@Article{MendesAdhDomEchTak:2022:CaSt,
               author = "Mendes, Odim and Adhikari, Binod and Domingues, Margarete Oliveira 
                         and Echer, Ezequiel and Takeshi, Rodrigo Seo",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Tribhuvan 
                         University} and {Instituto Nacional de Pesquisas Espaciais (INPE)} 
                         and {Instituto Nacional de Pesquisas Espaciais (INPE)} and 
                         {Instituto Nacional de Pesquisas Espaciais (INPE)}",
                title = "Interrelationships of Similar Magnetic Effects at Low and High 
                         Latitudes During High\‑Intensity Long\‑Duration 
                         Auroral Activity Events: Case Studies",
              journal = "Brazilian Journal of Physics",
                 year = "2022",
               volume = "52",
                pages = "e156",
             keywords = "HILDCAA · Geomagnetic storm · Magnetosphere · Space 
                         electrodynamics · Wavelet · Non-linear analysis.",
             abstract = "As known, geomagnetic storms and substorms are caused by 
                         intensifed solar wind-magnetosphere energy coupling processes. 
                         Recorded on the ground at high latitudes as geomagnetic 
                         disturbances, High-Intensity Long-Duration Continuous Auroral 
                         Electroject Activities (HILDCAAs) occur related to the same 
                         magnetospheric processes. Improving the magnetic efect 
                         understanding during HILDCAAs, this work investigates the 
                         characteristics of similar geomagnetic efects at the high and low 
                         latitudes from those kinds of events. A strategy is to deal with 
                         case studies; we selected HILDCAAs involving diferent 
                         interplanetary scenarios. One primary situation is HILDCAA not 
                         preceded by a geomagnetic storm; another situation is HILDCAA 
                         preceded by a Corotating Interacting Region (CIR) storm. Finally, 
                         there is HILDCAA preceded by an Interplanetary Coronal Mass 
                         Ejection (ICME) storm. A geomagnetically quiet case has also been 
                         examined as part of the cases to a complete comparison. The 
                         methodology involves three numerical approaches. A 
                         signal-normalised equivalent-energy variable for the auroral index 
                         AE and low-latitude asymmetric ring current geomagnetic index 
                         asy-H aid in highlighting similarities in the signal regimes. 
                         Together a dynamical time distortion analysis identifes the lags 
                         between the magnetic efect regimes. Wavelet multiscale analyses 
                         allow spectral characterisation in those efects during the 
                         coupling processes. Undoubtedly, the general criteria currently 
                         maintain applicable to categorise the HILDCAA events. 
                         Nevertheless, using well-defned quantitative approaches, the 
                         results point out non-linear peculiarities superposed on the 
                         general expected pattern. At the same time, the results show that 
                         phenomena recognised under a unique designation present rich 
                         details, difering among them by the infuence of a complicated 
                         coupling process linked to the alternate triggerings of the 
                         frontal magnetic reconnection and the viscous interaction on the 
                         magnetopause fanks.",
                  doi = "10.1007/s13538-022-01160-1",
                  url = "http://dx.doi.org/10.1007/s13538-022-01160-1",
                 issn = "0103-9733",
             language = "en",
           targetfile = "3475b8ae-e6da-478e-866a-a704a12bb647.pdf",
        urlaccessdate = "01 jun. 2024"
}