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Mid-latitude magnetic bays and auroral absorption

Authors
Journal
Planetary and Space Science
0032-0633
Publisher
Elsevier
Publication Date
Volume
18
Issue
9
Identifiers
DOI: 10.1016/0032-0633(70)90140-6

Abstract

Abstract One hundred and thirty two simple isolated magnetic bay events at Fredericksburg, Virginia, were studied in terms of their H, Z and D components and found to fall into several distinct groups. Nighttime bays are sharp, highly correlated with 18 MHz auroral absorption at mid-latitude stations, and their H and Z components reverse sign near 2100 hr LT. Daytime bays are generally diffuse and only slightly correlated with mid-latitude riometer absorption. The high degree of correspondence between sharp bays and riometer absorption suggests that the same precipitating particles may be responsible for both.

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