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@Article{TakahashiWFBPEAOS:2020:EqPlBu,
               author = "Takahashi, Hisao and Wrasse, Cristiano Max and Figueiredo, Cosme 
                         Alexandre Oliveira Barros and Barros, D. and Paulino, Igo and 
                         Essien, Patrick and Abdu, Mangalathayil Ali and Otsuka, Yuichi and 
                         Shiokawa, Kazuo",
          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 {Universidade Federal de Campina Grande 
                         (UFCG)} and {Instituto Nacional de Pesquisas Espaciais (INPE)} and 
                         {Instituto Nacional de Pesquisas Espaciais (INPE)} and {Nagoya 
                         University} and {Nagoya University}",
                title = "Equatorial plasma bubble occurrence under propagation of MSTID and 
                         MLT gravity waves",
              journal = "Journal of Geophysical Research: Space Physics",
                 year = "2020",
               volume = "125",
               number = "9",
                pages = "e2019JA027566",
                month = "Sept.",
             abstract = "We observed a signature of equatorial plasma bubbles (EPBs) 
                         followed by a medium\‐scale traveling ionospheric 
                         disturbance (MSTID) crossing the solar terminator over the 
                         geomagnetic equator during the period of post\‐sunset rise 
                         (PSSR) of the F layer. Simultaneous observations of the EPBs and 
                         the MSTIDs by ground\‐based Global Navigation Satellite 
                         System receivers and OI 630\‐nm imagers, ionospheric 
                         parameters by ionosondes, and mesospherelower thermosphere (MLT) 
                         gravity waves (MLT\‐GWs) by OH airglow imagers have been 
                         carried out in the equatorial and low\‐latitude region of 
                         Brazil. On 1617 September 2015, MSTIDs with very fast horizontal 
                         phase speeds, propagating toward northeast (NE), were observed 
                         over the latitude region of 030S in the afternoon to evening time 
                         zone. It was geomagnetically quiet time (Kp: 23). An EPB 
                         development was observed after one of the MSTIDs crossed the solar 
                         terminator at 22:00 UT. Large\‐scale MLT\‐GWs with 
                         slower phase speeds were also observed both at S{\~a}o Jo{\~a}o 
                         do Cariri (7.5S, 35.0W) propagating from southwest (SW) to NE 
                         and Cachoeira Paulista (22.7S, 45.0W) propagating northward. 
                         This is to report on what we consider as a signature of direct 
                         seeding of EPBs by an MSTID that was likely induced by a secondary 
                         GW from tropospheric deep cloud convections to the south. This 
                         study highlights a possible dynamical process from the troposphere 
                         to ionosphere via this vertical coupling process over the 2,500 km 
                         of horizontal distance.",
                  doi = "10.1029/2019JA027566",
                  url = "http://dx.doi.org/10.1029/2019JA027566",
                 issn = "2169-9402",
             language = "en",
           targetfile = "takahashi_equatorial.pdf",
        urlaccessdate = "27 jan. 2021"
}


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