Solar wind dynamic pressure pulse - driven magnetospheric vortices and waves

Monday, 15 December 2014: 8:45 AM
Quanqi Shi1, Anmin Tian1, Q.G. Zong2, Suiyan Fu2, Michael Hartinger3, Vassilis Angelopoulos4, Xiaochen Shen1, Huayu Zhao1, Zuyin Pu5, James M Weygand4, Joachim Raeder4, Xuzhi Zhou4, Hui Zhang6 and Malcolm Wray Dunlop7, (1)Shandong University at Weihai, Weihai, China, (2)Peking University, School of Earth and Space Sciences, Beijing, China, (3)University of Michigan, Ann Arbor, MI, United States, (4)University of California Los Angeles, Los Angeles, CA, United States, (5)Peking University, Beijing, China, (6)University of Alaska Fairbanks, Fairbanks, AK, United States, (7)Science and Technology Facilities Council, Didcot, United Kingdom
We study the interaction of the solar wind dynamic pressure increase/decrease with the magnetosphere using THEMIS satellites at both dayside and nightside in different geocentric distances. Vortices generated by the dynamic pressure compression/expansion passing along the magnetopause are also found and is compared with model predictions. ULF waves and vortices are excited in the dayside and nightside plasma sheet when dynamic pressure increase/decrease hit the magnetotail. The related ionospheric responses, such as TCVs, are also investigated. We compare Global MHD simulations with the observations.