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Japan's Megaquake ThreatJapan's Megaquake Threat
Japan has issued a "megaquake advisory". This is a warning of a possible massive earthquake along the Nankai Trough occurring in the next 30 years with a 70 per cent chance of a 8.0 or higher magnitude. But just how destructive could this quake be?Japan has issued a "megaquake advisory". This is a warning of a possible massive earthquake along the Nankai Trough occurring in the next 30 years with a 70 per cent chance of a 8.0 or higher magnitude. But just how destructive could this quake be?