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@Article{MachoCorPauAngVie:2020:IoReJu,
               author = "Macho, Eduardo Perez and Correia, Em{\'{\i}}lia and Paulo, 
                         Claudio Machado and Angulo, Lady and Vieira, Jos{\'e} Augusto 
                         Gomes",
          affiliation = "{Universidade Presbiteriana Mackenzie} and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)} and {Universidade Presbiteriana 
                         Mackenzie} and {Universidade Presbiteriana Mackenzie} and 
                         {Universidade Presbiteriana Mackenzie}",
                title = "Ionospheric response to the June 2015 geomagnetic storm in the 
                         South American region",
              journal = "Advances in Space Research",
                 year = "2020",
               volume = "65",
               number = "9",
                pages = "2172--2183",
                month = "May",
             abstract = "The ionospheric dynamics in the South America (SA) sector during 
                         geomagnetic disturbed period from 21 to 24 June 2015 is 
                         investigated through ground ionosonde stations and Global 
                         Navigation Satellite System (GNSS) receivers, supported by Very 
                         Low Frequency (VLF) and magnetometer data. These disturbances were 
                         caused by 3 interplanetary shocks (IS) derived from 3 consecutives 
                         coronal mass ejections (CME) from the same solar active region; 
                         the first two CME were caused by filament eruptions, and the third 
                         was a much larger full halo CME, associated with a M2.6 solar 
                         flare. The first 2 shocks were compressive and did not cause an 
                         immediate response to the ionosphere in the analyzed region, while 
                         the third shock increased considerably the electron density from 
                         low to high-latitudes, triggering the second strongest geomagnetic 
                         storm of the 24th solar cycle. It was possible to observe the 
                         expansion of the crest of equatorial ionospheric anomaly (EIA) at 
                         midlatitudes and high-latitudes mainly due to prompt penetration 
                         electric field (PPEF) during the main phase and the recovery phase 
                         of the geomagnetic storm during the day.",
                  doi = "10.1016/j.asr.2020.02.025",
                  url = "http://dx.doi.org/10.1016/j.asr.2020.02.025",
                 issn = "0273-1177 and 1879-1948",
             language = "en",
           targetfile = "macho_ionosopheric.pdf",
        urlaccessdate = "27 jan. 2021"
}


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