期刊
CRYOSPHERE
卷 6, 期 2, 页码 517-531出版社
COPERNICUS GESELLSCHAFT MBH
DOI: 10.5194/tc-6-517-2012
关键词
-
资金
- DFG [HA3475/3-1]
- University of Fribourg, Switzerland
Compared to lowland (polar) regions, permafrost in high mountain areas occurs in a large variety of surface and subsurface materials and textures. This work presents an eight-year (2002-2010) data set of borehole temperatures for five different (sub-) surface materials from a high alpine permafrost area, MurtSl-Corvatsch, Switzerland. The influence of the material on the thermal regime was investigated by borehole temperature data, the temperature at the top of the permafrost (TTOP-concept) and the apparent thermal diffusivity (ATD). The results show that during the last eight years, material-specific temperature changes were more significant than climate-induced temperature trends. At coarse blocky, ice-rich sites, no changes in active layer depth were observed, whereas the bedrock and the fine-grained sites appear to be highly sensitive to changes in the microclimate. The results confirm that the presence and growth of ice as well as a thermally driven air circulation within the subsurface are the key factors for the occurence and preservation of alpine permafrost.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据