Results 61 to 70 of about 1,043 (204)

Mars’ ionosphere: The key for systematic exploration of the red planet

Frontiers in Astronomy and Space Sciences, 2023
The near three decades of continuous Mars’ exploration has opened the door to the understanding of the Martian space environment, which includes the solar wind, magnetosphere, ionosphere and atmosphere, and is a complex structure with simultaneous ...
Beatriz Sánchez-Cano
doaj   +1 more source

Thermal Escape of Atomic Hydrogen on Mars: A Comprehensive View With a General Circulation Model

Journal of Geophysical Research: Planets, Volume 131, Issue 6, June 2026.
Abstract Mars loses water mainly through the photodissociation of water vapor, followed by the thermal escape of light hydrogen atoms. Observations have revealed large seasonal variations in hydrogen concentration in the upper thermosphere, peaking during southern summers and intensifying during dust storms.
Alexander S. Medvedev, Ngan H. D. Trinh
wiley   +1 more source

Thermal Effects of Gravity Waves in Planetary Atmospheres

Journal of Geophysical Research: Planets, Volume 131, Issue 6, June 2026.
Abstract Internal atmospheric acoustic‐gravity waves substantially drive the global dynamical, thermal, and compositional structure of planetary atmospheres. While the dynamical effects of acoustic‐gravity waves have been extensively studied, especially on Earth and Mars, their thermal effects are insufficiently explored in planetary atmospheres.
Erdal Yiğit
wiley   +1 more source

Impact of Coronal Mass Ejection-driven Enhanced Magnetic Pressure on the Martian Northern Hemispheric Ionosphere during 2024 May 17–18

The Astrophysical Journal
The Martian northern hemisphere (NH) is relatively devoid of ambient magnetic fields compared to the southern hemisphere (SH), which houses the strong crustal field regions.
V.S.P. Pranjali, Chinmaya Nayak, Erdal Yiğit, David Andrews, Stephan Buchert, Suraj Gupta, Satyavir Singh, A.P. Dimri   +7 more
doaj   +1 more source

The Potential for a Networked Ionospheric Sounding Constellation

Space Weather, 2022
A novel networked sounding constellation mission concept is proposed. Radio sounding is the original sensing method that proved the existence of the ionosphere. Satellite‐borne sounders provided the first global observations of the terrestrial ionosphere
A. T. Chartier
doaj   +1 more source

First Detection of the Two‐Dimensional Vertical Propagation of Traveling Ionospheric Disturbances Associated With Atmospheric Gravity Waves in the Martian Ionosphere

Geophysical Research Letters, Volume 53, Issue 10, 28 May 2026.
Abstract We report the detection of a traveling ionospheric disturbance (TID) captured by the Mars Advanced Radar for Subsurface and Ionosphere Sounding (MARSIS) Active Ionospheric Sounding (AIS) instrument aboard the Mars Express spacecraft at 150–250 km altitude.
Rong Tian, Beatriz Sánchez‐Cano, Chunhua Jiang, Mark Lester, Dikshita Meggi, Simon Joyce, Christopher M. Fowler, Andrea Cicchetti, Mats Holmstrom, David Andrews, Pedro Machado   +10 more
wiley   +1 more source

Dynamic response of the Martian ionosphere to an interplanetary shock: Mars Express and MAVEN observations

, 2017
International audienceMultipoint observations from the Mars Advanced Radar for Subsurface and Ionosphere Sounding (MARSIS) instrument on board Mars Express and the Mars Atmosphere and Volatile EvolutioN (MAVEN) mission reveal a dynamic response of the ...
Lee, C. O., Dibraccio, G. A., Mazelle, C., Harada, Y., C. Mazelle, C. O. Lee, Larson, D. E., S. Ruhunusiri, Hara, T., Espley, J., D. E. Larson, Halekas, J. S., D. A. Gurnett, Gurnett, D. A., Ruhunusiri, S., Y. Harada, T. Hara, B. M. Jakosky, A. J. Kopf, J. S. Halekas, Jakosky, B. M., G. A. DiBraccio, Mitchell, D. L., J. Espley, D. L. Mitchell, Kopf, A. J.   +25 more
core   +1 more source

Large‐Scale Magnetosheath Jets Formed by Shock‐Discontinuity Interactions: A Three‐Dimensional Global Hybrid Simulation

Geophysical Research Letters, Volume 53, Issue 9, 16 May 2026.
Abstract Magnetosheath high‐speed jets with enhanced dynamic pressure are common in Earth's magnetosheath and can impinge on the magnetopause, driving pronounced boundary deformation. Recent observations indicate that shock–discontinuity interactions (SDIs) can generate magnetosheath jets, but the formation mechanism is still unclear.
Jin Guo, San Lu, Quanming Lu, Yufei Zhou, Boyi Wang, Tianran Sun, Yihong Guo, Zhongwei Yang, Shimou Wang, Junyi Ren, Jiuqi Ma, Chao Shen, Xinliang Gao, Rongsheng Wang   +13 more
wiley   +1 more source

A MAVEN investigation of O++ in the dayside Martian ionosphere

Earth and Planetary Physics, 2020
O++ is an interesting species in the ionospheres of both the Earth and Venus. Recent measurements made by the Neutral Gas and Ion Mass Spectrometer (NGIMS) on board the Mars Atmosphere and Volatile Evolution (MAVEN) spacecraft provide the first firm ...
Hao Gu, Jun Cui, ZhaoGuo He, JiaHao Zhong   +3 more
doaj   +1 more source

Simultaneous Compressive Kinetic‐Scale Fluctuations and Second‐Harmonic Proton Cyclotron Waves Inside a Martian Magnetosheath Structure

Geophysical Research Letters, Volume 53, Issue 8, 28 April 2026.
Abstract Mars directly interacts with the solar wind and hosts a complex plasma‐wave environment. Using MAVEN observations, we identify an event in the dusk‐side Martian magnetosheath where strongly compressive sub‐cyclotron kinetic‐scale fluctuations coexist with second‐harmonic proton cyclotron waves (PCWs).
Jintian Yang, Song Fu, Xiaotong Yun, Taifeng Jin, Hui Zhang, Shuyue Pang, Yuequn Lou, Longfei Jia, Yibin Zhao, Yi Qin, Binbin Ni   +10 more
wiley   +1 more source