Competition between grain growth and grain-size reduction in polar ice
نویسندگان
چکیده
منابع مشابه
Deformation of grain boundaries in polar ice
– The ice microstructure (grain boundaries) is a key feature used to study ice evolution and to investigate past climatic changes. We studied a deep ice core, in Dome Concordia, Antarctica, which records past mechanical deformations. We measured a “texture tensor” which characterizes the pattern geometry and reveals local heterogeneities of deformation along the core. These results question key...
متن کاملThe Relevance of Grain Dissection for Grain Size Reduction in Polar Ice: Insights from Numerical Models and Ice Core Microstructure Analysis
Citation: Steinbach F, Kuiper E-JN, Eichler J, Bons PD, Drury MR, Griera A, Pennock GM and Weikusat I (2017) The Relevance of Grain Dissection for Grain Size Reduction in Polar Ice: Insights from Numerical Models and Ice Core Microstructure Analysis. Front. Earth Sci. 5:66. doi: 10.3389/feart.2017.00066 The Relevance of Grain Dissection for Grain Size Reduction in Polar Ice: Insights from Numer...
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The history and dynamics of the martian polar deposits (MPD), the largest known water reservoirs on Mars, are of great interest, but estimates of ice grain size are required before detailed modeling can be performed. We clarify the microphysical processes that may control grain size in the MPD. If the MPD are ∼2% dust by mass, the maximum ice grain size is ∼1 mm due to grain boundary pinning by...
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INTRODUCTION Cereal grains generally are the primary source of energy in feedlot diets. Availability of energy from the grain depends largely on the type of grain used as well processing of that grain (Owens et al., 1997). A variety of grain processing techniques are used including grinding, steam flaking, and compiling high moisture corn to ferment. Each processing method differs in its nutrit...
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ژورنال
عنوان ژورنال: Journal of Glaciology
سال: 2011
ISSN: 0022-1430,1727-5652
DOI: 10.3189/002214311798043690