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Historical Richter 6.0 or
greater events. The first
problem is that statistically
there are not enough powerful
earthquakes. That can be
interpreted as increasing the
likelihood of a powerful event
in the future. As can be seen
on the next page, the burst of
activity in the middle of the
20th century was unwelcome -
there were a great deal more
Japanese lives and property
compared to the situation
when the earliest known
Richter 8.3 struck in 648 AD.
The population of Japan was
73 million in 1940; 84 million
in 1950 and 127 million in
2010.
greater events. The first
problem is that statistically
there are not enough powerful
earthquakes. That can be
interpreted as increasing the
likelihood of a powerful event
in the future. As can be seen
on the next page, the burst of
activity in the middle of the
20th century was unwelcome -
there were a great deal more
Japanese lives and property
compared to the situation
when the earliest known
Richter 8.3 struck in 648 AD.
The population of Japan was
73 million in 1940; 84 million
in 1950 and 127 million in
2010.