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Southern extent of Aurora Borealis in North America

 

作者: C. W. Gartlein,   R. K. Moore,  

 

期刊: Journal of Geophysical Research  (WILEY Available online 1951)
卷期: Volume 56, issue 1  

页码: 85-96

 

ISSN:0148-0227

 

年代: 1951

 

DOI:10.1029/JZ056i001p00085

 

数据来源: WILEY

 

摘要:

Results are presented for the first 11 years of a study of the frequency of overhead auroras in North America as a function of latitude in a region south of the auroral zone. The data have been averaged in various ways so that monthly and annual variations are demonstrated. It appears that there is a relatively constant level of auroral activity throughout the year in the region 58° to 60° geomagnetic latitude, while auroras appearing overhead south of these latitudes are more frequent during equinoctial periods. Auroras have been seen as far south as 52° during this period every month of the year. Correlation of auroral frequency with sunspot number is not high on a month‐by‐month or three‐month running‐

 

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