All Physics Faculty Publications

Document Type

Article

Journal/Book Title/Conference

Annales Geophysicae

Volume

27

Issue

6

Publisher

European Geosciences Union

Publication Date

6-2009

First Page

2371

Last Page

2381

DOI

10.5194/angeo-27-2371-2009

Abstract

From September to November 2005, the NASA Living with a Star program supported the Spread-F Experiment campaign (SpreadFEx) in Brazil to study the effects of convectively generated gravity waves on the ionosphere and their role in seeding Rayleigh-Taylor instabilities, and associated equatorial plasma bubbles. Several US and Brazilian institutes deployed a broad range of instruments (all-sky imagers, digisondes, photometers, meteor/VHF radars, GPS receivers) covering a large area of Brazil. The campaign was divided in two observational phases centered on the September and October new moon periods. During these periods, an Utah State University (USU) all-sky CCD imager operated at S˜ao Jo˜ao d’Alianc¸a (14.8 S, 47.6 W), near Brasilia, and a Brazilian all-sky CCD imager located at Cariri (7.4 S, 36 W), observed simultaneously the evolution of the ionospheric bubbles in the OI (630 nm) emission and the mesospheric gravity wave field. The two sites had approximately the same magnetic latitude (9–10 S) but were separated in longitude by 1500 km.

Comments

Published by European Geosciences Union in Annales Geophysicae.

http://www.ann-geophys.net/27/2371/2009/angeo-27-2371-2009.html

Publisher PDF is available for download through the link above.

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