@Article{DalLagoSSSLSGGBVEG:2006:VeInGe,
               author = "Dal Lago, Alisson and Santos, Jean and Silva, Marlos Rockenbach da 
                         and Schuch, Nelson Jorge and Lucas, Aline de and Schwenn, Ranier 
                         and Gonzalez, Alicia Luisa Clua and Gonzalez, Walter Dem{\'e}trio 
                         and Balmaceda, Laura A. and Vieira, Luiz Eduardo Antunes and 
                         Echer, Ezequiel and Guarnieri, Fernando Luis",
          affiliation = "Instituto Nacional de Pesquisas Espaciais, Divis{\~a}o de 
                         Geof{\'{\i}}sica Espacial (INPE.DGE) and {Max-Planck-Institut 
                         f{\"u}r Sonnensystemforschung} and Instituto Nacional de 
                         Pesquisas Espaciais, Divis{\~a}o de Geof{\'{\i}}sica Espacial 
                         (INPE.DGE) and Instituto Nacional de Pesquisas Espaciais, Centro 
                         Regional Sul de Pesquisas Espaciais (INPE) and Instituto Nacional 
                         de Pesquisas Espaciais, Divis{\~a}o de Geof{\'{\i}}sica 
                         Espacial (INPE.DGE) and {Max-Planck-Institut f{\"u}r 
                         Sonnensystemforschung} and Instituto Nacional de Pesquisas 
                         Espaciais, Divis{\~a}o de Geof{\'{\i}}sica Espacial (INPE.DGE) 
                         and Instituto Nacional de Pesquisas Espaciais, Divis{\~a}o de 
                         Geof{\'{\i}}sica Espacial (INPE.DGE) and {Max-Planck-Institut 
                         f{\"u}r Sonnensystemforschung} and Instituto Nacional de 
                         Pesquisas Espaciais, Divis{\~a}o de Geof{\'{\i}}sica Espacial 
                         (INPE.DGE) and Instituto Nacional de Pesquisas Espaciais, 
                         Divis{\~a}o de Geof{\'{\i}}sica Espacial (INPE.DGE) and 
                         Instituto Nacional de Pesquisas Espaciais, Divis{\~a}o de 
                         Geof{\'{\i}}sica Espacial (INPE.DGE)",
                title = "The 17-22 October (1999) solar-interplanetary-geomagnetic event: 
                         Very intense geomagnetic storm associated with a pressure balance 
                         between interplanetary coronal mass ejection and a high-speed 
                         stream",
              journal = "Journal of Geophysical Research",
                 year = "2006",
               volume = "111",
               number = "A7",
                pages = "A07S14 (5pp)",
                month = "July",
             keywords = "coronal mass ejections, geomagnetic storms, speed streams, 
                         Magnetospheric Physics: Magnetic storms and substorms, solar 
                         physics, astrophysics, coronal mass ejections, coronal holes, 
                         ejecta, driver gases, magnetic clouds, corotating streams.",
             abstract = "Using observations from the Advanced Composition Explorer (ACE) 
                         magnetic field and plasma experiments, we investigate the 
                         magnetic, thermal, and dynamic pressure balance in the border of a 
                         high-speed stream (HSS) and an average-speed interplanetary 
                         coronal mass ejection (ICME) observed on 2122 October (1999). We 
                         believe that the HSS compressed the ICME and intensified its 
                         internal southward magnetic field, resulting in a very intense 
                         geomagnetic storm, with peak Dst of \−237 nT. In solar 
                         cycle 23 this was the only event, out of 18 very intense 
                         geomagnetic storms, i.e., peak Dst < \−200 nT, which was 
                         caused by such a mechanism. We also address the solar origin of 
                         this very intense geomagnetic storm, using combined solar data 
                         from three different sources: a ground-based source, coronal hole 
                         maps from the National Solar Observatory (NSO) at Kitt Peak, and 
                         two satellite-based sources, eruption activity from the Extreme 
                         Ultraviolet Imaging Telescope (EIT) and coronal mass ejection 
                         observations from the Large Angle and Spectrometric Coronagraph 
                         (LASCO), both aboard the Solar and Heliospheric Observatory 
                         (SOHO). A coronal hole is evident just beside (to the east of) the 
                         active region from which an average-speed coronal mass ejection 
                         lifted off on 17-18 October (1999). This was the only possible 
                         solar origin of the 21-22 October interplanetary geomagnetic 
                         event.",
                  doi = "10.1029/2005JA011394",
                  url = "http://dx.doi.org/10.1029/2005JA011394",
                 issn = "0148-0227 and 2156-2202",
             language = "en",
           targetfile = "jgra18152.pdf",
        urlaccessdate = "12 maio 2024"
}