Models Show That Radioactive Dust From Fukushima Plant Covered 80% of N. America

Radioactive materials spewed out from the crippled Fukushima No. 1 Nuclear Power Plant reached North America soon after the meltdown and were carried all the way to Europe, according to a simulation by university researchers.

The computer simulation by researchers at Kyushu University and the University of Tokyo, among other institutions, calculated dispersal of radioactive dust from the Fukushima plant beginning at 9 p.m. on March 14, when radiation levels around the plant spiked.

The team found that radioactive dust was likely caught by the jet stream and carried across the Pacific Ocean, its concentration dropping as it spread. According to the computer model, radioactive materials at a concentration just one-one hundred millionth of that found around the Fukushima plant hit the west coast of North America three days later, and reached the skies over much of Europe about a week later.

According to the research team, updrafts in a low-pressure system passing over the disaster-stricken Tohoku region on March 14-15 carried some of the radioactive dust that had collected about 1.5 kilometers above the plant to an altitude of about 5 kilometers. The jet stream then caught the dust and diffused it over the Pacific Ocean and beyond.

The computer model used was designed to simulate the diffusion patterns of yellow sand and air pollution based on real-time weather conditions, and they presupposed particles of radioactive material 10 micrometers — 0.00001 of a meter — in diameter.

The simulation results will be published in an upcoming issue of the “Scientific Online Letters on the Atmosphere” (SOLA), an Internet-based publication of the Meteorological Society of Japan.

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Posted by Jay White on Jun 23 2011. Filed under ENVIRONMENT. You can follow any responses to this entry through the RSS 2.0. You can leave a response or trackback to this entry

5 Comments for “Models Show That Radioactive Dust From Fukushima Plant Covered 80% of N. America”

  1. Fuk-U-Shima

    Ok so what is the end date of this model? it only looks like it takes it into about april, we’ve been exposed to MUCH more than this model portrays. You “scientists” suck! POST SOME REAL FACTS PLEASE. WE ARE DYING.

  2. Very cool, some valid arguments! I appreciate you making this article online, the rest of the site is also well done. Have a good.

  3. sherri

    Um…so where are we at now? It is June 23rd now. How much more radiation have we been exposed to? That is what I want to know today…I already knew we were subjected in the first weeks of this thing. We want to know where everyone is at today with this… Has it slowed? Has it sped up? Same concentrations or more concentrated? What about now that all three reactors have “melted though”?

  4. Sorry

    …but this is an old fraud — a total fabrication, first circulated (as I recall) in March.

    Simple evidence:

    1) The levels of radiation alleged are genuinely enormous, and would set off thousands of privately owned Geiger counters, spreading absolute and well-justified terror.

    2) A secondary but telling point — these smoothly shaped zones look nothing like the output of an actual model of the spread (of anything at all) in the real atmosphere. (Maps showing the probability of an individual hurricane hitting various places look like this, and I suspect that these are where the artist got the idea for something that would look superficially plausible.)

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