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@Article{BolzanDenaTard:2018:CoCoGe,
               author = "Bolzan, Maur{\'{\i}}cio J. A. and Denardin, Clezio Marcos and 
                         Tardelli, Alexandre",
          affiliation = "{Universidade Federal de Jata{\'{\i}} (UFJ)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {Universidade do Vale 
                         do Para{\'{\i}}ba (UNIVAP)}",
                title = "Comparison of H component geomagnetic field time series obtained 
                         at different sites over South America",
              journal = "Annales Geophysicae",
                 year = "2018",
               volume = "36",
               number = "3",
                pages = "937--943",
                month = "June",
             keywords = "Geomagnetism and paleomagnetism, time variations, diurnal to 
                         secular.",
             abstract = "The geomagnetic field in the Brazilian sector is influenced by the 
                         South American Magnetic Anomaly (SAMA) that causes a decrease in 
                         the magnitude of the local geomagnetic field when compared to 
                         other regions in the world. Thus, the magnetometer network and 
                         data set of space weather over Brazil led by Embrace are important 
                         tools for promoting the understanding of geomagnetic fields over 
                         Brazil. In this sense, in this work we used the H component of 
                         geomagnetic fields obtained at different sites in South America in 
                         order to compare results from the phase coherence obtained from 
                         wavelet transform (WT). Results from comparison between Cachoeira 
                         Paulista (CXP) and Eusebio (EUS), and Cachoeira Paulista and Sao 
                         Luis (SLZ), indicated that there exist some phenomena that occur 
                         simultaneously in both locations, putting them in the same phase 
                         coherence. However, there are other phenomena putting both 
                         locations in a strong phase difference as observed between CXP and 
                         Rio Grande, Argentina (RGA). This study was done for a specific 
                         moderate geomagnetic storm that occurred in March 2003. The 
                         results are explained in terms of nonlinear interaction between 
                         physical phenomena acting in distinct geographic locations and at 
                         different times and scales.",
                  doi = "10.5194/angeo-36-937-2018",
                  url = "http://dx.doi.org/10.5194/angeo-36-937-2018",
                 issn = "0992-7689",
             language = "en",
           targetfile = "bolzan_comparison.pdf",
        urlaccessdate = "04 dez. 2020"
}


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