TY JOUR TI Mega-earthquake on 11 March 2011 in Japan and aftershock process dynamics' development KW Large earthquake KW recurrence of the large earthquakes KW seismic gap KW mega-earthquake KW aftershock sequence KW strongest aftershock KW field of aftershocks' epicenters KW probable scenario JO Russian Journal of Earth Sciences AU , .. PY 2011 IS 12 PB Геофизический центр Российской Академии Наук