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(Reference retrieved automatically from Google Scholar through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

First observations of detached equatorial ionospheric plasma depletions using OI 630.0 nm and OI 777.4 nm emissions nightglow imaging

Full text
Author(s):
Sahai‚ Y. ; Abalde‚ JR ; Fagundes‚ PR ; Pillat‚ VG ; Bittencourt‚ JA
Total Authors: 5
Document type: Journal article
Source: Geophysical Research Letters; v. 33, n. 11, p. L11104, 2006.
Abstract

Near-simultaneous all-sky (180 degrees field of view) observations of the OI 630.0 nm and OI 777.4 nm nightglow emissions are being carried out on a routine basis at "Laboratorio Nacional de Astrofisica (LNA)'', Brazopolis (22.5 degrees S, 45.6 degrees W; dip latitude 17.5 degrees S; altitude 1860 m), Brazil, since September 2002. The all-sky imaging observations of the OI 630.0 nm and OI 777.4 nm emissions, which arise from the dissociative recombination of O-2(+) ions and radiative recombination of O+ ions ( mainly), respectively, are used to monitor the morphology and dynamics of the equatorial F-region at the respective emission heights. In this paper we present and discuss the first observations showing detached equatorial F-region plasma depletions or bubbles. Three cases are presented from observations during the years 2002 and 2003. We suggest a possible mechanism for their generation. (AU)

FAPESP's process: 05/00084-3 - Study of termosphere-ionosphere coupling at Brazilian sector
Grantee:José Ricardo Abalde Guede
Support Opportunities: Regular Research Grants