Results 111 to 120 of about 722,187 (326)

Multidirectional Dune Dynamics Under Seasonal Winds on Mars

Geophysical Research Letters, Volume 52, Issue 12, 28 June 2025.
Abstract We present a systematic assessment of the complex aeolian bedforms across the western rim of Hellas Planitia, the largest impact basin on Mars. Repeat orbital imaging shows crescentic, transverse, and star dunes across the Hellespontus Montes region migrate, converge, and occasionally reverse course.
Matthew Chojnacki, David A. Vaz, Pruthviraj J. Acharya, Simone Silvestro, Isaac B. Smith   +4 more
wiley   +1 more source

A hybrid origin for the Martian atmosphere

Geochemical Perspectives Letters
The Martian isotopic record displays a dichotomy in volatile compositions. Interior volatiles from the mantle record a chondritic heritage (e.g., H, N, Kr, Xe) whereas the atmospheric reservoir of Kr and Xe - which do not currently experience escape - record heritage from a solar-like source.
Pahlevan, Kaveh, Schaefer, Laura, Porcelli, Don   +2 more
openaire   +2 more sources

Meteoroid Fragmentation in the Martian Atmosphere and the Formation of Crater Clusters. [PDF]

J Geophys Res Planets, 2022
Collins GS, Newland EL, Schwarz D, Coleman M, McMullan S, Daubar IJ, Miljković K, Neidhart T, Sansom E.   +8 more
europepmc   +1 more source

Ion Escape From Degenerate Induced Magnetospheres: The Case of Mars

Geophysical Research Letters, Volume 52, Issue 12, 28 June 2025.
Abstract When the cone angle of the interplanetary magnetic field (IMF) becomes small, induced magnetospheres of unmagnetized planets degenerate. Using hybrid simulations, we study ionospheric ion escape in a 4° cone angle case and compare it with the nominal 55° cone angle (Parker spiral) case. The total escape rate is 1.7×1025 $1.7\times 1{0}^{25}$ s−
Qi Zhang, Stas Barabash, Mats Holmström, Xiao‐dong Wang, Yoshifumi Futaana, Christopher M. Fowler, Robin Ramstad, Hans Nilsson   +7 more
wiley   +1 more source

Martian atmospheric Lee waves [PDF]

Icarus, 1976
Mariner 9 television pictures of Mars extensive mountain lee wave phenomenon in the northern mid-latitudes during winter were evaluated. The characteristic wave length of the lee waves is readily observable, and in a few cases the boundaries of the wave patterns, as well as the wave length, are observed.
openaire   +2 more sources

Mars 2020 Perseverance Rover Studies of the Martian Atmosphere Over Jezero From Pressure Measurements. [PDF]

J Geophys Res Planets, 2023
Sánchez-Lavega A, Del Rio-Gaztelurrutia T, Hueso R, Juárez MT, Martínez GM, Harri AM, Genzer M, Hieta M, Polkko J, Rodríguez-Manfredi JA, Lemmon MT, Pla-García J, Toledo D, Vicente-Retortillo A, Viúdez-Moreiras D, Munguira A, Tamppari LK, Newman C, Gómez-Elvira J, Guzewich S, Bertrand T, Apéstigue V, Arruego I, Wolff M, Banfield D, Jaakonaho I, Mäkinen T.   +26 more
europepmc   +1 more source

Mariner 4 and the atmosphere of Mars [PDF]

Interpretation of data on Martian atmosphere obtained from Mariner
Johnson, F. S.
core   +1 more source

Instantaneous Radiative Effect of Surface Longwave Spectral Emissivity in a Snowball Earth Simulation

Journal of Geophysical Research: Atmospheres, Volume 130, Issue 12, 28 June 2025.
Abstract Spectrally dependent emission by the surface (i.e., surface spectral emissivity) is commonly ignored by current climate models. Surface spectral emissivity matters more in cold and dry environments than in hot and humid environments. Recent modeling studies confirmed that, for current climate simulations, this process affects the polar climate
Daniel S. Zetterberg, Xianglei Huang, Johannes Hörner, Aiko Voigt, Xiuhong Chen   +4 more
wiley   +1 more source

Assimilation of Both Column- and Layer-Integrated Dust Opacity Observations in the Martian Atmosphere. [PDF]

Earth Space Sci, 2021
Ruan T, Young RMB, Lewis SR, Montabone L, Valeanu A, Read PL.   +5 more
europepmc   +1 more source

Evaluation of thermal insulation materials [PDF]

, 1973
Data was obtained on silicone-bonded fiberglass, isocyanurate foam, and two dozen other insulators. Materials were selected to withstand heat sterilization, outer space, and the Martian atmosphere.
Conti, J. C., Mcgee, J. V., Mcpherson, J. I., Wilbers, O. J.   +3 more
core   +1 more source