摘要： AbstractTeleseismic body wave analysis revealed that the 7 December 2012 off‐Sanriku earthquake (MW 7.3) at the outer rise of Japan Trench consisted of two successive subevents. The first subevent with reverse‐fault mechanism (Event 1, MW 7.1) at 56 km depth was followed by, approximately 20 s later, the second subevent with normal‐fault mechanism (Event 2, MW 7.2) at 6 km depth. Finite‐fault slip models show that the slip of Event 1 was concentrated around the initial rupture point with the maximum of 2.7 m and that Event 2 had two asperities with the maximum of 4.5 m at both sides of the initial rupture point. The static Coulomb Failure Function analyses suggested that Event 1 triggered Event 2 and that both subevents were promoted by the 2011 Tohoku earthquake (MW 9.1). 其他題名： Geophys. Res. Lett 出版者： Washington, DC: Blackwell Publishing Ltd 出版日期： 2013-08-28 出處： Geophysical Research Letters, 2013-08, Vol.40 (16), p.4214-4219 資源來源： Wiley Online Library - AutoHoldings Journals 版權： 2013. American Geophysical Union. All Rights Reserved. 版權： 2014 INIST-CNRS 識別號： ISSN: 0094-8276 識別號： ISSN: 1944-8007 識別號： EISSN: 1944-8007 識別號： DOI: 10.1002/grl.50808 識別號： CODEN: GPRLAJ
