Ionospheric plasma bubbles simultaneously observed by multi-instruments in Hainan region

Based on data observed by ionosonde and scintillation monitor at Hainan station,as well as ROCSAT-1satellite,the ionospheric plasma bubbles which simultaneously observed by the three instruments in Hainan region on April 23,2004,have been analyzed.The Strong range Spread F(SSF)observed by ionosonde started at 14∶30UT and ended at 17∶45UT.The occurrence time range of ionospheric scintillations observed by scintillation monitor was larger than that of SSF.From 16∶33UT to 16∶34UT,ROCSAT-1detected two bubbles above Hainan region.The SSF and scintillations are considered to be caused by the bubbles.Thus we presented the significant evidence of bubbles simultaneously observed by ionosonde,scintillation monitor,and satellite.