Research Progresses on Small Flux Ropes

Jia Huang1,2, Yong Liu1, Jun Peng1,2 and Berndt Klecker3, (1)NSSC National Space Science Center, CAS, Beijing, China, (2)UCAS University of Chinese Academy of Sciences, College of Earth Sciences, Beijing, China, (3)Max Planck Institut for Extraterrestrial Physics, Garching, Germany