*Kevin Genestreti^1,2、Stephen A Fuselier^2,1、Jerry Goldstein^2,1、Tsugunobu Nagai³、Jonathan P Eastwood⁴ (1.Department of Physics and Astronomy, University of Texas San Antonio、2.Space Science and Engineering Division, Southwest Research Institute、3.Department of Earth and Planetary Sciences, Tokyo Institute of Technology、4.The Blackett Laboratory, Imperial College London)