NOAA9077 was characterized by multi-layer arcades with different orientations. In side these arcades a magnetic rope was reconstructed, for the first time, from vector magnetograph observations, which was co-spatial with Ha filament and a bright lane in 1600A by TRACE.The X5.7/3B flare may be triggered due to the rope instability.The the drifting pulsation structure associated with the plasmoid ejection may manesfect the initiation phase of the CME |
