Results 31 to 40 of about 232,915 (212)
CHEMISTRY OF ANTARCTIC SNOW AND ICE [PDF]
Le Journal de Physique Colloques, 1987 We have studied 1000 samples of snow and ice from East and West Antarctica (coastal as well as central areas). These samples cover different time periods up to 30,000 years B.P.. In the meltwater, we have measured major ions (i.e. Na+, NH4+, K+, Ca++, Mg++, H+, Cl-, NO3-, and SO4--) using stringent contamination free tehniques.
openaire +1 more source
Journal of Glaciology, 2018 The stable oxygen isotope composition, major ions and isotopic compositions of strontium (Sr), neodymium (Nd) and lead (Pb) in insoluble dust from recent surface snow samples along the transect from the Zhongshan and Progress stations (located on the ...
ZHIHENG DU +3 more
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Parameterization of atmosphere–surface exchange of CO2 over sea ice [PDF]
The Cryosphere, 2014 We suggest the application of a flux parameterization commonly used over terrestrial areas for calculation of CO2 fluxes over sea ice surfaces. The parameterization is based on resistance analogy.
L. L. Sørensen +8 more
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Salinity impact on water flow and lake ice in Lake Vostok, Antarctica [PDF]
, 2003 Lake Vostok, isolated from direct exchange with the atmosphere for million years, provides a unique and so far inaccessible habitat. By using a numerical model, and recent lake geometry information, the lake circulation was investigated for different ...
Mayer, Christoph +7 more
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The effects of Ca++ on the strength of polycrystalline ice
Journal of Glaciology, 2016 Recent studies have suggested a physical link between Ca++ ions and an increase in the ductility or ‘softening’ of polycrystalline ice. In order to investigate the potential effects of Ca++ on deformation, we created sets of both undoped and CaSO4-doped ...
KEVIN HAMMONDS, IAN BAKER
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The role of organic aerosols in homogeneous ice formation
, 2004 Kärcher B, Koop T. The role of organic aerosols in homogeneous ice formation. ATMOSPHERIC CHEMISTRY AND PHYSICS. 2005;5(3):703-714.Recent field observations suggest that the fraction of organic-containing aerosol particles in ice cloud particles is ...
Kärcher, B +5 more
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Homogeneous ice nucleation rates for mW and TIP4P/ICE models through Lattice Mold calculations
, 2022 Water freezing is the most common liquid-to-crystal phase transition on Earth, however, despite its critical implications on climate change and cryopreservation among other disciplines, its characterization through experimental and computational ...
Carlos, Vega +6 more
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Frontiers in Astronomy and Space Sciences, 2022 Heterogeneous radical processes on ice surfaces play a vital role in the formation of building blocks of the biologically relevant molecules in space. Therefore, quantitative mechanistic details of the radical binding and radical reactions on ices are ...
W. M. C. Sameera +9 more
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Neutron diffraction and NMR relaxation studies of structural variation and phase transformations for water/ice in SBA-15 silica: I. The over-filled case [PDF]
, 2006 Neutron diffraction and NMR relaxation measurements have been made of water/ice in SBA-15, a mesoporous silica constituting an ordered array of cylindrical mesopores of pore diameter similar to 86 angstrom, over the temperature range 180-300 K in a ...
Webber, J. Beau W. +18 more
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Frontiers in Earth Science, 2021 Biotracers marking the geologic history and permafrost evolution in Central Yakutia, including Yedoma Ice Complex (IC) deposits, were identified in a multiproxy analysis of water chemistry, isotopic signatures, and microbial datasets.
M. Yu. Cherbunina +11 more
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