An earthquake with a magnitude of 7.1 hit southwestern Japan on Thursday and tsunami advisories were issued for the Pacific coast extending to the western part of the country, sparking concerns that a megaquake may occur in the near future.The Japan Meteorological Agency issued an urgent advisory on the trench-type megaquake for the first time, warning the possibility of the quake happening along the Nankai Trough, stretching from off southwestern to central Japan, is relatively higher than usual.In consideration of the advisory, Central Japan Railway Co. said it will run the Tokaido Shinka…READ FULL ARTICLE