Comparison of Fukushima and Chernobyl

These maps below are to compare Fukushima and Chernobyl though it’s only about Cs-137.

The important point is, in Chernobyl, it was only in Europe but in Fukushima, it’s the whole pacific ocean.

The US west coast is covered with pale blue, but it means most of the fallout fell into the pacific ocean, from which west coast and continental US rain arises.

Also, when you think about internal exposure, the further the fallout travels, the more risky it becomes.

Why? Because smaller particles fly further, which causes severe internal exposure.

The graph below shows the relationship of the size of the particles and damaged organs.

X axis: size of the particles.

Y axis: % of particles attached to your organ.

Japanese terms,

胸部(即排出): taken into the lungs but can get away soon.

口呼吸の場合: When you breathe with your mouth.

胸部(長期): taken into the lungs and stay long.

鼻部: breathe from nose and particles are attached inside of your nostrils.

Map of ground deposition of caesium-137 for the Fukushima-Daichii accident.

Map of ground deposition of caesium-137 for the Chernobyl accident

Further details can be read from this site.

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.


November 2011