In the case of Japan, the movement of the pacific plate underneath Japan towards the Eurasian plate is what causes the earthquakes to erupt (Foxnews, 2011).
The pacific plate on average moves at a velocity 3.2 inches per year. When these two plates move, the energy that is released as a result is what develops and results to the emergence of the earthquakes. The Japan Trench subjection zone is very delicate and experiences these shifts very frequently. This is the reason why the country has been prone to several earthquakes over the past years. The most recent earthquake experienced in this country was the greatest of them all ever witnessed.