简介：Byusinganoffshorelargevolumeair-gunseismicsource,onshoreseismicstations(includingmobilestationsandpermanentstations)andoceanbottomseismometers,adeepseismicexplorationexperimentwascarriedoutforthefirsttimeintheTaiwanStraits.Resultsshowthatseismicstationscanreceiveseismicsignalsfromtheair-gunarraysofthe"YANPINGⅡ"scientificinvestigationshipfromasfaras280kmaway.TensofthousandsofhighqualityseismicdataitemswereobtainedsuccessfullyanddifferenttypesofP-waveseismicphaseswereidentified.Aone-dimensionalcrustalstructuremodelofthesurveyprofileHX9showsthatthecrustalstructure,whichisreflectedbyPcandPmPreflectionwavesfromtwovelocitydiscontinuitiesandbasementrefractionwave(Pg)constitutesthebasiccharacteristicofthecrustalstructureinthisregion.ThedepthsofConraddiscontinuityandMohodiscontinuityarerespectively16.0km-17.5kmand28.0km-29.5km.