Browsing by Autor "A. J. Carrasco"

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Signature of white bubbles in the equatorial ionosphere
(2024) H. Takahashi; C. A. O. B. Figueiredo; C. M. Wrasse; Diego Barros; C. S. Carmo; A. J. Carrasco; R. A. Buriti; Igo Paulino; Fábio Egito; Luiz Fillip Rodrigues Vital
<title>Abstract</title> From airglow OI 630 nm observations in the low-latitude ionosphere, we observed an enhancement of the emission rate inside of plasma bubbles (EPBs). It occurred, on some occasions, after the local midnight during the equinox seasons. The all-sky imager has been operated at Bom Jesus da Lapa (BJL) (13.3°S, 43.5°W, dip.14.1°S). In the night of 7–8 October 2021, a dark plasma bubble turned into a bright one due to an enhancement of the OI 630 nm emission rate, which we call it as White Bubble (WhB). Prior to the WhB appearance, the imager detected a presence of Midnight Brightness Wave (MBW) moving rapidly from the equator to the south of BJL. At the same time, a downward movement of the height of the F-layer was observed at Cachoeira Paulista (22.7 °S, 45.0 °W, dip. 18.1°S). We further observed that the WhB extended equatorward when the EPB eastward drift increased. Similar WhBs were observed on seven nights during 2021–2022. These observational facts suggested that the MBW interacted with EPB, causing the depletion inside of EPB to be filled with plasma, resulting in the generation of WhB.
Signature of white bubbles in the equatorial ionosphere
(2025) H. Takahashi; C. A. O. B. Figueiredo; C. M. Wrasse; Diego Barros; C. S. Carmo; A. J. Carrasco; R. A. Buriti; Igo Paulino; Francisco Edson Mendonça Gomes; Luiz Fillip Rodrigues Vital
<title>Abstract</title> From airglow OI 630 nm observations in the low-latitude ionosphere, we identified an enhancement in the emission rate inside Equatorial Plasma Bubbles (EPBs) on certain occasions after local midnight during equinox seasons. On the night of 7–8 October 2021, an all-sky imager, operated at Bom Jesus da Lapa (BJL) (13.3°S, 43.5°W, dip 14.1°S), observed a dark plasma bubble transitioning into a bright one due to an enhancement of the OI 630 nm emission rate, a phenomenon we refer to as a "White Bubble" (WhB). Prior to the appearance of the WhB, the imager detected a Midnight Brightness Wave (MBW) rapidly moving southward from the equator. Concurrently, a downward movement of the F-layer's height was observed at Cachoeira Paulista (22.7°S, 45.0°W, dip 18.1°S). The WhB extended equatorward when the EPB's eastward drift speed increased. Similar WhBs were observed on seven nights during 2021–2022. These observations suggest that the MBW interacted with the EPB, causing plasma depletion within the EPB to be filled, ultimately generating a WhB.
Storm-time Disturbed Electric Field Influence in the Strong Sporadic E-layers Occurrence over Boa Vista, a low latitude Brazilian Region
(2019) L. C. A. Resende; Shi Jian-Kui; C. M. Denardini; P. A. B. Nogueira; I. S. Batista; Christina Arras; V. F. Andrioli; Juliano Moro; L. A. Da Silva; A. J. Carrasco
Earth and Space Science Open Archive This preprint has been submitted to and is under consideration at Journal of Geophysical Research - Space Physics. ESSOAr is a venue for early communication or feedback before peer review. Data may be preliminary.Learn more about preprints preprintOpen AccessYou are viewing the latest version by default [v1]Storm-time Disturbed Electric Field Influence in the Strong Sporadic E-layers Occurrence over Boa Vista, a low latitude Brazilian RegionAuthors Laysa Cristina Araujo Resende iD Shi Jiankui Clezio Marcos Denardini Paulo Alexandre Bronzato Nogueira iD Inez S. Batista Christina Arras Vania Fatima Andrioli Juliano Moro Ligia Alves Da Silva iD Alexander Jose Carrasco iD Paulo França Barbosa Neto iD Chi Wang Liu Zhengkuan See all authors Laysa Cristina Araujo ResendeiDCorresponding AuthorNational Institute for Space Research/China-Brazil Joint Laboratory of Space WeatheriDhttps://orcid.org/0000-0001-6968-6184view email addressThe email was not providedcopy email addressShi JiankuiState Key Laboratory of Space Weather, China Academy of Science, CASview email addressThe email was not providedcopy email addressClezio Marcos DenardiniNational Institute for Space Researchview email addressThe email was not providedcopy email addressPaulo Alexandre Bronzato NogueiraiDFederal Institute of Education, Science and Technology of Sao PauloiDhttps://orcid.org/0000-0003-0810-1044view email addressThe email was not providedcopy email addressInez S. BatistaNational Institute for Space Researchview email addressThe email was not providedcopy email addressChristina ArrasGFZ Potsdamview email addressThe email was not providedcopy email addressVania Fatima AndrioliNational Institute for Space Research - INPEview email addressThe email was not providedcopy email addressJuliano MoroSouthern Regional Space Research Center - CRS/COCRE/INPEview email addressThe email was not providedcopy email addressLigia Alves Da SilvaiDNational Institute for Space Research (INPE) / China-Brazil Joint Laboratory for Space WeatheriDhttps://orcid.org/0000-0002-8822-5030view email addressThe email was not providedcopy email addressAlexander Jose CarrascoiDUniversidad de los AndesiDhttps://orcid.org/0000-0002-6182-8077view email addressThe email was not providedcopy email addressPaulo França Barbosa NetoiDNational Institute for Space ResearchiDhttps://orcid.org/0000-0001-5733-3541view email addressThe email was not providedcopy email addressChi WangNational Space Science Center, Chinese Academy of Sciencesview email addressThe email was not providedcopy email addressLiu ZhengkuanState Key Laboratory of Space Weather, National Space Science Center (NSSC), Chinese Academy of Sciencesview email addressThe email was not providedcopy email address