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

在拟建项目中，应使用重复的地球物理测量来评估山区永久冻土对气候引起的变暖的敏感性。与热监测相比，对冻土演变进行地球物理和热评估的综合方法能够识别地面冰的退化或加积。将两种互补的地球物理方法结合起来，就有可能对地面冰含量进行量化。将使用高时间分辨率数据集评估山区永久冻土对气候变化的敏感性，这些数据集来自较短时间尺度上的极端大气强迫事件，如2003年异常炎热的夏季，或欧洲阿尔卑斯山2006年7月和10月/11月的温暖气温。将研究典型的永久冻土地貌对极端天气时期扰动的响应。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、山顶山脊（有面向N和S的陡坡）、岩石高原和岩屑坡的试验场。地形的具体方法考虑到瑞士阿尔卑斯山的地形差异、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.