*Claudia Martinez Calderon^1,2, Jacob Bortnik², Wen Li^3,2, Harlan Spence⁴, Emma Douma⁵, Craig Rodger⁵ (1.Department of Geophysics, Tohoku University, Sendai, Japan, 2.University of California Los Angeles, California, USA , 3.Boston University, Massachusetts, USA, 4.University of New Hampshire, New Hampshire, USA, 5.University of Otago, Dunedin, New Zealand)