Abstract
The spatial extent and temporal behaviour of quasi-periodic (QP) intensity modulations of 0.5-2kHz ELF-VLF emissions were investigated in a comparative study of data collected at three Antarctic stations. Frequently, the waveforms of the ELF-VLF signals received at each site were identical. The emissions are identified with the periodic modulation of the electron pitch-angle distribution by the propagation of ULF compressional fast-mode waves through a region. In addition to generation close to the equatorial plane, we propose an additional high-latitude source of QP emissions. These emissions are associated with regions of minimum-B produced by the dayside compression of the magnetosphere close to the magnetopause.
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Morrison, K. et al. (1994). The ULF Modulation of ELF-VLF Emissions Close to the Magnetospheric Boundary. In: Holtet, J.A., Egeland, A. (eds) Physical Signatures of Magnetospheric Boundary Layer Processes. NATO ASI Series, vol 425. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-1052-5_26
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DOI: https://doi.org/10.1007/978-94-011-1052-5_26
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