@Article{JoshiRoSaMeStFoMu:2019:EFVaRe,
               author = "Joshi, Neelakshi and Rosa, Reinaldo Roberto and Savio, Siomel 
                         Odrizola and Meneses, Francisco C. de and Stephany, Stephan and 
                         Fornari, Gabriel and Muralikrishna, Polinaya",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)} and {China-Brazil Joint Laboratory for 
                         Space Weather} and {Instituto Nacional de Pesquisas Espaciais 
                         (INPE)} and {Instituto Nacional de Pesquisas Espaciais (INPE)} and 
                         {Instituto Nacional de Pesquisas Espaciais (INPE)}",
                title = "Spectral fluctuation analysis of ionospheric inhomogeneities over 
                         Brazilian territory Part II: E-F valley region plasma 
                         instabilities",
              journal = "Advances in Space Research",
                 year = "2019",
               volume = "64",
               number = "8",
                pages = "1592--1599",
                month = "Oct.",
             keywords = "Equatorial ionospheric plasma irregularities, E-F valley region 
                         irregularities, Detrending.",
             abstract = "The turbulent-like process associated with ionospheric 
                         instabilities, has been identified as the main nonlinear process 
                         that drives the irregularities observed in the different 
                         ionospheric regions. In this complementary study, as proposed in 
                         the first article of this two-paper series (Fornari et al., 2016), 
                         we performed the detrended fluctuation analysis of the equatorial 
                         E-F valley region electron density fluctuations measured from an 
                         in situ experiment performed over the Brazilian territory. The 
                         spectral consistency with the K41 turbulent universality class is 
                         analyzed for E-F valley region from the DFA spectra for four 
                         electron density time series. A complementary detrended 
                         fluctuation analysis for four time series of the F-layer electric 
                         field is also presented. Consistent with the results obtained for 
                         the F region, the analysis for the E-F valley region also shows a 
                         very high spectral variation ( 50%). Thus, the spectral analysis 
                         performed in both parts of the series suggest that a process such 
                         as the homogeneous turbulence K41 (b ¼ 5=3 2%) is inappropriate to 
                         describe both the fluctuations of electron density and the 
                         electric field associated with the main ionospheric 
                         instabilities.",
                  doi = "10.1016/j.asr.2019.07.015",
                  url = "http://dx.doi.org/10.1016/j.asr.2019.07.015",
                 issn = "0273-1177 and 1879-1948",
             language = "en",
           targetfile = "neelakshi_spectral.pdf",
        urlaccessdate = "03 jun. 2024"
}