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@MastersThesis{FariñasPérez:2015:StTrMa,
               author = "Fariñas P{\'e}rez, Germ{\'a}n",
                title = "Study of transient magnetic reconnection and its relation with the 
                         variability of the polar cap potential",
               school = "Instituto Nacional de Pesquisas Espaciais (INPE)",
                 year = "2015",
              address = "S{\~a}o Jos{\'e} dos Campos",
                month = "2015-03-05",
             keywords = "FTE, transient magnetic reconnection, polar cap potential, solar 
                         wind-magnetosphere interaction, reconex{\~a}o magn{\'e}tica 
                         transiente, potencial da calota polar, intera{\c{c}}{\~a}o vento 
                         solar-magnetosfera.",
             abstract = "The polar cap potential is an important parameter available to 
                         describe the level of magnetospheric activity. It is a measure of 
                         the intensity of the magnetospheric convection. The convection 
                         process in the magnetosphere is not steady even under constant 
                         solar wind conditions. Bursty and unsteady processes in the 
                         magnetopause and in the magnetotail disturb the steady state of 
                         the magnetosphere and produce variability of the polar cap 
                         potential. In this work a three dimensional global 
                         magnetohydrodynamic simulation was analyzed in order to study 
                         transient magnetic reconnection at the dayside magnetopause and in 
                         the geomagnetic tai1. The Block-Adaptive- 
                         Tree-Solarwind-Roe-Upwind-Scheme (BATS-R-US) code was used. 
                         Transient reconnection events associated with flux transfer events 
                         at the dayside magnetopause and instabilities at the magnetotail 
                         neutral sheet current were identified. Finally the influence of 
                         these events on the variations of the polar cap potential has been 
                         analyzed. RESUMO: O potencial da calota polar {\'e} um 
                         par{\^a}metro importante dispon{\'{\i}}vel para descrever o 
                         n{\'{\i}}vel de atividade da magnetosfera. {\'E} uma medida da 
                         intensidade da convec{\c{c}}{\~a}o magnetosf{\'e}rica. O 
                         processo de convec{\c{c}}{\~a}o na magnetosfera n{\~a}o {\'e} 
                         estacion{\'a}rio, mesmo sob condi{\c{c}}{\~o}es constantes do 
                         vento solar. Processos inst{\'a}veis e transientes na 
                         magnetopausa e na cauda magn{\'e}tica perturbam o estado de 
                         equil{\'{\i}}brio da magnetosfera e produzem variabilidade do 
                         potencial da calota polar. Neste trabalho, foi analisada uma 
                         simula{\c{c}}{\~a}o magnetohidrodin{\^a}mica global 
                         tridimensional, a fim de estudar a reconex{\~a}o magn{\'e}tica 
                         transiente na magnetopausa diurna e na cauda geomagn{\'e}tica. O 
                         c{\'o}digo Block-Adaptive- Tree-Solarwind-Roe-Upwind-Scheme 
                         (BATS-R-US) foi usado. Os processos de reconex{\~a}o transiente 
                         associados a eventos de transfer{\^e}ncia de fluxo na 
                         maguetopausa diurna e instabilidades na l{\^a}mina de corrente da 
                         magnetocauda foram identificados. Finalmente foi analisada a 
                         influ{\^e}ncia desses eventos sobre as varia{\c{c}}{\~o}es do 
                         potencial da calota polar.",
            committee = "Alves, Maria Virg{\'{\i}}nia (presidente) and Alarcon, Walter 
                         Demetrio Gonzalez (orientador) and Cardoso, Fl{\'a}via Reis 
                         (orientadora) and Costa, Cristiane Loesch de Souza and 
                         Gonz{\'a}lez, Arian Ojeda",
           copyholder = "SID/SCD",
         englishtitle = "Estudo da reconex{\~a}o magn{\'e}tica transiente e sua 
                         rela{\c{c}}{\~a}o com a variabilidade do potencial da calota 
                         polar",
             language = "en",
                pages = "107",
                  ibi = "8JMKD3MGP3W34P/3HTNDEL",
                  url = "http://urlib.net/rep/8JMKD3MGP3W34P/3HTNDEL",
           targetfile = "publicacao.pdf",
        urlaccessdate = "29 nov. 2020"
}


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