Location: 82 km E of Miyako, Japan Period: 18 Mar 2011 18:32:49 - 20 Mar 2011 12:03:46 (1 day 17 hours 30 minutes) Volcanoes in 100km radius: None Earthquakes: 8 4 swarms found nearby. 2011 PS20110311.7(95.1km) 11 Mar 3 days 15 hours 38 earthquakes PS20110311.8(83.3km) 11 Mar 9 hours 5 earthquakes PS20110323.1(70.3km) 22 Mar 23 hours 6 earthquakes PS20110413.1(89.7km) 13 Apr 8 hours 6 earthquakes