Experiments on ice spikes and a simple growth model
| Autor: | Russell D. Sampson, Lesley Hill, Edward P. Lozowski |
|---|---|
| Rok vydání: | 2004 |
| Předmět: |
010506 paleontology
SIMPLE (dark matter experiment) 010504 meteorology & atmospheric sciences Mineralogy Growth model Heat transfer coefficient Atmospheric sciences 01 natural sciences Tap water Distilled water Scientific method Growth rate Conservation of mass Geology 0105 earth and related environmental sciences Earth-Surface Processes |
| Zdroj: | Journal of Glaciology. 50:375-381 |
| ISSN: | 1727-5652 0022-1430 |
| Popis: | Ice-spike observations in nature have sparked much interest in the scientific and non-scientific communities alike, yet most research performed thus far has been largely qualitative. We have conducted a quantitative, systematic laboratory investigation in order to assess theories explaining ice-spike growth and to determine the conditions conducive to it. We observed ice-spike growth using time-lapse digital photography, using two water types in two different containers. We observed that ice spikes occurred much more frequently in distilled water than in tap water. Digital images were analyzed to determine the growth rate of the ice spikes. Water temperature was recorded throughout the freezing process, and the cooling rate was used to estimate a bulk heat transfer coefficient. Finally, a simple model, based on mass conservation, was derived and was found to give useful predictions of ice-spike growth rate. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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