High-resolution Observations Of Solar Filament Eruptions And Their Associated Activities

Solar filament eruptions are one of the most fierce explosion phenomena in the solar atmosphere.Successful filament eruptions produce flares and coronal mass ejections(CMEs).The released solar energetic particles and magnetized plasma could cause strong perturbations in the space environment of the Earth.Therefore,studying the triggering mechanism of solar filament eruptions and the related atmospheric phenomena will help us to understand the dynamics and kinematics of the eruptions,and it is also beneficial for forecasting the catastrophic weather in solar-terrestria space.In this paper,we use the multi-wavelength high-resolution data from NVST,GST and SDO to investigate the filament eruptions and the associated activities.We focus on the triggering mechanisms of the filament eruptions and their precursors.Firstly,we present the formation and eruption of a sigmoidal filament driven by rotating network magnetic fields(RNFs)(Chapter 3).Secondly,we present an investigation of partial filament eruption observed by GST.For the first time,we observe the vertical splitting process during the partial eruption with high resolution narrow-band images at 10830 A(Chapter 4).Thirdly,we present a multi-wavelength analysis of mass-draining and oscillations in a large quiescent filament prior to its successful eruption on 2015 April 28.We show the gradual destabilization of the filament in detail(Chapter 5).At last,we report the transverse oscillation of a large-scale coronal loop induced by an active region mini-filament eruption.We confirm the reliability of the coronal seismology and the flux rope insertion method in diagnosing coronal magnetic field(Chapter 6).The four studies are based on multi-wavelength data with high spatial and temporal resolution.we have made quantitative analysis and qualitative description of the dynamical and kinematic processes in these filament eruptions.In particular,we have discussed various aspects of the initial triggering process of filament eruptions,including the driving effects of RNFs,the external magnetic reconnection,the eruptions near the filaments,the mass draining and filament oscillations.The study in this thesis provides important clues for the comprehensive understanding of the solar filament eruptions.