Quantitative assessment of permafrost degradation using coupled geophysical and thermal monitoring systems

在提议的项目中，重复地球物理测量应使用来评估山地永久冻土对气候引起的变暖的敏感性。与热监测相比，地球物理和热综合评估冻土演变的方法能够识别地面冰的退化或恶化。将两种互补的地球物理方法结合起来，就有可能量化地冰含量。山地永久冻土对气候变化的敏感性将利用来自较短时间尺度的极端大气强迫事件的高时间分辨率数据集进行评估，例如2003年异常炎热的夏季，或2006年7月和10月/ 11月欧洲阿尔卑斯山的温暖气温。研究了典型冻土地貌对极端天气期扰动的响应。将使用一个综合的地球物理、热力和气象监测网络，包括在岩石冰川、一个峰顶脊（有朝N和朝s的陡坡）、一个岩石高原和一个距骨坡的试验点。具体的地形方法解释了瑞士阿尔卑斯山的地貌差异、不同的地理和气候区域以及不同的冰含量。

In the proposed project repeated geophysical measurements shall be used to evaluate the sensitivity of mountain permafrost to climate induced warming. In contrast to a thermal monitoring a combined approach of geophysical and thermal assessment of permafrost evolution enables the identification of ground ice degradation or aggradation. Quantification of ground ice content will be possible by the combination of two complementary geophysical methods. Sensitivity of mountain permafrost to climate change will be evaluated using high temporal resolution data sets from extreme atmospheric forcing events on shorter time scales such as the extraordinary hot summer 2003, or the warm July and October/November temperatures 2006 in the European Alps. The response of typical permafrost landforms to disturbance due to extreme weather periods will be investigated. A combined geophysical, thermal and meteorological monitoring network will be used including test sites at rockglaciers, a summit ridge (with N- and S-facing steep slopes), a rock plateau, and a talus slope. The landform specific approach accounts for geomorphological differences, different geographic and climatic regions in the Swiss Alps as well as for different ice contents.