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Japan Background Radiation Levels By Prefecture Area

Politics / Environmental Issues Mar 23, 2011 - 11:37 AM GMT

By: Jesse


"Updated on March 21, 2011 21:20 (JST)(Japan Standard Time) nGy/h (nano- Grays per hour)Realtime radiation data collected via the System for Prediction of Environment Emergency Dose Information(SPEEDI) These Results are the maximum values of the space those rate distributions shown from local governments in the latest updated date and time.

Not surprisingly, Miyagi , Fukushima and Ishikawa are completely N/A, as every single reading is Under Survey, may be unavailable sensors because of Tsunami (or maybe censored?)."

Background radiation comes from many sources, including medical x-rays, radon and cosmic rays as the usual suspects. Radon is a decay product of the uranium series, and decays by emitting an alpha particle. The direct parent of Radon is Radium, which emits gamma and alpha particles. Radon gas has different levels of concentration in buildings and can vary considerably.

In the cases from around the world, in normal areas, the dose rates were less than 100 nano Grays per hour (0.01 milli rem).

Those in Japan who can take reliable radiation readings and report them to a central independent source can do so here.

By Jesse

Welcome to Jesse's Café Américain - These are personal observations about the economy and the markets. In providing information, we hope this allows you to make your own decisions in an informed manner, even if it is from learning by our mistakes, which are many.

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Disclaimer: The above is a matter of opinion provided for general information purposes only and is not intended as investment advice. Information and analysis above are derived from sources and utilising methods believed to be reliable, but we cannot accept responsibility for any losses you may incur as a result of this analysis. Individuals should consult with their personal financial advisors.

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23 Mar 11, 19:57
Japan Background Radiation Levels Very Low

With the possible exception of Miyagi, Fukkushima and Ishikawa, the chart would indicate that the bordering regions are registering very low radiation levels. A typical radiation monitor would barely pick up anything that low. In fact, one would get several times more exposure from a radium wrist watch.

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