Simultaneous observation of ionospheric plasma bubbles and mesospheric gravity waves during the SpreadFEx Campaign
H. Takahashi,Michael J. Taylor,Pierre-Dominique Pautet,Amauri Fragoso de Medeiros,Delano Gobbi,Cristiano Max Wrasse,Joaquim Fechine,M. A. Abdu,Inez S. Batista,Eurico R. de Paula,J. H. A. Sobral,Daniela C. S. Arruda,Sharon L. Vadas,F. S. Sabbas,David C. Fritts +14 more
Reads0
Chats0
TLDR
In this article, two airglow CCD imagers, located at Cariri (7.4° S, 36.5° W, geomag. 11° S) and near Brasilia (14.8°S, 47.6°W, geOMag. 10°S) were operated simultaneously and measured the equatorial ionospheric bubbles and their time evolution by monitoring the airglove OI 6300 intensity depletions.Abstract:
. During the Spread F Experiment campaign, under NASA Living with a Star (LWS) program, carried out in the South American Magnetic Equator region from 22 September to 8 November 2005, two airglow CCD imagers, located at Cariri (7.4° S, 36.5° W, geomag. 11° S) and near Brasilia (14.8° S, 47.6° W, geomag. 10° S) were operated simultaneously and measured the equatorial ionospheric bubbles and their time evolution by monitoring the airglow OI 6300 intensity depletions. Simultaneous observation of the mesospheric OH wave structures made it possible to investigate the relationship between the bubble formation in the ionosphere and the gravity wave activity at around 90 km. On the evening of 30 September 2005, comb-like OI 6300 depletions with a distance of ~130 km between the adjacent ones were observed. During the same period, a mesospheric gravity wave with a horizontal wavelength of ~130 km was observed. From the 17 nights of observation during the campaign period, there was a good correlation between the OI 6300 depletion distances and the gravity wave horizontal wavelengths in the mesosphere with a statistically significant level, suggesting a direct contribution of the mesospheric gravity wave to plasma bubble seeding in the equatorial ionosphere.read more
Citations
More filters
Journal ArticleDOI
Quiescent prominence dynamics observed with the hinode solar optical telescope. i. turbulent upflow plumes
Thomas E. Berger,G. L. Slater,Neal E. Hurlburt,Richard A. Shine,Theodore D. Tarbell,Alan M. Title,Bruce W. Lites,Takenori J. Okamoto,Kiyoshi Ichimoto,Yukio Katsukawa,Tetsuya Magara,Yoshinori Suematsu,Toshifumi Shimizu +12 more
TL;DR: In this paper, a detailed kinematic measurement of the small-scale turbulent upflows seen in several prominences in the SOT database is presented, and the authors conclude that buoyant plumes are a source of quiescent prominence mass as well as a mechanism by which prominence plasma is advected upward.
Journal ArticleDOI
Internal wave coupling processes in Earth's atmosphere
TL;DR: A review of vertical coupling in the atmosphere and ionosphere system induced by internal waves of lower atmospheric origin is presented in this article, focusing on gravity waves, solar tides, planetary Rossby and Kelvin waves.
Journal ArticleDOI
Gravity wave initiation of equatorial spread F/plasma bubble irregularities based on observational data from the SpreadFEx campaign
TL;DR: In this paper, the role of gravity waves in the instability initiation leading to equatorial spread F development was investigated using ground-based experiments conducted during the 2005 SpreadFEx campaign in Brazil.
Journal ArticleDOI
Numerical Simulations of the Magnetic Rayleigh-Taylor Instability in the Kippenhahn-Schlüter Prominence Model. I. Formation of Upflows
TL;DR: In this article, the authors investigate the nonlinear stability of the Kippenhahn-Schluter prominence model for the interchange mode of the magnetic Rayleigh-Taylor instability.
Journal ArticleDOI
Gravity wave and tidal influences on equatorial spread F based on observations during the Spread F Experiment (SpreadFEx)
David C. Fritts,Sharon L. Vadas,Dennis M. Riggin,M. A. Abdu,Inez S. Batista,H. Takahashi,Amauri Fragoso de Medeiros,Farzad Kamalabadi,Hanli Liu,Bela G. Fejer,Michael J. Taylor +10 more
TL;DR: In this paper, the authors used the results of the SpreadFEx campaign to estimate gravity wave characteristics at the bottomside F layer, and to assess their possible con- tributions to optimal seeding conditions for equatorial spread F and plasma instability growth rates.
References
More filters
An introduction to dynamic meteorology
TL;DR: The instructor's manual to a work which introduces the fundamental principles of meteorology, explaining storm dynamics and the dynamics of climate and its global implications is described in this paper, where the authors present a detailed discussion of the relationship between meteorology and climate.
Journal ArticleDOI
Gravity wave dynamics and effects in the middle atmosphere
TL;DR: In this article, a review of gravity wave sources and characteristics, the evolution of the gravity wave spectrum with altitude and with variations of wind and stability, the character and implications of observed climatologies, and the wave interaction and instability processes that constrain wave amplitudes and spectral shape are discussed.
Journal ArticleDOI
Radar observations of F region equatorial irregularities
Ronald F. Woodman,Cesar La Hoz +1 more
TL;DR: In this paper, the results of backscatter observations of the F region irregularities made with the large 50MHz radar at Jicamarca, Peru, during a few days of observations are presented.
An introduction to dynamic meteorology
TL;DR: The instructor's manual to a work which introduces the fundamental principles of meteorology, explaining storm dynamics and the dynamics of climate and its global implications is described in this article, where the authors present a detailed discussion of the relationship between meteorology and climate.
Journal ArticleDOI
Effects of the vertical plasma drift velocity on the generation and evolution of equatorial spread F
TL;DR: In this paper, the authors used radar observations from the Jicamarca Observatory from 1968 to 1992 to study the effects of the F region vertical plasma drift velocity on the generation and evolution of equatorial spread F.