Driving of Dramatic Geomagnetic Activity by Enhancement of Meso-Scale Polar-cap Flows

Larry R Lyons1, Bea Gallardo-Lacourt1, Ying Zou2, Yukitoshi Nishimura3, Phillip Charles Anderson4, Vassilis Angelopoulos5, J. Michael Ruohoniemi6, Elizabeth J Mitchell7, Larry J Paxton8 and Nozomu Nishitani9, (1)University of California Los Angeles, Los Angeles, CA, United States, (2)UCLA, Los Angeles, CA, United States, (3)University of California Los Angeles, Department of Atmospheric and Ocean Science, Los Angeles, CA, United States, (4)University of Texas at Dallas, W. B. Hanson Center for Space Science, Richardson, TX, United States, (5)UCLA, Department of Earth, Planetary, and Space Sciences and Institute of Geophysics and Planetary Physics, Los Angeles, CA, United States, (6)Virginia Polytechnic Institute and State University, Blacksburg, VA, United States, (7)Applied Physics Laboratory Johns Hopkins, SRG, Laurel, MD, United States, (8)Applied Physics Laboratory Johns Hopkins, Laurel, MD, United States, (9)Institute for Space-Earth Environmental Research, Nagoya University, Nagoya, Japan