Event-Based Precipitation Patterns of Ring Current Electrons Observed by Riometers
Date
2024-09-18
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Abstract
A primary loss mechanism for high-energy particles in the Earth’s ring current is precipitation into the ionosphere. Precipitation has been historically difficult to quantify since it is primarily studied with in situ satellites. With in situ approaches, it is difficult to understand the spatial-temporal nature of the precipitation. In this thesis, ground-based measurements of high-energy electron precipitation are used to characterize and classify ring current electron precipitation events based on their spatial extent and temporal behaviour. As will be shown, there are multiple types of events visible in the ground-based data. When separated in this manner, these event types display different characteristics that demonstrate they are likely connected to different precipitation mechanisms. These results are important because they shed light on dominant wave-particle interactions in the ring current region, and pave the way for more detailed studies of wave-particle coupling and quantifying ring current losses.
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Keywords
Magnetosphere, Riometer
Citation
Keenan, C. (2024). Event-based precipitation patterns of ring current electrons observed by riometers (Master's thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca.