Japan Sinks (SAITO Takao)

(from ebookjapan):

Earthquakes occur in clusters in the Japanese archipelago. Volcanoes erupt, triggered by the earthquakes.

The natural cataclysms that occur one after another...

...are adapted from Sakyo Komatsu's bestseller into a manga. A new series is now available.

Official English - Fully translated. Also available on Amazon Kindle.