Results 161 to 170 of about 1,043 (204)

On the Gravity Wave‐Seeded Ionospheric Irregularities in the Martian Ionosphere

Journal of Geophysical Research: Planets
Abstract For the past few decades, it has been demonstrated that gravity waves (GWs) and neutral winds can drive ionospheric irregularities on Earth. Still, as far as we know, the formation of ionospheric irregularities on Mars due to GWs has not been well studied.
Rong Tian, Chunhua Jiang, Beatriz Sánchez‐Cano, Wenjie Yin, Guobin Yang, Tongxin Liu, Yaogai Hu   +6 more
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Seasonal Variation of the Martian Dayside Ionosphere

Journal of Geophysical Research: Space Physics
AbstractThe Martian ionosphere has many similarities and differences compared to Earth, attracting significant attention. This paper utilizes radio occultation data from the Mars Global Surveyor (MGS), Mars Atmosphere and Volatile Evolution Mission (MAVEN), and ESA Mars Express mission (MEX), associated with the measurements from Mars Advanced Radar ...
Haibing Ruan
exaly   +2 more sources

Observations of Vertical Reflections from the Topside Martian Ionosphere

Space Science Reviews, 2006
The Martian ionosphere has for the first time been probed by a low frequency topside radio wave sounder experiment (MARSIS) (Gurnett et al., 2005). The density profiles in the Martian ionosphere have for the first time been observed for solar zenith angles less than 48 degrees. The sounder spectrograms typically have a single trace of echoes, which are
Nielsen, E., Zou, H., Gurnett, D., Kirchner, D., Morgan, D., Huff, R., Orosei, R., Safaeinili, A., Plaut, J., Picardi, G.   +9 more
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The Martian Thermosphere/Ionosphere: Ancient and Modern

, 1999
We review our current understanding of the thermosphere and ionosphere of Mars at high and low solar activities, including density profiles of ions and minor neutral species, their variation with solar activity, and current and escape rates. We then discuss models of the ancient Martian thermosphere, focusing on the era about 2.5 Gyr before present ...
Fox, Jane L., Bougher, Stephen W.
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Effects of Solar Wind Density and Velocity Variations on the Martian Ionosphere and Plasma transport—A MHD Model Study [PDF]

Journal of Geophysical Research: Space Physics, 2023
Solar wind dynamic pressure, consisting solar wind density and velocity , is an important external driver that controls Martian plasma environment. In this study, a 3D magnetohydrodynamic model is applied to investigate the separate influences of solar ...
Haoyu Lu, Jinbin Cao, Xiaoshu Wu
exaly   +1 more source

Modification of Martian Ionosphere

IEEE Transactions on Plasma Science, 2021
To partially meet the communication requirements in Mars, low-frequency ground-to-ground communication is likely to be used in the future and hence, it is desirable to increase electron density in the Martian ionosphere. As a convenient means to this, we have proposed and explored the production of high electron density regions in the Martian ...
Sujeet Kumar Agarwal, Mahendra Singh Sodha   +1 more
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On the extent of the Martian ionosphere

Journal of Geophysical Research, 1973
The boundary of the Martian ionosphere just above the photochemical layer, where solar-wind induced convection becomes important, is estimated. The Martian ionosphere is expected to terminate at an altitude of approximately 300 km.
S. J. Bauer, R. E. Hartle
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Martian Ionospheric Magnetic Fluctuations

2023
Understanding the properties and variability of the ionosphere is vital for understanding the atmosphere of Mars. The presence and property of waves provide insight into the plasma and magnetic environment. We conducted a search for 5 - 16 Hz signals below 400 km in magnetic field data from Mars Global Surveyor (MGS), the Mars Atmosphere and Volatile ...
Teresa Esman, Jared Espley, Jacob Gruesbeck, Christopher Fowler, Shaosui Xu, Meredith Elrod, Yuki Harada, Joe Giacalone, Alexa Halford, Anne Verbiscer   +9 more
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Photoelectron fluxes in the Martian ionosphere

Journal of Geophysical Research: Space Physics, 1979
The equilibrium photoelectron distribution in the upper atmosphere of Mars is calculated and compared with a typical theoretical model of the photoelectron distribution in the upper atmosphere of the earth. The neutral upper atmosphere and ionosphere models used in the calculations for Mars are based on the Viking 1 neutral mass spectrometer and ...
G. P. Mantas, W. B. Hanson
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Estimation of the total electron content of the Martian ionosphere using radar sounder surface echoes

Geophysical Research Letters, 2007
The Martian ionosphere's local total electron content (TEC) and the neutral atmosphere scale height can be derived from radar echoes reflected from the surface of the planet.
Ali Safaeinili, W Kofman, Jeremie Mouginot   +2 more
exaly   +2 more sources