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Ice Issues, Porosity, and Snow Experiments for Dynamic NEO and Comet Modeling

FURNISH, M. D. ; REMO, J. L.

Annals of the New York Academy of Sciences, 1997-05, Vol.822 (1), p.566-582 [Periódico revisado por pares]

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Título:
Ice Issues, Porosity, and Snow Experiments for Dynamic NEO and Comet Modeling
Autor: FURNISH, M. D. ; REMO, J. L.
É parte de: Annals of the New York Academy of Sciences, 1997-05, Vol.822 (1), p.566-582
Notas: istex:D028C9A11F8F5278ED8B7A98D8E23A27292828A9
ark:/67375/WNG-JCCG53VS-0
ArticleID:NYAS566
Descrição: Category 0 NEO bodies, such as many comets, appear to be comprised largely of porous ice. Quasi‐static and dynamic properties of ice are expected to control the corresponding properties of Category 0 NEO material. These properties depend on temperature, strain rate, and possibly sample history. Corrections must be made for porosity and the presence of impurities such as silicates. These corrections reflect the added complexity of energy partitioning in a porous, inhomogeneous material as well as added P·ΔV work during compression. A study of the dymanic (shock) properties of natural snow over the stress range 0–4 GPa is described. Comparison of the results of this study with computational modeling suggests that existing ice models with introduced porosity are applicable in some regimes, while water models with introduced porosity provide better fidelity in other regimes.
Editor: Oxford, UK: Blackwell Publishing Ltd
Idioma: Inglês

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