AdvertisementCan A Big Earthquake Trigger Another One?August 23, 2013Christopher JoycefacebookEmailKesennuma, in the Tohoku region of Japan, was devastated in a March 11, 2011, earthquake and tsunami. A researcher studying recent mega-quakes says this one, centered some 300 miles from Tokyo, could actually mean an increased risk of a quake hitting Japan's capital, one of the most populous metropolitan areas in the world. (Barcroft Media/Landov)