Articles | Volume 8, issue 3
https://doi.org/10.5194/esurf-8-753-2020
© Author(s) 2020. 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-8-753-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| Highlight paper
| 
11 Sep 2020
Research article | Highlight paper |
| 11 Sep 2020
| 11 Sep 2020
A 6-year lidar survey reveals enhanced rockwall retreat and modified rockfall magnitudes/frequencies in deglaciating cirques
Ingo Hartmeyer
CORRESPONDING AUTHOR
GEORESEARCH Research Institute, Puch bei Hallein, Austria
Markus Keuschnig
GEORESEARCH Research Institute, Puch bei Hallein, Austria
Robert Delleske
GEORESEARCH Research Institute, Puch bei Hallein, Austria
Michael Krautblatter
Chair of
Landslide Research, Technical University of Munich, Munich, Germany
Andreas Lang
Department of Geography and Geology, University of Salzburg, Salzburg, Austria
Lothar Schrott
Department of Geography, University of Bonn, Bonn, Germany
Günther Prasicek
Department of Geography and Geology, University of Salzburg, Salzburg, Austria
Interdisciplinary Centre for Mountain Research, University of
Lausanne, Bramois, Switzerland
Jan-Christoph Otto
Department of Geography and Geology, University of Salzburg, Salzburg, Austria
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We present a unique dataset of repeated electrical resistivity tomography and long-term borehole temperature measurements to investigate the complex seasonal water flow in permafrost rockwalls. Our joint analysis shows that permafrost rocks are subject to enhanced pressurised water flow during the melt period. In addition to slow thermal heat conduction, permafrost rocks are subject to push-like warming events, favouring accelerated permafrost degradation and reduced rockwall stability.
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Processes destabilising recently deglaciated rocks, driving cirque headwall retreat, and putting alpine infrastructure at risk are poorly understood due to scarce in situ data. We monitored fracture deformation at a cirque headwall in the Austria Alps. We found thermo-mechanical expansion and freeze-thaw action as dominant processes for deformation. Our results highlight the importance of liquid water in combination with subzero-temperatures on the destabilisation of glacier headwalls.
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Lionel Benoit, Aurelie Gourdon, Raphaël Vallat, Inigo Irarrazaval, Mathieu Gravey, Benjamin Lehmann, Günther Prasicek, Dominik Gräff, Frederic Herman, and Gregoire Mariethoz
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Andreas Ewald, Ingo Hartmeyer, Markus Keuschnig, Andreas Lang, and Jan-Christoph Otto
The Cryosphere Discuss., https://doi.org/10.5194/tc-2019-42, https://doi.org/10.5194/tc-2019-42, 2019
Preprint withdrawn
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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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Wen Nie, Michael Krautblatter, Kerry Leith, Kurosch Thuro, and Judith Festl
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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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Z. Wang, K. Van Oost, A. Lang, T. Quine, W. Clymans, R. Merckx, B. Notebaert, and G. Govers
Biogeosciences, 11, 873–883, https://doi.org/10.5194/bg-11-873-2014, https://doi.org/10.5194/bg-11-873-2014, 2014
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Earth Surf. Dynam., 1, 45–52, https://doi.org/10.5194/esurf-1-45-2013, https://doi.org/10.5194/esurf-1-45-2013, 2013
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In this paper, we propose a framework for generating risk maps that provide the probabilities of erosion due to river migration. This framework uses concepts from probability theory to learn the river migration model's parameter values from satellite data while taking into account parameter uncertainty. Our analysis shows that such geomorphic risk estimation is more reliable than models that do not explicitly consider various sources of variability and uncertainty.
Steven Y. J. Lai, David Amblas, Aaron Micallef, and Hervé Capart
Earth Surf. Dynam., 12, 621–640, https://doi.org/10.5194/esurf-12-621-2024, https://doi.org/10.5194/esurf-12-621-2024, 2024
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This study explores the creation of submarine canyons and hanging-wall fans on active faults, which can be defined by gravity-dominated breaching and underflow-dominated diffusion processes. The study reveals the self-similarity in canyon–fan long profiles, uncovers Hack’s scaling relationship and proposes a formula to estimate fan volume using canyon length. This is validated by global data from source-to-sink systems, providing insights into deep-water sedimentary processes.
Anuska Narayanan, Sagy Cohen, and John R. Gardner
Earth Surf. Dynam., 12, 581–599, https://doi.org/10.5194/esurf-12-581-2024, https://doi.org/10.5194/esurf-12-581-2024, 2024
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This study investigates the profound impact of deforestation in the Amazon on sediment dynamics. Novel remote sensing data and statistical analyses reveal significant changes, especially in heavily deforested regions, with rapid effects within a year. In less disturbed areas, a 1- to 2-year lag occurs, influenced by natural sediment shifts and human activities. These findings highlight the need to understand the consequences of human activity for our planet's future.
Jacob Hardt, Tim P. Dooley, and Michael R. Hudec
Earth Surf. Dynam., 12, 559–579, https://doi.org/10.5194/esurf-12-559-2024, https://doi.org/10.5194/esurf-12-559-2024, 2024
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We investigate the reaction of salt structures on ice sheet transgressions. We used a series of sandbox models that enabled us to experiment with scaled-down versions of salt bodies from northern Germany. The strongest reactions occurred when large salt pillows were partly covered by the ice load. Subsurface salt structures may play an important role in the energy transition, e.g., as energy storage. Thus, it is important to understand all processes that affect their stability.
Prakash Pokhrel, Mikael Attal, Hugh D. Sinclair, Simon M. Mudd, and Mark Naylor
Earth Surf. Dynam., 12, 515–536, https://doi.org/10.5194/esurf-12-515-2024, https://doi.org/10.5194/esurf-12-515-2024, 2024
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Pebbles become increasingly rounded during downstream transport in rivers due to abrasion. This study quantifies pebble roundness along the length of two Himalayan rivers. We demonstrate that roundness increases with downstream distance and that the rates are dependent on rock type. We apply this to reconstructing travel distances and hence the size of ancient Himalaya. Results show that the ancient river network was larger than the modern one, indicating that there has been river capture.
Jens Martin Turowski, Aaron Bufe, and Stefanie Tofelde
Earth Surf. Dynam., 12, 493–514, https://doi.org/10.5194/esurf-12-493-2024, https://doi.org/10.5194/esurf-12-493-2024, 2024
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Fluvial valleys are ubiquitous landforms, and understanding their formation and evolution affects a wide range of disciplines from archaeology and geology to fish biology. Here, we develop a model to predict the width of fluvial valleys for a wide range of geographic conditions. In the model, fluvial valley width is controlled by the two competing factors of lateral channel mobility and uplift. The model complies with available data and yields a broad range of quantitative predictions.
Daniel J. Ciarletta, Jennifer L. Miselis, Julie C. Bernier, and Arnell S. Forde
Earth Surf. Dynam., 12, 449–475, https://doi.org/10.5194/esurf-12-449-2024, https://doi.org/10.5194/esurf-12-449-2024, 2024
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We reconstructed the evolution of Fire Island, a barrier island in New York, USA, to identify drivers of landscape change. Results reveal Fire Island was once divided into multiple inlet-separated islands with distinct features. Later, inlets closed, and Fire Island’s landscape became more uniform as human activities intensified. The island is now less mobile and less likely to resist and recover from storm impacts and sea level rise. This vulnerability may exist for other stabilized barriers.
Chao Zhou, Xibin Tan, Yiduo Liu, and Feng Shi
Earth Surf. Dynam., 12, 433–448, https://doi.org/10.5194/esurf-12-433-2024, https://doi.org/10.5194/esurf-12-433-2024, 2024
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The drainage-divide stability provides new insights into both the river network evolution and the tectonic and/or climatic changes. Several methods have been proposed to determine the direction of drainage-divide migration. However, how to quantify the migration rate of drainage divides remains challenging. In this paper, we propose a new method to calculate the migration rate of drainage divides from high-resolution topographic data.
Moritz Altmann, Madlene Pfeiffer, Florian Haas, Jakob Rom, Fabian Fleischer, Tobias Heckmann, Livia Piermattei, Michael Wimmer, Lukas Braun, Manuel Stark, Sarah Betz-Nutz, and Michael Becht
Earth Surf. Dynam., 12, 399–431, https://doi.org/10.5194/esurf-12-399-2024, https://doi.org/10.5194/esurf-12-399-2024, 2024
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We show a long-term erosion monitoring of several sections on Little Ice Age lateral moraines with derived sediment yield from historical and current digital elevation modelling (DEM)-based differences. The first study period shows a clearly higher range of variability of sediment yield within the sites than the later periods. In most cases, a decreasing trend of geomorphic activity was observed.
Paul A. Carling
Earth Surf. Dynam., 12, 381–397, https://doi.org/10.5194/esurf-12-381-2024, https://doi.org/10.5194/esurf-12-381-2024, 2024
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Edge rounding in Shap granite glacial erratics is an irregular function of distance from the source outcrop in northern England, UK. Block shape is conservative, evolving according to block fracture mechanics – stochastic and silver ratio models – towards either of two attractor states. Progressive reduction in size occurs for blocks transported at the sole of the ice mass where the blocks are subject to compressive and tensile forces of the ice acting against a bedrock or till surface.
Andrew Hollyday, Maureen E. Raymo, Jacqueline Austermann, Fred Richards, Mark Hoggard, and Alessio Rovere
EGUsphere, https://doi.org/10.5194/egusphere-2023-2099, https://doi.org/10.5194/egusphere-2023-2099, 2024
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Sea level was significantly higher during the Pliocene Epoch, around three million years ago. The present-day elevations of shorelines that formed in the past provide data constraint on the extent of ice sheet melt and the global sea level response under warm Pliocene conditions. In this study, we identify ten escarpments that formed from wavecut erosion during Pliocene times and compare their elevations with model predictions of solid Earth deformation processes to estimate past sea level.
Gary Parker, Chenge An, Michael P. Lamb, Marcelo H. Garcia, Elizabeth H. Dingle, and Jeremy G. Venditti
Earth Surf. Dynam., 12, 367–380, https://doi.org/10.5194/esurf-12-367-2024, https://doi.org/10.5194/esurf-12-367-2024, 2024
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River morphology has traditionally been divided by the size 2 mm. We use dimensionless arguments to show that particles in the 1–5 mm range (i) are the finest range not easily suspended by alluvial flood flows, (ii) are transported preferentially over coarser gravel, and (iii), within limits, are also transported preferentially over sand. We show how fluid viscosity mediates the special status of sediment in this range.
Lindsay Marie Capito, Enrico Pandrin, Walter Bertoldi, Nicola Surian, and Simone Bizzi
Earth Surf. Dynam., 12, 321–345, https://doi.org/10.5194/esurf-12-321-2024, https://doi.org/10.5194/esurf-12-321-2024, 2024
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We propose that the pattern of erosion and deposition from repeat topographic surveys can be a proxy for path length in gravel-bed rivers. With laboratory and field data, we applied tools from signal processing to quantify this periodicity and used these path length estimates to calculate sediment transport using the morphological method. Our results highlight the potential to expand the use of the morphological method using only remotely sensed data as well as its limitations.
Xuxu Wu, Jonathan Malarkey, Roberto Fernández, Jaco H. Baas, Ellen Pollard, and Daniel R. Parsons
Earth Surf. Dynam., 12, 231–247, https://doi.org/10.5194/esurf-12-231-2024, https://doi.org/10.5194/esurf-12-231-2024, 2024
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The seabed changes from flat to rippled in response to the frictional influence of waves and currents. This experimental study has shown that the speed of this change, the size of ripples that result and even whether ripples appear also depend on the amount of sticky mud present. This new classification on the basis of initial mud content should lead to improvements in models of seabed change in present environments by engineers and the interpretation of past environments by geologists.
Andrea D'Alpaos, Davide Tognin, Laura Tommasini, Luigi D'Alpaos, Andrea Rinaldo, and Luca Carniello
Earth Surf. Dynam., 12, 181–199, https://doi.org/10.5194/esurf-12-181-2024, https://doi.org/10.5194/esurf-12-181-2024, 2024
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Sediment erosion induced by wind waves is one of the main drivers of the morphological evolution of shallow tidal environments. However, a reliable description of erosion events for the long-term morphodynamic modelling of tidal systems is still lacking. By statistically characterizing sediment erosion dynamics in the Venice Lagoon over the last 4 centuries, we set up a novel framework for a synthetic, yet reliable, description of erosion events in tidal systems.
Davide Tognin, Andrea D'Alpaos, Luigi D'Alpaos, Andrea Rinaldo, and Luca Carniello
Earth Surf. Dynam., 12, 201–218, https://doi.org/10.5194/esurf-12-201-2024, https://doi.org/10.5194/esurf-12-201-2024, 2024
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Reliable quantification of sediment transport processes is necessary to understand the fate of shallow tidal environments. Here we present a framework for the description of suspended sediment dynamics to quantify deposition in the long-term modelling of shallow tidal systems. This characterization, together with that of erosion events, allows one to set up synthetic, yet reliable, models for the long-term evolution of tidal landscapes.
Emma L. S. Graf, Hugh D. Sinclair, Mikaël Attal, Boris Gailleton, Basanta Raj Adhikari, and Bishnu Raj Baral
Earth Surf. Dynam., 12, 135–161, https://doi.org/10.5194/esurf-12-135-2024, https://doi.org/10.5194/esurf-12-135-2024, 2024
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Using satellite images, we show that, unlike other examples of earthquake-affected rivers, the rivers of central Nepal experienced little increase in sedimentation following the 2015 Gorkha earthquake. Instead, a catastrophic flood occurred in 2021 that buried towns and agricultural land under up to 10 m of sediment. We show that intense storms remobilised glacial sediment from high elevations causing much a greater impact than flushing of earthquake-induced landslides.
Mohamad Nasr, Adele Johannot, Thomas Geay, Sebastien Zanker, Jules Le Guern, and Alain Recking
Earth Surf. Dynam., 12, 117–134, https://doi.org/10.5194/esurf-12-117-2024, https://doi.org/10.5194/esurf-12-117-2024, 2024
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Hydrophones are used to monitor sediment transport in the river by listening to the acoustic noise generated by particle impacts on the riverbed. However, this acoustic noise is modified by the river flow and can cause misleading information about sediment transport. This article proposes a model that corrects the measured acoustic signal. Testing the model showed that the corrected signal is better correlated with bedload flux in the river.
Byungho Kang, Rusty A. Feagin, Thomas Huff, and Orencio Durán Vinent
Earth Surf. Dynam., 12, 105–115, https://doi.org/10.5194/esurf-12-105-2024, https://doi.org/10.5194/esurf-12-105-2024, 2024
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We provide a detailed characterization of the frequency, intensity and duration of flooding events at a site along the Texas coast. Our analysis demonstrates the suitability of relatively simple wave run-up models to estimate the frequency and intensity of coastal flooding. Our results validate and expand a probabilistic model of coastal flooding driven by wave run-up that can then be used in coastal risk management in response to sea level rise.
Shunsuke Oya, Fumitoshi Imaizumi, and Shoki Takayama
Earth Surf. Dynam., 12, 67–86, https://doi.org/10.5194/esurf-12-67-2024, https://doi.org/10.5194/esurf-12-67-2024, 2024
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The monitoring of pore water pressure in fully and partly saturated debris flows was performed at Ohya landslide scar, central Japan. The pore water pressure in some partly saturated flows greatly exceeded the hydrostatic pressure. The depth gradient of the pore water pressure in the lower part of the flow was generally higher than the upper part of the flow. We conclude that excess pore water pressure is present in many debris flow surges and is an important mechanism in debris flow behavior.
Gabriele Barile, Marco Redolfi, and Marco Tubino
Earth Surf. Dynam., 12, 87–103, https://doi.org/10.5194/esurf-12-87-2024, https://doi.org/10.5194/esurf-12-87-2024, 2024
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River bifurcations often show the closure of one branch (avulsion), whose causes are still poorly understood. Our model shows that when one branch stops transporting sediments, the other considerably erodes and captures much more flow, resulting in a self-sustaining process. This phenomenon intensifies when increasing the length of the branches, eventually leading to branch closure. This work may help to understand when avulsions occur and thus to design sustainable river restoration projects.
Dieter Rickenmann
Earth Surf. Dynam., 12, 11–34, https://doi.org/10.5194/esurf-12-11-2024, https://doi.org/10.5194/esurf-12-11-2024, 2024
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Field measurements of the bedload flux with a high temporal resolution in a steep mountain stream were used to analyse the transport fluctuations as a function of the flow conditions. The disequilibrium ratio, a proxy for the solid particle concentration in the flow, was found to influence the sediment transport behaviour, and above-average disequilibrium conditions – associated with a larger sediment availability on the streambed – substantially affect subsequent transport conditions.
Byungho Kang, Rusty A. Feagin, Thomas Huff, and Orencio Durán Vinent
Earth Surf. Dynam., 12, 1–10, https://doi.org/10.5194/esurf-12-1-2024, https://doi.org/10.5194/esurf-12-1-2024, 2024
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Coastal flooding can cause significant damage to coastal ecosystems, infrastructure, and communities and is expected to increase in frequency with the acceleration of sea level rise. In order to respond to it, it is crucial to measure and model their frequency and intensity. Here, we show deep-learning techniques can be successfully used to automatically detect flooding events from complex coastal imagery, opening the way to real-time monitoring and data acquisition for model development.
Nil Carrion-Bertran, Albert Falqués, Francesca Ribas, Daniel Calvete, Rinse de Swart, Ruth Durán, Candela Marco-Peretó, Marta Marcos, Angel Amores, Tim Toomey, Àngels Fernández-Mora, and Jorge Guillén
EGUsphere, https://doi.org/10.5194/egusphere-2023-2721, https://doi.org/10.5194/egusphere-2023-2721, 2023
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The sensitivity to the wave and sea-level forcing sources in predicting a 6-month embayed beach evolution is assessed using two different morphodynamic models. After a successful model calibration using in-situ data, other sources are applied. The wave source choice is critical: hindcast data provide wrong results due to an angle bias whilst the correct dynamics is recovered with the wave conditions from an offshore buoy. The use of different sea-level sources gives no significant differences.
Judith Y. Zomer, Bart Vermeulen, and Antonius J. F. Hoitink
Earth Surf. Dynam., 11, 1283–1298, https://doi.org/10.5194/esurf-11-1283-2023, https://doi.org/10.5194/esurf-11-1283-2023, 2023
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Secondary bedforms that are superimposed on large, primary dunes likely play a large role in fluvial systems. This study demonstrates that they can be omnipresent. Especially during peak flows, they grow large and can have steep slopes, likely affecting flood risk and sediment transport dynamics. Primary dune morphology determines whether they continuously or intermittently migrate. During discharge peaks, the secondary bedforms can become the dominant dune scale.
Matthew C. Morriss, Benjamin Lehmann, Benjamin Campforts, George Brencher, Brianna Rick, Leif S. Anderson, Alexander L. Handwerger, Irina Overeem, and Jeffrey Moore
Earth Surf. Dynam., 11, 1251–1274, https://doi.org/10.5194/esurf-11-1251-2023, https://doi.org/10.5194/esurf-11-1251-2023, 2023
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In this paper, we investigate the 28 June 2022 collapse of the Chaos Canyon landslide in Rocky Mountain National Park, Colorado, USA. We find that the landslide was moving prior to its collapse and took place at peak spring snowmelt; temperature modeling indicates the potential presence of permafrost. We hypothesize that this landslide could be part of the broader landscape evolution changes to alpine terrain caused by a warming climate, leading to thawing alpine permafrost.
Christopher Tomsett and Julian Leyland
Earth Surf. Dynam., 11, 1223–1249, https://doi.org/10.5194/esurf-11-1223-2023, https://doi.org/10.5194/esurf-11-1223-2023, 2023
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Vegetation influences how rivers change through time, yet the way in which we analyse vegetation is limited. Current methods collect detailed data at the individual plant level or determine dominant vegetation types across larger areas. Herein, we use UAVs to collect detailed vegetation datasets for a 1 km length of river and link vegetation properties to channel evolution occurring within the study site, providing a new method for investigating the influence of vegetation on river systems.
Rabab Yassine, Ludovic Cassan, Hélène Roux, Olivier Frysou, and François Pérès
Earth Surf. Dynam., 11, 1199–1221, https://doi.org/10.5194/esurf-11-1199-2023, https://doi.org/10.5194/esurf-11-1199-2023, 2023
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Predicting river morphology evolution is very complicated, especially for mountain rivers with complex morphologies such as the Lac des Gaves reach in France. A 2D hydromorphological model was developed to reproduce the channel's evolution and provide reliable volumetric predictions while revealing the challenge of choosing adapted sediment transport and friction laws. Our model can provide decision-makers with reliable predictions to design suitable restoration measures for this reach.
Daisuke Harada and Shinji Egashira
Earth Surf. Dynam., 11, 1183–1197, https://doi.org/10.5194/esurf-11-1183-2023, https://doi.org/10.5194/esurf-11-1183-2023, 2023
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This paper proposes a method for describing large-wood behavior in terms of the convection equation and the storage equation, which are associated with active sediment erosion and deposition. Compared to the existing Lagrangian method, the proposed method can easily simulate the behavior of large wood in the flow field with active sediment transport. The method is applied to the flood disaster in the Akatani River in 2017, and the 2-D flood flow computations are successfully performed.
Hemanti Sharma and Todd A. Ehlers
Earth Surf. Dynam., 11, 1161–1181, https://doi.org/10.5194/esurf-11-1161-2023, https://doi.org/10.5194/esurf-11-1161-2023, 2023
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Seasonality in precipitation (P) and vegetation (V) influences catchment erosion (E), although which factor plays the dominant role is unclear. In this study, we performed a sensitivity analysis of E to P–V seasonality through numerical modeling. Our results suggest that P variations strongly influence seasonal variations in E, while the effect of seasonal V variations is secondary but significant. This is more pronounced in moderate and least pronounced in extreme environmental settings.
Eduardo Gomez-de la Peña, Giovanni Coco, Colin Whittaker, and Jennifer Montaño
Earth Surf. Dynam., 11, 1145–1160, https://doi.org/10.5194/esurf-11-1145-2023, https://doi.org/10.5194/esurf-11-1145-2023, 2023
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Predicting how shorelines change over time is a major challenge in coastal research. We here have turned to deep learning (DL), a data-driven modelling approach, to predict the movement of shorelines using observations from a camera system in New Zealand. The DL models here implemented succeeded in capturing the variability and distribution of the observed shoreline data. Overall, these findings indicate that DL has the potential to enhance the accuracy of current shoreline change predictions.
Christoph Rettinger, Mina Tabesh, Ulrich Rüde, Stefan Vollmer, and Roy M. Frings
Earth Surf. Dynam., 11, 1097–1115, https://doi.org/10.5194/esurf-11-1097-2023, https://doi.org/10.5194/esurf-11-1097-2023, 2023
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Packing models promise efficient and accurate porosity predictions of fluvial sediment deposits. In this study, three packing models were reviewed, calibrated, and validated. Only two of the models were able to handle the continuous and large grain size distributions typically encountered in rivers. We showed that an extension by a cohesion model is necessary and developed guidelines for successful predictions in different rivers.
Alexander A. Ermilov, Gergely Benkő, and Sándor Baranya
Earth Surf. Dynam., 11, 1061–1095, https://doi.org/10.5194/esurf-11-1061-2023, https://doi.org/10.5194/esurf-11-1061-2023, 2023
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A novel, artificial-intelligence-based riverbed sediment analysis methodology is introduced that uses underwater images to identify the characteristic sediment classes. The main novelties of the procedure are as follows: underwater images are used, the method enables continuous mapping of the riverbed along the measurement vessel’s route contrary to conventional techniques, the method is cost-efficient, and the method works without scaling.
Kelly M. Sanks, John B. Shaw, Samuel M. Zapp, José Silvestre, Ripul Dutt, and Kyle M. Straub
Earth Surf. Dynam., 11, 1035–1060, https://doi.org/10.5194/esurf-11-1035-2023, https://doi.org/10.5194/esurf-11-1035-2023, 2023
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River deltas encompass many depositional environments (like channels and wetlands) that interact to produce coastal environments that change through time. The processes leading to sedimentation in wetlands are often neglected from physical delta models. We show that wetland sedimentation constrains flow to the channels, changes sedimentation rates, and produces channels more akin to field-scale deltas. These results have implications for the management of these vulnerable coastal landscapes.
Katharina Wetterauer and Dirk Scherler
Earth Surf. Dynam., 11, 1013–1033, https://doi.org/10.5194/esurf-11-1013-2023, https://doi.org/10.5194/esurf-11-1013-2023, 2023
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In glacial landscapes, debris supply rates vary spatially and temporally. Rockwall erosion rates derived from cosmogenic 10Be concentrations in medial moraine debris at five Swiss glaciers around Pigne d'Arolla indicate an increase in erosion from the end of the Little Ice Age towards deglaciation but temporally more stable rates over the last ∼100 years. Rockwall erosion rates are higher where rockwalls are steep and north-facing, suggesting a potential slope and temperature control.
Sam Anderson, Nicole Gasparini, and Joel Johnson
Earth Surf. Dynam., 11, 995–1011, https://doi.org/10.5194/esurf-11-995-2023, https://doi.org/10.5194/esurf-11-995-2023, 2023
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We measured rock strength and amount of fracturing in the two different rock types, sandstones and carbonates, in Last Chance Canyon, New Mexico, USA. Where there is more carbonate bedrock, hills and channels steepen in Last Chance Canyon. This is because the carbonate-type bedrock tends to be more thickly bedded, is less fractured, and is stronger. The carbonate bedrock produces larger boulders than the sandstone bedrock, which can protect the more fractured sandstone bedrock from erosion.
Jens M. Turowski, Gunnar Pruß, Anne Voigtländer, Andreas Ludwig, Angela Landgraf, Florian Kober, and Audrey Bonnelye
Earth Surf. Dynam., 11, 979–994, https://doi.org/10.5194/esurf-11-979-2023, https://doi.org/10.5194/esurf-11-979-2023, 2023
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Rivers can cut into rocks, and their strength modulates the river's erosion rates. Yet, which properties of the rock control its response to erosive action is poorly understood. Here, we describe parallel experiments to measure rock erosion rates under fluvial impact erosion and the rock's geotechnical properties such as fracture strength, elasticity, and density. Erosion rates vary over a factor of a million between different rock types. We use the data to improve current theory.
Koji Ohata, Hajime Naruse, and Norihiro Izumi
Earth Surf. Dynam., 11, 961–977, https://doi.org/10.5194/esurf-11-961-2023, https://doi.org/10.5194/esurf-11-961-2023, 2023
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We investigated the influence of sediment transport modes on the formation of bedforms using theoretical analysis. The results of the theoretical analysis were verified with published data of plane beds obtained by fieldwork and laboratory experiments. We found that suspended sand particles can promote the formation of plane beds on a fine-grained bed, which suggests that the presence of suspended particles suppresses the development of dunes under submarine sediment-laden gravity currents.
Matan Ben-Asher, Florence Magnin, Sebastian Westermann, Josué Bock, Emmanuel Malet, Johan Berthet, Ludovic Ravanel, and Philip Deline
Earth Surf. Dynam., 11, 899–915, https://doi.org/10.5194/esurf-11-899-2023, https://doi.org/10.5194/esurf-11-899-2023, 2023
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Quantitative knowledge of water availability on high mountain rock slopes is very limited. We use a numerical model and field measurements to estimate the water balance at a steep rock wall site. We show that snowmelt is the main source of water at elevations >3600 m and that snowpack hydrology and sublimation are key factors. The new information presented here can be used to improve the understanding of thermal, hydrogeological, and mechanical processes on steep mountain rock slopes.
Jessica Droujko, Srividya Hariharan Sudha, Gabriel Singer, and Peter Molnar
Earth Surf. Dynam., 11, 881–897, https://doi.org/10.5194/esurf-11-881-2023, https://doi.org/10.5194/esurf-11-881-2023, 2023
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We combined data from satellite images with data measured from a kayak in order to understand the propagation of fine sediment in the Vjosa River. We were able to find some storm-activated and some permanent sources of sediment. We also estimated how much fine sediment is carried into the Adriatic Sea by the Vjosa River: approximately 2.5 Mt per year, which matches previous findings. With our work, we hope to show the potential of open-access satellite images.
Kate C. P. Leary, Leah Tevis, and Mark Schmeeckle
Earth Surf. Dynam., 11, 835–847, https://doi.org/10.5194/esurf-11-835-2023, https://doi.org/10.5194/esurf-11-835-2023, 2023
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Despite the importance of bedforms (e.g., ripples, dunes) to sediment transport, the details of sediment transport on a sub-bedform scale are poorly understood. This paper investigates sediment transport in the downstream and cross-stream directions over bedforms with straight crests. We find that the patterns of bedload transport are highly variable on the sub-bedform scale, which is important for our understanding of the evolution of bedforms with complex crest geometries.
Paul A. Carling, John D. Jansen, Teng Su, Jane Lund Andersen, and Mads Faurschou Knudsen
Earth Surf. Dynam., 11, 817–833, https://doi.org/10.5194/esurf-11-817-2023, https://doi.org/10.5194/esurf-11-817-2023, 2023
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Many steep glaciated rock walls collapsed when the Ice Age ended. How ice supports a steep rock wall until the ice decays is poorly understood. A collapsed rock wall was surveyed in the field and numerically modelled. Cosmogenic exposure dates show it collapsed and became ice-free ca. 18 ka ago. The model showed that the rock wall failed very slowly because ice was buttressing the slope. Dating other collapsed rock walls can improve understanding of how and when the last Ice Age ended.
Paul A. Jarvis, Clement Narteau, Olivier Rozier, and Nathalie M. Vriend
Earth Surf. Dynam., 11, 803–815, https://doi.org/10.5194/esurf-11-803-2023, https://doi.org/10.5194/esurf-11-803-2023, 2023
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Sand dune migration velocity is inversely proportional to dune size. Consequently, smaller, faster dunes can collide with larger, slower downstream dunes. Such collisions can result in either coalescence or ejection, whereby the dunes exchange mass but remain separate. Our numerical simulations show that the outcome depends probabilistically on the dune size ratio, which we describe through an empirical function. Our numerical predictions compare favourably against experimental observations.
Adrian Ringenbach, Peter Bebi, Perry Bartelt, Andreas Rigling, Marc Christen, Yves Bühler, Andreas Stoffel, and Andrin Caviezel
Earth Surf. Dynam., 11, 779–801, https://doi.org/10.5194/esurf-11-779-2023, https://doi.org/10.5194/esurf-11-779-2023, 2023
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Swiss researchers carried out repeated rockfall experiments with rocks up to human sizes in a steep mountain forest. This study focuses mainly on the effects of the rock shape and lying deadwood. In forested areas, cubic-shaped rocks showed a longer mean runout distance than platy-shaped rocks. Deadwood especially reduced the runouts of these cubic rocks. The findings enrich standard practices in modern rockfall hazard zoning assessments and strongly urge the incorporation of rock shape effects.
Colin K. Bloom, Corinne Singeisen, Timothy Stahl, Andrew Howell, and Chris Massey
Earth Surf. Dynam., 11, 757–778, https://doi.org/10.5194/esurf-11-757-2023, https://doi.org/10.5194/esurf-11-757-2023, 2023
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Earthquakes can cause damaging coastal cliff retreat, but we have a limited understanding of how these infrequent events influence multidecadal retreat. This makes hazard planning a challenge. In this study, we use historic aerial images to measure coastal cliff-top retreat at a site in New Zealand. We find that earthquakes account for close to half of multidecadal retreat at this site, and our results have helped us to develop tools for estimating the influence of earthquakes at other sites.
Rishitosh K. Sinha, Dwijesh Ray, Tjalling De Haas, Susan J. Conway, and Axel Noblet
Earth Surf. Dynam., 11, 713–730, https://doi.org/10.5194/esurf-11-713-2023, https://doi.org/10.5194/esurf-11-713-2023, 2023
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Our detailed investigation of Martian gullies formed in different substrates in 29 craters distributed between 30°–75° S latitude suggests that they can be differentiated from one another in terms of (1) morphology and length of alcoves and (2) mean gradient of the gully fans. The comparison between the Melton ratio, alcove length, and fan gradient of Martian and terrestrial gullies suggests that Martian gullies were likely formed by terrestrial debris-flow-like processes in the past.
Christopher J. Skinner and Thomas J. Coulthard
Earth Surf. Dynam., 11, 695–711, https://doi.org/10.5194/esurf-11-695-2023, https://doi.org/10.5194/esurf-11-695-2023, 2023
Short summary
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Landscape evolution models allow us to simulate the way the Earth's surface is shaped and help us to understand relevant processes, in turn helping us to manage landscapes better. The models typically represent the land surface using a grid of square cells of equal size, averaging heights in those squares. This study shows that the size chosen by the modeller for these grid cells is important, with larger sizes making sediment output events larger but less frequent.
Cited articles
Abellán, A., Calvet, J., Vilaplana, J. M., and Blanchard, J.: Detection
and spatial prediction of rockfalls by means of terrestrial laser scanner
monitoring, Geomorphology, 119, 162–171, 2010.
Abellán, A., Vilaplana, J. M., Calvet, J., García-Sellés, D., and Asensio, E.: Rockfall monitoring by Terrestrial Laser Scanning – case study of the basaltic rock face at Castellfollit de la Roca (Catalonia, Spain), Nat. Hazards Earth Syst. Sci., 11, 829–841, https://doi.org/10.5194/nhess-11-829-2011, 2011.
Åkerman, H. J.: Notes on chemical weathering, Kapp Linné,
Spitsbergen, Fourth International Permafrost Conference Proceedings, 10–15, Fairbanks, Alaska, USA, 18–22 July 1983.
Allen, S. K., Cox, S. C., and Owens, I. F.: Rock avalanches and other
landslides in the central Southern Alps of New Zealand: a regional study
considering possible climate change impacts, Landslides, 8, 33–48, 2011.
Andrews, J. T. and LeMasurier, W. E.: Rates of Quaternary Glacial Erosion
and Corrie Formation, Marie Byrd Land, Antarctica. Geology, 1, 75–80,
1973.
Arenson, L. U., Philips, M., and Springman, S. M.: Geotechnical
considerations and technical solutions for infrastructure in mountain
permafrost, in New Permafrost and Glacier Research, edited by: Krugger, M.
I. and Stern, H. P., Nova Science Publishers, New York, USA, 3–50, 2009.
Ballantyne, C. K. and Benn, D. I.: Paraglacial Slope Adjustment and
Resedimentation Following Recent Glacier Retreat, Fabergstolsdalen, Norway,
Arct. Alp. Res., 26, 255–269, 1994.
Ballantyne, C. K.: Paraglacial geomorphology, Quaternary Sci. Rev., 21,
1935–2017, 2002.
Ballantyne, C. K.: Periglacial Geomorphology, John Wiley and Sons,
Chichester, 2018.
Barlow, J., Lim, M., Rosser, N., Petley, D., Brain, M., Norman, E., and
Geer, M.: Modeling cliff erosion using negative power law scaling of
rockfalls, Geomorphology, 139–140, 416–424, 2012.
Barr, I. D. and Spagnolo, M.: Palaeoglacial and palaeoclimatic conditions in
the NW Pacific, as revealed by a morphometric analysis of cirques upon the
Kamchatka Peninsula, Geomorphology, 192, 15–29, 2013.
Barr, I. D. and Spagnolo, M.: Glacial cirques as palaeoenvironmental
indicators: their potential and limitations, Earth-Sci. Rev., 151, 48–78,
2015.
Barsch, D.: Eine Abschätzung von Schuttproduktion und Schutttransport im
Bereich aktiver Blockgletscher der Schweizer Alpen, Z. Geomorphol., 28,
148–160, 1977.
Benn, D. I. and Evans, D. J. A.: Glaciers & Glaciation, Routledge Taylor
& Francis Group, London and New York, 2010.
Bennett, M. R. and Glasser, N. F.: Glacial Geology, Wiley-Blackwell,
Chichester, UK, 2009.
Bennett, G. L., Molnar, P., Eisenbeiss, H., and McArdell, B. W.: Erosional
power in the Swiss Alps: characterization of slope failure in the Illgraben,
Earth Surf. Proc. Land., 37, 1627–1640, 2012.
Bennett, G. L., Molnar, P., McArdell, B. W., and Burlando, P.: A
probabilistic sediment cascade model of sediment transfer in the Illgraben,
Water Resour. Res., 50, 1225–1244, 2014.
Bieniawski, Z. T.: Classification of Rock Masses for Engineering: The RMR
System and Future Trends, in Comprehensive rock engineering, Principles,
practice & projects, edited by: Hudson, J. A. and Brown E. T., First
Edition, Pergamon Press, New York, USA, 553–573, 1993.
Blöschl, G. and Sivapalan, M.: Scale issues in hydrological modelling: A
review, Hydrol. Process., 9, 251–290, 1995.
Bommer, C., Phillips, M., and Arenson, L. U.: Practical recommendations for
planning, constructing and maintaining infrastructure in mountain
permafrost, Permafrost Periglac., 21, 97–104, 2010.
Brocklehurst, S. H. and Whipple, K. X.: Glacial erosion and relief
production in the Eastern Sierra Nevada, California, Geomorphology, 42,
1–24, 2002.
Brook, M. S., Kirkbride, M. P., and Brock, B. W.: Cirque development in a
steadily uplifting range: rates of erosion and long-term morphometric change
in alpine cirques in the Ben Ohau Range, New Zealand, Earth Surf. Proc. Land., 31, 1167–1175, 2006.
Brunetti, M. T., Guzzetti, F., and Rossi, M.: Probability distributions of landslide volumes, Nonlin. Processes Geophys., 16, 179–188, https://doi.org/10.5194/npg-16-179-2009, 2009.
Chen, Y. and Medioni, G.: Object modelling by registration of multiple range
images, Image Vision Comput., 10, 145–155, 1992.
Clauset, A., Shalizi, C. R., and Newman, M. E. J.: Power-Law Distributions
in Empirical Data, Siam. Rev., 51, 661–703, 2009.
Cornelius, H. and Clar, E.: Erläuterungen zur geologischen Karte des
Glocknergebietes, Geologische Bundesanstalt, Vienna, 32 pp., 1935.
Cossart, E., Braucher, R., Fort, M., Bourlès, D. L., and Carcaillet, J.:
Slope instability in relation to glacial debuttressing in alpine areas
(Upper Durance catchment, southeastern France): Evidence from field data and
10Be cosmic ray exposure ages, Geomorphology, 95, 3–26, 2008.
Crest, Y., Delmas, M., Braucher, R., Gunnell, Y., and Calvet, M.: Cirques
have growth spurts during deglacial and interglacial periods: Evidence from
10Be and 26Al nuclide inventories in the central and eastern Pyrenees,
Geomorphology, 278, 60–77, 2017.
Crozier, M. J.: The frequency and magnitude of geomorphic processes and
landform behaviour, Zeitschrift für Geomorphologie N.F. Supplement
Volumes, 115, 35–50, 1999.
de Haas, T., Conway, S. J., and Krautblatter, M.: Recent (Late Amazonian)
enhanced backweathering rates on Mars: Paracratering evidence from gully
alcoves, J. Geophys. Res.-Planet., 120, 2169–2189, 2015.
Delmas, M., Calvet, M., and Gunnell, Y.: Variability of Quaternary glacial
erosion rates – A global perspective with special reference to the Eastern
Pyrenees, Quaternary Sci. Rev., 28, 484–498, 2009.
Delmas, M., Gunnell, Y., and Calvet, M.: A critical appraisal of allometric
growth among alpine cirques based on multivariate statistics and spatial
analysis, Geomorphology, 228, 637–652, 2015.
Densmore, A. L., Anderson, R. S., McAdoo, B. G., and Ellis, M. A.: Hillslope
Evolution by Bedrock Landslides, Science, 275, 369–372, 1997.
Derron, M.-H. and Jaboyedoff, M.: Preface “LIDAR and DEM techniques for landslides monitoring and characterization”, Nat. Hazards Earth Syst. Sci., 10, 1877–1879, https://doi.org/10.5194/nhess-10-1877-2010, 2010.
Dionne, J. C. and Michaud, Y. : Note sur 1'altération chimique en milieu
périglaciaire, Hudsonie, Québec subarctique, Revue de Geomorphologie
Dynamique, 35, 81–92, 1986.
Draebing, D. and Krautblatter, M.: The Efficacy of Frost Weathering
Processes in Alpine Rockwalls, Geophys. Res. Lett., 46, 6516–6524, 2019.
Dussauge-Peisser, C., Helmstetter, A., Grasso, J.-R., Hantz, D., Desvarreux, P., Jeannin, M., and Giraud, A.: Probabilistic approach to rock fall hazard assessment: potential of historical data analysis, Nat. Hazards Earth Syst. Sci., 2, 15–26, https://doi.org/10.5194/nhess-2-15-2002, 2002.
Dussauge, C., Grasso, J.-R., and Helmstetter, A.: Statistical analysis of
rockfall volume distributions: Implications for rockfall dynamics, J. Geophys. Res.-Sol. Ea.: Solid Earth, 108, 2003.
Evans, I. S.: Process and form in the erosion of glaciated mountains, in
Process and Form in Geomorphology, edited by: Stoddart, D. R., Routledge,
London, UK, 145–174, 1997.
Evans, I. S.: Allometric development of glacial cirque form: Geological,
relief and regional effects on the cirques of Wales, Geomorphology, 80,
245–266, 2006.
Ewald, A., Hartmeyer, I., Keuschnig, M., Lang, A., and Otto, J.-C.: Fracture
Dynamics In An Unstable, Deglaciating Headwall, Kitzsteinhorn, Austria, EGU
General Assembly, Vienna, Austria, 7–12 April 2019, 2019.
Federici, P. R. and Spagnolo, M.: Morphometric analysis on the size, shape
and areal distribution of glacial cirques in the maritime alps (western
french-italian alps), Geogr. Ann. A., 86, 235–248, 2004.
Fischer, A., Olefs, M., and Abermann, J.: Glaciers, snow and ski tourism in
Austria's changing climate, Ann. Glaciol., 52, 89-96, 2011.
Fischer, A., Patzelt, G., Achrainer, M., Groß, G., Lieb, G. K.,
Kellerer-Pirklbauer A., and Bendler G.: Gletscher im Wandel: 125 Jahre
Gletschermessdienst des Alpenvereins, Springer Spektrum, Berlin, Heidelberg,
Germany, 2018.
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., 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.
Francou, B.: L'eboulisation en Haute Montagne (Alpes, Andes), Contribution
à l'etude du systeme corniche-eboulis en milieu periglaciaire, These
d'Etat, Editec, Caen, France, 696 pp., 1988.
Gardner, J. S.: Evidence for Headwall Weathering Zones, Boundary Glacier,
Canadian Rocky Mountains, J. Glaciol., 33, 60–67, 1987.
Gillespie, C. S.: Fitting Heavy Tailed Distributions: The poweRlaw Package,
J. Stat. Softw., 64, 2015.
Grämiger, L., Moore, J. R., Gischig, V. S., and Loew, S.:
Thermomechanical Stresses Drive Damage of Alpine Valley Rock Walls During
Repeat Glacial Cycles, J. Geophys. Res.-Earth, 123, 2620–2646, 2018.
Grout, M.: Amount and rate of Holocene cirque erosion, Northern Sangre de
Cristo Mountains, Colorado, Geological Society of America Abstracts with
Programs, 11, 273–274, 1979.
Guthrie, R. H. and Evans, S. G.: Work, persistence, and formative events:
The geomorphic impact of landslides, Geomorphology, 88, 266–275, 2007.
Guzzetti, F., Reichenbach, P., and Wieczorek, G. F.: Rockfall hazard and risk assessment in the Yosemite Valley, California, USA, Nat. Hazards Earth Syst. Sci., 3, 491–503, https://doi.org/10.5194/nhess-3-491-2003, 2003.
Hales, T. C. and Roering, J. J.: Climate-controlled variations in scree
production, Southern Alps, New Zealand, Geology, 33, 701–704, 2005.
Hallet, B.: Glacial Abrasion and Sliding: their Dependence on the Debris
Concentration in Basal Ice, Ann. Glaciol., 2, 23–28, 1981.
Hartmeyer, I., Keuschnig, M., and Schrott, L.: A scale-oriented approach for
the long-term monitoring of ground thermal conditions in permafrost-affected
rock faces, Kitzsteinhorn, Hohe Tauern Range, Austria, Austrian J. Earth Sci., 105, 128–139, 2012.
Hartmeyer, I., Delleske, R., Keuschnig, M., Krautblatter, M., Lang, A., Schrott, L., and Otto, J.-C.: Current glacier recession causes significant rockfall increase: the immediate paraglacial response of deglaciating cirque walls, Earth Surf. Dynam., 8, 729–751, https://doi.org/10.5194/esurf-8-729-2020, 2020a.
Hartmeyer, I., Delleske, R., Keuschnig, M., and Krautblatter, M.: Rockfall Source Areas, Kitzsteinhorn, Austria (2011–2017), mediaTUM, https://doi.org/10.14459/2020mp1540134, 2020b.
Heckmann, T., Bimböse, M., Krautblatter, M., Haas, F., Becht, M., and
Morche, D.: From geotechnical analysis to quantification and modelling using
LiDAR data: a study on rockfall in the Reintal catchment, Bavarian Alps,
Germany, Earth Surf. Proc. Land., 37, 119–133, 2012.
Heim, A.: Bergsturz und Menschenleben, Beiblatt zur Viertelsjahrschrift der
Naturforschenden Gesellschaft Zürich 77, 218 pp., 1932.
Heimsath, A. M., and McGlynn, R.: Quantifying periglacial erosion in the
Nepal high Himalaya, Geomorphology, 97, 5–23, 2008.
Hicks, D. M., McSaveney, M. J., and Chinn, T. J. H.: Sedimentation in
Proglacial Ivory Lake, Southern Alps, New Zealand, Arct. Alp. Res., 22,
26–42, 1990.
Hoeck, V., Pestal, G., Brandmaier, P., Clar, E., Cornelius, H., Frank, W.,
Matl, H., Neumayr, P., Petrakakis, K., Stadlmann, T., and Steyrer, H.:
Geologische Karte der Republik Österreich, Blatt 153 Großglockner,
Geologische Bundesanstalt, Vienna, 1994.
Holm, K., Bovis, M., and Jakob, M.: The landslide response of alpine basins
to post-Little Ice Age glacial thinning and retreat in southwestern British
Columbia, Geomorphology, 57, 201–216, 2004.
Hooke, R. L.: Positive feedbacks associated with erosion of glacial cirques
and overdeepenings, Geol. Soc. Am. Bull., 103, 1104–1108, 1991.
Hovius, N., Stark, C. P., and Allen, P. A.: Sediment flux from a mountain
belt derived by landslide mapping, Geology, 25, 231–234, 1997.
Humlum, O.: The geomorphic significance of rock glaciers: estimates of rock
glacier debris volumes and headwall recession rates in West Greenland,
Geomorphology, 35, 41–67, 2000.
Hungr, O., Evans, S. G., and Hazzard, J.: Magnitude and frequency of rock
falls and rock slides along the main transportation corridors of
southwestern British Columbia, Can. Geotech. J., 36, 224–238, 1999.
Iverson, N. R.: Potential effects of subglacial water-pressure fluctuations
on quarrying, J. Glaciol., 37, 27–36, 1991.
Jaeckli, H.: Gegenwartsgeologie des bündnerischen Rheingebiets, ein
Beitrag zur exogenen Dynamik alpiner Gebirgslandschaften, Beitraege zur
Geologie der Schweiz, Geotechnische Serie 36, 136 pp., 1957.
Johnson, W. D.: The Profile of Maturity in Alpine Glacial Erosion, J. Geol., 12, 569–578, 1904.
Kenner, R., Phillips, M., Danioth, C., Denier, C., Thee, P., and Zgraggen,
A.: Investigation of rock and ice loss in a recently deglaciated mountain
rock wall using terrestrial laser scanning: Gemsstock, Swiss Alps, Cold Reg.
Sci. Technol., 67, 157–164, 2011.
Keuschnig, M., Hartmeyer, I., Höfer-Öllinger, G., Schober, A.,
Krautblatter, M., and Schrott, L.: Permafrost-Related Mass Movements:
Implications from a Rock Slide at the Kitzsteinhorn, Austria, in
Engineering Geology for Society and Territory, edited by: Lollino, G.,
Manconi, A., Clague, J. Shan, W., and Chiarle, M., Springer International
Publishing, Basel, Switzerland, 1, 255–259, 2015.
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, 2016.
Klemeš, V.: Probability of extreme hydrometeorological events - a
different approach, in Extreme Hydrological Events: Precipitation, Floods
and Droughts, edited by: Kundzewicz, Z. W., Rosbjerg D., Simonovic, S. P.,
and Takeuchi, K., IAHS Publication No. 213, Wallingfird, UK, 167–176, 1993.
Korup, O.: Large landslides and their effect on sediment flux in South
Westland, New Zealand, Earth Surf. Proc. Land., 30, 305–323, 2005.
Krautblatter, M. and Moser, M.: A nonlinear model coupling rockfall and
rainfall intensity based on a four year measurement in a high Alpine rock
wall (Reintal, German Alps), Nat. Hazards Earth Syst. Sci., 9, 1425–1432, https://doi.org/10.5194/nhess-9-1425-2009, 2009.
Krautblatter, M., Moser, M., Schrott, L., Wolf, J., and Morche, D.:
Significance of rockfall magnitude and carbonate dissolution for rock slope
erosion and geomorphic work on Alpine limestone cliffs (Reintal, German
Alps), Geomorphology, 167–168, 21–34, 2012.
Krautblatter, M. and Moore, J. R.: Rock slope instability and erosion:
toward improved process understanding, Earth Surf. Proc. Land., 39,
1273–1278, 2014.
Lague, D., Brodu, N., and Leroux, J.: Accurate 3D comparison of complex
topography with terrestrial laser scanner: Application to the Rangitikei
canyon (N-Z), ISPRS J. Photogramm., 82, 10–26, 2013.
Larsen, E. and Mangerud, J.: Erosion Rate of a Younger Dryas Cirque Glacier
at Kråkenes, Western Norway, Ann. Glaciol., 2, 153–158, 1981.
Lato, M. J., Diederichs, M. S., Hutchinson, D. J., and Harrap, R.:
Evaluating roadside rockmasses for rockfall hazards using LiDAR data:
optimizing data collection and processing protocols, Nat. Hazards, 60,
831–864, 2011.
Lewis, W. V.: Glacial Movement by Rotational Slipping, Geogr. Ann. A., 31,
146–158, 1949.
Lim, M., Petley, D. N., Rosser, N. J., Allison, R. J., Long, A. J., and
Pybus, D.: Combined Digital Photogrammetry and Time-of-Flight Laser Scanning
for Monitoring Cliff Evolution, Photogramm. Rec., 20, 109–129, 2005.
Lim, M., Rosser, N. J., Allison, R. J., and Petley, D. N.: Erosional
processes in the hard rock coastal cliffs at Staithes, North Yorkshire,
Geomorphology, 114, 12–21, 2010.
Malamud, B. D., Turcotte, D. L., Guzzetti, F., and Reichenbach, P.:
Landslide inventories and their statistical properties, Earth Surf. Proc. Land., 29, 687–711, 2004.
Martonne, E.: Sur la formation des cirques, Ann. Geogr., 10, 10–16, 1901.
McColl, S. T.: Paraglacial rock-slope stability, Geomorphology, 153–154,
1–16, 2012.
Mindrescu, M., and Evans, I. S.: Cirque form and development in Romania:
allometry and the buzz-saw hypothesis, Geomorphology, 208, 117–136, 2014.
Moore, J. R., Sanders, J. W., Dietrich, W. E., and Glaser, S. D.: Influence
of rock mass strength on the erosion rate of alpine cliffs, Earth Surf. Proc. Land., 34, 1339–1352, 2009.
Nguyen, H. T., Fernandez-Steeger, T. M., Wiatr, T., Rodrigues, D., and Azzam, R.: Use of terrestrial laser scanning for engineering geological applications on volcanic rock slopes – an example from Madeira island (Portugal), Nat. Hazards Earth Syst. Sci., 11, 807–817, https://doi.org/10.5194/nhess-11-807-2011, 2011.
Noetzli, J., Hoelzle, M., and Haeberli, W.: Mountain permafrost and recent
Alpine rock-fall events: a GIS-based approach to determine critical factors,
in Proceedings of the 8th International Conference on Permafrost, Zurich,
Switzerland, 21–25 July, 2, 827–832, 2003.
O'Farrell, C.R., Heimsath, A.M., Lawson, D.E., Jorgensen, L.M., Evenson,
E.B., Larson, G., Denner, J.: Quantifying periglacial erosion: insights on a
glacial sediment budget, Matanuska Glacier, Alaska, Earth Surf. Proc.
Land., 34, 2008–2022, 2009.
Oppikofer, T., Jaboyedoff, M., and Keusen, H.-R.: Collapse at the eastern
Eiger flank in the Swiss Alps, Nat. Geosci., 1, 531–535, 2008.
Oppikofer, T., Jaboyedoff, M., Blikra, L., Derron, M.-H., and Metzger, R.: Characterization and monitoring of the Åknes rockslide using terrestrial laser scanning, Nat. Hazards Earth Syst. Sci., 9, 1003–1019, https://doi.org/10.5194/nhess-9-1003-2009, 2009.
Paine, A. D. M.: 'Ergodic' reasoning in geomorphology: time for a review of
the term?, Prog. Phys. Geog., 9, 1–15, 1985.
Plaesken, R., Keuschnig, M., and Krautblatter M.: Systematic derivation of
anchoring forces in permafrost-affected bedrock, EGU General Assembly,
Vienna, Austria, 23–28 April 2017, 2017.
Purdie, H.: Glacier Retreat and Tourism: Insights from New Zealand, Mt. Res.
Dev., 33, 463–472, 2013.
Purdie, H., Gomez, C., and Espiner, S.: Glacier recession and the changing
rockfall hazard: Implications for glacier tourism, New Zeal. Geogr., 71,
189–202, 2015.
Rabatel, A., Deline, P., Jaillet, S., and Ravanel, L.: Rock falls in
high-alpine rock walls quantified by terrestrial lidar measurements: A case
study in the Mont Blanc area, Geophys. Res. Lett., 35, 2008.
Rapp, A.: Recent Development of Mountain Slopes in Kärkevagge and
Surroundings, Northern Scandinavia, Geogr. Ann. A., 42, 65–200, 1960.
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.
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,
2010.
Ravanel, L., Deline, P., Lambiel, C., and Vincent, C.: Instability of a high
alpine rock ridge: the lower arête des cosmiques, mont blanc massif,
France, Geogr. Ann. A., 95, 51–66, 2013.
Richter, E.: Geomorphologische Untersuchungen in den Hochalpen, Petermann
Geogr. Mitt., 29, 1–103, 1900.
Romana, M.: New adjustment ratings for application of Bieniawski
classification to slopes, Proceedings of the International Symposium on the
Role of Rock Mechanics in Excavations for Mining and Civil Works,
International Society of Rock Mechanics, Zacatecas, 49–53, 1985.
Rosser, N. J., Petley, D. N., Lim, M., Dunning, S. A., and Allison, R. J.:
Terrestrial laser scanning for monitoring the process of hard rock coastal
cliff erosion, Q. J. Eng. Geol. Hydroge., 38, 363–375, 2005.
Rosser, N. J., Lim, M., Petley, D. N., Dunning, S. A., and Allison, R. J.:
Patterns of precursory rockfall prior to slope failure, J. Geophys. Res.-Earth, 112, 2007.
Sadler, P. M.: Sediment Accumulation Rates and the Completeness of
Stratigraphic Sections, J. Geol., 89, 569–584, 1981.
Sanders, J. W., Cuffey, K. M., Moore, J. R., MacGregor, K. R., and
Kavanaugh, J. L.: Periglacial weathering and headwall erosion in cirque
glacier bergschrunds, Geology, 40, 779–782, 2012.
Sanders, J. W., Cuffey, K. M., MacGregor, K. R., and Collins, B. D.: The
sediment budget of an alpine cirque, Geol. Soc. Am. Bull., 125, 229–248,
2013.
Sass, O.: Spatial patterns of rockfall intensity in the northern Alps, Z.
Geomorphol., 138, 51-65, 2005.
Sass, O. and Oberlechner, M.: Is climate change causing increased rockfall frequency in Austria?, Nat. Hazards Earth Syst. Sci., 12, 3209–3216, https://doi.org/10.5194/nhess-12-3209-2012, 2012.
Scherler, D.: Climatic limits to headwall retreat in the Khumbu Himalaya, eastern Nepal, Geology, 42, 1019–1022, 2014.
Scherler, D., Bookhagen, B., and Strecker, M. R.: Hillslope-glacier
coupling: The interplay of topography and glacial dynamics in High Asia, J.
Geophys. Res.-Earth, 116, 2011.
Schlögel, R., Torgoev, I., De Marneffe, C., and Havenith, H.-B.:
Evidence of a changing size-frequency distribution of landslides in the
Kyrgyz Tien Shan, Central Asia, Earth Surf. Proc. Land., 36, 1658–1669,
2011.
Schober, A., Bannwart, C., and Keuschnig, M.: Rockfall modelling in high
alpine terrain – validation and limitations/Steinschlagsimulation in
hochalpinem Raum – Validierung und Limitationen, Geomechanics and
Tunnelling, 5, 368–378, 2012.
Schrott, L.: Some geomorphological-hydrological characteristics of rock
glaciers in the Andes, San Juan, Argentina, Z.
Geomorphol., 104, 161–173, 1996.
Sellmeier, B.: Quantitative Parameterization and 3D-run-out Modelling of
Rockfalls at Steep Limestone Cliffs in the Bavarian Alps, Springer
International Publishing, Switzerland, 2015.
Stark, C. P. and Hovius, N.: The characterization of landslide size
distributions, Geophys. Res. Lett., 28, 1091–1094, 2001.
Stock, G. M., Bawden, G. W., Green, J. K., Hanson, E., Downing, G., Collins,
B. D., Bond, S., and Leslar, M.: High-resolution three-dimensional imaging
and analysis of rock falls in Yosemite Valley, California, Geosphere, 7,
573–581, 2011.
Strøm, K. M.: Geomorphology of the Rondane area, Norsk. Geol. Tidsskr., 25, 360–378, 1945.
Strunden, J., Ehlers, T. A., Brehm, D., and Nettesheim, M.: Spatial and
temporal variations in rockfall determined from TLS measurements in a
deglaciated valley, Switzerland, J. Geophys. Res.-Earth, 120, 1251–1273,
2015.
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, 2014.
Terweh, S.: Geomorphologische Kartierung am Kitzsteinhorn (Hohe Tauern,
Österreich) – Eine raum-zeitliche Analyse geomorphologischer Prozesse
im Gletscherumfeld des Schmiedingerkees, Bachelor Thesis, University of
Bonn, Germany, 67 pp., 2012.
van Veen, M., Hutchinson, D. J., Kromer, R., Lato, M., and Edwards, T.:
Effects of sampling interval on the frequency - magnitude relationship of
rockfalls detected from terrestrial laser scanning using semi-automated
methods, Landslides, 14, 1579–1592, 2017.
Waldrop, H. A.: Arapaho Glacier: a sixty-year record, University of Colorado
Studies, Series in Geology 3, 37 pp., 1964.
Whalley, W. B.: The mechanics of high-magnitude low-frequency rock failure, Reading Geographical Papers, 27, 48 pp., 1974.
Whalley, W. B.: Rockfalls, in: Slope Instability, edited by: Brundsden, D. and Prior, D. B., Wiley, Chichester, 217–256, 1984.
Williams, J. G., Rosser, N. J., Hardy, R. J., Brain, M. J., and Afana, A. A.: Optimising 4-D surface change detection: an approach for capturing rockfall magnitude–frequency, Earth Surf. Dynam., 6, 101–119, https://doi.org/10.5194/esurf-6-101-2018, 2018.
Short summary
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.
Rockfall size and frequency in two deglaciating cirques in the Central Alps, Austria, is...
