Japanese Prime Minister Fumio Kishida has cancelled a planned trip to Central Asia to lead the government’s response after scientists urged people to prepare for a possible “megaquake” off the country’s southern coast.
The Japan Meteorological Agency issued its first ever “megaquake advisory” on Thursday warning of a possible future major earthquake triggered by the underwater Nankai Trough, after a magnitude 7.1 quake shook just off the eastern coast of Kyushu island earlier in the day.
The trough, which runs along Japan’s Pacific coast, was the source of past devastating earthquakes.
Seismologists at the agency held an emergency meeting after Thursday’s quake to analyse whether it had affected the nearby trough and reassessed the risk of a major quake. They urged people to observe high caution levels for about a week.
Thursday’s quake injured 16 people, most of them slightly, and caused no major damage. Tsunami advisories were issued for several areas but lifted hours later.
Mr Kishida announced that he had cancelled his planned August 9-12 trip to Kazakhstan, Uzbekistan and Mongolia as a result of the advisory.
He said: “I have decided to stay in the country at least for about a week to make sure that government measures and communication are fully in place.”
The Fire and Disaster Management Agency instructed 707 municipalities designated as at risk from a Nankai Trough quake to review their disaster response measures and evacuation plans.
The meteorological agency’s first “megaquake advisory” sparked public unease and prompted local government offices, rail operators and other agencies to begin introducing precautionary measures, affecting holiday travelers during the summer “Obon” holiday week.
The popular seaside town of Shirahama in Wakayama prefecture said its four beaches, outdoor hot springs, parks and other facilities will be closed for the next week. An annual fireworks festival planned for Saturday was cancelled.
Aoshima, another popular beach resort in Miyazaki prefecture, which was hardest hit by Thursday’s quake, was also closed.
Rail companies serving the region said their trains will operate at slightly reduced speeds as a precautionary measure.
