Tokyo, May 10: Two powerful earthquakes jolted Japan, first quake of 5.1 magnitude struck at 7:43 a.m.and another earthquake with an estimated magnitude of 6.3 hit off southwestern Japan on Friday, issuing no tsunami warning.
The quake struck at a shallow depth of 24km at the epicentre off the coast of Miyazaki, a city in the southwest of Kyushu island, the meteorological agency said.
The 8:48 a.m. quake measured a lower 5 on the Japanese seismic intensity scale to 7 in Miyazaki and Miyakonojo, Miyazaki Prefecture, and registered a 4 in many locations in Miyazaki, Kumamoto, Oita and Kagoshima prefectures, the Meteorological Agency said.
Japan sits on the Pacific Ring of Fire, an imaginary horseshoe-shaped zone that follows the rim of the Pacific Ocean, where many of the world’s earthquakes and volcanic eruptions occur. According to the U.S. Geological Survey, 81 percent of the world’s largest earthquakes happen in this belt.