Articles | Volume 14, issue 4
https://doi.org/10.5194/esurf-14-601-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/esurf-14-601-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
How ice apron loss and permafrost degradation promoted the Platteikogel rock slope failure: a thermo-mechanical reconstruction
Landslide Research Group, TUM School of Engineering and Design, Technical University of Munich, Munich, Germany
Samuel Weber
WSL Institute for Snow and Avalanche Research, SLF, Davos Dorf, Switzerland
Climate Change, Extremes and Natural Hazards in Alpine Regions Research Center CERC, Davos Dorf, Switzerland
Natalie Barbosa
Landslide Research Group, TUM School of Engineering and Design, Technical University of Munich, Munich, Germany
Department of Earth and Environmental Sciences, Faculty of Earth Sciences, GeoBio Center, Ludwig Maximilians University, Munich, Germany
Florentin Hofmeister
Bavarian Academy of Sciences and Humanities, Geodesy and Glaciology, Alfons-Goppel Str. 11, 80539 Munich, Germany
Johannes Leinauer
Landslide Research Group, TUM School of Engineering and Design, Technical University of Munich, Munich, Germany
Peter Wegmann
Department of Computer Science, TUM School of Computation, Information and Technology, Technical University of Munich, Munich, Germany
Michael Krautblatter
Landslide Research Group, TUM School of Engineering and Design, Technical University of Munich, Munich, Germany
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Earth Surf. Dynam., 13, 1157–1179, https://doi.org/10.5194/esurf-13-1157-2025, https://doi.org/10.5194/esurf-13-1157-2025, 2025
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On 13 June 2023, a freestanding rock pillar on the Matterhorn collapsed after years of weakening. Our study examines this progressive destabilization by analyzing field data and integrating lab experiments into a hydro-mechanical model. We highlight the critical role of water infiltration into frozen rock, intensified by climate warming, as a widespread driver of the rising frequency of rockfalls in high mountain permafrost regions.
Felix Pfluger, Samuel Weber, Joseph Steinhauser, Christian Zangerl, Christine Fey, Johannes Fürst, and Michael Krautblatter
Earth Surf. Dynam., 13, 41–70, https://doi.org/10.5194/esurf-13-41-2025, https://doi.org/10.5194/esurf-13-41-2025, 2025
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Philipp Daniel Gewalt, Thomas C. Wagner, and Michael Krautblatter
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This preprint is open for discussion and under review for Earth Surface Dynamics (ESurf).
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Sediments move through mountain landscapes during heavy rainfall. Climate change will alter the occurrence of heavy rainfall, potentially changing sediment transport. To understand how, we investigate how mountain sediment transport responded to past climate changes. We show that sediments in small, steep catchments are moved by less extreme precipitation compared to larger, gentler catchments. This means that catchment form and area control future sediment transport in a changing climate.
Katharina Wetterauer, Sebastian Müller, Michael Krautblatter, Shiva P. Pudasaini, and Ivo Baselt
EGUsphere, https://doi.org/10.5194/egusphere-2026-1235, https://doi.org/10.5194/egusphere-2026-1235, 2026
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Contrasting mobility responses of erosive debris flows are poorly understood. Here, the role of bed inertia in debris-flow evolution and runout is experimentally assessed using distinct bed-density contrasts. Erosion is higher and runout longer over low-density beds, whereas equal- and high-density beds congruently show shallower erosion and shorter runout. The results indicate that solid density alone cannot explain mobility changes and that particle shape and internal friction also contribute.
Maike Offer, Ingo Hartmeyer, Samuel Weber, Markus Keuschnig, and Michael Krautblatter
EGUsphere, https://doi.org/10.5194/egusphere-2025-6091, https://doi.org/10.5194/egusphere-2025-6091, 2026
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Benjamin Jacobs, Mohamed Ismael, Mostafa Ezzy, Markus Keuschnig, Alexander Mendler, Johanna Kieser, Michael Krautblatter, Christian U. Grosse, and Hany Helal
Earth Surf. Dynam., 14, 55–74, https://doi.org/10.5194/esurf-14-55-2026, https://doi.org/10.5194/esurf-14-55-2026, 2026
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Samuel Weber, Andreas Vieli, Marcia Phillips, and Alessandro Cicoira
The Cryosphere, 19, 6727–6748, https://doi.org/10.5194/tc-19-6727-2025, https://doi.org/10.5194/tc-19-6727-2025, 2025
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The properties of the permafrost ground depend on its temperature and composition. We used temperature data from 29 boreholes in Switzerland to study how heat moves through different types of mountain permafrost landforms, supporting a physically meaningful interpretation of thermal properties in terms of ice content, water saturation, and porosity. Understanding changes is important because they can affect how stable mountain slopes are and how easy it is to build things in mountain areas.
Xinyang Fan, Florentin Hofmeister, Bettina Schaefli, and Gabriele Chiogna
EGUsphere, https://doi.org/10.5194/egusphere-2025-6065, https://doi.org/10.5194/egusphere-2025-6065, 2025
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Riccardo Scandroglio, Samuel Weber, Jonas K. Limbrock, and Michael Krautblatter
EGUsphere, https://doi.org/10.5194/egusphere-2025-5552, https://doi.org/10.5194/egusphere-2025-5552, 2025
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This study monitors changes in frozen rock on Mount Zugspitze over 17 years using monthly electrical resistivity measurements. By linking this data to rock temperature and applying advanced analysis, it reveals a 40 % loss of permafrost in the past decade. Thawing accelerates during summer, highlighting increasing risks of rock instability as temperatures rise.
Samuel Weber, Jan Beutel, Michael Dietze, Alexander Bast, Robert Kenner, Marcia Phillips, Johannes Leinauer, Simon Mühlbauer, Felix Pfluger, and Michael Krautblatter
Earth Surf. Dynam., 13, 1157–1179, https://doi.org/10.5194/esurf-13-1157-2025, https://doi.org/10.5194/esurf-13-1157-2025, 2025
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Florentin Hofmeister, Xinyang Fan, Madlene Pfeiffer, Ben Marzeion, Bettina Schaefli, and Gabriele Chiogna
EGUsphere, https://doi.org/10.5194/egusphere-2025-3256, https://doi.org/10.5194/egusphere-2025-3256, 2025
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Timo Schaffhauser, Florentin Hofmeister, Gabriele Chiogna, Fabian Merk, Ye Tuo, Julian Machnitzke, Lucas Alcamo, Jingshui Huang, and Markus Disse
Hydrol. Earth Syst. Sci., 29, 3227–3256, https://doi.org/10.5194/hess-29-3227-2025, https://doi.org/10.5194/hess-29-3227-2025, 2025
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Xinyang Fan, Florentin Hofmeister, Bettina Schaefli, and Gabriele Chiogna
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Preprint archived
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We adopt a fully-distributed, physics-based hydrological modeling approach, to understand streamflow variations and their interactions with groundwater in a high-elevation glaciated environment. We demonstrate opportunities and challenges of integrating point-scale groundwater observations into a distributed model. This study sheds new lights on surface-subsurface processes in high alpine environments and highlights the importance of improving subsurface representation in hydrological modeling.
Riccardo Scandroglio, Samuel Weber, Till Rehm, and Michael Krautblatter
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Maike Offer, Samuel Weber, Michael Krautblatter, Ingo Hartmeyer, and Markus Keuschnig
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Felix Pfluger, Samuel Weber, Joseph Steinhauser, Christian Zangerl, Christine Fey, Johannes Fürst, and Michael Krautblatter
Earth Surf. Dynam., 13, 41–70, https://doi.org/10.5194/esurf-13-41-2025, https://doi.org/10.5194/esurf-13-41-2025, 2025
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Our study explores permafrost–glacier interactions with a focus on their implications for preparing or triggering high-volume rock slope failures. Using the Bliggspitze rock slide as a case study, we demonstrate a new type of rock slope failure mechanism triggered by the uplift of the cold–warm dividing line in polythermal alpine glaciers, a widespread and currently under-explored phenomenon in alpine environments worldwide.
Johannes Leinauer, Michael Dietze, Sibylle Knapp, Riccardo Scandroglio, Maximilian Jokel, and Michael Krautblatter
Earth Surf. Dynam., 12, 1027–1048, https://doi.org/10.5194/esurf-12-1027-2024, https://doi.org/10.5194/esurf-12-1027-2024, 2024
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Massive rock slope failures are a significant alpine hazard and change the Earth's surface. Therefore, we must understand what controls the preparation of such events. By correlating 4 years of slope displacements with meteorological and seismic data, we found that water from rain and snowmelt is the most important driver. Our approach is applicable to similar sites and indicates where future climatic changes, e.g. in rain intensity and frequency, may alter the preparation of slope failure.
Jacopo Boaga, Mirko Pavoni, Alexander Bast, and Samuel Weber
The Cryosphere, 18, 3231–3236, https://doi.org/10.5194/tc-18-3231-2024, https://doi.org/10.5194/tc-18-3231-2024, 2024
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Reversal polarity is observed in rock glacier seismic refraction tomography. We collected several datasets observing this phenomenon in Switzerland and Italy. This phase change may be linked to interferences due to the presence of a thin low-velocity layer. Our results are confirmed by the modelling and analysis of synthetic seismograms to demonstrate that the presence of a low-velocity layer produces a polarity reversal on the seismic gather.
Natalie Barbosa, Johannes Leinauer, Juilson Jubanski, Michael Dietze, Ulrich Münzer, Florian Siegert, and Michael Krautblatter
Earth Surf. Dynam., 12, 249–269, https://doi.org/10.5194/esurf-12-249-2024, https://doi.org/10.5194/esurf-12-249-2024, 2024
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Massive sediment pulses in catchments are a key alpine multi-risk component. Combining high-resolution aerial imagery and seismic information, we decipher a multi-stage >130.000 m³ rockfall and subsequent sediment pulses over 4 years, reflecting sediment deposition up to 10 m, redistribution in the basin, and finally debouchure to the outlet. This study provides generic information on spatial and temporal patterns of massive sediment pulses in highly charged alpine catchments.
Katharina Ramskogler, Bettina Knoflach, Bernhard Elsner, Brigitta Erschbamer, Florian Haas, Tobias Heckmann, Florentin Hofmeister, Livia Piermattei, Camillo Ressl, Svenja Trautmann, Michael H. Wimmer, Clemens Geitner, Johann Stötter, and Erich Tasser
Biogeosciences, 20, 2919–2939, https://doi.org/10.5194/bg-20-2919-2023, https://doi.org/10.5194/bg-20-2919-2023, 2023
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Primary succession in proglacial areas depends on complex driving forces. To concretise the complex effects and interaction processes, 39 known explanatory variables assigned to seven spheres were analysed via principal component analysis and generalised additive models. Key results show that in addition to time- and elevation-dependent factors, also disturbances alter vegetation development. The results are useful for debates on vegetation development in a warming climate.
Marcia Phillips, Chasper Buchli, Samuel Weber, Jacopo Boaga, Mirko Pavoni, and Alexander Bast
The Cryosphere, 17, 753–760, https://doi.org/10.5194/tc-17-753-2023, https://doi.org/10.5194/tc-17-753-2023, 2023
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A new combination of temperature, water pressure and cross-borehole electrical resistivity data is used to investigate ice/water contents in an ice-rich rock glacier. The landform is close to 0°C and has locally heterogeneous characteristics, ice/water contents and temperatures. The techniques presented continuously monitor temporal and spatial phase changes to a depth of 12 m and provide the basis for a better understanding of accelerating rock glacier movements and future water availability.
Sibylle Knapp, Michael Schwenk, and Michael Krautblatter
Earth Surf. Dynam., 10, 1185–1193, https://doi.org/10.5194/esurf-10-1185-2022, https://doi.org/10.5194/esurf-10-1185-2022, 2022
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The Flims area in the Swiss Alps has fascinated the researchers with its complex geological history ever since. Especially the order of events related to the Tamins and Flims rockslides has long been debated. This paper presents novel results based on up to 160 m deep geophysical profiles, which show onlaps of the Bonaduz Formation onto the Tamins deposits (Ils Aults) and thus indicate that the Tamins rockslide occurred first. The consecutive evolution of this landscape is shown in four phases.
Alessandro Cicoira, Samuel Weber, Andreas Biri, Ben Buchli, Reynald Delaloye, Reto Da Forno, Isabelle Gärtner-Roer, Stephan Gruber, Tonio Gsell, Andreas Hasler, Roman Lim, Philippe Limpach, Raphael Mayoraz, Matthias Meyer, Jeannette Noetzli, Marcia Phillips, Eric Pointner, Hugo Raetzo, Cristian Scapozza, Tazio Strozzi, Lothar Thiele, Andreas Vieli, Daniel Vonder Mühll, Vanessa Wirz, and Jan Beutel
Earth Syst. Sci. Data, 14, 5061–5091, https://doi.org/10.5194/essd-14-5061-2022, https://doi.org/10.5194/essd-14-5061-2022, 2022
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This paper documents a monitoring network of 54 positions, located on different periglacial landforms in the Swiss Alps: rock glaciers, landslides, and steep rock walls. The data serve basic research but also decision-making and mitigation of natural hazards. It is the largest dataset of its kind, comprising over 209 000 daily positions and additional weather data.
Shiva P. Pudasaini and Michael Krautblatter
Earth Surf. Dynam., 10, 165–189, https://doi.org/10.5194/esurf-10-165-2022, https://doi.org/10.5194/esurf-10-165-2022, 2022
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We present the first physics-based general landslide velocity model incorporating internal deformation and external forces. Voellmy–inviscid Burgers' equations are specifications of the novel advective–dissipative system. Unified analytical solutions constitute a new foundation of landslide velocity, providing key information to instantly estimate impact forces and describe breaking waves and folding, revealing that landslide dynamics are architectured by advection and reigned by forcing.
Bernd Etzelmüller, Justyna Czekirda, Florence Magnin, Pierre-Allain Duvillard, Ludovic Ravanel, Emanuelle Malet, Andreas Aspaas, Lene Kristensen, Ingrid Skrede, Gudrun D. Majala, Benjamin Jacobs, Johannes Leinauer, Christian Hauck, Christin Hilbich, Martina Böhme, Reginald Hermanns, Harald Ø. Eriksen, Tom Rune Lauknes, Michael Krautblatter, and Sebastian Westermann
Earth Surf. Dynam., 10, 97–129, https://doi.org/10.5194/esurf-10-97-2022, https://doi.org/10.5194/esurf-10-97-2022, 2022
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This paper is a multi-authored study documenting the possible existence of permafrost in permanently monitored rockslides in Norway for the first time by combining a multitude of field data, including geophysical surveys in rock walls. The paper discusses the possible role of thermal regime and rockslide movement, and it evaluates the possible impact of atmospheric warming on rockslide dynamics in Norwegian mountains.
Carolin Kiefer, Patrick Oswald, Jasper Moernaut, Stefano Claudio Fabbri, Christoph Mayr, Michael Strasser, and Michael Krautblatter
Earth Surf. Dynam., 9, 1481–1503, https://doi.org/10.5194/esurf-9-1481-2021, https://doi.org/10.5194/esurf-9-1481-2021, 2021
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This study provides amphibious investigations of debris flow fans (DFFs). We characterize active DFFs, combining laser scan and sonar surveys at Plansee. We discover a 4000-year debris flow record in sediment cores, providing evidence for a 7-fold debris flow frequency increase in the 20th and 21st centuries, coincident with 2-fold enhanced rainstorm activity in the northern European Alps. Our results indicate climate change as being the main factor controlling debris flow activity.
Philipp Mamot, Samuel Weber, Saskia Eppinger, and Michael Krautblatter
Earth Surf. Dynam., 9, 1125–1151, https://doi.org/10.5194/esurf-9-1125-2021, https://doi.org/10.5194/esurf-9-1125-2021, 2021
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The mechanical response of permafrost degradation on high-mountain rock slope stability has not been calculated in a numerical model yet. We present the first approach for a model with thermal and mechanical input data derived from laboratory and field work, and existing concepts. This is applied to a test site at the Zugspitze, Germany. A numerical sensitivity analysis provides the first critical stability thresholds related to the rock temperature, slope angle and fracture network orientation.
Doris Hermle, Markus Keuschnig, Ingo Hartmeyer, Robert Delleske, and Michael Krautblatter
Nat. Hazards Earth Syst. Sci., 21, 2753–2772, https://doi.org/10.5194/nhess-21-2753-2021, https://doi.org/10.5194/nhess-21-2753-2021, 2021
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Multispectral remote sensing imagery enables landslide detection and monitoring, but its applicability to time-critical early warning is rarely studied. We present a concept to operationalise its use for landslide early warning, aiming to extend lead time. We tested PlanetScope and unmanned aerial system images on a complex mass movement and compared processing times to historic benchmarks. Acquired data are within the forecasting window, indicating the feasibility for landslide early warning.
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Short summary
The 2024 Platteikogel rock slope failure (Tyrol, Austria) highlights how cryospheric changes promote slope failure. We demonstrate how the system feedback of ice apron loss, permafrost warming, increase in rockfall activity, and changes in groundwater conditions accelerate mechanical destabilization, and as a consequence likely peaked in the observed failure. Today, rapidly vanishing ice aprons potentially mark source zones for future rock slides.
The 2024 Platteikogel rock slope failure (Tyrol, Austria) highlights how cryospheric changes...