Marine soil contamination outside of 20km area hasn’t decreased since last September

According to Tepco, Cs-134/137 in marine soil (outside of 20km area) hasn’t decreased since 9/1/2012.

On 5/17/2013, Tepco published the marine soil contamination data. They took the samples (Dry soil) at 9 locations outside of 20km area.

The sampling dates are 3/5 ~ 3/23/2013. They have conducted the marine measurement for 7 times since 9/1/2012. Though there were changes in the readings, the trend is generally stable. It suggests the possibility that the radioactive material is stably discharged to the sea. However, Tepco comments “various kinds of the tests show radioactive material is not leaking to the sea“.

(cf, Tokyo University of Marine Science,”8,000,000,000 ~ 93,000,000,000 Bq of Cs-137 can leak to the sea every single day” [URL])

 

Marine soil contamination outside of 20km area hasn't decreased since last September

 

2 Marine soil contamination outside of 20km area hasn't decreased since last September

 

3 Marine soil contamination outside of 20km area hasn't decreased since last September

 

4 Marine soil contamination outside of 20km area hasn't decreased since last September

 

5 Marine soil contamination outside of 20km area hasn't decreased since last September

 

6 Marine soil contamination outside of 20km area hasn't decreased since last September

 

7 Marine soil contamination outside of 20km area hasn't decreased since last September

 

8 Marine soil contamination outside of 20km area hasn't decreased since last September

 

9 Marine soil contamination outside of 20km area hasn't decreased since last September

 

http://www.tepco.co.jp/en/nu/fukushima-np/f1/smp/2013/images/ocean_soil_130517-e.pdf

 

 

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Français :

La contamination des fonds marins en dehors de la zone des 20 km n’a pas diminué depuis septembre dernier

 

Selon Tepco, le Cs 134/137 trouvé dans les fonds marins (en dehors de la zone des 20 km) n’a pas diminué depuis le 1er septembre 2012.

Le 17 mai 2013, Tepco publie les données sur la contamination des fonds marins. Ils ont pris des échantillons (sol sec) en 9 endroits externes à la zone des 20 km.
Les dates d’échantillonnage vont du 5 ai 23 mars 2013. Ils ont procédé 7 fois à des relevés marins depuis le 1er septembre 2012. Bien qu’il y ait des variations dans les résultats, la tendance est généralement stable. Ceci suggère la possibilité que des matières radioactives sont déversées en mer de façon continue. Tepco déclare néanmoins que “différents types de tests montrent que les matières radioactives ne fuient pas en mer“. (cf. L’université des Sciences Marines de Tokyo : “De 8 à 93 milliards de Bq de Cs 137 doivent s’écouler en mer tous les jours”)

Marine soil contamination outside of 20km area hasn't decreased since last September
2 Marine soil contamination outside of 20km area hasn't decreased since last September
3 Marine soil contamination outside of 20km area hasn't decreased since last September
4 Marine soil contamination outside of 20km area hasn't decreased since last September
5 Marine soil contamination outside of 20km area hasn't decreased since last September
6 Marine soil contamination outside of 20km area hasn't decreased since last September
7 Marine soil contamination outside of 20km area hasn't decreased since last September
8 Marine soil contamination outside of 20km area hasn't decreased since last September
9 Marine soil contamination outside of 20km area hasn't decreased since last September

http://www.tepco.co.jp/en/nu/fukushima-np/f1/smp/2013/images/ocean_soil_130517-e.pdf

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