1) long term variations in the equatorial f-region using oi 630nm observations. 2) simultaneous gps and oi 6300 all-sky imaging observations during large scale equatorial ionospheric irregularities.

Grant number:	99/01872-2
Support Opportunities:	Research Grants - Meeting - Abroad
Start date:	July 18, 1999
End date:	July 30, 1999
Field of knowledge:	Physical Sciences and Mathematics - Geosciences - Geophysics

Principal Investigator:	Paulo Roberto Fagundes
Grantee:	Paulo Roberto Fagundes

Host Institution:	Instituto de Pesquisa e Desenvolvimento (IP&D). Universidade do Vale do Paraíba (UNIVAP). São José dos Campos , SP, Brazil

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