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-1 satellite，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∶30 UT and ended at 17∶45 UT.The occurrence time range of ionospheric scintillations observed by scintillation monitor was larger than that of SSF.From 16∶33 UT to 16∶34 UT，ROCSAT-1 detected 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.