@InProceedings{Echer:2018:WaMuAn,
               author = "Echer, Ezequiel",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)}",
                title = "Wavelet multiresolution analysis of low frequency fluctuations in 
                         the Jupiter's magnetotail",
                 year = "2018",
         organization = "AGU Fall Meeting",
             abstract = "Wavelet multi-resolution analysis enables one to decompose a time 
                         series in orthogonal frequency bands. This method allows to study 
                         physical phenomena with different periods which are superposed in 
                         a time series. This is the case for Jupiter's magnetosphere 
                         observations, where the Jovian rotation signal strongly dominates 
                         much of the observed data. In this work, the Meyer wavelet 
                         transform is applied to Galileo magnetometer data during one 
                         crossing of the Jupiter magnetotail (June 1997). The magnetic 
                         field data are decomposed in orthonormal frequency levels using 
                         wavelet multiresoluton data. Further, in each of these band pass 
                         filtered levels, the multiple taper spectral technique is applied 
                         to find the most statistically significant signal frequencies. The 
                         results obtained are compared with previous works regarding 
                         periodicities other than the Jovian rotation in Jupiter's 
                         magnetosphere. The main periods found in this case study are: in 
                         the range of ~1.3-3.3 days, possibly related to global 
                         instabilities in the Jupiter's magnetosphere; and from 5 to 10 
                         days, which could be due to variations related to external (i. e. 
                         solar wind), or internal (e.g., volcanic activity at Io or global 
                         magnetospheric reconfiguration events) conditions. The method 
                         presented in this case study could be applied to other data sets 
                         from different planetary magnetosphere observations.",
  conference-location = "Washington, D. C.",
      conference-year = "10-14 dec.",
             language = "en",
           targetfile = "echer_wavelet2018.pdf",
        urlaccessdate = "28 abr. 2024"
}