@Article{KuwabaraBEMYKFTDHSDS:2009:DeInCo,
               author = "Kuwabara, T. and Bieber, J. W. and Evenson, P. and Munakata, K. 
                         and Yasue, S. and Kato, C. and Fushishita, A. and Tokumaru, M. and 
                         Duldig, M. L. and Humble, J. E. and Silva, Marlos rockenbach da 
                         and Dal Lago, Alisson and Schuch, Nelso Jorge",
          affiliation = "{} and {} and {} and {} and {} and {} and {} and {} and {} and {} 
                         and {Instituto Nacional de Pesquisas Espaciais (INPE)} and 
                         {Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)}",
                title = "Determination of interplanetary coronal mass ejection geometry and 
                         orientation from ground-based observations of galactic cosmic 
                         rays",
              journal = "Journal of Geophysical Research",
                 year = "2009",
               volume = "114",
               number = "A05109",
                month = "May",
             abstract = "We have developed a method for determining interplanetary coronal 
                         mass ejection (ICME) geometry from galactic cosmic ray data 
                         recorded by the ground-based muon detector network. The cosmic ray 
                         density depression inside the ICME, which is associated with a 
                         Forbush decrease, is represented by an expanding cylinder that is 
                         based on a theoretical model of the cosmic ray particle diffusion. 
                         ICME geometry and orientation are deduced from observed time 
                         variations of cosmic ray density and density gradient and are 
                         compared with those deduced from a magnetic flux rope model. From 
                         March 2001 to May 2005, 11 ICME events that produced Forbush 
                         decreases >2% were observed, and clear variations of the density 
                         gradient due to ICME passage were observed in 8 of 11 events. In 
                         five of the eight events, signatures of magnetic flux rope 
                         structure (large, smooth rotation of magnetic field) were also 
                         seen, and the ICME geometry and orientation deduced from the two 
                         methods were very similar in three events. This suggests that the 
                         cosmic ray-based method can be used as a complementary method for 
                         deducing ICME geometry especially for events where a large Forbush 
                         decrease is observed.",
                  doi = "10.1029/2008JA013717",
                  url = "http://dx.doi.org/10.1029/2008JA013717",
                 issn = "0148-0227 and 2156-2202",
             language = "en",
           targetfile = "Determination of interplanetary coronal mass ejection geometry and 
                         orientationa from ground-based observations of galactic cosmic 
                         rays Kuwatbara.pdf",
        urlaccessdate = "18 jun. 2024"
}