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Hydrogen collisions in planetary atmospheres, ionospheres, and magnetospheres
Planetary and Space Science, 2008Hydrogen is the most abundant element in the universe. Molecular hydrogen is the dominant chemical species in the atmospheres of the giant planets. Because of their low masses, neutral and ionized hydrogen atoms are the dominant species in the high atmospheres of many planets.
D. Huestis
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Planetary waves in rotating ionosphere
Plasma Physics Reports, 2008The problem of propagation of ultralong planetary waves in the Earth’s upper atmosphere is considered. A new exact solution to the MHD equations for the ionosphere is obtained in spherical coordinates with allowance for the geomagnetic field and Earth’s rotation.
A. G. Khantadze +2 more
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Photoelectrons as a Tracer of Planetary Atmospheric Composition: Application to CO on Mars
Journal of Geophysical Research: Planets, 2020Photoelectrons are an extensively studied component of planetary ionospheres which have been frequently used as a diagnostic of ambient magnetic fields. We show in this study that they also provide information on atmospheric composition via the altitude ...
X.‐S. Wu +6 more
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Spectroscopy and Photochemistry of Planetary Atmospheres and Ionospheres
2019chemical composition of any planetary atmosphere is of fundamental importance in determining its photochemistry and dynamics in addition to its thermal balance, climate, origin, and evolution.
V. Krasnopolsky
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Planetary wave effect on ionospheric absorption
Journal of Atmospheric and Solar-Terrestrial Physics, 1998Abstract A relationship is examined between quasi-periodic fluctuations in absorption data at ionospheric altitudes and wave perturbations in wind data at tropospheric, stratospheric and lower mesospheric heights at Indian latitudes. The spectral analyses using Maximum Entropy Method (MEM) reveal almost the same band of periodicities in both the ...
Saji Abraham +5 more
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Traveling planetary scale waves in the ionosphere
Journal of Atmospheric and Terrestrial Physics, 1975Abstract From an analysis of long distance received daytime VLF phase data over three transmission paths spanning a total of 160° of longitude, and from lower stratospheric radiance data from the SIRS instrument on the Nimbus IV weather satellite, traveling planetary scale waves are shown to exist at about 70 km for the 1970/1971 winter.
D.J Cavalier, R.J Deland
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Radio Occultation Experiment for Probing Planetary Ionospheres
2019 URSI Asia-Pacific Radio Science Conference (AP-RASC), 2019Radio occultation (RO) is an important measurement technique for studying planetary atmospheres. It is based on the measurement of the frequency shift of the received radio signal from the spacecraft, caused by the bending of radio waves in the atmosphere.
Varun Sheel, Jayesh Pabari
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On the planetary ionospheric vortex electric fields
Advances in Space Research, 2008Abstract The paper presents a physical mechanism of large-scale vortex electric field generation in the ionospheric E- and F-layers. It shows that the planetary-scale, synoptic short-period (from several second to several hours) and fast processes (with propagation velocity higher than 1 km/s) produce a planetary-scale internal vortex electric field.
G.D. Aburjania +3 more
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Ionospheric Irregularities Initiated by Planetary Waves
Cosmic Research, 2001The nonstationary process of the accumulation of ions of meteoric origin, which is caused by propagation of planetary waves at altitudes of the lower ionosphere, is considered. Based on horizontal and vertical ion drift in planetary waves, a possibility of plasma density increases by a factor of 10–20 in comparison with the background concentration is ...
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