High Latitude EMIC Waves in the Earth's Inner Magnetosphere: A Global View of the Wave-Induced Source for Heavy Ion Conics and Warm Plasma Cloak

This study is a follow-up to the Gamayunov et al. (2024, https://doi.org/10.1029/2023ja032399) paper, where they show that dissipation of the (Formula presented.) -band and (Formula presented.) -band electromagnetic ion cyclotron (EMIC) wave energy in the postnoon magnetic local time (MLT) off equatorial region of the Earth's inner magnetosphere substantially contributes to the formation of heavy ion conics and warm plasma cloak. Here, we extend the scope of their paper by providing a global view of the EMIC wave-induced source for heavy ion conics and warm plasma cloak in the inner magnetosphere. We produce a database of the (Formula presented.) -band and (Formula presented.) -band EMIC wave events using observations by the two Van Allen Probes in the magnetic latitude region (Formula presented.) from the beginning through the end of mission and then analyze it. The major results of our analysis are as follows. (a) About two thirds of EMIC wave events are observed in the region (Formula presented.) hr, (Formula presented.), and (Formula presented.), inside the plasmaspheric plume, and during coronal mass ejection and high-speed stream driving conditions in the upstream solar wind. (b) Distributions of EMIC wave events presented give us a geomagnetic context when and a spatial region where an EMIC wave energy dissipation is likely to be responsible for the formation of heavy ion conics and warm plasma cloak. At least two thirds of EMIC wave events in our database should contribute to the formation of heavy ion conics and warm plasma cloak in the high L shell region of the noon-dusk MLT sector.