Japan’s long-dreaded “big one” earthquake could kill almost 300,000 people along its urbanised Pacific coast, create 12.3mn evacuees and cause $1.8tn of economic damage, a new government forecast has warned.
The report, published on Monday in the first update for a decade, centred on a worst-case scenario for the destruction that could be wrought by a magnitude 9 quake in a 900km-long ocean trench where tectonic plates intersect that is known as the Nankai Trough.
Disaster planners based their forecasts on a quake and associated tsunami that would hit along most of Japan’s coastline west of Tokyo.
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