A Global Perspective of Substorm Onset

Miles Bengtson, Embry-Riddle Aeronautical University, Daytona Beach, FL, United States, Katariina Nykyri, Embry-Riddle Aeronautical Univ, Daytona Beach, FL, United States and Vassilis Angelopoulos, UCLA, Department of Earth, Planetary, and Space Sciences and Institute of Geophysics and Planetary Physics, Los Angeles, CA, United States