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| Titel |
Numerical simulation of formation and preservation of Ningwu ice cave, Shanxi, China |
| VerfasserIn |
S. Yang, Y. Shi |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1994-0416
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| Digitales Dokument |
URL |
| Erschienen |
In: The Cryosphere ; 9, no. 5 ; Nr. 9, no. 5 (2015-10-22), S.1983-1993 |
| Datensatznummer |
250116861
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| Publikation (Nr.) |
 copernicus.org/tc-9-1983-2015.pdf |
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| Zusammenfassung |
| Ice caves exist in locations where annual average air temperature is higher than 0 °C. An example is Ningwu
ice cave, Shanxi Province, the largest ice cave in China. In order to
quantitatively investigate the mechanism of formation and preservation of
the ice cave, we use the finite-element method to simulate the heat transfer
process at this ice cave. There are two major control factors. First, there
is the seasonal asymmetric heat transfer. Heat is transferred into the ice
cave from outside very inefficiently by conduction in spring, summer and
fall. In winter, thermal convection occurs that transfers heat very
efficiently out of the ice cave, thus cooling it down. Secondly, ice–water
phase change provides a heat barrier for heat transfer into the cave in
summer. The calculation also helps to evaluate effects of global warming,
tourists, colored lights, climatic conditions, etc. for sustainable
development of the ice cave as a tourism resource. In some other ice caves in
China, managers have installed airtight doors at these ice caves' entrances
with the intention of "protecting" these caves, but this in fact prevents cooling in winter and
these cave ices will entirely melt within tens of years. |
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