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@Article{SilvaSASJCMAMVWJLGDSPABFBKKG:2019:CoULWa,
               author = "Silva, Ligia A. da and Sibeck, David and Alves, Livia Ribeiro and 
                         Souza, Vitor Moura Cardoso e Silva and Jauer, P. R. and 
                         Claudepierre, S. G. and Marchezi, Jos{\'e} Paulo and Agapitov, 
                         Oleksiy and Medeiros, Cl{\'a}udia and Vieira, Luis Eduardo 
                         Antunes and Wang, Chi and Jiankui, Shi and Liu, Z. and Gonzalez 
                         Alarcon, Walter Dem{\'e}trio and Dal Lago, Alisson and Silva, 
                         Marlos Rockenbach da and P{\'a}dua, Marcelo Banik de and Alves, 
                         Maria Virginia and Barbosa, Marcos Vinicius Grala and Fok, 
                         Mei-Ching and Baker, Daniel and Kletzing, Craig and Kanekal, 
                         Shrikanth G. and Georgiou, Marina",
          affiliation = "{Chinese Academy of Sciences} and {NASA Goddard Space Flight 
                         Center} and {Instituto Nacional de Pesquisas Espaciais (INPE)} and 
                         {Instituto Nacional de Pesquisas Espaciais (INPE)} and {Chinese 
                         Academy of Sciences} and {The Aerospace Corporation} and 
                         {Instituto Nacional de Pesquisas Espaciais (INPE)} and {University 
                         of California} and {Instituto Nacional de Pesquisas Espaciais 
                         (INPE)} and {Instituto Nacional de Pesquisas Espaciais (INPE)} and 
                         {Chinese Academy of Sciences} and {Chinese Academy of Sciences} 
                         and {Chinese Academy of Sciences} and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)} and {Instituto Nacional de Pesquisas 
                         Espaciais (INPE)} and {Instituto Nacional de Pesquisas Espaciais 
                         (INPE)} and {Instituto Nacional de Pesquisas Espaciais (INPE)} and 
                         {Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {NASA Goddard Space 
                         Flight Center} and {} and {NASA Goddard Space Flight Center}",
                title = "Contribution of ULF Wave Activity to the Global Recovery of the 
                         Outer Radiation Belt During the Passage of a High-Speed Solar Wind 
                         Stream Observed in September 2014",
              journal = "Journal of Geophysical Research Space Physics",
                 year = "2019",
               volume = "124",
               number = "3",
                pages = "1660--1678",
                month = "Mar.",
             abstract = "Energy coupling between the solar wind and the Earth's 
                         magnetosphere can affect the electron population in the outer 
                         radiation belt. However, the precise role of different internal 
                         and external mechanisms that leads to changes of the relativistic 
                         electron population is not entirely known. This paper describes 
                         how ultralow frequency (ULF) wave activity during the passage of 
                         Alfv{\'e}nic solar wind streams contributes to the global 
                         recovery of the relativistic electron population in the outer 
                         radiation belt. To investigate the contribution of the ULF waves, 
                         we searched the Van Allen Probes data for a period in which we can 
                         clearly distinguish the enhancement of electron fluxes from the 
                         background. We found that the global recovery that started on 22 
                         September 2014, which coincides with the corotating interaction 
                         region preceding a high-speed stream and the occurrence of 
                         persistent substorm activity, provides an excellent scenario to 
                         explore the contribution of ULF waves. To support our analyses, we 
                         employed ground- and space-based observational data and global 
                         magnetohydrodynamic simulations and calculated the ULF wave radial 
                         diffusion coefficients employing an empirical model. Observations 
                         show a gradual increase of electron fluxes in the outer radiation 
                         belt and a concomitant enhancement of ULF activity that spreads 
                         from higher to lower L-shells. Magnetohydrodynamic simulation 
                         results agree with observed ULF wave activity in the magnetotail, 
                         which leads to both fast and Alfv{\'e}n modes in the 
                         magnetospheric nightside sector. The observations agree with the 
                         empirical model and are confirmed by phase space density 
                         calculations for this global recovery period.",
                  doi = "10.1029/2018JA026184",
                  url = "http://dx.doi.org/10.1029/2018JA026184",
                 issn = "2169-9380",
             language = "en",
           targetfile = "
                         
                         Silva_et_al-2019-Journal_of_Geophysical_Research__Space_Physics.pdf",
        urlaccessdate = "25 nov. 2020"
}


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