Two-dimensional high-resolution imaging of the equatorial plasma fountain

Sridharan, R. ; Sekara, R. ; Gurubaran, S. (1993) Two-dimensional high-resolution imaging of the equatorial plasma fountain Journal of Atmospheric and Terrestrial Physics, 55 (13). pp. 1661-1663. ISSN 0021-9169

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Official URL: http://www.sciencedirect.com/science/article/pii/0...

Related URL: http://dx.doi.org/10.1016/0021-9169(93)90170-4

Abstract

The first visual representation of the reverse equatorial plasma fountain during night-time has been made using images obtained by an All Sky Imaging Fabry-Perot Spectrometer observing the OI 630.0 nm airglow emission line from the thermosphere; the intensity of this line emission is directly related to the F-region plasma densities during night-time. From the identifiable features when the enhanced airglow emitting region moves overhead and when it completely leaves the field-of-view, the equatorwards velocity of the EIA has been estimated to be ∼150 km/h at the latitude of the measurements (Mt Abu, 20° 20' dip latitude, India). Lower limits for the latitudinal and longitudinal extents of the EIA crest have each been inferred to be 6°.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
ID Code:54159
Deposited On:11 Aug 2011 11:26
Last Modified:11 Aug 2011 11:26

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