Departmental Bulletin Paper 2015年に発生した阿寒湖付近の地震(MJMA 5.0)

一柳, 昌義  ,  高橋, 浩晃  ,  山口, 照寛  ,  岡田, 和見  ,  大園, 真子  ,  岡崎, 紀俊

79pp.1 - 8 , 2016-03-19 , 北海道大学大学院理学研究院
An M5.0 shallow earthquake occurred on 4 June 2015 in the eastern Hokkaido. In order to evaluate aftershock activity, three temporal seismic stations had been operated in the focal region from 4 June 2015 to 22 August 2015. Hypocenters calculated with a local seismic velocity structure indicated clear southwestern-dipping distribution. This alignment on a plane was consistent with one of nodal plane of mainshock focal mechanism. This earthquake and historical records suggested higher seismic activity in this region.

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