@Article{CamachoBenyMendDomi:2023:PcPuSo,
               author = "Camacho, Edwin and Benyosef, Luiz and Mendes, Odim and Domingues, 
                         Margarete Oliveira",
          affiliation = "{Observat{\'o}rio Nacional (ON)} and {Observat{\'o}rio Nacional 
                         (ON)} and {Instituto Nacional de Pesquisas Espaciais (INPE)} and 
                         {Instituto Nacional de Pesquisas Espaciais (INPE)}",
                title = "Pc5 Pulsations in the South Atlantic Magnetic Anomaly",
              journal = "Brazilian Journal of Physics",
                 year = "2023",
               volume = "53",
               number = "1",
                pages = "e16",
                month = "Feb.",
             keywords = "South Atlantic Magnetic Anomaly, Pc5 pulsations, Wavelet 
                         transform, Coherence analysis, Space weather.",
             abstract = "This paper investigates the Pc5 magnetic pulsation characteristics 
                         infuenced by the South Atlantic Magnetic Anomaly (SAMA) in a 
                         moderate geomagnetic storm through records analysis of 
                         geomagnetically conjugate stations interlinking both hemispheres. 
                         This study uses the horizontal magnetic components measured in the 
                         same time interval in two typical longitudes: the America-SAMA 
                         region and Asia-Pacifc one, whose stations are under equivalent 
                         McIlwain L-parameter (L-shell). Our procedure uses those data 
                         recorded simultaneously in six conjugate-station pairs to identify 
                         and characterize the Pc5 pulsation. The methodology integrates 
                         spectral analyses based on fast Fourier transform and wavelet 
                         transform techniques, obtaining signal characterizations and 
                         coherence analysis to highlight the Pc5 pulsation dynamics. As a 
                         result, work found that Pc5 pulsations showed simultaneous and 
                         similar patterns in the occurrence intervals in the Asia-Pacifc 
                         region, reinforcing previous results from more restricted 
                         research. Concerning the America-SAMA region, the Pc5 pulsation 
                         amplitudes in the Northern hemisphere stations presented pulsation 
                         amplitudes following the Asia-Pacifc amplitude behavior. The 
                         pulsation amplitudes were higher in the SAMA region than those in 
                         the Northern hemisphere. Also, in the SAMA, concerning the 
                         conjugate stations, Pc5 pulsation presents the highest energy 
                         values in the typical Pc5 spectra during storm intervals with 
                         higher intensity. Between the conjugate pairs, pulsations showed 
                         moderate to low signal coherences and phase lags.",
                  doi = "10.1007/s13538-022-01229-x",
                  url = "http://dx.doi.org/10.1007/s13538-022-01229-x",
                 issn = "0103-9733",
             language = "en",
           targetfile = "s13538-022-01229-x.pdf",
        urlaccessdate = "16 jun. 2024"
}