Gas retention in fine-grained pyroclastic flow materials at high temperatures
نویسندگان
چکیده
منابع مشابه
Gas-mediated impact dynamics in fine-grained granular materials.
Noncohesive granular media exhibit complex responses to sudden impact that often differ from those of ordinary solids and liquids. We investigate how this response is mediated by the presence of interstitial gas between the grains. Using high-speed x-ray radiography we track the motion of a steel sphere through the interior of a bed of fine, loose granular material. We find a crossover from nea...
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Grain boundary motion may be accompanied with vacancy generation [1–4]. A typical case where a moving grain boundary produces vacancies is in primary recrystallisation, when the growth of a recrystallised grain at the cost of a grain with a large dislocation density involves release of excess free volume. Vacancies are also generated during grain growth, when the total volume of the grain bound...
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ژورنال
عنوان ژورنال: Bulletin of Volcanology
سال: 2007
ISSN: 0258-8900,1432-0819
DOI: 10.1007/s00445-007-0116-7