Characteristics of High Latitude Precursor Flows Ahead of Dipolarization Fronts

Jia-Zheng Li1, Xuzhi Zhou2, Vassilis Angelopoulos3, Jiang Liu2, Andrei Runov4, Dongxiao Pan1 and Qiugang Zong1, (1)Peking University, School of Earth and Space Sciences, Beijing, China, (2)University of California Los Angeles, Los Angeles, CA, United States, (3)University of California Los Angeles, Earth, Planetary, and Space Sciences, Los Angeles, CA, United States, (4)University of California Los Angeles, Department of Earth, Planetary and Space Sciences, Los Angeles, CA, United States