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Monitoring Energetic Electron Precipitation Using a Ground-based Radio Array

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MSc Thesis (38.33Mb)
Advisor
Cully, Christopher
Author
Davis, Eric
Committee Member
Jackel, Brian
Brown, Jo-Anne
Sesay, Abu
Other
space
physics
very low frequency
electron
precipitation
van allen
radiation belts
signal processing
minimum shift keying
geomagnetic
space weather
Subject
Atmospheric Science
Electricity and Magnetism
Fluid and Plasma
Physics--Radiation
Type
Thesis
Metadata
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Abstract
The Van Allen radiation belts are regions of trapped energetic particles in near-Earth space. Radiation belt loss mechanisms into the atmosphere are still not well quantified, a process known as electron precipitation. This thesis describes a method for monitoring energetic electron precipitation using the ground-based Array for Broadband Observations of Very low frequency/extremely low frequency Emissions (ABOVE). A signal processing algorithm is described to calculate the relative time delay and power of a signal travelling hundreds to thousands of kilometers from transmitter to receiver. Instrument response is shown to be consistent with the literature for energetic electron precipitation. Instrumental uncertainty is evaluated, revealing a random instrument uncertainty substantially less than electron precipitation signatures. The method is applied to two case studies. The flux, energy, and location of energetic electron precipitation are inferred in both studies, and the use of ABOVE for monitoring energetic electron precipitation is validated.
Corporate
University of Calgary
Faculty
Graduate Studies
Doi
http://dx.doi.org/10.11575/PRISM/26998
Uri
http://hdl.handle.net/11023/3168
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