@InProceedings{SobralBABSTZN:1994:ThGrWa,
               author = "Sobral, Jos{\'e} Humberto Andrade and Borba, G. L. and Abdu, 
                         Mangalathayil Ali and Batista, Inez Staciarini and Sawant, H. S 
                         and Takahashi, Hisao and Zamlutti, Carlos Jos{\'e} and Nakamura, 
                         Y",
          affiliation = "{} and {} and {Instituto Nacional de Pesquisas Espaciais (INPE)}",
                title = "Thermospheric gravity wave signatures on the nocturnal atomic 
                         oxygen 630 nm airglow at low latitude over South America during 
                         quiet and disturbed geomagnetic conditions",
                 year = "1994",
         organization = "AGU Spring Meeting.",
             keywords = "AERONOMIA, Am{\'e}rica do Sul, ondas gravitacionais, 
                         aeroluminesc{\^e}ncia, perturba{\c{c}}{\~o}es, termosfera, 
                         gravity waves, airglow, perturbatios, thermosphere.",
             abstract = "We report photometric observations of seasonally dependent 
                         equatorward traveling perturbations of the atomic oxygen 630 nm 
                         airglow over Cachoeira Paulista (CP, Geogr. 22§41'S, 45§ 00' W, 
                         dip 28§S), which are apparently caused by thermospheric gravity 
                         waves. About 40 occurrences of those moving disturbances were 
                         observed from 299 nights of observations within the period of 10 
                         August 1977 to 4 July 1984. Their equatorward velocity, Wavelength 
                         and period were observed to be 150-300 ms-1 100-250 km and 15 
                         min-3 h, respectively. HF polarimeter records showed neither phase 
                         nor amplitude scintillations during the occurrence of those 
                         airglow perturbations which demonstrates that the perturbations 
                         are not associated to equatorial plasma depletions.",
  conference-location = "Baltimore, USA",
      conference-year = "23-27 May 1994",
                label = "3073",
           targetfile = "016.pdf",
        urlaccessdate = "20 maio 2024"
}