A multipoint determination of the propagation velocity of a sudden commencement across the polar ionosphere

We use magnetic field and riometer data, from ground observatories in both the Arctic and Antarctic regions to characterize the high-latitude propagation of a sudden storm commencement (SC) that occurred at; 0901 UT February '21, 1994. (1) high time resolution magnetic field data. from both hem...

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Bibliographic Details
Main Authors: Engebretson, M.J., Murr, D.L., Hughes, W.J., Luhr, H., Moretto, T., Posch, J.L., Weatherwax, A.T., Rosenberg, T.J., Maclennan, C.G., Lanzerotti, L.J., Marcucci, F., Dennis, S., Burns, G., Bitterly, J., Bitterly, M.
Format: Article in Journal/Newspaper
Language:English
Published: 1999
Subjects:
Antarctic
Arctic
Antarc*
Online Access:https://orbit.dtu.dk/en/publications/234cfe94-31e4-4e23-b6bb-db3f87ee6af3
Description
Summary:We use magnetic field and riometer data, from ground observatories in both the Arctic and Antarctic regions to characterize the high-latitude propagation of a sudden storm commencement (SC) that occurred at; 0901 UT February '21, 1994. (1) high time resolution magnetic field data. from both hemispheres indicate extremely rapid propagation of the initial part of the SC signal at high latitudes. An initial inflection point; was observed in the data front dawn sector stations in both polar caps nearly simultaneously (Delta t

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