@InProceedings{FerreiraSiAlMaDeSi:2023:ElFlVa,
               author = "Ferreira, Karen J{\'u}lia Coldebella and Silva, Ligia Alves da 
                         and Alves, Livia Ribeiro and Marchezi, Jos{\'e} Paulo and 
                         Deggeroni, Vinicius and Silva, Graziela Belmira Dias da",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)} and {University of New Hampshire Main 
                         Campus} and {Instituto Nacional de Pesquisas Espaciais (INPE)} and 
                         {Instituto Nacional de Pesquisas Espaciais (INPE)}",
                title = "Electron Flux Variability in the Outer Radiation Belt Under the 
                         Influence of Supercritical Interplanetary Quasi-parallel Shock 
                         Waves",
            booktitle = "Proceedings...",
                 year = "2023",
         organization = "AGU FAll Meeting",
            publisher = "AGU",
             abstract = "Supercritical interplanetary shock waves can impact the Earths 
                         magnetosphere, causing a variety of changes affecting since the 
                         bow shock to the radiation belts. A topic that remains under 
                         investigation in the literature is the influence of shock 
                         obliquity on the relativistic particle population in the inner 
                         magnetosphere. In this sense, we carried out case studies focused 
                         on quasi-parallel supercritical interplanetary shock waves, to 
                         analyze the relativistic electron flux (1.8 to 3.4 MeV) 
                         variability in the outer radiation belt due to mechanisms 
                         triggered under the influence of this class of shocks. The set of 
                         events happened during Van Allens Probes Era (2012-2019). During 
                         this period, 26 shocks are identified as supercritical using low 
                         beta and high fast mach number as criteria. Among them, 8 shocks 
                         are distinguished as quasi-parallel using the mixed modes method 
                         of shock normal calculation. Although all shocks exhibit the same 
                         type of obliquity and have similar conditions, we observed 
                         different responses in the outer radiation belt, such as 
                         time-varying responses of the relativistic electron flux and 
                         variability in different regions of the outer radiation belt, from 
                         5.0 to 3.5 Re. Through analysis of phase space density profiles, 
                         we identified different mechanisms that contributed to this 
                         variability, like radial diffusion driven by Ultra-Low Frequency 
                         (ULF) waves and local acceleration driven by Chorus waves. In 
                         three events we inferred variability induced by Chorus waves, 
                         three showed radial diffusion driven by ULF waves and in two of 
                         the events was not clear which mechanism affected the outer 
                         radiation belt relativistic population. These results contribute 
                         to the understanding the role of interplanetary shocks in the 
                         generation of physical mechanisms responsible for the outer 
                         radiation belt electron flux variability.",
  conference-location = "San Francisco, CA",
      conference-year = "11-15 Dec. 2023",
             language = "en",
        urlaccessdate = "20 maio 2024"
}