Horizontal drifts accompanying large vertical motions of the nocturnal F-region

Details Horizontal drifts accompanying large vertical motions of the nocturnal F-region Horizontal drifts accompanying large vertical motions of the nocturnal F-region

Publishing date

Oct 1971

URL

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1971p%26ss...19.1327w&link_type=abstract

Journals

Planetary and Space Science, Volume 19, Issue 10, p. 1327-1327.

Science

Other

Additional info 2

1

Type

Scientific paper

Abstract

A large scale vertical convection of the mid dip-latitude post-midnight F-region of the ionosphere is described; it occurs on about 60 per cent of the local winter nights in each hemisphere in years of solar minimum activity, and less frequently at other times. During the event the F-region moves downward into the region of rapid recombination and most of its ionization may be lost; a portion of it sometimes enters the E-region to form a pre-sunrise E- or sporadic E-layer. Spaced antenna measurements of F-region horizontal motions during these events are interpreted to support the view that the downward motion is driven by neutral air winds in the F-region, rather than by electrostatic fields.

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