Results 21 to 30 of about 34,777 (278)

Mineralogical characterization of Martian Jezero crater from MRO CRISM hyperspectral images [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2014
Martian mineral detection and mapping can provide important information and constraints on Martian aqueous history, which can be used to assess the potential habitability of Mars.
S. Jin, Y. Yang
doaj   +1 more source

Experimental Investigation of the Atmosphere-Regolith Water Cycle on Present-Day Mars

open access: yesSensors, 2021
The water content of the upper layers of the surface of Mars is not yet quantified. Laboratory simulations are the only feasible way to investigate this in a controlled way on Earth, and then compare it with remote and in situ observations of spacecrafts
Abhilash Vakkada Ramachandran   +2 more
doaj   +1 more source

Optical Constants of Martian Dust Analogs at UV–Visible–Near-infrared Wavelengths

open access: yesThe Astrophysical Journal Supplement Series, 2023
We present an advanced light-scattering model to retrieve the optical constants of three Martian dust analogs: Johnson Space Center regolith simulant, Enhanced Mojave Mars Simulant, and Mars Global Simulant.
Julia Martikainen   +9 more
doaj   +1 more source

Quantification of Carbonates, Oxychlorines, and Chlorine Generated by Heterogeneous Electrochemistry Induced by Martian Dust Activity

open access: yesGeophysical Research Letters, 2023
Heterogeneous electrochemistry induced by Martian dust activity is an important type of atmosphere‐surface interaction that affects geochemical processes at the Martian surface and in the Martian atmosphere.
Alian Wang   +6 more
doaj   +1 more source

Modeling the variations of Dose Rate measured by RAD during the first MSL Martian year: 2012-2014 [PDF]

open access: yes, 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.
Appel, Jan K.   +17 more
core   +2 more sources

Perchlorates on Mars enhance the bacteriocidal effects of UV light

open access: yesScientific Reports, 2017
Perchlorates have been identified on the surface of Mars. This has prompted speculation of what their influence would be on habitability. We show that when irradiated with a simulated Martian UV flux, perchlorates become bacteriocidal.
Jennifer Wadsworth, Charles S. Cockell
doaj   +1 more source

Microbial growth in actual martian regolith in the form of Mars meteorite EETA79001

open access: yesCommunications Earth & Environment, 2023
Studies to understand the growth of organisms on Mars are hampered by the use of simulants to duplicate martian mineralogy and chemistry. Even though such materials are improving, no terrestrial simulant can replace a real martian sample.
Neveda Naz   +3 more
doaj   +1 more source

A GRADIENT-REGION CONSTRAINED LEVEL SET METHOD FOR AUTONOMOUS ROCK DETECTION FROM MARS ROVER IMAGE [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2019
Rocks are one of the major Martian surface features and yield significant information about the relevant geology process and the life exploration. However, autonomous Martian rock detection is still a challenging task due to the appearance similar to the
J. Yang, Z. Kang
doaj   +1 more source

Validation of dMEREM, the Detailed Mars Energetic Radiation Environment Model, with RAD Data from the Surface of Mars

open access: yesFrontiers in Astronomy and Space Sciences, 2022
The detailed Martian Energetic Radiation Environment Model (dMEREM) is a Geant4 based model developed for the European Space Agency, which enables to predict the radiation environment expected at different locations on the Martian orbit, atmosphere and ...
Patrícia Gonçalves   +3 more
doaj   +1 more source

Solar radiation incident on the Martian surface [PDF]

open access: yesJournal of Molecular Evolution, 1979
Calculations indicate that the maximum daily solar radiation reaching the Martian surface is about 325 cal/cm2 during southern hemisphere summer at latitude of about 40 degrees S. In the ultraviolet region of the spectrum, the radiation reaching the surface at wavelengths greater than 2800 A is within 10% of the radiation incident on the atmosphere ...
Atreya, Sushil K., Kuhn, William R.
openaire   +4 more sources

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