Results 171 to 180 of about 76,454 (246)

Spatial and Temporal Extent of Plasma Depletion Events in the Ionosphere of Mars

Journal of Geophysical Research: Planets, Volume 130, Issue 10, October 2025.
Abstract The Mars Atmosphere and Volatile Evolution (MAVEN) spacecraft has detected as many as 1,125 plasma depletion events (PDEs) in the Martian ionosphere from October 2014 to May 2021. PDEs, characterized by significantly reduced plasma density, elevated electron temperatures, and increased electrostatic fluctuations, remain poorly understood in ...
Praveen Basuvaraj, František Němec, Christopher M. Fowler, Leonardo H. Regoli, Zdeněk Němeček, Jana Šafránková, Olivier Witasse, Colin F. Wilson   +7 more
wiley   +1 more source

Photovoltaic array for Martian surface power [PDF]

Missions to Mars will require electric power. A leading candidate for providing power is solar power produced by photovoltaic arrays. To design such a power system, detailed information on solar-radiation availability on the Martian surface is necessary.
Appelbaum, J., Landis, G. A.
core   +1 more source

Martian canyons and African rifts: Structural comparisons and implications [PDF]

, 1979
Herbert Frey
openalex   +1 more source

Ancient Mars Climate With a Polar Ocean and Ice Sheet Dynamics

Journal of Geophysical Research: Planets, Volume 130, Issue 10, October 2025.
Abstract In this article, we study the conditions required to maintain a stable ocean on Mars 3 Ga using a new suite of simulations. These simulations couple a 3D Global Climate Model with ocean dynamics and ice sheet flow. The model includes the main processes of the atmosphere/hydrosphere/cryosphere to investigate Mars' ancient climate.
Frédéric Schmidt, Michael J. Way, Aurélien Quiquet, Igor Aleinov, Christophe Dumas   +4 more
wiley   +1 more source

A Model of a Martian Great Dust Storm [PDF]

, 1973
P. J. Gierasch, R. M. Goody
openalex   +1 more source

Laboratory Investigations of Flow Dynamics and Volume Growth During Erosion of Different Substrates by CO2 ${\text{CO}}_{2}$‐Driven Granular Flows in Martian Gullies

Journal of Geophysical Research: Planets, Volume 130, Issue 10, October 2025.
Abstract Gullies are actively changing landforms on planet Mars. The prevailing hypothesis, supported by a suite of different studies, states that present‐day activity in these gullies is caused by fluidized granular flows driven by the sublimation of seasonal CO2 ${\text{CO}}_{2}$ ice.
Lonneke Roelofs, Susan J. Conway, Bas van Dam, Arjan van Eijk, Jonathan P. Merrison, Jens Jacob Iversen, Henk Markies, Marcel van Maarseveen, Tjalling de Haas   +8 more
wiley   +1 more source

Photocatalytic Production of Organic Compounds from CO and H ₂ O in a Simulated Martian Atmosphere [PDF]

, 1971
Jerry S. Hubbard, James Hardy, N. H. Horowitz   +2 more
openalex   +1 more source

Spatial Variation of Rise Time and Dwell Time Induced by a Hypervelocity Impact

Journal of Geophysical Research: Planets, Volume 130, Issue 10, October 2025.
Abstract The passage of a shock wave and the following release or rarefaction wave determine the dwell time, how long material remains at high pressure, as a result of a hypervelocity impact. Impact simulations show that the dwell time of high‐velocity ejecta exhibits substantial spatial variation.
Sowon Lee, B. C. Johnson
wiley   +1 more source

An Analytical and Numerical Study of the Martian Planetary Boundary Layer Over Slopes [PDF]

, 1973
Steven L. Blumsack, P. J. Gierasch, W. Roy Wessel   +2 more
openalex   +1 more source

Diurnal Temperature Variations and Migrating Thermal Tides in the Martian Lower Atmosphere Observed by the Emirates Mars InfraRed Spectrometer

Journal of Geophysical Research: Planets, Volume 130, Issue 10, October 2025.
Abstract The Martian atmosphere experiences large diurnal variations due to the ∼24.6 hr planetary rotation and its low heat capacity. Understanding such variations on a planetary scale is limited due to the lack of observations, which are greatly addressed with the recent advent of the Emirates Mars Mission (EMM).
Siteng Fan, François Forget, Michael D. Smith, R. John Wilson, Sandrine Guerlet, Khalid M. Badri, Samuel A. Atwood, Roland M. B. Young, Christopher S. Edwards, Philip R. Christensen, Justin Deighan, Hessa R. Al Matroushi, Antoine Bierjon, Jiandong Liu, Ehouarn Millour   +14 more
wiley   +1 more source