A Japanese study has found that the locked zone in the Nankai Trough is not permanent but changes over time, further complicating the task of predicting megaquakes along the fault line. A locked zone is where tectonic plates merge, allowing stress to build up until it is released in an earthquake. In the case of the 900km (560-mile) long Nankai Trough off Japan’s Pacific coast, it is where the Philippine plate meets the Eurasian plate. The Philippine plate is slipping under the Eurasian plate at...
More than 2 million cars could be damaged by tsunami waves in the event of a megaquake along the Nankai Trough off Japan’s Pacific coast, according to a survey by an organisation offering free rental vehicles to disaster victims. The survey, which covered 12 of Japan’s 47 prefectures, including Aichi in central Japan, showed that at least 2.04 million privately owned vehicles could be hit by tsunami waves following a magnitude-8 or -9 earthquake – about five times the number of vehicles damaged...