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Similar doublet (triplet?) also occurred in the Kuri Trench: Mw8.3 interplate EQ in 2006, and Mw 8.1 intraplate shallow normal-fault EQ in 2007 (3 months later), and aMw7.4 intraplate deep reverse-fault EQ in 2009. https://t.co/AJJAK459bS