@Article{KlausnerGonDomMenRei:2014:StLoRe,
               author = "Klausner, Virginia and Gonz{\'a}lez, Arian Ojeda and Domingues, 
                         Margarete Oliveira and Mendes, Odim and Reinaldo Rodriguez Papa, 
                         A.",
          affiliation = "{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 National Observatory - ON, 20921-400, RJ, 
                         Brazil; State University of Riode Janeiro - UERJ, 20550-900, RJ, 
                         Brazil",
                title = "Study of local regularities in solar wind data and ground 
                         magnetograms",
              journal = "Journal of Atmospheric and Solar-Terrestrial Physics",
                 year = "2014",
               volume = "112",
                pages = "10--19",
             abstract = "Interplanetary coronal mass ejections (ICMEs) can reach the 
                         Earth[U+05F3]s magnetosphere causing magnetic disturbances. For 
                         monitoring purposes, some satellites measure the interplanetary 
                         parameters which are related to energy transfer from solar wind 
                         into magnetosphere, while ground-based magnetometers measure the 
                         geomagnetic disturbance effects. Data from the ACE satellite and 
                         from some representative magnetometers were examined here via 
                         discrete wavelet transform (DWT). The increase in the amplitude of 
                         wavelet coefficients of solar wind parameters and geomagnetic 
                         field data is well-correlated with the arrival of the shock and 
                         sheath regions, and the sudden storm commencement and main phase, 
                         respectively. As an auxiliary tool to verify the disturbed 
                         magnetic fields identified by the DWT, we developed a new approach 
                         called effectiveness wavelet coefficient (EWC) methodology. The 
                         first interpretation of the results suggests that DWT and EWC can 
                         be effectively used to characterize the fluctuations on the solar 
                         wind parameters and their contributions to the geomagnetic field. 
                         Further, this kind of technique could be implemented in quasi 
                         real-time to facilitate the identification of the shock and the 
                         passage of the sheath region which sometimes can be followed by 
                         geoeffective magnetic clouds. Also, the technique shows to be very 
                         useful for the identification of time intervals in the dataset 
                         during geomagnetic storms which are associated to interplanetary 
                         parameters under very well defined conditions. It allows selecting 
                         ideal events for investigation of magnetic reconnection in order 
                         to highlight in a more precise manner the mechanisms existing in 
                         the electrodynamical coupling between the solar wind and the 
                         magnetosphere. © 2014 Elsevier Ltd.",
                  doi = "10.1016/j.jastp.2014.01.013",
                  url = "http://dx.doi.org/10.1016/j.jastp.2014.01.013",
                 issn = "1364-6826",
                label = "scopus 2014-05 KlausnerOjeOliMenRei:2014:StLoRe",
             language = "en",
           targetfile = "Klausner_etal_2014JASTP.pdf",
        urlaccessdate = "30 abr. 2024"
}