Location: 228 km ESE of Ishinomaki, Japan Period: 7 Dec 2012 08:54:02 - 9 Dec 2012 05:24:39 (1 day 20 hours 30 minutes) Volcanoes in 100km radius: None Earthquakes: 39 4 swarms found nearby. 2011 PS20110311.6(58.5km) 11 Mar 2 days 8 hours 50 earthquakes PS20110315.2(41.7km) 15 Mar 1 day 17 hours 6 earthquakes PS20110325.1(14.0km) 24 Mar 20 hours 6 earthquakes 2012 PS20121207.1(1.8km) 7 Dec 14 hours 10 earthquakes