How did the location of the tohoku earthquake contribute to the destructive power of the tsunami ?

Most tsunamis, like the one that formed off Tohoku, are triggered by underwater tectonic activity, such as earthquakes and volcanic eruptions. The Tohoku tsunami produced waves up to 40 meters (132 feet) high, More than 450,000 people became homeless as a result of the tsunami

Explanation:

polar areas, such as antarctica or the south pole.