| 其他摘要 | The Sun is the nearest star to our earth, as an ordinary member of the star family in the cosmos. Because of this, the investigation of the Sun is very important for studying the formation, the evolution,the structure and the outer atmosphere of the stars. More importantly, the third satellite of the Sun--the earth gives birth to human beings. Furthermore, the activities of the Sun and its periodic variety could threaten the living vironment of human beings. The investigation of the sunspot activity and solar eruptions is the keystone issue in solar physics. The relationship between the sunspot formation, its magnetic field evolution, and solar eruptions is not well derstood. The magnetic emergence, the magnetic cancellation, and the sunspot motion can affect the atmosphere of the active region and even produce flares, coronal mass ejections, filament eruptions, surges and so on. Especially, the large solar eruptions toward the earth can produce a big influence on the sun-earth space weather. The fierce activities, such as flares, coronal mass ejection (CME) and so on, could result in the perturbation of the magnetic field of the earth and its ionosphere, the interruption of the wireless transportation, the destroy of the power supply, the trouble in the space probes, the safety of the airman, the development of the space projection. Consequently, the investigation of the origin and the essence of the various activities is very important not only to science but also to human beings.The observation of the Sun is expanded from the single wavelength based on the ground station to the multi-wavelength composed ground and space stations. From the rocket to Yohkoh, Solar and Heliospheric Observatory, Transition Region and Coronal Explorer, Hinode, Solar Terrestrial Relations Observatory, Solar Dynamics Observatory satellites, these spacecrafts can observe the Sun by more wavelengths, more roundly, more detail and cause great achievements.This thesis is dedicated to the study of the evolution of active region and related solar eruptions, especially the exploration of the origin of solar activity by using a great deal of data obtained both by space and ground-based telescopes. It is structured as follow: In chapter one, on the base of surveying a number of references, we summarize the basic knowledge to sunspots, filaments, flares, and coronal mass ejections.In chapter two, we investigate the relationship between the flares, coronal mass ejections，magnetic emergence and magnetic cancellation by using the data from TRACE, SOHO, BBSO, GOES. In chapter three, we do research on the successive solar eruptions triggered by the collision between two small sunspots with opposite polarities and motional directions in active region NOAA 10484 by using the data of TRACE, SOHO/MDI, SOHO/LASCO, GOES, and RHESSI. In chapter four, we try to find the relationship between the sunspot rotation, the formation and the eruption of an active-region filament associated with a C7.3 flare and a halo CME in active region NOAA 08858 on Feb 10, 2000 by using the GOES12 soft X-ray flux, TRACE WL, 1600 \AA and 171 \AA images, SOHO/MDI 96-min magnetograms, and SOHO/LASCO C2 images. Finally, we describe the conclusions from the above studies and the future of our work. |
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