Results 61 to 70 of about 35,748 (276)

Preliminary Investigation of the Ground-Water Resources of Baxter, Fulton, Izard and Sharp Counties, Arkansas [PDF]

open access: yes, 1980
One hundred and seventy-seven drillers\u27 well reports were used to investigate the groundwater resources of Baxter, Fulton, Izard, and Sharp counties. The most widely utilized aquifer zone is composed of the Cotter and Jefferson City dolomites.
Liebelt, Mike   +2 more
core   +2 more sources

Mass wasting triggered by seasonal CO2 sublimation under Martian atmospheric conditions: Laboratory experiments [PDF]

open access: yes, 2016
Sublimation is a recognized process by which planetary landscapes can be modified. However, interpretation of whether sublimation is involved in downslope movements on Mars and other bodies is restricted by a lack of empirical data to constrain this ...
Adam Barnes   +40 more
core   +3 more sources

Women in space: A review of known physiological adaptations and health perspectives

open access: yesExperimental Physiology, EarlyView.
Abstract Exposure to the spaceflight environment causes adaptations in most human physiological systems, many of which are thought to affect women differently from men. Since only 11.5% of astronauts worldwide have been female, these issues are largely understudied.
Millie Hughes‐Fulford   +4 more
wiley   +1 more source

Global mapping of iron and titanium oxides in the lunar megaregolith and subsurface [PDF]

open access: yes, 2007
[Abstract]: This paper reports mapping results obtained by remote sensing analysis of Iron and Titanium oxides in the megaregolith under the lunar Highlands regolith and in the subsurface under the Mare and South Pole Aitken basin regolith. FeO and TiO2
Carter, B. D., Jackson, Noel William
core   +2 more sources

The Sands of Phobos: The Martian moon's eccentric orbit refreshes its surface

open access: yes, 2018
The surface of the Martian moon Phobos exhibits two distinct geologic units, known as the red and blue units. The provenance of these regions is uncertain yet crucial to understanding the origin of the Martian moon and its interaction with the space ...
Ballouz, Ronald-Louis   +4 more
core   +1 more source

Oxychlorine Species on Mars: A Review

open access: yesReviews of Geophysics, Volume 63, Issue 4, December 2025.
Abstract Oxychlorine species (mainly perchlorate and chlorate) have been identified at multiple locations on the surface of Mars by both orbiter and in situ rovers. They have also been found in martian meteorites. Cl‐isotopes in meteoritic minerals suggest that an oxychlorine cycle has been operating on the martian surface for the last ∼4 billion years.
Kaushik Mitra
wiley   +1 more source

Scattering And Absorption of Light in Planetary Regoliths [PDF]

open access: yesJournal of Visualized Experiments, 2019
Theoretical, numerical, and experimental methods are presented for multiple scattering of light in macroscopic discrete random media of densely-packed microscopic particles. The theoretical and numerical methods constitute a framework of Radiative Transfer with Reciprocal Transactions (R2T2).
Peltoniemi Jouni   +15 more
openaire   +3 more sources

Investigating the Timescale of Weathering Signals Preserved in Marine Sediments—Insights From the Holocene Mediterranean

open access: yesGeophysical Research Letters, Volume 52, Issue 20, 28 October 2025.
Abstract The climate–weathering feedback exerts a vital role in long‐term planetary habitability. However, its operational timescales remain unclear due to challenges in quantifying past weathering intensity, especially in marine sediments—the final sink of continental weathering fluxes. Using Holocene Mediterranean sediments as a test case, we examine
Jiawang Wu   +9 more
wiley   +1 more source

The CM carbonaceous chondrite regolith Diepenveen [PDF]

open access: yesMeteoritics & Planetary Science, 2019
AbstractA carbonaceous chondrite was recovered immediately after the fall near the village of Diepenveen in the Netherlands on October 27, 1873, but came to light only in 2012. Analysis of sodium and poly‐aromatic hydrocarbon content suggests little contamination from handling.
Aaron S. Burton   +31 more
openaire   +6 more sources

Disentangling Continental Weathering During the Late Paleozoic Ice Age

open access: yesGeophysical Research Letters, Volume 52, Issue 19, 16 October 2025.
Abstract The consumption of atmospheric CO2 through continental weathering played a critical role in shaping the evolution of the late Paleozoic Ice Age (LPIA), presumably driven by the Hercynian orogeny and the evolution of terrestrial plants. However, the relative impacts of these two major drivers to continental weathering remain poorly constrained.
Biao Gao   +3 more
wiley   +1 more source

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