期刊
PERMAFROST AND PERIGLACIAL PROCESSES
卷 27, 期 3, 页码 307-315出版社
WILEY
DOI: 10.1002/ppp.1871
关键词
active-layer; ground temperature; snow cover; air temperature; Antarctic Peninsula; active layer thickness
资金
- Masaryk University [MUNI/A/0952/2013]
The response of active-layer thickness and the ground thermal regime to climatic conditions on the Ulu Peninsula (James Ross Island, northeastern Antarctic Peninsula) in 2011-13 is presented. The mean air temperature over this period was -8.0 degrees C and ground temperature at 5cm depth varied from -6.4 degrees C (2011-12) to -6.7 degrees C (2012-13). The active-layer thickness ranged between 58cm (January 2012) and 52cm (February 2013). Correlation analyses indicate that air temperature affects ground temperature more significantly on snow-free days (R-2=0.82) than on snow cover days (R-2=0.53). Although the effect of snow cover on the daily amplitude of ground temperature was observable to 20cm depth, the overall influence of snow depth on ground temperature was negligible (freezing n-factor of 0.95-0.97). Copyright (c) 2015 John Wiley & Sons, Ltd.
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