Such massive earthquakes appear to have occurred at approximately 600-year intervals.

Location map links point to maps on which the earthquake appears.

Instead of an explosion, a violent earthquake appears to take place, which is again a characteristic of kinetic bombardment.

The same earthquake appears to have caused damage across the city and at neighbouring Nakum.

But to an extent not seen in decades, the earthquake appears to have united the country, long divided along ethnic and sectarian lines.

Both interplate and intraplate earthquakes appeared in the aftershocks offshore Sanriku coast with considerable proportions.

The great earthquake appears to have snuffed out 25 percent of the remaining population.

A sudden earthquake appears and is knocked out.

David Berson, chief economist for the Federal National Mortgage Association, said that "the earthquake appeared to keep people from buying new homes."

Based on geological evidence, however, stronger earthquakes appear to have occurred at approximately 600-year intervals.