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
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.
Recommended Citation
Pautet, P.-D., Taylor, M.J., Chapagain, N.P., Takahashi, H., Medeiros, A.F., São Sabbas, F.T., and Fritts, D.C.: Simultaneous Observations of Equatorial F-Region Plasma Depletions over Brazil During the Spread F Experiment (SpreadFEx), Ann. Geophys., 27, 1–11, 2009.
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.