Mesospheric gravity waves and ionospheric plasma bubbles observed during the COPEX campaign |
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| Authors: | I Paulino H Takahashi AF Medeiros CM Wrasse RA Buriti JHA Sobral D Gobbi |
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| Institution: | 1. Instituto Nacional de Pesquisas Espaciais, São José dos Campos, SP, Brazil;2. Universidade Federal de Campina Grande, Campina Grande, PB, Brazil;3. Universidade do Vale do Paraíba, São José dos Campos, SP, Brazil;1. National Research Council of Italy–Institute of Science and Technology for Ceramics (CNR-ISTEC), Via Granarolo 64, I-48018 Faenza, Italy;2. National Institute of Materials Physics, P.O. Box MG-7, Bucharest, Magurele 077125, Romania;3. METAV-R&D S. A., P.O. 22, Bucharest, Romania;1. Research Institute of Electronics, Shizuoka University, 3-5-1 Johoku, Hamamatsu 432-8011, Japan;2. St. Petersburg State Institute of Technology (Technical University), 26 Moskovsky Prospect, 190013 St. Petersburg, Russia;1. Electrical and Electronic Engineering, Newcastle University, Newcastle upon Tyne NE1 7RU, UK;2. Positioneering Ltd., Aberdeen AB12 3BR, UK;1. Department of Physics, Faculty of Science, Yamagata University, Yamagata 990-8560, Japan;2. Department of Electric and Electronic Engineering, Faculty of Science and Engineering, Kinki University, Higashiosaka 577-8502, Japan;3. Department of Electrical and Electronic Engineering, Faculty of Engineering, Shinshu University, Nagano 380-8553, Japan;4. Research Institutes of Electronics, Shizuoka University, Hamamatsu 432-8011, Japan |
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| Abstract: | During the Conjugate Point Experiment (COPEX) campaign performed at Boa Vista (, dip angle ) from October to December 2002, 15 medium-scale gravity waves in the OHNIR airglow images were observed. Using a Keogram image analysis, we estimate their parameters. Most of the waves propagate to Northwest, indicating that their main sources are Southeast of Boa Vista. Quasi-simultaneous plasma bubble activities in the OI 630 nm images were observed in seven cases. The distances between the bubble depletions have a linear relationship with the wavelengths of the gravity waves observed in the mesosphere, which suggests a direct contribution of the mesospheric medium-scale gravity waves in seeding the equatorial plasma bubbles. |
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