Cesium from incineration ash of normal garbage is not decreasing in Tochigi

It has been 16 months since 311, but still high level of cesium is found in incineration ash of normal garbage. It means a certain amount of cesium is still coming from Fukushima. Other nuclides are not analyzed.

From the beginning of 2012, cesium from incineration ash is not decreasing in Ashikaga city, Tochigi. (185km from Fukushima)

As the whole ecosystem, cesium is being accumulated in the environment.

Cesium from incineration ash of normal garbage is not decreasing in Tochigi

On 8/30/2012, Ashikaga city government published the data of cesium detected from incineration ash.

The incineration ash is not from disaster debris, only from normal garbage.

The cesium (Cs-134/137) amount in the total of fly ash and incineration ash is like below.

Cesium from incineration ash of normal garbage is not decreasing in Tochigi


This shows the cesium amount is not decreasing as time passes. It dropped down once in February, but had a peak in June.

Though it has ups and downs, it is not in decreasing trend.





Français :

Le césium des cendres d’incinération des ordures normales ne décroît pas à Tochigi

16 mois se sont écoulés depuis le 11- mais on trouve toujours de hauts niveaux de césium dans les cendres d’incinération des ordures normales. Cela signifie qu’une certaine quantité de césium continue d’arriver de Fukushima. Les autres nucléides ne sont pas suivis.

Depuis le début de 2012, le césium des cendres d’incinération ne diminue pas dans la ville d’Ashikaga, préfecture de Tochigi. (à 185 km de Fukushima)

Comme pour tout l’écosystème, le césium s’est accumulé dans l’environnement.

Le césium des cendres d'incinération des ordures normales ne décroît pas à Tochigi

Le 30 août 2012, les autorités de la ville d’Ashikaga ont publié leurs données sur le césium détecté dans leurs cendres d’incinération.

Les cendres d’incinération ne proviennent pas des débris de la catastrophe, seulement des ordures normales.

La quantité de césium (Cs-134/137) du total des cendres volantes et d’incinération ressemblent à ceci :

Le césium des cendres d'incinération des ordures normales ne décroît pas à Tochigi

Ceci montre que la quantité de césium ne décroît pas avec le temps. Elle est descendue une fois en février mais il y a eu un pic en juin. Bien qu’il y ait des montées et des descentes, la tendance n’est pas sur une pente descendante.


  1. Apparently, the trend of contamination in the data rose during February and June but fell since July so far. Probably this trend happenes because of the seasonal wind patterns over the Tochigi prefecture and other Kanto region. Therefore, the trend curve will rise after the wind changes again in the next winter.

    Probably, during the winter season, the contaminants from Fukushima NPP come and deposit in Tochigi and other areas of the Kando region. The contaminats, then, get into the people’s life and get burned later and, then, show such a rise during late winter and early summer.
    During summer, the wind pattern changes and the contaminants now go to north or west daily into the cities such as Sendai, Yamagata, Morioka and Niigata. Probably such cities will see a rise in the similar ash contamination now.

    In the so-called Kanto region which includes the entire Tokyo Metropolis area, the winter wind comes not only from north-west but also from north-east (from around the Fukushima NPP site) in general.

    As was the case during the first week of the Fukushima disaster of March 11, 2001, the winter wind came from west or north-west to Fukushima prefecture during last winter.
    It often makes a large swirl off the Fukushima Coast later, almost daily. And, then, the wind travels on to the Kanto region to engulf the most populated region of Japan during winter.

    This wind pattern of winter can be observed in the daily forecast of streamline over Japan and Fukushima (during the winter season) in the following website, courtesy of the Swiss scientists, http://www.meteocentrale.ch/en/weather/weather-extra/weather-in-japan.html. The Swiss website also forecasts the radioactive plume, the temperature and the precipitation in Japan.

    Unfortunately, that website is the only surviving forecast service for the Fukushima radioactive plume over Japan. The German website and the Austrian website were shut down last year. The Japanese government NEVER provided the nation with such forecasts by the way.
    So, hat tip for the Swiss!

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About this site

This website updates the latest news about the Fukushima nuclear plant and also archives the past news from 2011. Because it's always updated and added live, articles, categories and the tags are not necessarily fitted in the latest format.
I am the writer of this website. About page remains in 2014. This is because my memory about 311 was clearer than now, 2023, and I think it can have a historical value. Now I'm living in Romania with 3 cats as an independent data scientist.
Actually, nothing has progressed in the plant since 2011. We still don't even know what is going on inside. They must keep cooling the crippled reactors by water, but additionally groundwater keeps flowing into the reactor buildings from the broken parts. This is why highly contaminated water is always produced more than it can circulate. Tepco is planning to officially discharge this water to the Pacific but Tritium is still remaining in it. They dilute this with seawater so that it is legally safe, but scientifically the same amount of radioactive tritium is contained. They say it is safe to discharge, but none of them have drunk it.


September 2012