know a tsunami is occurring: We have the deep ocean ...
At an annual food safety exhibition in Tokyo held on 26 to 28 October 2011, machines were shown that could measure radiation: on conveyor belts food and other objects could be proofed by a radiation sensor, and the outcome could be read within 12 seconds. In this way a large number of objects could be checked in a very short time.
A quake that powerful could cause shaking that lasts about five minutes and generate tsunami waves up to 80 feet tall. It would damage well over half a million buildings, according to emergency ...
The committee calculated that discharging all the water to the sea in one year would cause a radiation dose of 0.81 microsieverts to the local people, whereas evaporation would cause 1.2 microsieverts. For comparison, Japanese people get 2100 microsieverts per year from natural radiation. [202]