作者: Y. I. Feldstein
DOI: 10.1111/J.2153-3490.1964.TB00164.X
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摘要: Data from visual observations at middle latitudes give information on the southern boundary of aurora appearance in zenith. Comparison zone location with linear current ionosphere and magnetic disturbance is made. Current orientation arc direction are considered. DOI: 10.1111/j.2153-3490.1964.tb00164.x