简介:Duringsolareclipse,thelunarshadowmovesthroughtheearth‘satmospherewithsupersonicspeed.ChimonasandHinesdeemedthattheshockwavesproducedbycoolingofatmospherewouldinducegravitywaves,andbothTIDsandatmosphericpressurechangescanbedetectedintheionosphereandonthegroundrespectively.AlthoughtheIGWsignalsfromsolareclipseareusuallyquiteweak,theycanstillbedetected.Thepressurechangesongroundleveloccurneartheregionofeclipse,butcanbedetectedevenfarbeyondthepathofeclipse.ThisarticleisthefirstonetoreportresultsofdetectingpressurewavescausedbysolareclipseinChina.Druingthe23rdSeptember1987annularsolareclipse,IGWshavebeendetectedandrecordedatinfrasoundobservatoriesin(?)r(?)mqi,Taiyuan,XuzhouandSuzhou,whicharesituatedwithinthepathofannulareclipse,aswellasinBeijingandGuiyang,whicharesituatedontheoppositesidesofthispath.Thesignalsaredetectedbymicrobarometersofcondensermicrophonetype.Afteran