Specific surface area, density and microstructure of frost flowers
نویسندگان
چکیده
منابع مشابه
Sea ice, frost flowers and halogen activation
First-year sea-ice contact predicts bromine monoxide (BrO) levels better than potential frost flower contact W. R. Simpson, D. Carlson, G. Hoenninger1,2,†, T. A. Douglas, M. Sturm, D. Perovich, and U. Platt Geophysical Institute and Department of Chemistry, University of Alaska Fairbanks, Fairbanks, AK 99775-6160, USA Institute for Environmental Physics, University of Heidelberg, Im Neuenheimer...
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In the present investigation, γ-alumina nanoparticles with particle sizes less than 10 nm, high specific surface area (351 m2/g), high pore volumes and relatively narrow pore sizes distribution was prepared via sol-gel method in presence of aluminum isopropoxide as an aluminum precursor, distilled water, acetic acid as hydrolysis rate controller and tert-butanol as solvent. They had meso ...
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Abstract: the changes of BET surface area of a mineral substance during intensive grinding process. Validity of the proposedmodel was tested by the experiments performed using a natural chalcopyrite mineral as well as the published data. Itwas shown that the model can predict the experimental results with a very good accuracy and can be used to predictwhat may happen under the similar experimen...
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Microtomography can measure the X-ray attenuation coefficient in a 3-D volume of snow with a spatial resolution of a few microns. In order to extract quantitative characteristics of the microstructure, such as the specific surface area (SSA), from these data, the greyscale image first needs to be segmented into a binary image of ice and air. Different numerical algorithms can then be used to co...
متن کاملFrost flowers growing in the Arctic ocean-atmosphere–sea ice–snow interface: 2. Mercury exchange between the atmosphere, snow, and frost flowers
[1] Frost flowers are ice crystals that grow on refreezing sea ice leads in Polar Regions by wicking brine from the sea ice surface and accumulating vapor phase condensate. These crystals contain high concentrations of mercury (Hg) and are believed to be a source of reactive halogens, but their role in Hg cycling and impact on the fate of Hg deposited during atmospheric mercury depletion events...
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ژورنال
عنوان ژورنال: Geophysical Research Letters
سال: 2005
ISSN: 0094-8276
DOI: 10.1029/2005gl023245