In the shorter term, the government has estimated a quake could cause ¥220 trillion in economic damage.
Nankai Trough megaquake could cause ¥1,410 trillion damage to Japan and dent economy for 20 years: report
KYODO JUN 7, 2018
A massive earthquake predicted to occur in Japan within the next 30 years could cause ¥1,410 trillion ($12.8 trillion) in damage to the economy, much more than a government estimate, a construction industry body said Thursday.
The estimate is based on an analysis of a magnitude 8 to 9 quake, followed by tsunami, along the Nankai Trough that extends southwest from the Pacific coast of central Japan.
The damage would include ¥1,240 trillion resulting from a prolonged slowdown in economic activity due to destroyed infrastructure, in addition to ¥170 trillion in initial damage to buildings, factories and personal properties, the Japan Society of Civil Engineers said in a report.
The long-term estimate, the first of its kind for a Nankai Trough earthquake, is based on the assumption that it would take 20 years for the economy to recover after the disaster.