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Title: Quantitative study of the metamorphism of snow crystals by sublimation = Yuki no kesshō no shōka henkei ni tsuite no teiryō-teki kosatsu
Authors: Yosida, Zyungo
Keywords: Snow
Snow crystals
Snow metamorphism
Mathematical analysis
Publisher: U.S. Army Snow, Ice, and Permafrost Research Establishment.
Engineer Research and Development Center (U.S.)
Description: Technical report
Summary: The smoothing of snow-crystal surfaces and evaporative thinning of dendritic snow-crystal branches in the attachment regions during metamorphism are analyzed mathematically. The analysis indicates that vapor-tension differences responsible for thinning and smoothing are not due to curvatures nor to elastic stresses in single crystals. A value of less than 1 hr. was calculated for the time required for elastic stresses to act on a rod-like ice crystal 0.1 mm in diameter and 0.35 mm long standing on edge in a layer of similar crystals 0.3 gm./cc. in density and 40 cm. thick projecting 50 cm horizontally over an edge. Elastic stress is effective only on ice grains of small diameter, since its effect reduces rapidly with increasing grain diameter.
Rights: Approved for public release; distribution is unlimited.
Appears in Collections:Translation

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