A Comparative Study of 2017 July and 2012 July Complex Eruptions: Are Solar Superstorms "Perfect Storms" in Nature?

Ying D. Liu1, Xiaowei Zhao1, Huidong Hu1, Angelos Vourlidas2 and Bei Zhu1, (1)NSSC National Space Science Center, CAS, Beijing, China, (2)Johns Hopkins University Applied Physics Laboratory, Laurel, MD, United States