Results 131 to 140 of about 109,917 (327)

Automatic Martian Polar Ice Cap Extraction Algorithm for Remote Sensing Data and Analysis of Their Spatiotemporal Variation Characteristics

Remote Sensing
The detection of Martian polar ice cap change patterns is important for understanding their effects on driving Mars’s global water cycle and for regulating atmospheric circulation.
Weiye Xu, Zhulin Chen, Huifang Zhang, Kun Jia, Degyi Yangzom, Xiang Zhao, Yunjun Yao, Xiaotong Zhang   +7 more
doaj   +1 more source

EFFECTS OF REDUCED OXYGEN TENSION ON VASCULAR PLANTS, IV. WINTER RYE GERMINATION UNDER NEAR-MARTIAN CONDITIONS AND IN OTHER NONTERRESTRIAL ENVIRONMENTS [PDF]

, 1962
S. M. Siegel, Lynn Rosen, C. Giumarro
openalex   +1 more source

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

The Vertical Temperature Distribution in the Martian Atmosphere [PDF]

, 1966
George Ohring, Joseph Mariano
openalex   +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

Spectroscopic study of the gas-cap radiation intensity for simulated martian atmospheric probes [PDF]

, 1968
W. Winovich
openalex   +1 more source

The Functions of the Martian Canals [PDF]

Nature, 1909
WITH reference to the recent paper by Dr. Pocklington before the Royal Society, on the functions of the Martian canals, a notice of which appeared in NATURE of November 11 (p. 58), I should like to suggest that these canals may perhaps be used for power-storage purposes.
openaire   +2 more sources

Water ice at low to midlatitudes on Mars

, 2011
In this paper, we analyze water ice occurrences at the surface of Mars using near-infrared observations, and we study their distribution with a climate model. Latitudes between 45{\deg}S and 50{\deg}N are considered.
Aharonson, Bibring, Bibring, Byrne, Carr, Carrozzo, Christensen, Christensen, Clifford, Costard, Dickson, Dickson, Dundas, Farrell, Feldman, Forget, Forget, Forget, François Forget, Haberle, Head, Hecht, Heldmann, Hourdin, Hourdin, John Mustard, Joshi, Joshi, Jouglet, Kieffer, Kossacki, Kreslavsky, Kreslavsky, Langevin, Langevin, Lemmon, Levrard, Madeleine, Malin, Mangold, Mathieu Vincendon, Mischna, Mohlmann, Montmessin, Morozova, Mustard, Neukum, Niles, Parente, Pavlov, Price, Putzig, Schmitt, Schon, Schorghofer, Schorghofer, Smith, Spiga, Spiga, Spinrad, Squyres, Vincendon, Vincendon, Vincendon, Vincendon, Williams, Williams, Zorzano   +67 more
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

Deriving IMF Properties From Mars Express Heavy Pickup Ion Measurements

Geophysical Research Letters, Volume 52, Issue 11, 16 June 2025.
Abstract We present Mars Express (MEX) observations of heavy pickup ions (HPUI) at Mars and a new method to derive interplanetary magnetic field (IMF) properties. The MEX HPUI measurements were organized using the upstream IMF directions measured by the Mars Atmosphere and Volatile EvolutioN (MAVEN) mission.
Yaxue Dong, Robin Ramstad, Matthew W. Davis, Mats Holmström, David A. Brain, Jared R. Espley, Shannon M. Curry   +6 more
wiley   +1 more source