The major earthquake that triggered tsunami in the Tohoku region Tuesday was caused by a type of jolt that is likely to cause tidal waves, according to the Meteorological Agency.
The temblor also caused tsunami across a widespread area because it originated at a shallow point under the seabed.
The tsunami measuring up to 1.4 meters were the highest since the magnitude-9 Great East Japan Earthquake of March 11, 2011, that killed more than 15,000 people.
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