摘要
Aftershocksofthe2011Tohoku-Okigreatearthquakehaveawiderangeoffocaldepthsandfaultplanemechanisms.Weconstrainthefocaldepthsandfocalmechanismsof69aftershockswithMw[5.4bymodelingthewaveformsofteleseismicPanditstrailingnear-surfacereflectionspPandsP.Wefindthatthe‘‘thrustevents’’arewithin10kmfromtheplateinterface.Thedipanglesofthesethrusteventsincreasewithdepthfrom*5°to*25°.The‘‘non-thrustevents’’varyfrom60kmaboveto40kmbelowtheplateinterface.Normalandstrike-slipeventswithintheoverridingplatepointtoredistributionofstressfollowingtheprimarygreatearthquake;however,duetothespatiallyvariablestresschangeintheTohoku-Okiearthquake,anunderstandingofhowthemainshockaffectedthestressesthatledtotheaftershocksrequiresaccurateknowledgeoftheaftershocklocation.
出版日期
2014年01月11日（中国期刊网平台首次上网日期，不代表论文的发表时间）
