Results 11 to 20 of about 35,386 (281)

Presence and detection of carbonates on the Martian surface [PDF]

Journal of Geophysical Research: Planets, 2001
The messages we receive from Mars about the presence of carbonates are quite contradictory. On the one hand, images of the planet clearly show the signatures of past bodies of standing water, where the accumulation of sedimentary deposits should have occurred.
FONTI S., JUREWICZ A., BLANCO A., BLECKA M. I., OROFINO, Vincenzo   +4 more
openaire   +6 more sources

Martian sub-surface ionising radiation: biosignatures and geology [PDF]

Biogeosciences, 2007
The surface of Mars, unshielded by thick atmosphere or global magnetic field, is exposed to high levels of cosmic radiation. This ionising radiation field is deleterious to the survival of dormant cells or spores and the persistence of molecular ...
J. M. Ward, L. Desorgher, L. R. Dartnell, A. J. Coates   +3 more
doaj   +4 more sources

DepthFormer: Depth‐Enhanced Transformer Network for Semantic Segmentation of the Martian Surface From Rover Images

Earth and Space Science
The Martian surface, with its diverse landforms that reflect the planet's evolution, has attracted increasing scientific interest. While extensive data is needed for interpretation, identifying landform types is crucial. This semantic information reveals
Yuan Ma, Zhaojin Li, Bo Wu, Ran Duan
doaj   +2 more sources

High-Salinity Fluid Downslope Flow on Regolith Layer Examined by Laboratory Experiment: Implications for Recurring Slope Lineae on Martian Surfaces

Fluids
Numerous dark linear recurrent features called Recurring Slope Lineae (RSL) are observed on Martian surfaces, hypothesized as footprints of high-salinity liquid flow. This paper experimentally examined this “wet hypothesis” by analyzing the aspect ratios
Yoshiki Tabuchi, Arata Kioka, Takeshi Tsuji, Yasuhiro Yamada   +3 more
doaj   +2 more sources

The color of the Martian sky and its influence on the illumination of the Martian surface [PDF]

Journal of Geophysical Research: Planets, 1999
The dust in the atmosphere above the Mars Pathfinder landing site produced a bright, red sky that increases in redness toward the horizon at midday. There is also evidence for an absorption band in the scattered light from the sky at 860 nm. A model of the sky brightness has been developed [Markiewicz et al., this issue] and tested against Imager for ...
H. U. Keller, Pete Smith, N. Thomas, R. J. Reid, W. J. Markiewicz, R. M. Sablotny, Jeffrey R. Johnson, M. W. Wuttke   +7 more
openaire   +4 more sources

Time and Length Scales of the Martian Atmospheric Turbulence as Observed by the InSight Lander

Geophysical Research Letters
We provide a statistical analysis of the Martian near‐surface atmospheric turbulence based on in situ wind observations from NASA's InSight lander. We focus on the variations in length and time scales of the Martian atmospheric turbulence caused by the ...
Orkun Temel, Ozgur Karatekin
doaj   +2 more sources

Martian moons exploration MMX: sample return mission to Phobos elucidating formation processes of habitable planets

Earth, Planets and Space, 2022
Martian moons exploration, MMX, is the new sample return mission planned by the Japan Aerospace Exploration Agency (JAXA) targeting the two Martian moons with the scheduled launch in 2024 and return to the Earth in 2029.
Kiyoshi Kuramoto, Yasuhiro Kawakatsu, Masaki Fujimoto, Akito Araya, Maria Antonietta Barucci, Hidenori Genda, Naru Hirata, Hitoshi Ikeda, Takeshi Imamura, Jörn Helbert, Shingo Kameda, Masanori Kobayashi, Hiroki Kusano, David J. Lawrence, Koji Matsumoto, Patrick Michel, Hideaki Miyamoto, Tomokatsu Morota, Hiromu Nakagawa, Tomoki Nakamura, Kazunori Ogawa, Hisashi Otake, Masanobu Ozaki, Sara Russell, Sho Sasaki, Hirotaka Sawada, Hiroki Senshu, Shogo Tachibana, Naoki Terada, Stephan Ulamec, Tomohiro Usui, Koji Wada, Sei-ichiro Watanabe, Shoichiro Yokota   +33 more
doaj   +1 more source

Temporal analysis of all high-resolution Mars imaging products [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2014
A meta-data analysis has been performed of high-resolution imagery that have been acquired over the last four decades from Mars. More specifically, we are interested in two independent image parameters, the time that each image was acquired and the ...
P. Sidiropoulos, J.-P. Muller
doaj   +1 more source

Structure Along the Martian Dichotomy Constrained by Rayleigh and Love Waves and Their Overtones

Geophysical Research Letters, 2023
Using seismic recordings of event S1222a, we measure dispersion curves of Rayleigh and Love waves, including their first overtones, and invert these for shear velocity (VS) and radial anisotropic structure of the Martian crust.
D. Kim, S. C. Stähler, S. Ceylan, V. Lekic, R. Maguire, G. Zenhäusern, J. Clinton, D. Giardini, A. Khan, M. P. Panning, P. Davis, M. Wieczorek, N. Schmerr, P. Lognonné, W. B. Banerdt   +14 more
doaj   +1 more source

New Martian Dust Simulant JMDS‐1 and Applications to Laboratory Thermal Conductivity Measurements

Earth and Space Science, 2022
Martian dust simulant (i.e., a terrestrial substitute for Martian dust) is the basis for experimentally investigating the properties of Martian dust and its effects on Mars exploration activities.
Wen Yu, Xiaojia Zeng, Xiongyao Li, Guangfei Wei, Jichao Fang   +4 more
doaj   +1 more source