Electrodynamics of the Low-latitude Thermosphere by Comparison of Zonal Neutral Winds and Equatorial Plasma Bubble Velocity

Authors

  • Narayan P. Chapagain Department of Physics, Patan M. Campus Tribhuvan University, Kathmandu

DOI:

https://doi.org/10.3126/jist.v20i2.13955

Keywords:

Equatorial plasma bubble, neutral winds, drift velocity, Fabry-Perot Interferometer, F-region dynamo

Abstract

The coincident observations of nighttime thermospheric zonal neutral winds and equatorial plasma bubble (EPB) drift velocities over Brazil during the October–December,2009 and 2010 are used to examine the coupling relationship between the thermosphere and ionosphere. The EPB zonal drift velocities are estimated using the airglow images recorded by optical imaging system, while the neutral winds are measured by using a bi-static Fabry–Perot interferometer (FPI) experiment deployed at two stations from Brazil. The results reveal the similar pattern in the EPB drift velocities and zonal neutral winds motion during the nighttime and night-to-night thereby illustrating a fully developed F-region dynamo. However, background natural winds also exceed EPBs velocities especially during the development phase of EPBs illustrating that F-region dynamo is not fully activated.

Journal of Institute of Science and Technology, 2015, 20(2): 84-89  

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Published

2015-11-26

How to Cite

Chapagain, N. P. (2015). Electrodynamics of the Low-latitude Thermosphere by Comparison of Zonal Neutral Winds and Equatorial Plasma Bubble Velocity. Journal of Institute of Science and Technology, 20(2), 84–89. https://doi.org/10.3126/jist.v20i2.13955

Issue

Vol. 20 No. 2 (2015)

Section

Research Articles

License

The views and interpretations in this journal are those of the author(s). They are not attributable to the Institute of Science and Technology, T.U. and do not imply the expression of any opinion concerning the legal status of any country, territory, city, area of its authorities, or concerning the delimitation of its frontiers of boundaries.

The copyright of the articles is held by the Institute of Science and Technology, T.U.