Results 61 to 70 of about 319 (179)

Effects of Martian Dust Storms on Ionospheric Peak Altitudes

The Astrophysical Journal
The effects of Martian dust storms on the atmosphere and ionosphere is one of the hot topics in Mars research. This paper reports on the effects of a local dust storm on the ionospheric peak altitude based on electron density profile observations from ...
Yu Lou, Hong Zou, Yu Guang Ye, Jin Song Wang   +3 more
doaj   +1 more source

Crosstalk in O2+ and CO2+ Channel Groups of MAVEN/NGIMS Ion Measurements

Journal of Geophysical Research: Space Physics, Volume 131, Issue 7, July 2026.
Abstract The Neutral Gas and Ion Mass Spectrometer (NGIMS) onboard the Mars Atmosphere and Volatile EvolutioN mission has provided critical insights into the composition and isotopic structure of Mars' ionosphere. However, significant model‐observation discrepancies of densities of some ion species suggest the presence of crosstalk, that is ...
Long Cheng, Erik Vigren, A. R. Poppe
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

Global Occurrence of Solitary Waves in the Martian Magnetosphere

Geophysical Research Letters, Volume 53, Issue 11, 16 June 2026.
Abstract This letter presents a global occurrence of bipolar solitary waves (SWs) in the Martian magnetosphere. We utilized medium‐frequency electric field measurements from October 2014 to December 2023 from the Mars Atmosphere and Volatile EvolutioN (MAVEN) spacecraft.
Sahil Pandey, Amar Kakad, Bharati Kakad
wiley   +1 more source

Magnetogravity Waves Bridge the Martian Atmosphere and Ionosphere

The Astrophysical Journal
Gravity waves (GWs) are essential to Martian atmospheric dynamics but are typically confined below ∼300 km due to viscous dissipation. Using MAVEN/NGIMS observations (2014–2022), we report persistent ion perturbations extending far beyond this ...
Jianping Huang, Si Liu, Fuliang Xiao, Jiapeng Guo, Xuanyun Zeng, Zhonglei Gao   +5 more
doaj   +1 more source

Physics‐Informed Neural Networks for Modeling the Martian Induced Magnetosphere

Geophysical Research Letters, Volume 53, Issue 11, 16 June 2026.
Abstract Understanding the magnetic field environment around Mars and its response to upstream solar wind conditions provide key insights into the processes driving atmospheric ion escape. To date, global models of Martian induced magnetosphere have been exclusively physics‐based, relying on computationally intensive simulations. For the first time, we
Jiawei Gao, Chuanfei Dong, Chi Zhang, Yilan Qin, Simin Shekarpaz, Xinmin Li, Liang Wang, Hongyang Zhou, Abigail Tadlock   +8 more
wiley   +1 more source

Design for stray-light reduction to a Martian ionospheric imager

Applied Optics, 2020
We demonstrate a new design high-contrast optics suitable for use on a stray-light reduction. Two-dimensional distribution of diffracted light was numerically analyzed and confirmed by a laboratory measurement to determine its characteristics. Laboratory measurements confirm stray-light performance with ∼
Hiromu, Nakagawa, Atsushi, Yamazaki, Keigo, Enya, Naofumi, Fujishiro, Naoki, Terada, Kanako, Seki   +5 more
openaire   +2 more sources

Terrestrial Analogs to Titan for Geophysical Research

Reviews of Geophysics, Volume 64, Issue 2, June 2026.
Abstract Saturn's moon Titan exhibits remarkable parallels to the Earth in many geophysical and geological processes not found elsewhere in the solar system at the present day. These include a nitrogen atmosphere with a condensible gas—methane—replacing the Earth's water, leading to an active meteorology with rainfall and surface manifestations ...
Conor A. Nixon, Samuel Birch, Audrey Chatain, Charles Cockell, Kendra K. Farnsworth, Peter M. Higgins, Stéphane Le Mouélic, Rosaly M. C. Lopes, Michael J. Malaska, Mohit Melwani Daswani, Kelly E. Miller, Catherine D. Neish, Olaf G. Podlaha, Jani Radebaugh, Lauren R. Schurmeier, Ashley Schoenfeld, Krista M. Soderlund, Anezina Solomonidou, Christophe Sotin, Nicholas A. Teanby, Tetsuya Tokano, Steven D. Vance   +21 more
wiley   +1 more source

Power Spectral Characteristics of Martian Ionospheric Irregularities

The Astrophysical Journal
The intrinsic magnetic field of a planet plays a key role in its ionospheric dynamics. Mars lacks a global magnetic field, thus ionospheric plasma is weakly coupled to crustal and induced magnetic field.
Chougule Prathmesh, Bharati Kakad, Amar Kakad   +2 more
doaj   +1 more source

Electrostatic Solitary Waves in Electronegative Martian Plasma

The Astrophysical Journal
The solar wind interacts with planetary magnetospheres, generating plasma waves in both the upstream region and the magnetospheric environment. Mars, lacking an inherent magnetic field, has an induced magnetosphere formed through solar wind interaction ...
Steffy Sara Varghese, Kuldeep Singh, Frank Verheest, Ioannis Kourakis   +3 more
doaj   +1 more source