Université de Fribourg

Quantifying irreversible movement in steep, fractured bedrock permafrost on Matterhorn (CH)

Weber, Samuel ; Beutel, Jan ; Faillettaz, Jérome ; Hasler, Andreas ; Krautblatter, Michael ; Vieli, Andreas

In: The Cryosphere, 2017, vol. 11, no. 1, p. 567–583

Understanding rock slope kinematics in steep, fractured bedrock permafrost is a challenging task. Recent laboratory studies have provided enhanced understanding of rock fatigue and fracturing in cold environments but were not successfully confirmed by field studies. This study presents a unique time series of fracture kinematics, rock temperatures and environmental conditions at...

Université de Fribourg

Gap‐filling algorithm for ground surface temperature data measured in permafrost and periglacial environments

Staub, Benno ; Hasler, Andreas ; Noetzli, Jeannette ; Delaloye, andReynald

In: Permafrost and Periglacial Processes, 2017, vol. 28, no. 1, p. 275–285

Ground surface temperatures (GST) are widely measured in mountain permafrost areas, but their time series data can be interrupted by gaps. Gaps complicate the calculation of aggregates and indices required for analysing temporal and spatial variability between loggers and sites. We present an algorithm to estimate daily mean GST and the resulting uncertainty. The algorithm is designed to...