Ying Zou^1,2, Brian Walsh¹, Vassilis Angelopoulos³ and Jiang Liu⁴, (1)Boston University, Boston, MA, United States, (2)University of Alabama in Huntsville, Huntsville, AL, United States, (3)University of California, Los Angeles, Department of Earth, Planetary, and Space Sciences and Institute of Geophysics and Planetary Physics, Los Angeles, CA, United States, (4)University of California Los Angeles, Department of Earth, Planetary, and Space Sciences and Institute of Geophysics and Planetary Physics, Los Angeles, CA, United States