Fallout level in Tokyo was the highest this March since May of 2011

2 Fallout level in Tokyo was the highest this March since May of 2011


According to Tokyo Metropolitan Institute of Public Health, the fallout level (Cs-134/137) in Tokyo was the highest reading this March since May of 2011. (64 Bq/m2)

It was increasing since this February. The reason is not known.

Fallout level in Tokyo was the highest this March since May of 2011


↓ Location of the measurement


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Français :

Le niveau des retombées sur Tokyo en mars dernier a été au plus haut depuis mai 2011


2 Fallout level in Tokyo was the highest this March since May of 2011

Selon l’Institut Métropolitain de Santé Publique de Tokyo (Tokyo Metropolitan Institute of Public Health), le niveau des retombées (en Cs 134/137) dans Tokyo en mars dernier a été le plus haut relevé  depuis mai 2011. (64 Bq/m²)
C’est en augmentation depuis février. La raison n’en est pas connue.

Fallout level in Tokyo was the highest this March since May of 2011

↓ Lieu des mesures

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4 Responses to “Fallout level in Tokyo was the highest this March since May of 2011”

  1. Biddie says:

    May bee the additional fallout is from “them” burning radioactive debris that they have been collecting from around Fukushima area. I do remember seeing some time back that “they” were going to spread radioactive debris all over the whole country and burn it. I guess that they want to provide the opportunity to all citizens to be equally contaminated ;) Just one possibility though.

  2. anonymous says:

    Geiger counter, in tokyo, which usually reads about 35 CPM these days, spiked yesterday at 88. It was windy, with the winds blowing from the North.

    I’m wondering if this might have something to do with
    a) continued releases at TEPCO?
    (b) farmers burning – yes there are lots of farmers in tokyo who are allowed to burn farm waste in their fields and use the ash as fertilizer
    (c) wind blown dust because fields are mostly bare this time of year and the ground is dry
    (d) debris burning by the government, or maybe
    (e) all of the above

    Does seem to be seasonal.

    • Tatsuya says:

      Perhaps pollen as well these days.

    • buru says:

      Thank you for posting this and for the graph, Mochizuki.
      This is consistent with higher readings I have personally measured in many places around Tokyo beginning after about March 12 or so, possibly related to wind storms. This is corroborated by another group finding higher readings in western Tokyo which you posted about at that time.
      I am especially interested in 2 components of the data: the appearance of a seasonal pattern, and the relative proportion of Cs-134 and Cs-137. The relative proportion of Cs-134 and Cs-137 will help determine if this is the product of continuing nuclear reactions at fuku1, or emissions from 2011. At first glance, it looks like it’s mostly old emissions, as the Cs-134 is diminishing, but maybe not as much as it should be if it was all old emissions.
      I agree with anonymous at 1:45 a.m.: The seasonal pattern could be related to the burning of rice straw or other farm waste, the dry and sunny days that have dried the fields combined with strong seasonal winds from the north, the decay and fragmentation of leaf litter in the forests, pollen, debris burning, or new TEPCO emissions.
      Another idea I have is that the black substance, which is a melanized, radiotrophic organism, is active in the Japanese soil and also high in the atmosphere, where there is cosmic radiation which it may have evolved to use as an energy source. It is blooming now like a red tide as it is one organism able to feed on radiation. It may grow into forms which travel on the wind, lightweight nano-particle sized dandelion-shaped forms. Growing form radiation as well as sunlight would explain the large mass of black substance on the streets; it is fixing carbon, and its aeolian form enables it to travel high and far on the wind. I guess black substance should be cultured and grown to be examined under a microscope.

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