The Influence of Neutral Winds in the Formation and Distribution of the Ionospheric Evening Anomaly,
Abstract
By plotting world contour maps of the index which describes the magnitude of the evening anomaly (the higher than expected evening values of the critical ionospheric frequency in the summer hemisphere), we have obtained patterns which show that the anomaly is more pronounced in regions of westward declination in the northern hemisphere and eastward declination in the southern hemisphere, as well as in regions where there is a poleward divergence of the magnetic meridians. By studying neutral wind patterns computed by other authors, we have reached the conclusion that the neutral winds, by dragging the ionospheric plasma which is essentially constrained to move along the lines of force of the earth's magnetic field, play a very important role in determining the geographic variations in the intensity of the evening anomaly. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1970
- Accession Number
- AD0708496
Entities
People
- Henry W. Mullaney
- Michaēl D. Papagiannēs
Organizations
- Boston University