Results 1 to 10 of about 18,041 (209)

Reconstruction of eolian bed forms and paleocurrents from cross-bedded strata at Victoria Crater, Meridiani Planum, Mars [PDF]

open access: yes, 2011
Outcrop exposures imaged by the Opportunity rover at Victoria Crater, a 750 m diameter crater in Meridiani Planum, are used to delineate sedimentary structures and further develop a dune-interdune depositional model for the region.
Edgar, L. A.   +5 more
core   +1 more source

Inland extent of the Weddell Sea Rift imaged by new aerogeophysical data [PDF]

open access: yes, 2012
Peer ...
Bingham, Robert George   +8 more
core   +1 more source

Origin and significance of 'dispersed facies' basal ice: Svínafellsjökull, Iceland [PDF]

open access: yes, 2010
Dispersed facies basal ice - massive (i.e. structureless) ice with dispersed debris aggregates - is present at the margins of many glaciers and, as a product of internal glacial processes, has the potential to provide important information about the ...
Darrel A. Swift   +10 more
core   +3 more sources

Sulfate-rich eolian and wet interdune deposits, Erebus crater, Meridiani Planum, Mars [PDF]

open access: yes, 2009
This study investigates three bedrock exposures at Erebus crater, an ~ 300 m diameter crater approximately 4 km south of Endurance crater on Mars. These outcrops, called Olympia, Payson, and Yavapai, provide additional evidence in support of the dune ...
Bell, James F., III   +5 more
core   +1 more source

On mapping seafloor mineral deposits with central loop transient electromagnetics [PDF]

open access: yes, 2012
Electromagnetic methods are commonly employed in exploration for land-based mineral deposits. A suite of airborne, land, and borehole electromagnetic techniques consisting of different coil and dipole configurations have been developed over the last few ...
Abramowitz M.   +13 more
core   +1 more source

CO2 plume evolution in a depleted natural gas reservoir: Modeling of conformance uncertainty reduction over time [PDF]

open access: yes, 2020
Uncertainty in the long-term fate of CO2 injected for geologic carbon sequestration (GCS) is a significant barrier to the adoption of GCS as a greenhouse-gas emission-mitigation for industry and regulatory agencies alike. We present a modeling study that
Doughty, C, Oldenburg, CM
core   +1 more source

Pushing the Limits of 3D Color Printing: Error Diffusion with Translucent Materials

open access: yes, 2015
Accurate color reproduction is important in many applications of 3D printing, from design prototypes to 3D color copies or portraits. Although full color is available via other technologies, multi-jet printers have greater potential for graphical 3D ...
Arikan, Can Ates   +2 more
core   +1 more source

Band alignment at metal/ferroelectric interfaces: insights and artifacts from first principles [PDF]

open access: yes, 2011
Based on recent advances in first-principles theory, we develop a general model of the band offset at metal/ferroelectric interfaces. We show that, depending on the polarization of the film, a pathological regime might occur where the metallic carriers ...
C. H. Peng   +7 more
core   +3 more sources

Seismic reflectivity of a carbon dioxide flux [PDF]

open access: yes, 2012
 In the context of the geological storage of carbon dioxide (CO2), thecharacterization of the injected CO2 in a reservoir is of primeimportance for volume capacity evaluation and long-term siteperformance.
Gómez, Julián Luis   +1 more
core   +1 more source

Ab Initio Calculation of Impurity Effects in Copper Oxide Materials [PDF]

open access: yes, 2005
We describe a method for calculating, within density functional theory, the electronic structure associated with typical defects which substitute for Cu in the CuO2 planes of high-Tc superconducting materials. The focus is primarily on Bi2Sr2CaCu2O8, the
D. Vanderbilt   +9 more
core   +1 more source

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