Results 1 to 10 of about 186,384 (251)
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 +3 more
doaj +12 more sources
Diurnal and Seasonal Mapping of Martian Ices With EMIRS [PDF]
Geophysical Research Letters, 2023 Condensation and sublimation of ices at the surface of the planet is a key part of both the Martian H2O and CO2 cycles, either from a seasonal or diurnal aspect.
Aurélien Stcherbinine +10 more
doaj +2 more sources
Spatial Autocorrelation of Martian Surface Temperature and Its Spatio-Temporal Relationships with Near-Surface Environmental Factors across China’s Tianwen-1 Landing Zone [PDF]
Remote Sensing, 2021 Variations in the Martian surface temperature indicate patterns of surface energy exchange. The Martian surface temperature at a location is similar to those in adjacent locations; but, an understanding of temperature clusters in multiple locations will ...
Yaowen Luo, Jianguo Yan, Fei Li, Bo Li
doaj +2 more sources
A Thermal Plume Model for the Martian Convective Boundary Layer [PDF]
Journal of Geophysical Research: Planets. Volume 118, Issue 7,
pages 1468-1487, July 2013, 2013 The Martian Planetary Boundary Layer [PBL] is a crucial component of the Martian climate system. Global Climate Models [GCMs] and Mesoscale Models [MMs] lack the resolution to predict PBL mixing which is therefore parameterized. Here we propose to adapt the "thermal plume" model, recently developed for Earth climate modeling, to Martian GCMs, MMs, and ...
Colaïtis, Arnaud +5 more
arxiv +5 more sources
Unleashing the Potential of Reconfigurable Intelligent Surfaces in Martian Communication [PDF]
arXiv, 2023 Space exploration has witnessed a steady increase since the 1960s, with Mars playing a significant role in our quest for further knowledge. As the ambition to colonize Mars becomes a reality through the collaboration of private companies and space agencies, the need for reliable and robust communication infrastructures in the Martian environment ...
Enes Koktas +3 more
arxiv +3 more sources
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.
S. Fonti +4 more
openalex +6 more sources
Modeling the variations of Dose Rate measured by RAD during the first MSL Martian year: 2012-2014 [PDF]
, 2015 The Radiation Assessment Detector (RAD), on board Mars Science Laboratory's (MSL) rover Curiosity, measures the {energy spectra} of both energetic charged and neutral particles along with the radiation dose rate at the surface of Mars. With these first-ever measurements on the Martian surface, RAD observed several effects influencing the galactic ...
Appel, Jan K. +17 more
arxiv +4 more sources
Acoustic environment of the Martian surface [PDF]
Journal of Geophysical Research: Planets, 2001 Prompted by the Mars Microphone aboard the 1998 Mars Polar Lander, a theoretical study of the acoustical environment of the Martian surface has been made to ascertain how the propagation of sound is attenuated under such conditions and to predict what sounds may be detectable by a microphone. Viscous and thermal relaxation (termed classical absorption),
J. P. Williams
openalex +3 more sources
Dependence of the Martian radiation environment on atmospheric depth: Modeling and measurement [PDF]
, 2017 The energetic particle environment on the Martian surface is influenced by solar and heliospheric modulation and changes in the local atmospheric pressure (or column depth). The Radiation Assessment Detector (RAD) on board the Mars Science Laboratory rover Curiosity on the surface of Mars has been measuring this effect for over four Earth years (about ...
Badavi, Francis F. +11 more
arxiv +5 more sources
Martian Surface Coordinates [PDF]
Journal of Geophysical Research, 1973 This paper presents methods and results for primary and secondary triangulation of the Martian surface. The primary network is based on multiphotograph stereophotogrammetry in which the pictures are rotated around fixed centers; these centers are provided as spacecraft stations from the tracking data.
Merton E. Davies, D. Arthur
openalex +2 more sources