简介：Earthquakeengineeringresearchanddevelopmenthavereceivedmuchattentionsincethefirsthalfofthetwentiethcentury.Thisvaluableresearchpresentedahugestepforwardinunderstandingearthquakehazardmitigation,whichresultedinappreciablereductionoftheeffectsofpastearthquakes.Nevertheless,the2011Tohokuearthquakeandthesubsequenttsunamiresultedinmajordamage.Thispaperpresentsthetimelineofearthquakemitigationandrecovery,asseenbytheauthors.Possibleresearchdirectionswheretheauthorsthinkthatmanyopenquestionsstillremainareidentified.Theseareprimarilybasedontheimportantlessonslearnedfromthe2011Tohokuearthquake.

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