Characteristics of ring current protons and oxygen ions during the 7 January 2015 and 17 March 2015 storms: Van Allen Probes/RBSPICE observations

Kunihiro Keika, The University of Tokyo, Department of Earth and Planetary Science, Tokyo, Japan, Kanako Seki, The University of Tokyo, Tokyo, Japan, Masahito Nose, Kyoto University, Graduate School of Science, Kyoto, Japan, Shinobu Machida, Nagoya University, Institute for Space-Earth Environmental Research, Nagoya, Japan, Yoshizumi Miyoshi, Nagoya University, ISEE, Nagoya, Japan, Louis J Lanzerotti, New Jersey Institute of Technology, Center for Solar-Terrestrial Research, Newark, NJ, United States, Donald G Mitchell, JHU/APL, Laurel, MD, United States, Matina Gkioulidou, Applied Physics Laboratory Johns Hopkins, Laurel, MD, United States, Andrew J Gerrard, New Jersey Institute of Technology, Edison, NJ, United States and Jerry Wayne Manweiler, Fundamental Technologies, LLC, Lawrence, KS, United States