Advantages and disadvantages of VTEC, ROTI and airglow images in studying equatorial plasma bubbles

Página do item simplificado
dc.contributor.authorSouza, Ana Lucia Christovam de
dc.contributor.authorProl, Fabricio dos Santos
dc.contributor.authorMuella, Marcio Tadeu de Assis Honorato
dc.contributor.authorPicanço, Giorgio Arlan da Silva
dc.contributor.authorCamargo, Paulo de Oliveira
dc.contributor.authorMonico, João Francisco Galera
dc.date.accessioned2026-01-29T18:28:11Z
dc.date.available2026-01-29T18:28:11Z
dc.date.issued22025
dc.description.abstractEquatorial plasma bubbles (EPBs) are large-scale plasma depletion structures, observed near the geomagnetic equator and in low- latitude regions after sunset. Several instruments have been employed to study EPBs, such as ionosondes, in situ satellites, coherent and incoherent scatter radars, airglow imagers, GNSS radio occultation, and GNSS ground-based stations. Among these instruments, Total Electron Content (TEC) and Rate of TEC change Index (ROTI) data derived by GNSS measurements are presenting as outstand- ing data sources to study the climatology of EPBs. In this study, we evaluate the reliability of TEC and ROTI index for mapping iono- spheric plasma bubble structures in comparison to airglow images, demonstrating the performance of each technique and highlighting their respective advantages and disadvantages. The results demonstrate that TEC and ROTI time series are effective to identify plasma bubble occurrence in terms of temporal profiles, horizontal maps, and keograms for EPB velocity estimation. In terms of ionospheric temporal profiles, all techniques presented a good correspondence, TEC data may present direct characteristics of plasma bubbles, i.e., the intensity of the electron density depletions, while ROTI values are more suitable to present the occurrence, or not, of plasma bubbles. TEC maps showed advantages in mapping the horizontal distributions of EPBs, specially at the equatorial regions where ROTI failed to detect disturbances. Velocity estimates based on keograms from airglow data averaged 111 m/s, while TEC and ROTI index averaged 106 m/s and 107 m/s, respectively. Overall, TEC data presented better estimates of velocities due to the geometric and physical information, while ROTI offers statistical insights that often mask the natural propagation of EPBs.
dc.description.physical14 p.
dc.format.mimetypePDF
dc.identifier.affiliationUniversidade do Vale do Paraíba
dc.identifier.affiliationUniversidade do Estado de São Paulo
dc.identifier.affiliationUniversity of Vaasa
dc.identifier.affiliationNational Land Survey of Finland
dc.identifier.bibliographicCitationSOUZA, A. L. C. et al. Advantages and disadvantages of VTEC, ROTI and airglow images in studying equatorial plasma bubbles. Advances in Space Research, v. 76, n. 10, p. 6278-6291, 2025. Disponível em: https://www.scopus.com/inward/record.uri?eid=2-s2.0-105017989675&doi=10.1016%2Fj.asr.2025.08.073&partnerID=40&md5=a2fe3ae7c2985a4af885ddcfb1340483.
dc.identifier.doi10.1016/j.asr.2025.08.073
dc.identifier.urihttps://repositorio.univap.br/handle/123456789/1118
dc.language.isoen_US
dc.publisherElsevier
dc.rights.holderAdvances in Space Research
dc.subject.keywordROTI
dc.subject.keywordPlasma Bubble
dc.subject.keywordGNSS
dc.subject.keywordIonosphere
dc.subject.keywordAirglow images
dc.titleAdvantages and disadvantages of VTEC, ROTI and airglow images in studying equatorial plasma bubbles
dc.typeArtigos de Periódicos

Arquivos

Pacote Original
Agora exibindo 1 - 1 de 1
Nenhuma Miniatura disponível
Nome:
Advantages and disadvantages of VTEC.pdf
Tamanho:
4.44 MB
Formato:
Adobe Portable Document Format
Descrição:
Acesso via Portal Capes
Baixar
Licença do Pacote
Agora exibindo 1 - 1 de 1
Nenhuma Miniatura disponível
Nome:
license.txt
Tamanho:
1.71 KB
Formato:
Item-specific license agreed upon to submission
Descrição:
Baixar

Coleções

Produção acadêmica-PPGFA