@Article{Romero-HernandezGoRoSeAgMeLu:2017:StIoDi,
               author = "Romero-Hernandez, Esmeralda and Gonzalez-Esparza, J. Americo and 
                         Rodriguez-Martinez, M. and Sergeeva, M. A. and Aguilar-Rodriguez, 
                         Ernesto and Mejia-Ambriz, J. C. and De la Luz, V.",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and 
                         {Universidad Nacional Aut{\'o}noma de M{\'e}xico} and 
                         {Universidad Nacional Aut{\'o}noma de M{\'e}xico} and 
                         {Universidad Nacional Aut{\'o}noma de M{\'e}xico} and 
                         {Universidad Nacional Aut{\'o}noma de M{\'e}xico} and 
                         {Universidad Nacional Aut{\'o}noma de M{\'e}xico} and 
                         {Universidad Nacional Aut{\'o}noma de M{\'e}xico}",
                title = "Study of ionospheric disturbances over Mexico associated with 
                         transient space weather events",
              journal = "Advances in Space Research",
                 year = "2017",
               volume = "60",
               number = "8",
                pages = "1838--1849",
                month = "Oct.",
             keywords = "Ionospheric disturbancesDaytime ionospheric 
                         scintillationGeomagnetic stormsSolar flares.",
             abstract = "We present an analysis of ionospheric disturbances at a location 
                         in Mexico (dip latitude: 28°, geographic latitude: 19° N) using 
                         two different parameters: ionospheric scintillation (IONS) and 
                         Total Electron Content (TEC). This study employs observations 
                         during 20142015 of astronomical radio sources at 140 MHz obtained 
                         by the MEXican Array Radio Telescope (MEXART) and TEC values from 
                         Global Ionospheric Maps data. To identify the ionospheric 
                         disturbances two indices were used: the wavelet IONS index based 
                         on the wavelet transform function of MEXART data and the 
                         ionospheric W-index based on the deviation of TEC. A set of 55 
                         wavelet IONS events and 63 W-index events were identified in this 
                         interval. We analyzed the association of theses events with solar 
                         flares that occurred around the solar zenith and/or geomagnetic 
                         storms. During this period, it was observed an incidence of 
                         daytime IONS at hours around the solar zenith. Some possible 
                         associations with solar flares were found. The preliminary results 
                         pointed out that, for this period, daytime scintillations could be 
                         linked to the occurrence of Esb-layers. In addition, most of the 
                         W-index events were possibly related to geomagnetic storms. We 
                         found that the majority of these geomagnetic storms were minor and 
                         moderate storms and were characterized by steeper falls of Dst. 
                         This first analysis revealed that wavelet methodology is useful in 
                         identifying and analyzing ionospheric disturbances. Also, MEXART 
                         observations provide a good tool for performing IONS studies at 
                         mid latitudes.",
                  doi = "10.1016/j.asr.2017.06.042",
                  url = "http://dx.doi.org/10.1016/j.asr.2017.06.042",
                 issn = "0273-1177 and 1879-1948",
             language = "en",
           targetfile = "esmeralda_study.pdf",
        urlaccessdate = "24 abr. 2024"
}