Niseko October 2011 Radiation Results

This is the third month of collecting radiation dose data (Gamma mSv) using a DoesRAE 2 Electronic Dosimeter and our October results show the radiation levels in the Niseko area are still well below global averages.

Niseko Daily Radiation Dose Gamma (mSv) Monthly Comparison, October 2011

Niseko Daily Radiation Dose Gamma (mSv) Monthly Comparison, October 2011

Niseko Daily Radiation Dose Gamma (mSv), October 2011

Niseko Daily Radiation Dose Gamma (mSv), October 2011

We update the publicly available spreadsheet frequently and will continue to take readings throughout the 2011/12 winter season. If you have any questions, suggestions or feedback feel free to add a comment below.

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Our data is licensed under a Creative Commons Attribution-ShareAlike 2.5 Generic License. Feel free to copy, distribute and transmit the work, adapt the work and to make commercial use of the work if you do please credit us by linking back to our website.

The Hokkaido Government measures the radiation levels on a daily basis at multiple sites across the region and publish the results on this website. The closest monitoring station to Niseko is detailed in the second table, in the second row labelled as “Shiribeshi” and “Kutchan”.

Radiation in the air is not the only risk to human health and the level of radioactive caesium in the soil should also be considered. The Hokkaido Government have also been measuring the amount of caesium in agricultural farm land and have published the results from the findings as of 13 September 2011 on this page of their website.

To put that information into perspective we have taken the world wide average for caesium-137 from the second page of this document.

Assuming the worldwide average for caesium-137 is 0.4 pCi/g and the largest concentration found in Hokkaido is 10.3 Bq/kg we need to do some math to convert pCi to Bq using this conversion table to make this more meaningful.

“1Bq is equivalent to 27 pCi”

10.3/1000 (to get Bq per gram) = 0.0103 multiplied by 27(1Bq=27pCi) = 0.27pCi/g or to put it another way Hokkaido farm land has 32.5% less caesium-137 than the worldwide average.

This fills us with confidence about the safety of Hokkaido’s produce.

There are a number of businesses in the Niseko area who have also been doing there own research and support post the March 2011 earthquake and tsunami.

Ezo Seafoods have been out to meet their suppliers to check the seafood they buy is safe, find out more on their blog.

Taiga Projects were responsible for organising the Niseko Tsunami Relief Program that brought families from the Fukushima area to Niseko for the summer, it was hugely successful and testament to their organisational skills, read more about it on their blog.

  1. wonder if the test from the government is true or not!! Just worry about the kids because they are young!!

    • @stephen – it’s a valid concern, and one we share, which is why we’ve been taking our own readings.
      From the data we’ve collected so far there’s no reason to be alarmed.
      Also worth pointing out that our readings have been comparable to both government and independent sources – we’re all getting roughly the same low readings.

  2. Can you please tell me if eating the snow in Niseko is a silly thing today. My husband and his friends have been making drinks with freshly fallen snow off their balcony and I am a bit concerned.

    • @Loretta – you shouldn’t eat snow unless you are stranded and require it to survive – and even then you should [if possible] boil it first, or at the very least pass it through some type of filtering device.

      The reason you shouldn’t eat snow is because snowflakes form on small pieces of dust. When they fall from the clouds they pick up pollution in the air. The pollution sticks to the snowflake, then the flake falls to the ground. If you eat the snow you might also be eating pollution and dirt.

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