Results 191 to 200 of about 580 (231)

Planetary Ionospheres and Ionospheric Instabilities

International Astronomy and Astrophysics Research Journal
S. J. Gogoi
openaire   +2 more sources

Some of the next articles are maybe not open access.

Related searches:

On the planetary ionospheric vortex electric fields

Advances in Space Research, 2008
Abstract 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.
L.S. Alperovich, A. G. Khantadze, Oleg Kharshiladze, G. D. Aburjania   +3 more
openaire   +2 more sources

Recent advances in planetary ionospheres

Space Science Reviews, 1996
Recent results on the ionospheres of various planets are reviewed. In view of the large amount of data now available on Venus, much of the work relates to this planet. The outer planets received somewhat less attention partly due to lack of measurements in the post-Voyager era.
openaire   +2 more sources

Beaming of electromagnetic radiation by planetary ionospheres

Icarus, 1970
Abstract Use is made of elementary analytical and experimental results to predict an increased directivity from sources radiating inside or outside plasma layers. It is found that the directivity enhancement is higher when the source is between two plasma layers.
openaire   +2 more sources

Vertical penetration of planetary waves into the lower ionosphere

Journal of Atmospheric and Terrestrial Physics, 1979
Abstract Earlier work which provided evidence for coupling between pressure variations in the stratosphere and lower ionosphere in winter has been extended. Day-to-day changes in the height of fixed electron density isopleths in the E-region at a middle latitude often exhibit quasi-oscillations with amplitudes between 2 and 10km and periods between 5
G.M. Brown, J.I John
openaire   +2 more sources

Electric currents in E-like planetary ionospheres

Planetary and Space Science, 1990
In this paper an MHD approach is used to consider the conduction of electric current in a lightly ionized gas, taking into account the gradients of pressure in the ion and electron gases, in addition to the electric field. The coefficients of electrical conductivity are found for each driver of current.
openaire   +2 more sources

Hydrogen collisions in planetary atmospheres, ionospheres, and magnetospheres

Planetary and Space Science, 2008
Hydrogen 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.
openaire   +2 more sources

On obtaining electron-density profiles of planetary ionospheres

Journal of Atmospheric and Terrestrial Physics, 1970
Abstract Integral methods involving analytical solutions of obtaining electron-density profile of a stationary plasma, such as the Earth's ionosphere, from ionosonde records is extended to the case when the mass of plasma may be in motion such as in the exploration of planetary ionospheres and interplanetary gases.
openaire   +2 more sources

Planetary wave type oscillations in the ionospheric F region

Advances in Space Research, 1999
The existence of quasi-periodic oscillations (from 2- to 6.5-day) in the ionospheric F region, which may be connected with the planetary wave activity in the mesosphere/lower thermosphere, and the main results based on studies of the critical frequency foF2 of the F region in both hemispheres are presented.
openaire   +2 more sources

A planetary boundary for green water

Nature Reviews Earth & Environment, 2022
Lan Wang-Erlandsson, Arne Tobian, Ruud J Van Der Ent   +2 more
exaly