Mt. Tokachidake had over 130 volcanic earthquakes right under the crater on 4/4/2015 / More than ever

On 4/5/2015, Sapporo District Meteorological Observatory announced they observed the significant increase of volcanic earthquakes of Mt. Tokachidake.

Mt. Tokachidake is situated in the middle of Hokkaido of Japan.

According to Sapporo District Meteorological Observatory, they measured 134 volcanic earthquakes on 4/4/2015. 4 more quakes were observed on 4/5/2015 by 8am. All the epicenters were right under the crater.


The volcanic earthquake has happened increasingly more frequently since 1997. It has not happened more than 134 times a day since they recorded in 1964.



Français :

Le 4 avril, le Mt. Tokachidake a connu plus de 130 séismes volcaniques sous son cratère, un record


Le 5 avril 2015, L’Observatoire Météorologique du Département de Sapporo (SDMO) a déclaré qu’ils ont observé une importante augmentation des séismes volcaniques sur le Mt. Tokachidake. Le Mt. Tokachidake est situé au milieu de l’île japonaise d’Hokkaido.

Selon l’Observatoire Météorologique du Département de Sapporo, ils ont relevé 134 séismes volcaniques le 4 avril 2015 et 4 de plus le 5 vers 08:00. Tous les épicentres étaient exactement sous le cratère.

Les séismes volcaniques se produisent de plus en plus fréquemment depuis 1997. Ils n’en ont jamais compté 134 en un seul jour depuis qu’ils ont commencé à le faire en 1964.

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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.


April 2015