Black rain fell in Chiba, “5400 Bq/L of beta nuclide in March of 2011”

On 9/28/2012, ministry of education, culture, sports, science and technology released the report of Japan Chemical Analysis Center about their monitoring data of beta nuclide. In 2011, they took environmental samples, such as dust and soil etc..from every prefecture except for Fukushima and Miyagi.

From their sample of rainwater in Chiba, they measured high level of beta nuclide.






Sample : Rainwater in Chiba

Date : March, 2011

Beta nuclide (L) : ND ~ 5,400 Bq/L  (It had been ND ~ 4.2 Bq/L in the past 11 years before 311)

Beta nuclide (m2) : ND~47,000Bq/m2 (It had been ND ~ 48 Bq/m2 in the past 11 years before 311)


Black rain fell in Chiba, "5400 Bq/L of beta nuclide in March of 2011"




Français :

Une pluie noire est tombée sur Chiba en mars 2011 : 5 400 Bq/L de bêta-nucléides

Le 28 septembre 2012, le ministère de l’éducation, de la culture, des sports, de la science et des technologies a publié le rapport du Japan Chemical Analysis Center sur les données de leur surveillance des bêta-nucléides. Ils avaient pris des échantillons en 2011, tels que de la poussière, du sol, etc… dans toutes les préfectures sauf celles de Fukushima et Miyagi.

De leurs échantillons d’eau de pluie de Chiba, ils ont relevé de hauts niveaux de bêta-nucléides.


Échantillon : eau de pluie de Chiba
Date : March, 2011
Bêta-nucléides (L) : ND ~ 5 400 Bq/L (C’était ND ~ 4,2 Bq/L sur les 11 années précédant le 11-3)
Bêta-nucléide (m²) : ND~47 000Bq/m² (C’était ND ~ 48 Bq/m² sur les 11 années précédant le 11-3)

Une pluie noire est tombée sur Chiba en mars 2011 : 5 400 Bq/L de bêta-nucléidesSource

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