Articles | Volume 9, issue 5
Earth Surf. Dynam., 9, 1125–1151, 2021
https://doi.org/10.5194/esurf-9-1125-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Earth Surf. Dynam., 9, 1125–1151, 2021
https://doi.org/10.5194/esurf-9-1125-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
09 Sep 2021
Research article
| 09 Sep 2021
A temperature-dependent mechanical model to assess the stability of degrading permafrost rock slopes
Philipp Mamot et al.
Related authors
Philipp Mamot, Samuel Weber, Maximilian Lanz, and Michael Krautblatter
The Cryosphere, 14, 1849–1855, https://doi.org/10.5194/tc-14-1849-2020, https://doi.org/10.5194/tc-14-1849-2020, 2020
Short summary
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A failure criterion for ice-filled rock joints is a prerequisite to accurately assess the stability of permafrost rock slopes. In 2018 a failure criterion was proposed based on limestone. Now, we tested the transferability to other rocks using mica schist and gneiss which provide the maximum expected deviation of lithological effects on the shear strength. We show that even for controversial rocks the failure criterion stays unaltered, suggesting that it is applicable to mostly all rock types.
Philipp Mamot, Samuel Weber, Tanja Schröder, and Michael Krautblatter
The Cryosphere, 12, 3333–3353, https://doi.org/10.5194/tc-12-3333-2018, https://doi.org/10.5194/tc-12-3333-2018, 2018
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Most of the observed failures in permafrost-affected alpine rock walls are likely triggered by the mechanical destabilisation of warming bedrock permafrost including ice-filled joints. We present a systematic study of the brittle shear failure of ice and rock–ice contacts along rock joints in a simulated depth ≤ 30 m and at temperatures from −10 to −0.5 °C. Warming and sudden reduction in rock overburden due to the detachment of an upper rock mass lead to a significant drop in shear resistance.
Sibylle Knapp, Michael Schwenk, and Michael Krautblatter
Earth Surf. Dynam. Discuss., https://doi.org/10.5194/esurf-2022-20, https://doi.org/10.5194/esurf-2022-20, 2022
Revised manuscript under review for ESurf
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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 Gravel 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.
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.
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.
Jan Beutel, Andreas Biri, Ben Buchli, Alessandro Cicoira, Reynald Delaloye, Reto Da Forno, Isabelle Gaertner-Roer, Stephan Gruber, Tonio Gsell, Andreas Hasler, Roman Lim, Phillipe Limpach, Raphael Mayoraz, Matthias Meyer, Jeannette Noetzli, Marcia Phillips, Eric Pointner, Hugo Raetzo, Cristian Scapoza, Tazio Strozzi, Lothar Thiele, Andreas Vieli, Daniel Vonder Mühll, Samuel Weber, and Vanessa Wirz
Earth Syst. Sci. Data Discuss., https://doi.org/10.5194/essd-2021-176, https://doi.org/10.5194/essd-2021-176, 2021
Revised manuscript under review for ESSD
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Using standard GPS receivers it is possible to track terrain movements at the sub centimeter scale. This paper documents experiments using this technique monitoring different cryosphere-related mass movement in high-alpine terrain: rock glaciers, landslides as well as steep bedrock. The data serves basic research but also decision making and mitigation of natural hazard as well as adaptation to climate change. It is the largest data set of it’s kind comprising over 209’000 daily positions.
Michael Krautblatter, Lutz Schirrmeister, and Josefine Lenz
Polarforschung, 89, 69–71, https://doi.org/10.5194/polf-89-69-2021, https://doi.org/10.5194/polf-89-69-2021, 2021
Ingo Hartmeyer, Robert Delleske, Markus Keuschnig, Michael Krautblatter, Andreas Lang, Lothar Schrott, and Jan-Christoph Otto
Earth Surf. Dynam., 8, 729–751, https://doi.org/10.5194/esurf-8-729-2020, https://doi.org/10.5194/esurf-8-729-2020, 2020
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Climate warming is causing significant ice surface lowering even in the uppermost parts of alpine glaciers. Using terrestrial lidar, we quantify rockfall in freshly exposed cirque walls. During 6-year monitoring (2011–2017), an extensive dataset was established and over 600 rockfall events identified. Drastically increased rockfall activity following ice retreat can clearly be observed as 60 % of the rockfall volume detached from less than 10 m above the glacier surface.
Ingo Hartmeyer, Markus Keuschnig, Robert Delleske, Michael Krautblatter, Andreas Lang, Lothar Schrott, Günther Prasicek, and Jan-Christoph Otto
Earth Surf. Dynam., 8, 753–768, https://doi.org/10.5194/esurf-8-753-2020, https://doi.org/10.5194/esurf-8-753-2020, 2020
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Rockfall size and frequency in two deglaciating cirques in the Central Alps, Austria, is analysed based on 6-year rockwall monitoring with terrestrial lidar (2011–2017). The erosion rates derived from this dataset are very high due to a frequent occurrence of large rockfalls in freshly deglaciated areas. The results obtained are important for rockfall hazard assessments, as, in rockwalls affected by glacier retreat, historical rockfall patterns are not good predictors of future events.
Philipp Mamot, Samuel Weber, Maximilian Lanz, and Michael Krautblatter
The Cryosphere, 14, 1849–1855, https://doi.org/10.5194/tc-14-1849-2020, https://doi.org/10.5194/tc-14-1849-2020, 2020
Short summary
Short summary
A failure criterion for ice-filled rock joints is a prerequisite to accurately assess the stability of permafrost rock slopes. In 2018 a failure criterion was proposed based on limestone. Now, we tested the transferability to other rocks using mica schist and gneiss which provide the maximum expected deviation of lithological effects on the shear strength. We show that even for controversial rocks the failure criterion stays unaltered, suggesting that it is applicable to mostly all rock types.
Samuel Weber, Jan Beutel, Reto Da Forno, Alain Geiger, Stephan Gruber, Tonio Gsell, Andreas Hasler, Matthias Keller, Roman Lim, Philippe Limpach, Matthias Meyer, Igor Talzi, Lothar Thiele, Christian Tschudin, Andreas Vieli, Daniel Vonder Mühll, and Mustafa Yücel
Earth Syst. Sci. Data, 11, 1203–1237, https://doi.org/10.5194/essd-11-1203-2019, https://doi.org/10.5194/essd-11-1203-2019, 2019
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In this paper, we describe a unique 10-year or more data record obtained from in situ measurements in steep bedrock permafrost in an Alpine environment on the Matterhorn Hörnligrat, Zermatt, Switzerland, at 3500 m a.s.l. By documenting and sharing these data in this form, we contribute to facilitating future research based on them, e.g., in the area of analysis methodology, comparative studies, assessment of change in the environment, natural hazard warning and the development of process models.
Matthias Meyer, Samuel Weber, Jan Beutel, and Lothar Thiele
Earth Surf. Dynam., 7, 171–190, https://doi.org/10.5194/esurf-7-171-2019, https://doi.org/10.5194/esurf-7-171-2019, 2019
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Monitoring rock slopes for a long time helps to understand the impact of climate change on the alpine environment. Measurements of seismic signals are often affected by external influences, e.g., unwanted anthropogenic noise. In the presented work, these influences are automatically identified and removed to enable proper geoscientific analysis. The methods presented are based on machine learning and intentionally kept generic so that they can be equally applied in other (more generic) settings.
Philipp Mamot, Samuel Weber, Tanja Schröder, and Michael Krautblatter
The Cryosphere, 12, 3333–3353, https://doi.org/10.5194/tc-12-3333-2018, https://doi.org/10.5194/tc-12-3333-2018, 2018
Short summary
Short summary
Most of the observed failures in permafrost-affected alpine rock walls are likely triggered by the mechanical destabilisation of warming bedrock permafrost including ice-filled joints. We present a systematic study of the brittle shear failure of ice and rock–ice contacts along rock joints in a simulated depth ≤ 30 m and at temperatures from −10 to −0.5 °C. Warming and sudden reduction in rock overburden due to the detachment of an upper rock mass lead to a significant drop in shear resistance.
Wen Nie, Michael Krautblatter, Kerry Leith, Kurosch Thuro, and Judith Festl
Nat. Hazards Earth Syst. Sci., 17, 1595–1610, https://doi.org/10.5194/nhess-17-1595-2017, https://doi.org/10.5194/nhess-17-1595-2017, 2017
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Deep-seated landslides are an important and widespread natural hazard within alpine regions and can have a massive impact on infrastructure. Pore water pressure plays an important role in determining the stability of hydro-triggered deep-seated landslides. Here we demonstrate a modified tank model for deep-seated landslides that includes snow and infiltration effects and can effectively predict changes in pore water pressure in alpine environments.
Samuel Weber, Jan Beutel, Jérome Faillettaz, Andreas Hasler, Michael Krautblatter, and Andreas Vieli
The Cryosphere, 11, 567–583, https://doi.org/10.5194/tc-11-567-2017, https://doi.org/10.5194/tc-11-567-2017, 2017
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We present a 8-year continuous time series of measured fracture kinematics and thermal conditions on steep permafrost bedrock at Hörnligrat, Matterhorn. Based on this unique dataset and a conceptual model for strong fractured bedrock, we develop a novel quantitative approach that allows to separate reversible from irreversible fracture kinematics and assign the dominant forcing. A new index of irreversibility provides useful indication for the occurrence and timing of irreversible displacements.
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Suspended sediment and discharge dynamics in a glaciated alpine environment: identifying crucial areas and time periods on several spatial and temporal scales in the Ötztal, Austria
A multi-proxy assessment of terrace formation in the lower Trinity River valley, Texas
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J. Kevin Pierce, Marwan A. Hassan, and Rui M. L. Ferreira
Earth Surf. Dynam., 10, 817–832, https://doi.org/10.5194/esurf-10-817-2022, https://doi.org/10.5194/esurf-10-817-2022, 2022
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We describe the flow of sediment in river channels by replacing the complicated details of the turbulent water with probability arguments. Our major conclusions are that (1) sediment transport can be phrased in terms of the movements of individual sediment grains, (2) transport rates in river channels are inherently uncertain, and (3) sediment transport in rivers is directly analogous to a number of phenomena which we understand relatively well, such as molecules moving in air.
Haruka Tsunetaka, Norifumi Hotta, Yuichi Sakai, and Thad Wasklewicz
Earth Surf. Dynam., 10, 775–796, https://doi.org/10.5194/esurf-10-775-2022, https://doi.org/10.5194/esurf-10-775-2022, 2022
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To assess the effects of differences in grain-size distribution within debris flows on the morphology of debris-flow fans, fan morphologies were modeled experimentally. Even if debris flows exhibited similar flow properties, their runout distance differed in response to differences in their grain-size distribution. Differences in runout distance were responsible for variations in the direction of the descending flow that resulted in different debris-flow fan morphology.
Sarah A. Schanz and A. Peyton Colee
Earth Surf. Dynam., 10, 761–774, https://doi.org/10.5194/esurf-10-761-2022, https://doi.org/10.5194/esurf-10-761-2022, 2022
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We mapped and dated 187 earthflows to determine controls on earthflow formation and resulting topographic changes in the Teanaway basin, central Washington State, USA. Using a new relative dating technique and absolute dating, we find that 25 % of earthflows were active in the last ~500 years. Earthflows are lithologically controlled, actively narrow valleys, and increase sediment loads.
Jeongyeon Han and Wonsuck Kim
Earth Surf. Dynam., 10, 743–759, https://doi.org/10.5194/esurf-10-743-2022, https://doi.org/10.5194/esurf-10-743-2022, 2022
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A levee-building model is presented to investigate the effects of flood on levee slope and river behaviors. Coarser grains that cause steep levee slopes lead to frequent switchings of river paths, but higher overflow velocity has an opposite effect. High levee slopes lead to more reoccupations of abandoned old river paths than low levee slopes when rivers switch their locations. The study helps us to assess flood hazards with river-path switching.
Maxwell P. Dahlquist and A. Joshua West
Earth Surf. Dynam., 10, 705–722, https://doi.org/10.5194/esurf-10-705-2022, https://doi.org/10.5194/esurf-10-705-2022, 2022
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Himalayan rivers are full of giant boulders that rarely move except during glacial lake outburst floods (GLOFs), which therefore must be important drivers of erosion in the Himalayas. GLOFs are rare, so little is known about their long-term erosional impact. We found that rivers in Nepal have channel geometry that, compared with markers of upstream glaciation, confirm GLOFs as a major control on erosion. This previously unrecognized control should be accounted for in landscape evolution studies.
Tim Steffen, Matthias Huss, Rebekka Estermann, Elias Hodel, and Daniel Farinotti
Earth Surf. Dynam., 10, 723–741, https://doi.org/10.5194/esurf-10-723-2022, https://doi.org/10.5194/esurf-10-723-2022, 2022
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Climate change is rapidly altering high-alpine landscapes. The formation of new lakes in areas becoming ice free due to glacier retreat is one of the many consequences of this process. Here, we provide an estimate for the number, size, time of emergence, and sediment infill of future glacier lakes that will emerge in the Swiss Alps. We estimate that up to ~ 680 potential lakes could form over the course of the 21st century, with the potential to hold a total water volume of up to ~ 1.16 km3.
Stefan Hergarten
Earth Surf. Dynam., 10, 671–686, https://doi.org/10.5194/esurf-10-671-2022, https://doi.org/10.5194/esurf-10-671-2022, 2022
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Many studies on modeling landform evolution have focused on mountain ranges, while large parts of Earth's surface are quite flat and alluvial plains have been preferred locations for human settlements. Conducting large-scale simulations of fluvial erosion and sediment transport, this study reveals that rivers in a tectonically inactive foreland are much more dynamic than rivers in a mountain range; the local redistribution of deposits in the foreland is the main driver of the dynamics.
Lena Katharina Schmidt, Till Francke, Erwin Rottler, Theresa Blume, Johannes Schöber, and Axel Bronstert
Earth Surf. Dynam., 10, 653–669, https://doi.org/10.5194/esurf-10-653-2022, https://doi.org/10.5194/esurf-10-653-2022, 2022
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Climate change fundamentally alters glaciated high-alpine areas, but it is unclear how this affects riverine sediment transport. As a first step, we aimed to identify the most important processes and source areas in three nested catchments in the Ötztal, Austria, in the past 15 years. We found that areas above 2500 m were crucial and that summer rainstorms were less influential than glacier melt. These findings provide a baseline for studies on future changes in high-alpine sediment dynamics.
Hima J. Hassenruck-Gudipati, Thaddeus Ellis, Timothy A. Goudge, and David Mohrig
Earth Surf. Dynam., 10, 635–651, https://doi.org/10.5194/esurf-10-635-2022, https://doi.org/10.5194/esurf-10-635-2022, 2022
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During the late Pleistocene, the incision of the Trinity River valley left behind terraces. Elevation data and measurements of abandoned channels preserved on terraces are used to evaluate how terraces formed. We find a transition in the style of terraces with age from those associated with external environmental forcings to those produced by internal river migration changes. This result shows the importance of several indicators (i.e., channel bends, elevations) in determining terrace form.
Benjamin Lehmann, Robert S. Anderson, Xavier Bodin, Diego Cusicanqui, Pierre G. Valla, and Julien Carcaillet
Earth Surf. Dynam., 10, 605–633, https://doi.org/10.5194/esurf-10-605-2022, https://doi.org/10.5194/esurf-10-605-2022, 2022
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Rock glaciers are some of the most frequently occurring landforms containing ice in mountain environments. Here, we use field observations, analysis of aerial and satellite images, and dating methods to investigate the activity of the rock glacier of the Vallon de la Route in the French Alps. Our results suggest that the rock glacier is characterized by two major episodes of activity and that the rock glacier system promotes the maintenance of mountain erosion.
Elena Serra, Pierre G. Valla, Romain Delunel, Natacha Gribenski, Marcus Christl, and Naki Akçar
Earth Surf. Dynam., 10, 493–512, https://doi.org/10.5194/esurf-10-493-2022, https://doi.org/10.5194/esurf-10-493-2022, 2022
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Alpine landscapes are transformed by several erosion processes. 10Be concentrations measured in river sediments at the outlet of a basin represent a powerful tool to quantify how fast the catchment erodes. We measured erosion rates within the Dora Baltea catchments (western Italian Alps). Our results show that erosion is governed by topography, bedrock resistance and glacial imprint. The Mont Blanc massif has the highest erosion and therefore dominates the sediment flux of the Dora Baltea river.
Fiona J. Clubb, Eliot F. Weir, and Simon M. Mudd
Earth Surf. Dynam., 10, 437–456, https://doi.org/10.5194/esurf-10-437-2022, https://doi.org/10.5194/esurf-10-437-2022, 2022
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River valleys are important components of mountain systems: they are the most fertile part of landscapes and store sediment which is transported from mountains to surrounding basins. Our knowledge of the location and shape of valleys is hindered by our ability to measure them over large areas. We present a new method for measuring the width of mountain valleys continuously along river channels from digital topography and show that our method can be used to test common models of river widening.
Madison M. Douglas, Gen K. Li, Woodward W. Fischer, Joel C. Rowland, Preston C. Kemeny, A. Joshua West, Jon Schwenk, Anastasia P. Piliouras, Austin J. Chadwick, and Michael P. Lamb
Earth Surf. Dynam., 10, 421–435, https://doi.org/10.5194/esurf-10-421-2022, https://doi.org/10.5194/esurf-10-421-2022, 2022
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Arctic rivers erode into permafrost and mobilize organic carbon, which can react to form greenhouse gasses or be re-buried in floodplain deposits. We collected samples on a permafrost floodplain in Alaska to determine if more carbon is eroded or deposited by river meandering. The floodplain contained a mixture of young carbon fixed by the biosphere and old, re-deposited carbon. Thus, sediment storage may allow Arctic river floodplains to retain aged organic carbon even when permafrost thaws.
Maarten G. Kleinhans, Lonneke Roelofs, Steven A. H. Weisscher, Ivar R. Lokhorst, and Lisanne Braat
Earth Surf. Dynam., 10, 367–381, https://doi.org/10.5194/esurf-10-367-2022, https://doi.org/10.5194/esurf-10-367-2022, 2022
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Floodplain formation in estuaries limit the ebb and flood flow, reducing channel migration and shortening the tidally influenced reach. Vegetation establishment on bars reduces local flow velocity and concentrates flow into channels, while mudflats fill accommodation space and reduce channel migration. These results are based on experimental estuaries in the Metronome facility supported by numerical flow modelling.
Xingyu Chen, Marwan A. Hassan, and Xudong Fu
Earth Surf. Dynam., 10, 349–366, https://doi.org/10.5194/esurf-10-349-2022, https://doi.org/10.5194/esurf-10-349-2022, 2022
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We compiled a large image dataset containing more than 125 000 sediments and developed a model (GrainID) based on convolutional neural networks to measure individual grain size from images. The model was calibrated on flume and natural stream images covering a wide range of fluvial environments. The model showed high performance compared with other methods. Our model showed great potential for grain size measurements from a small patch of sediment in a flume to a watershed-scale drone survey.
David L. Adams and Brett C. Eaton
EGUsphere, https://doi.org/10.5194/egusphere-2022-53, https://doi.org/10.5194/egusphere-2022-53, 2022
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Channel processes under flood conditions are important for river science and management as they involve high volumes of sediment transport and erosion. However, these processes remain poorly understood as the data is difficult to collect. Using a physical model of a river, we found that simple equations based on the mean shear stress and median grain size predicted sediment transport as accurately as ones that accounted for the full range of shear stresses.
Harrison J. Gray, Christopher B. DuRoss, Sylvia R. Nicovich, and Ryan D. Gold
Earth Surf. Dynam., 10, 329–348, https://doi.org/10.5194/esurf-10-329-2022, https://doi.org/10.5194/esurf-10-329-2022, 2022
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Some types of big earthquakes create small cliffs or
fault scarps∼1–3 m in height, where sediments can pile up and create deposits we call
colluvial wedges. Geologists will look at colluvial wedges and use them to understand how often big earthquakes occur. Here we made a computer simulation to find out if the way we think colluvial wedges form works with physics. We found that it does in theory, but there are conditions in which it may be more complicated than we expected.
Zheng Chen, Siming He, Tobias Nicollier, Lorenz Ammann, Alexandre Badoux, and Dieter Rickenmann
Earth Surf. Dynam., 10, 279–300, https://doi.org/10.5194/esurf-10-279-2022, https://doi.org/10.5194/esurf-10-279-2022, 2022
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Bedload flux quantification remains challenging in river dynamics due to variable transport modes. We used a passive monitoring device to record the acoustic signals generated by the impacts of bedload particles with different transport modes, and established the relationship between the triggered signals and bedload characteristics. The findings of this study could improve our understanding of the monitoring system and bedload transport process, and contribute to bedload size classification.
William H. Booker and Brett C. Eaton
Earth Surf. Dynam., 10, 247–260, https://doi.org/10.5194/esurf-10-247-2022, https://doi.org/10.5194/esurf-10-247-2022, 2022
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Channel behaviour is a qualitative aspect of river research that needs development to produce a framework of analysis between and within types of channels. We seek to produce a quantitative metric that can capture how a channel changes using a pair of experiments and collecting easy to obtain data. We demonstrate that this new technique is capable of discerning between river types and may provide a new tool with which we may describe channel behaviour.
Joanne Elkadi, Benjamin Lehmann, Georgina King, Olivia Steinemann, Susan Ivy-Ochs, Marcus Christl, and Frederic Herman
EGUsphere, https://doi.org/10.5194/egusphere-2022-43, https://doi.org/10.5194/egusphere-2022-43, 2022
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Glacial and non-glacial processes have left a strong imprint on the landscape of the European Alps, but further research is needed to better understand their long-term effects. We apply a new technique combining two methods for bedrock surface dating to calculate post-glacier erosion rates next to a Swiss glacier. Interestingly, the results suggest that glacial and non-glacial erosion rates are more similar than previously thought.
Yiran Wang, Michael E. Oskin, Youli Li, and Huiping Zhang
Earth Surf. Dynam., 10, 191–208, https://doi.org/10.5194/esurf-10-191-2022, https://doi.org/10.5194/esurf-10-191-2022, 2022
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Beida River has an over-steepened reach presently located 10 km upstream of the North Qilian mountain front. It was formed because river incising into the bedrocks inside the mountain cannot keep up with river incising into the soft sediment in the basin. We suggest this over-steepened reach represents a fast incision period 3–4 kyr ago, deepening the canyon for ~35 m within ~700 years. The formation of this reach corresponds to a humid period related to strong Southeast Asian Monsoon influence.
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.
Changbin Lim, Soonmi Hwang, and Jung Lyul Lee
Earth Surf. Dynam., 10, 151–163, https://doi.org/10.5194/esurf-10-151-2022, https://doi.org/10.5194/esurf-10-151-2022, 2022
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Recently, along the east coast of South Korea, seasonal beach erosion has been induced by structures which severely block the supply of sand from the upstream side. This study proposes a coastal solution that can predict the maximum indentation point in downdrift erosion formed downstream of groins by applying a parabolic bay shape equation (PBSE).
Karianne Staalesen Lilleøren, Bernd Etzelmüller, Line Rouyet, Trond Eiken, and Christin Hilbich
Earth Surf. Dynam. Discuss., https://doi.org/10.5194/esurf-2022-6, https://doi.org/10.5194/esurf-2022-6, 2022
Revised manuscript under review for ESurf
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In Northern Norway we have observed several rock glaciers at sea level. Rock glaciers are landforms that only form under the influence of permafrost, which is frozen ground. Our investigations show that the rock glaciers are probably not active under the current climate, but most likely was active in the recent past. This shows how the Arctic now changes due to climate changes, and also how similar areas in currently colder climates will change in the future.
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.
Yizhang Wei, Yining Chen, Jufei Qiu, Zeng Zhou, Peng Yao, Qin Jiang, Zheng Gong, Giovanni Coco, Ian Townend, and Changkuan Zhang
Earth Surf. Dynam., 10, 65–80, https://doi.org/10.5194/esurf-10-65-2022, https://doi.org/10.5194/esurf-10-65-2022, 2022
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The barrier tidal basin is increasingly altered by human activity and sea-level rise. These environmental changes probably lead to the emergence or disappearance of islands, yet the effect of rocky islands on the evolution of tidal basins remains poorly investigated. Using numerical experiments, we explore the evolution of tidal basins under varying numbers and locations of islands. This work provides insights for predicting the response of barrier tidal basins in a changing environment.
Marc J. P. Gouw and Marc P. Hijma
Earth Surf. Dynam., 10, 43–64, https://doi.org/10.5194/esurf-10-43-2022, https://doi.org/10.5194/esurf-10-43-2022, 2022
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If you were to navigate an entire delta by boat, you would clearly see that the general characteristics of the channels change throughout the delta. The drivers behind these changes have been studied extensively. Field studies encompassing the entire delta are rare but give important insights into these drivers that can help other researchers. The most important drivers are channel lateral-migration rate, channel-belt longevity, creation of accommodation space and inherited floodplain width.
Yan Zhong, Qiao Liu, Matthew Westoby, Yong Nie, Francesca Pellicciotti, Bo Zhang, Jialun Cai, Guoxiang Liu, Haijun Liao, and Xuyang Lu
Earth Surf. Dynam., 10, 23–42, https://doi.org/10.5194/esurf-10-23-2022, https://doi.org/10.5194/esurf-10-23-2022, 2022
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Slope failures exist in many paraglacial regions and are the main manifestation of the interaction between debris-covered glaciers and slopes. We mapped paraglacial slope failures (PSFs) along the Hailuogou Glacier (HLG), Mt. Gongga, southeastern Tibetan Plateau. We argue that the formation, evolution, and current status of these typical PSFs are generally related to glacier history and paraglacial geomorphological adjustments, and influenced by the fluctuation of climate conditions.
Yizhou Wang, Liran Goren, Dewen Zheng, and Huiping Zhang
Earth Surf. Dynam. Discuss., https://doi.org/10.5194/esurf-2021-101, https://doi.org/10.5194/esurf-2021-101, 2021
Revised manuscript accepted for ESurf
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Abrupt changes in tectonic uplift rates induce sharp changes in river profile, called knickpoints. When river erosion depends non-linearly on slope, we develop an analytic model for knickpoint velocity and find the condition of two knickpoint merging. Then we develop analytic models that represent the two-directional link between tectonic changes and river profile evolution. The derivation provides new understanding on the links between tectonic changes and river profile evolution.
Sophie Bodek and Douglas J. Jerolmack
Earth Surf. Dynam., 9, 1531–1543, https://doi.org/10.5194/esurf-9-1531-2021, https://doi.org/10.5194/esurf-9-1531-2021, 2021
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As rocks are transported, they undergo two attrition mechanisms: chipping, shallow cracking at low collision energies; and fragmentation, significant fracture growth from high-energy impacts. We examine the mass and shape evolution of concrete particles in a rotating drum to experimentally delineate the boundary between chipping and fragmentation. By connecting the mechanics of these attrition processes to resulting shape evolution, we can use particle shape to infer past transport conditions.
Jennifer R. Shadrick, Martin D. Hurst, Matthew D. Piggott, Bethany G. Hebditch, Alexander J. Seal, Klaus M. Wilcken, and Dylan H. Rood
Earth Surf. Dynam., 9, 1505–1529, https://doi.org/10.5194/esurf-9-1505-2021, https://doi.org/10.5194/esurf-9-1505-2021, 2021
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Here we use topographic and 10Be concentration data to optimise a coastal evolution model. Cliff retreat rates are calculated for two UK sites for the past 8000 years and, for the first time, highlight a strong link between the rate of sea level rise and long-term cliff retreat rates. This method enables us to study past cliff response to sea level rise and so to greatly improve forecasts of future responses to accelerations in sea level rise that will result from climate change.
Marco Piantini, Florent Gimbert, Hervé Bellot, and Alain Recking
Earth Surf. Dynam., 9, 1423–1439, https://doi.org/10.5194/esurf-9-1423-2021, https://doi.org/10.5194/esurf-9-1423-2021, 2021
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We carry out laboratory experiments to investigate the formation and propagation dynamics of exogenous sediment pulses in mountain rivers. We show that the ability of a self-formed deposit to destabilize and generate sediment pulses depends on the sand content of the mixture, while each pulse turns out to be formed by a front, a body, and a tail. Seismic measurements reveal a complex and non-unique dependency between seismic power and sediment pulse transport characteristics.
Fumitoshi Imaizumi, Atsushi Ikeda, Kazuki Yamamoto, and Okihiro Ohsaka
Earth Surf. Dynam., 9, 1381–1398, https://doi.org/10.5194/esurf-9-1381-2021, https://doi.org/10.5194/esurf-9-1381-2021, 2021
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The rainfall threshold for debris flow occurrence was evaluated on Mt. Fuji, Japan. Debris flows during frozen periods were triggered by a smaller magnitude of rainfall than during unfrozen periods. During unfrozen periods, the threshold of maximum hourly rainfall intensity triggering debris flow was higher when the volume of channel deposits was larger. The results suggest that the occurrence of frozen ground needs to be monitored for better debris flow disaster mitigation in cold regions.
Víctor Cartelle, Natasha L. M. Barlow, David M. Hodgson, Freek S. Busschers, Kim M. Cohen, Bart M. L. Meijninger, and Wessel P. van Kesteren
Earth Surf. Dynam., 9, 1399–1421, https://doi.org/10.5194/esurf-9-1399-2021, https://doi.org/10.5194/esurf-9-1399-2021, 2021
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Reconstructing the growth and decay of past ice sheets is critical to understand relationships between global climate and sea-level change. We take advantage of large wind-farm datasets in the southern North Sea to investigate buried landscapes left by ice sheet advance and retreat occurring about 160 000 years ago. We demonstrate the utility of offshore wind-farm data in refining palaeo-ice sheet margin limits and providing insight into the processes influencing marginal ice sheet dynamics.
Melisa A. Diaz, Lee B. Corbett, Paul R. Bierman, Byron J. Adams, Diana H. Wall, Ian D. Hogg, Noah Fierer, and W. Berry Lyons
Earth Surf. Dynam., 9, 1363–1380, https://doi.org/10.5194/esurf-9-1363-2021, https://doi.org/10.5194/esurf-9-1363-2021, 2021
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We collected soil surface samples and depth profiles every 5 cm (up to 30 cm) from 11 ice-free areas along the Shackleton Glacier, a major outlet glacier of the East Antarctic Ice Sheet (EAIS), and measured meteoric beryllium-10 and nitrate concentrations to understand the relationship between salts and beryllium-10. This relationship can help inform wetting history, landscape disturbance, and exposure duration.
Chiu H. Cheng, Jaco C. de Smit, Greg S. Fivash, Suzanne J. M. H. Hulscher, Bas W. Borsje, and Karline Soetaert
Earth Surf. Dynam., 9, 1335–1346, https://doi.org/10.5194/esurf-9-1335-2021, https://doi.org/10.5194/esurf-9-1335-2021, 2021
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Shells are biogenic particles that are widespread throughout natural sandy environments and can affect the bed roughness and seabed erodibility. As studies are presently lacking, we experimentally measured ripple formation and migration using natural sand with increasing volumes of shell material under unidirectional flow in a racetrack flume. We show that shells expedite the onset of sediment transport, reduce ripple dimensions and slow their migration rate.
Christopher R. Hackney, Grigorios Vasilopoulos, Sokchhay Heng, Vasudha Darbari, Samuel Walker, and Daniel R. Parsons
Earth Surf. Dynam., 9, 1323–1334, https://doi.org/10.5194/esurf-9-1323-2021, https://doi.org/10.5194/esurf-9-1323-2021, 2021
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Unsustainable sand mining poses a threat to the stability of river channels. We use satellite imagery to estimate volumes of material removed from the Mekong River, Cambodia, over the period 2016–2020. We demonstrate that current rates of extraction now exceed previous estimates for the entire Mekong Basin and significantly exceed the volume of sand naturally transported by the river. Our work highlights the importance of satellite imagery in monitoring sand mining activity over large areas.
Xiangang Jiang, Haiguang Cheng, Lei Gao, and Weiming Liu
Earth Surf. Dynam., 9, 1263–1277, https://doi.org/10.5194/esurf-9-1263-2021, https://doi.org/10.5194/esurf-9-1263-2021, 2021
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Boulder bars are a common form of riverbed morphology which can be affected by outburst flood. However, few studies have focused on boulder bars' formation process and development characteristics during landslide dam failure. In this paper, eight groups of dam failure experiments were carried out to study the development and geometry characteristics of boulder bars during and after dam failure. Moreover, the relationships between geometry parameters of boulder bars are investigated.
Wentao Yang, Jian Fang, and Jing Liu-Zeng
Earth Surf. Dynam., 9, 1251–1262, https://doi.org/10.5194/esurf-9-1251-2021, https://doi.org/10.5194/esurf-9-1251-2021, 2021
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The eastern Tibetan Plateau is an ideal place to study interactions among different geomorphic drivers. We report the impacts of two 2018 landslide-lake outburst floods up to 100 km distance downstream of the Jinsha River. By using remote sensing images, we found that the 2018 floods caused many hillslopes to slump during the prolonged period afterwards. The finding could help us to obtain a holistic picture of LLF impacts and improve geomorphic models of landscape evolution.
Michael Itzkin, Laura J. Moore, Peter Ruggiero, Sally D. Hacker, and Reuben G. Biel
Earth Surf. Dynam., 9, 1223–1237, https://doi.org/10.5194/esurf-9-1223-2021, https://doi.org/10.5194/esurf-9-1223-2021, 2021
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Studies of the impact of storms on dunes typically focus on the importance of dune elevation,
here we analyze the protective services offered by the dune height and width, the morphology
of the beach fronting the dune, and artificial dune construction via the use of sand fences.
We find that dune volume loss most strongly correlates to beach width rather than dune shape,
although when beach width is controlled for low and wide dunes offer greater protection than
tall and narrow dunes.
Rose V. Palermo, Anastasia Piliouras, Travis E. Swanson, Andrew D. Ashton, and David Mohrig
Earth Surf. Dynam., 9, 1111–1123, https://doi.org/10.5194/esurf-9-1111-2021, https://doi.org/10.5194/esurf-9-1111-2021, 2021
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At Sargent Beach, Texas, USA, a rapidly eroding soft-sediment cliff system, we study the planform evolution of the cliff face in response to storms and sediment cover. Through this analysis, we characterize the feedbacks between morphology and retreat rate of a cliff face. We find that after a storm event, the roughness and sinuosity of the cliff face increase, which sustains higher retreat rates for years following.
Daniel Draebing
Earth Surf. Dynam., 9, 977–994, https://doi.org/10.5194/esurf-9-977-2021, https://doi.org/10.5194/esurf-9-977-2021, 2021
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Alpine rockwalls are affected by weathering processes that result in rock and fracture deformation. This deformation decreases rockwall stability with time. I installed crackmeters along a topographic gradient to identify the spatial and temporal variation of weathering processes. My data show that elevation-dependent snow cover, topographic factors and fracture dipping control the frequency and magnitude of weathering processes and resulting rock kinematics.
Odin Marc, Jens M. Turowski, and Patrick Meunier
Earth Surf. Dynam., 9, 995–1011, https://doi.org/10.5194/esurf-9-995-2021, https://doi.org/10.5194/esurf-9-995-2021, 2021
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The size of grains delivered to rivers is an essential parameter for understanding erosion and sediment transport and their related hazards. In mountains, landslides deliver these rock fragments, but few studies have analyzed the landslide properties that control the resulting sizes. We present measurements on 17 landslides from Taiwan and show that their grain sizes depend on rock strength, landslide depth and drop height, thereby validating and updating a previous theory on fragmentation.
Misa Yasumiishi, Taku Nishimura, Jared Aldstadt, Sean J. Bennett, and Thomas Bittner
Earth Surf. Dynam., 9, 861–893, https://doi.org/10.5194/esurf-9-861-2021, https://doi.org/10.5194/esurf-9-861-2021, 2021
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Topographic effects on radioactive contamination in a forested area were quantitatively examined using soil core samples collected in a village in Fukushima, Japan. The results confirmed that local topography influences the contamination patterns in soils, and its effects vary depending on the combinations of the topographic parameters. This finding suggests that topographic characteristics should be considered carefully in future environmental radioactive risk assessments.
Jingtao Lai and Alison M. Anders
Earth Surf. Dynam., 9, 845–859, https://doi.org/10.5194/esurf-9-845-2021, https://doi.org/10.5194/esurf-9-845-2021, 2021
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Glaciers are strong erosive agents, and they have created many unique landforms in mountain belts. Climate has been viewed as a primary control on glacial erosion, yet our understanding of the mechanism by which climate impacts glacial erosion remains limited. Using computer simulations, we find that climate controls glacial erosion by modulating the temperature of the basal ice. Our results suggest that a warm and/or wet climate can create warm basal ice and, therefore, enhance erosion.
Gilles Brocard, Jane Kathrin Willenbring, Tristan Salles, Michael Cosca, Axel Guttiérez-Orrego, Noé Cacao Chiquín, Sergio Morán-Ical, and Christian Teyssier
Earth Surf. Dynam., 9, 795–822, https://doi.org/10.5194/esurf-9-795-2021, https://doi.org/10.5194/esurf-9-795-2021, 2021
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The rise of a mountain affects the circulation of water, both in the atmosphere and over the land surface, thereby affecting the erosion of the land surface. We document how the rise of a mountain in central Guatemala has affected the erosion of an older range nearby. The new range intercepts precipitation formerly delivered to the older range. River response to the uplift of the new range has decreased incision across the older one. Both have reduced hillslope erosion over the old range.
Elena T. Bruni, Richard F. Ott, Vincenzo Picotti, Negar Haghipour, Karl W. Wegmann, and Sean F. Gallen
Earth Surf. Dynam., 9, 771–793, https://doi.org/10.5194/esurf-9-771-2021, https://doi.org/10.5194/esurf-9-771-2021, 2021
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The Klados River catchment contains seemingly overlarge, well-preserved alluvial terraces and fans. Unlike previous studies, we argue that the deposits formed in the Holocene based on their position relative to a paleoshoreline uplifted in 365 CE and seven radiocarbon dates. We also find that constant sediment supply from high-lying landslide deposits disconnected the valley from regional tectonics and climate controls, which resulted in fan and terrace formation guided by stochastic events.
Kimberly Litwin Miller and Douglas Jerolmack
Earth Surf. Dynam., 9, 755–770, https://doi.org/10.5194/esurf-9-755-2021, https://doi.org/10.5194/esurf-9-755-2021, 2021
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We conducted experiments to investigate the mechanics of sediment attrition due to collisions with the channel bed during downstream transport. During this process, the grains become rounder and smaller, changing the overall distribution of sediment in the river. In this work we examine how material properties play a role in the breakdown of sediment due to energetic collisions and the fine particles that are produced when chipped off of larger grains.
Nate A. Mitchell and Brian J. Yanites
Earth Surf. Dynam., 9, 723–753, https://doi.org/10.5194/esurf-9-723-2021, https://doi.org/10.5194/esurf-9-723-2021, 2021
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A landscape's appearance reflects the properties of the underlying bedrock. For example, strong bedrock can lead to steep slopes. Recent work has shown, however, that in areas with mixed rock types the stronger bedrock can have lower slopes. In this study, we use numerical models of bedrock river erosion to show why this change in behavior occurs. We also present a new approach for estimating bedrock erodibility. This new approach can allow for new opportunities in the field of geomorphology.
Sarah G. W. Williams and David J. Furbish
Earth Surf. Dynam., 9, 701–721, https://doi.org/10.5194/esurf-9-701-2021, https://doi.org/10.5194/esurf-9-701-2021, 2021
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Particle motions and travel distances prior to deposition on hillslope surfaces depend on a balance of gravitational and frictional forces. We elaborate how particle energy is partitioned and dissipated during travel using measurements of particle travel distances supplemented with high-speed imaging of drop–impact–rebound experiments. Results show that particle shape plays a dominant role in how energy is partitioned during impact with a surface and how far particles travel in two dimensions.
Cited articles
Arenson, L. U. and Springman, S. M.: Triaxial constant stress and constant
strain rate tests on ice-rich permafrost samples, Can. Geotech. J., 42, 412–430, https://doi.org/10.1139/t04-111, 2005.
Aydin, A. and Basu, A.: The Schmidt hammer in rock material characterization, Eng. Geol., 81, 1–14, 2005.
Bandis, S. C., Lumsden, A. C., and Barton, N. R.: Fundamentals of rock joint
deformation, Int. J. Rock Mech. Min., 20, 249–268, 1983.
Barnes, P., Tabor, D., and Walker, J. C. F.: The friction and creep of
polycrystalline ice, P. Roy. Soc. Lond. A, 324, 127–155, 1971.
Barton, N. R.: A model study of rock-joint deformation, Int. J. Rock Mech.
Min., 9, 579–582, https://doi.org/10.1016/0148-9062(72)90010-1, 1972.
Barton, N. R.: Shear strength criteria for rock, rock joints, rockfill and rock masses: Problems and some solutions, J. Rock Mech. Geotech. Eng., 5,
249–261, https://doi.org/10.1016/j.jrmge.2013.05.008, 2013.
Barton, N. R. and Choubey, V.: The shear strength of rock joints in theory
and practice, Rock Mech., 10, 1–54, 1977.
Bavarian Agency for Digitisation, High-Speed Internet and Surveying: Digital elevation model of the Zugspitze summit area, Bavarian Agency for Digitisation, High-Speed Internet and Surveying, Munich, 2006.
Bhasin, R. and Kaynia, A. M.: Static and dynamic simulation of a 700-m high
rock slope in western Norway, Eng. Geol., 71, 213–226,
https://doi.org/10.1016/S0013-7952(03)00135-2, 2004.
Biskaborn, B. K., Smith, S. L., Noetzli, J., Matthes, H., Vieira, G.,
Streletskiy, D. A., Schoeneich, P., Romanovsky, V. E., Lewkowicz, A. G., Abramov, A., Allard, M., Boike, J., Cable, W. L., Christiansen, H. H., Delaloye, R., Diekmann, B., Drozdov, D., Etzelmüller, B., Grosse, G.,
Guglielmin, M., Ingeman-Nielsen, T., Isaksen, K., Ishikawa, M., Johansson,
M., Johannsson, H., Joo, A., Kaverin, D., Kholodov, A., Konstantinov, P.,
Kröger, T., Lambiel, C., Lanckman, J.-P., Luo, D., Malkova, G., Meiklejohn, I., Moskalenko, N., Oliva, M., Phillips, M., Ramos, M., Sannel, A. Britta K., Sergeev, D., Seybold, C., Skryabin, P., Vasiliev, A., Wu, Q.,
Yoshikawa, K., Zheleznyak, M., and Lantuit, H.: Permafrost is warming at a
global scale, Nat. Commun., 10, 264, https://doi.org/10.1038/s41467-018-08240-4, 2019.
Böckli, L., Nötzli, J., and Gruber, S.: PermaNET-BY: Untersuchung des
Permafrosts in den Bayerischen Alpen, Teilprojekt PermaNET (EU Alpine Space
Interreg IVb), Glaciology, Geomorphodynamics & Geochronology,
Department of Geography,
University of Zurich, Zürich, 60 pp., 2011.
Bray, M. T.: Secondary creep approximations of ice-rich soils and ice using
transient relaxation tests, Cold. Reg. Sci. Technol., 88, 17–36,
https://doi.org/10.1016/j.coldregions.2012.12.011, 2013.
Butkovitch, T. R.: The ultimate strength of ice, Report on the Snow, Ice and Permafrost Research Establishment Project, Res. paper 15, Corps of Engineers, U. S. Army, Wilmette, Illinois, 1954.
Cai, M., Kaiser, P. K., Uno, H., Tasaka, Y., and Minami, M.: Estimation of
rock mass deformation modulus and strength of jointed hard rock masses using
the GSI system, Int. J. Rock Mech. Min., 41, 3–19,
https://doi.org/10.1016/S1365-1609(03)00025-X, 2004.
Chang, S.-H., Lee, C.-I., and Jeon, S.: Measurement of rock fracture toughness under modes I and II and mixed-mode conditions by using disc-type
specimens, Eng. Geol., 66, 79–97, https://doi.org/10.1016/S0013-7952(02)00033-9, 2002.
Cruden, D. M.: The shapes of cold, high mountains in sedimentary rocks,
Geomorphology, 55, 249–261, https://doi.org/10.1016/S0169-555X(03)00143-0, 2003.
Davies, M. C. R., Hamza, O., Lumsden, B. W., and Harris, C.: Laboratory
measurement of the shear strength of ice-filled rock joints, Ann. Glaciol.,
31, 463–467, https://doi.org/10.3189/172756400781819897, 2000.
Davies, M. C. R., Hamza, O., and Harris, C.: The effect of rise in mean annual temperature on the stability of rock slopes containing ice-filled
discontinuities, Permafrost Periglac., 12, 137–144, https://doi.org/10.1002/ppp.378, 2001.
Deline, P., Gruber, S., Delaloye, R., Fischer, L., Geertsema, M., Giardino,
M., Hasler, A., Kirkbride, M., Krautblatter, M., Magnin, F., McColl, S.,
Ravanel, L., and Schoeneich, P.: Ice Loss and Slope Stability in High-Mountain Regions, in: Snow and Ice-Related Hazards, Risks and Disasters, Academic Press, Boston, 521–561, 2015.
Draebing, D. and Krautblatter, M.: P-wave velocity changes in freezing hard low-porosity rocks: a laboratory-based time-average model, The Cryosphere, 6, 1163–1174, https://doi.org/10.5194/tc-6-1163-2012, 2012.
Dramis, F., Govi, M., Guglielmin, M., and Mortara, G.: Mountain permafrost and slope instability in the Italian Alps. The Val Pola Landslide, Permafrost Periglac., 6, 73–81, https://doi.org/10.1002/ppp.3430060108, 1995.
Dwivedi, R. D., Soni, A. K., Goel, R. K., and Dube, A. K.: Fracture toughness
of rocks under sub-zero temperature conditions, Int. J. Rock Mech. Min., 37,
1267–1275, 2000.
Eberhardt, E., Stead, D., and Coggan, J. S.: Numerical analysis of initiation
and progressive failure in natural rock slopes – the 1991 Randa rockslide,
Int. J. Rock Mech. Min., 41, 69–87, https://doi.org/10.1016/S1365-1609(03)00076-5, 2004.
Etzelmüller, B.: Recent Advances in Mountain Permafrost Research, Permafrost Periglac., 24, 99–107, https://doi.org/10.1002/ppp.1772, 2013.
Fischer, L., Kääb, A., Huggel, C., and Noetzli, J.: Geology, glacier retreat and permafrost degradation as controlling factors of slope instabilities in a high-mountain rock wall: the Monte Rosa east face, Nat. Hazards Earth Syst. Sci., 6, 761–772, https://doi.org/10.5194/nhess-6-761-2006, 2006.
Fischer, L., Amann, F., Moore, J. R., and Huggel, C.: Assessment of periglacial slope stability for the 1988 Tschierva rock avalanche (Piz Morteratsch, Switzerland), Eng. Geol., 116, 32–43, https://doi.org/10.1016/j.enggeo.2010.07.005, 2010.
Fischer, L., Purves, R. S., Huggel, C., Noetzli, J., and Haeberli, W.: On the influence of topographic, geological and cryospheric factors on rock avalanches and rockfalls in high-mountain areas, Nat. Hazards Earth Syst. Sci., 12, 241–254, https://doi.org/10.5194/nhess-12-241-2012, 2012.
Gallemann, T., Haas, U., Teipel, U., von Poschinger, A., Wagner, B., Mahr,
M., and Bäse, F.: Permafrost-Messstation am Zugspitzgipfel: Ergebnisse
und Modellberechnungen, Geolog. Bavar., 115, 1–77, 2017.
Gambino, G. F. and Harrison, J. P.: Rock Engineering Design in Frozen and Thawing Rock. Current Approaches and Future Directions, Proced. Eng., 191, 656–665, https://doi.org/10.1016/j.proeng.2017.05.229, 2017.
Gischig, V., Amann, F., Moore, J. R., Loew, S., Eisenbeiss, H., and Stempfhuber, W.: Composite rock slope kinematics at the current Randa instability, Switzerland, based on remote sensing and numerical modeling,
Eng. Geol., 118, 37–53, https://doi.org/10.1016/j.enggeo.2010.11.006, 2011a.
Gischig, V. S., Moore, J. R., Evans, K. F., Amann, F., and Loew, S.:
Thermomechanical forcing of deep rock slope deformation. 1. Conceptual study
of a simplified slope, J. Geophys. Res.-Earth, 116, F04010, https://doi.org/10.1029/2011JF002006, 2011b.
Gischig, V. S., Moore, J. R., Keith, F. E., Amann, F., and Loew, S.:
Thermomechanical forcing of deep rock slope deformation: 2. The Randa rock
slope instability, J. Geophys. Res., 116, F04011, https://doi.org/10.1029/2011JF002007, 2011c.
Glamheden, R.: Thermo-mechanical behaviour of refrigerated caverns in hard
rock, Chalmers University of Technology, Göteborg, 2001.
Glamheden, R. and Lindblom, U.: Thermal and mechanical behaviour or refrigerated caverns in hard rock, Tunn. Undergr. Sp. Tech., 17, 341–353,
2002.
Gobiet, A., Kotlarski, S., Beniston, M., Heinrich, G., Rajczak, J., and
Stoffel, M.: 21st century climate change in the European Alps – A review, Sci. Total Environ., 493, 1138–1151, https://doi.org/10.1016/j.scitotenv.2013.07.050, 2014.
Gruber, S. and Haeberli, W.: Permafrost in steep bedrock slopes and its
temperature-related destabilization following climate change, J. Geophys. Res., 112, 1–10, https://doi.org/10.1029/2006JF000547, 2007.
Gruber, S., Hoelzle, M., and Haeberli, W.: Permafrost thaw and destabilization of Alpine rock walls in the hot summer of 2003, Geophys. Res. Lett., 31, L13504, https://doi.org/10.1029/2004GL020051, 2004.
Günzel, F. K.: Shear strength of ice-filled rock joints, in: 9th International Conference on Permafrost, 28 June–3 July 2008, Fairbanks, Alaska, 2008.
Haberkorn, A., Wever, N., Hoelzle, M., Phillips, M., Kenner, R., Bavay, M., and Lehning, M.: Distributed snow and rock temperature modelling in steep rock walls using Alpine3D, The Cryosphere, 11, 585–607, https://doi.org/10.5194/tc-11-585-2017, 2017.
Harris, C., Arenson, L. U., Christiansen, H. H., Etzelmüller, B., Frauenfelder, R., Gruber, S., Haeberli, W., Hauck, C., Hölzle, M., Humlum, O., Isaksen, K., Kääb, A., Kern-Lütschg, M. A., Lehning,
M., Matsuoka, N., Murton, J. B., Nötzli, J., Phillips, M., Ross, N.,
Seppälä, M., Springman, S. M., and Mühll, D. Vonder: Permafrost
and climate in Europe. Monitoring and modelling thermal, geomorphological and geotechnical responses, Earth-Sci. Rev., 92, 117–171,
https://doi.org/10.1016/j.earscirev.2008.12.002, 2009.
Hauck, C. and Kneisel, C. (Eds.): Applied Geophysics in Periglacial Environments, Cambridge University Press, Cambridge, 2008.
Hipp, T., Etzelmüller, B., Farbrot, H., Schuler, T. V., and Westermann, S.: Modelling borehole temperatures in Southern Norway – insights into
permafrost dynamics during the 20th and 21st century, The Cryosphere, 6,
553–571, https://doi.org/10.5194/tc-6-553-2012, 2012.
Hoek, E. and Brown, E. T.: Practical estimates of rock mass strength, Int.
J. Rock Mech. Min., 34, 1165–1186, https://doi.org/10.1016/S1365-1609(97)80069-X, 1997.
Hoek, E., Carranza-Torres, C., and Corkum, B.: Hoek-Brown failure criterion – 2002 Edition, Proceedings of the 5th North American Rock Mechanics Symposium (NARMS),
edited by: Hammah, R., Bawden, W., Curran, J., and Telesnicki, M.,
University of Toronto Press, Toronto, Ont., Canada, 1,
267–273, 2002.
Huang, D., Cen, D., Ma, G., and Huang, R.: Step-path failure of rock slopes
with intermittent joints, Landslides, 12, 911–926, https://doi.org/10.1007/s10346-014-0517-6, 2015.
Huggel, C., Zgraggen-Oswald, S., Haeberli, W., Kääb, A., Polkvoj, A., Galushkin, I., and Evans, S. G.: The 2002 rock/ice avalanche at Kolka/Karmadon, Russian Caucasus: assessment of extraordinary avalanche formation and mobility, and application of QuickBird satellite imagery, Nat. Hazards Earth Syst. Sci., 5, 173–187, https://doi.org/10.5194/nhess-5-173-2005, 2005.
Huggel, C., Salzmann, N., Allen, S., Caplan-Auerbach, J., Fischer, L., Haeberli, W., Larsen, C., Schneider, D., and Wessels, R.: Recent and future
warm extreme events and high-mountain slope stability, Philos. T. Roy. Soc. A, 368, 2435–2459, https://doi.org/10.1098/rsta.2010.0078, 2010.
Huggel, C., Allen, S., Deline, P., Fischer, L., Noetzli, J., and Ravanel, L.:
Ice thawing, mountains falling – are alpine rock slope failures increasing?,
Geol. Today, 28, 98–104, https://doi.org/10.1111/j.1365-2451.2012.00836.x, 2012.
Inada, Y. and Yokota, K.: Some studies of low temperature rock strength, Int. J. Rock Mech. Min., 21, 145–153, https://doi.org/10.1016/0148-9062(84)91532-8, 1984.
Itasca Consulting Group: UDEC – Universal Distinct Element Code, User's Manual, Minneapolis, 2019.
Jaeger, J. C., Cook, N. G., and Zimmerman, R. W.: Fundamentals of rock
mechanics, 4th edn., Blackwell Publishing Ltd, Malden, USA,
Oxford, UK,
Carlton, Australia, 2007.
Jellinek, H. H. G.: Adhesive properties of ice, J. Coll. Sci., 14, 268–280,
1959.
Jennings, J.: A mathematical theory for the calculation of the stability of
open cast mines, Symposium on the theoretical background to the planning of open pit mines, Johannesburg, Republic of South Africa, 1970.
Keuschnig, M., Krautblatter, M., Hartmeyer, I., Fuss, C., and Schrott, L.:
Automated Electrical Resistivity Tomography Testing for Early Warning in
Unstable Permafrost Rock Walls Around Alpine Infrastructure, Permafrost
Periglac., 28, 158–171, https://doi.org/10.1002/ppp.1916, 2017.
Kodama, J., Goto, T., Fujii, Y., and Hagan P.: The effects of water content,
temperature and loading rate on strength and failure process of frozen rocks, Int. J. Rock Mech. Min., 62, 1–13, 2013.
Körner, H. and Ulrich, R.: Geologische und felsmechanische Untersuchungen für die Gipfelstation der Seilbahn Eibsee-Zugspitze, Geol. Bavar., 55, 404–421, 1965.
Krautblatter, M., Verleysdonk, S., Flores-Orozco, A. and Kemna, A.: Temperature-calibrated imaging of seasonal changes in permafrost rock walls by quantitative electrical resistivity tomography (Zugspitze, German/Austrian Alps), J. Geophys. Res.-Earth, 115, 1–15, 2010.
Krautblatter, M., Huggel, C., Deline, P., and Hasler, A.: Research Perspectives on Unstable High-alpine Bedrock Permafrost. Measurement,
Modelling and Process Understanding, Permafrost Periglac., 23, 80–88,
https://doi.org/10.1002/ppp.740, 2012.
Krautblatter, M., Funk, D., and Günzel, F. K.: Why permafrost rocks become unstable: a rock-ice-mechanical model in time and space, Earth Surf.
Proc. Land., 38, 876–887, 2013.
Kulatilake, P. H. S. W., Ucpirti, H., Wang, S., Radberg, G., and Stephansson,
O.: Use of the distinct element method to perform stress analysis in rock
with non-persistent joints and to study the effect of joint geometry parameters on the strength and deformability of rock masses, Rock Mech. Rock
Eng., 25, 253–274, https://doi.org/10.1007/BF01041807, 1992.
Kveldsvik, V., Einstein, H. H., Nilsen, B., and Blikra, L. H.: Numerical Analysis of the 650,000 m2 Åknes Rock Slope based on Measured
Displacements and Geotechnical Data, Rock Mech. Rock Eng., 42, 689–728, https://doi.org/10.1007/s00603-008-0005-1, 2008.
Magnin, F., Krautblatter, M., Deline, P., Ravanel, L., Malet, E., and Bevington, A.: Determination of warm, sensitive permafrost areas in near-vertical rockwalls and evaluation of distributed models by electrical
resistivity tomography, J. Geophys. Res.-Earth, 120, 745–762,
https://doi.org/10.1002/2014JF003351, 2015.
Mamot, P., Weber, S., Schröder, T., and Krautblatter, M.: A temperature-
and stress-controlled failure criterion for ice-filled permafrost rock joints, The Cryosphere, 12, 3333—3353, https://doi.org/10.5194/tc-12-3333-2018, 2018.
Mamot, P., Weber, S., Lanz, M., and Krautblatter, M.: Brief communication: The influence of mica-rich rocks on the shear strength of ice-filled
discontinuities, The Cryosphere, 14, 1849–1855, https://doi.org/10.5194/tc-14-1849-2020, 2020.
Marinos, P. and Hoek, E.: Gsi: A Geologically Friendly Tool for Rock Mass
Strength Estimation, in: ISRM International Symposium, Int. Soc. Rock Mech. Rock Eng., Melbourne, Australia, 2000.
Marmy, A., Rajczak, J., Delaloye, R., Hilbich, C., Hoelzle, M., Kotlarski, S., Lambiel, C., Noetzli, J., Phillips, M., Salzmann, N., Staub, B., and Hauck, C.: Semi-automated calibration method for modelling of mountain permafrost evolution in Switzerland, The Cryosphere, 10, 2693–2719,
https://doi.org/10.5194/tc-10-2693-2016, 2016.
Mejía Camones, L. A., Vargas, E. D. A., de Figueiredo, R. P., and
Velloso, R. Q.: Application of the discrete element method for modeling of
rock crack propagation and coalescence in the step-path failure mechanism, Eng. Geol., 153, 80–94, https://doi.org/10.1016/j.enggeo.2012.11.013, 2013.
Mellor, M.: Mechanical properties of rocks at low temperatures, in: 2nd International Conference on Permafrost, 13–28 July 1973, Yakutsk, Siberia, 1973.
Mergili, M., Jaboyedoff, M., Pullarello, J., and Pudasaini, S. P.: Back
calculation of the 2017 Piz Cengalo–Bondo landslide cascade with r.avaflow:
what we can do and what we can learn, Nat. Hazards Earth Syst. Sci., 20,
505–520, https://doi.org/10.5194/nhess-20-505-2020, 2020.
Miller, H.: Der Bau des westlichen Wettersteingebirges, Z. Deutsch.
Geolog. Gesell., 113, 409–425, 1962.
Moore, J. R., Gischig, V., Katterbach, M., and Loew, S.: Air circulation in
deep fractures and the temperature field of an alpine rock slope, Earth Surf. Proc. Land., 36, 1985–1996, https://doi.org/10.1002/esp.2217, 2011.
Murton, J., Kuras, O., Krautblatter, M., Cane, T., Tschofen, D., Uhlemann, S., Schober, S., and Watson, P.: Monitoring rock freezing and thawing by novel geoelectrical and acoustic techniques, J. Geophys. Res.-Eart, 121, 2309–2332, https://doi.org/10.1002/2016JF003948, 2016.
Myhra, K. S., Westermann, S., and Etzelmüller, B.: Modelled Distribution
and Temporal Evolution of Permafrost in Steep Rock Walls Along a Latitudinal
Transect in Norway by CryoGrid 2D, Permafrost Periglac., 28, 172–182,
https://doi.org/10.1002/ppp.1884, 2017.
Nötzli, J.: Modeling transient three-dimensional temperature fields in mountain permafrost, Dissertation, University of Zurich, Zurich, 2008.
Nötzli, J. and Gruber, S.: Transient thermal effects in Alpine permafrost,
The Cryosphere, 3, 85–99, https://doi.org/10.5194/tc-3-85-2009, 2009.
Nötzli, J., Gruber, S., Kohl, T., Salzmann, N., and Haeberli, W.: Three-dimensional distribution and evolution of permafrost temperatures in idealized high-mountain topography, J. Geophys. Res.-Earth, 112, F02S13, https://doi.org/10.1029/2006JF000545, 2007.
Nötzli, J., Gruber, S., and von Poschinger, A.: Modellierung und Messung von Permafrosttemperaturen im Gipfelgrat der Zugspitze, Deutschland, Geogr. Helv., 65, 113–123, https://doi.org/10.5194/gh-65-113-2010, 2010.
Nötzli, J., Pellet, C., and Staub, B. (Eds.): PERMOS 2019, Permafrost in Switzerland 2014/2015 to 2017/2018, Glaciological Report (Permafrost) No. 16–19, Cryospheric Commission of the Swiss Academy of Sciences, 104 pp., https://doi.org/10.13093/permos-rep-2019-16-19, 2019.
Phillips, M., Wolter, A., Lüthi, R., Amann, F., Kenner, R., and Bühler, Y.: Rock slope failure in a recently deglaciated permafrost rock
wall at Piz Kesch (Eastern Swiss Alps), February 2014, Earth Surf. Proc. Land., 42, 426–438, https://doi.org/10.1002/esp.3992, 2017.
Plaesken, R., Keuschnig, M., and Krautblatter, M.: Permafrost rocks and
high-alpine infrastructure. Interrelated, interconnected, interacting, Geomech. Tunnel., 13, 628–633, https://doi.org/10.1002/geot.202000028, 2020.
Poisel, R. and Preh, A.: Rock slope initial failure mechanisms and their
mechanical models, Felsbau, 22, 40–45, 2004.
Ravanel, L. and Deline, P.: La face ouest des Drus (massif du Mont-Blanc):
évolution de l'instabilité d'une paroi rocheuse dans la haute montagne alpine depuis la fin du petit age glaciaire, Géomorphologie, 4, 261–272, 2008.
Ravanel, L. and Deline, P.: Climate influence on rockfalls in high-Alpine
steep rockwalls. The north side of the Aiguilles de Chamonix (Mont Blanc
massif) since the end of the `Little Ice Age', Holocene, 21, 357–365,
https://doi.org/10.1177/0959683610374887, 2011.
Ravanel, L. and Deline, P.: Rockfall Hazard in the Mont Blanc Massif Increased by the Current Atmospheric Warming, in: Engineering Geology for
Society and Territory – Volume 1: Climate Change and Engineering Geology,
Springer International Publishing, Cham, 425–428, 2015.
Ravanel, L., Allignol, F., Deline, P., Gruber, S., and Ravello, M.: Rock falls in the Mont Blanc Massif in 2007 and 2008, Landslides, 7, 493–501,
2010.
Rentsch, W. and Krompholz, G.: Zur Bestimmung elastischer Konstanten durch
Schallgeschwindigkeitsmessungen, Bergakademie – Zeitschrift für Bergbau,
Hüttenwesen und verwandte Wissenschaften, 13, 492–504, 1961.
Sanderson, T. J. O.: Ice Mechanics. Risks to offshore structures, Graham & Trotman, London, 1988.
Sass, O.: Rock moisture measurements. Techniques, results, and implications for weathering, Earth Surf. Proc. Land., 30, 3, 359–374, https://doi.org/10.1002/esp.1214, 2005.
Scandroglio, R., Draebing, D., Offer, M., and Krautblatter, M.: 4D quantification of alpine permafrost degradation in steep rock walls using a laboratory-calibrated electrical resistivity tomography approach, Near Surf. Geophys., 19, 241–260, https://doi.org/10.1002/nsg.12149, 2021.
Schulson, E. M. and Duval, P.: Creep and Fracture of Ice, Cambridge University Press, Cambridge, 2009.
Stead, D., Eberhardt, E., and Coggan, J. S.: Developments in the characterization of complex rock slope deformation and failure using numerical modelling techniques, Eng. Geol., 83, 217–235,
https://doi.org/10.1016/j.enggeo.2005.06.033, 2006.
Supper, R., Ottowitz, D., Jochum, B., Römer, A., Pfeiler, S., Kauer, S.,
Keuschnig, M., and Ita, A.: Geoelectrical monitoring of frozen ground and
permafrost in alpine areas. Field studies and considerations towards an improved measuring technology, Near Surf. Geophys., 12, 93–115,
https://doi.org/10.3997/1873-0604.2013057, 2014.
Tipler, P. A. and Mosca, G.: Physik für Wissenschaftler und Ingenieure,
in: Springer Spektrum, 7th Edn., Springer, Berlin, 2015.
Ulrich, R. and King, L.: Influence of mountain permafrost on construction in
the Zugspitze mountains, Bavarian Alps, Germany, 6th International Conference on Permafrost, 5–9 July 1993, Beijing, China, Chinese Soc. Glaciol. and Geocryol., 1993.
Ulusay, R.: The ISRM Suggested Methods for Rock Characterization, Testing
and Monitoring: 2007–2014, Springer International Publishing, Cham, Heidelberg, New York, Dordrecht, London, 2015.
Ulusay, R. and Karakul, H.: Assessment of basic friction angles of various rock types from Turkey under dry, wet and submerged conditions and some
considerations on tilt testing, Bull. Int. Assoc. Eng. Geol., 75, 1683–1699,
https://doi.org/10.1007/s10064-015-0828-4, 2016.
Voigtländer, A., Scandroglio, R., and Krautblatter, M.: Entwicklung
geotechnischer Felsparameter des Kitzsteinhorner Kalkglimmerschiefers,
Abschlussbericht zum Forschungs- und Entwicklungsvertrag der TU München
und AlpS-GmbH, Munich, 2014.
Walter, F., Amann, F., Kos, A., Kenner, R., Phillips, M., de Preux, A., Huss, M., Tognacca, C., Clinton, J., Diehl, T., and Bonanomi, Y.: Direct observations of a three million cubic meter rock-slope collapse with almost
immediate initiation of ensuing debris flows, Geomorphology, 351, 106933,
https://doi.org/10.1016/j.geomorph.2019.106933, 2020.
Weber, S., Beutel, J., Da Forno, R., Geiger, A., Gruber, S., Gsell, T., Hasler, A., Keller, M., Lim, R., Limpach, P., Meyer, M., Talzi, I., Thiele,
L., Tschudin, C., Vieli, A., Vonder Mühll, D., and Yücel, M.: A decade of detailed observations (2008–2018) in steep bedrock permafrost at
the Matterhorn Hörnligrat (Zermatt, CH), Earth Syst. Sci. Data, 11,
1203–1237, https://doi.org/10.5194/essd-11-1203-2019, 2019.
Welkner, D., Eberhardt, E., and Hermanns, R. L.: Hazard investigation of the
Portillo Rock Avalanche site, central Andes, Chile, using an integrated field mapping and numerical modelling approach, Eng. Geol., 114, 278–297,
https://doi.org/10.1016/j.enggeo.2010.05.007, 2010.
Wyllie, D. C.: Rock slope engineering, in: Civil applications, Taylor & Francis Group, Boca Raton, 2018.
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Short summary
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.
The mechanical response of permafrost degradation on high-mountain rock slope stability has not...
