Articles | Volume 11, issue 4
https://doi.org/10.5194/esurf-11-663-2023
© Author(s) 2023. 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-11-663-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
21 Jul 2023
Research article |
| 21 Jul 2023
| 21 Jul 2023
Modeling the spatially distributed nature of subglacial sediment transport and erosion
Institut des dynamiques de la surface terrestre (IDYST), Université de Lausanne, Bâtiment Géopolis, 1015 Lausanne, Switzerland
Leif Anderson
Institut des dynamiques de la surface terrestre (IDYST), Université de Lausanne, Bâtiment Géopolis, 1015 Lausanne, Switzerland
Department of Geology and Geophysics, University of Utah, Frederick Albert Sutton Building, 115 S 1460 E, Salt Lake City, UT 84112-0102, USA
Frédéric Herman
Institut des dynamiques de la surface terrestre (IDYST), Université de Lausanne, Bâtiment Géopolis, 1015 Lausanne, Switzerland
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Understanding how glaciers generate and transport sediment to the ocean is important for understanding ocean ecosystems and for developing knowledge of past cryosphere from marine sediments. This manuscript presents a new way to simulate sediment transport in rivers below ice sheets and glaciers and quantify volumes and characteristics of sediment that can be used to reveal the hidden record of the subglacial environment for both past and present glacial conditions.
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Understanding sliding at the bed of glaciers is essential to understand the future of sea-level rise and glacier-related hazards. Yet there is currently no universal law to describe this mechanism. We propose a universal glacier sliding law and a method to qualitatively constrain it. We use satellite remote sensing to create velocity maps over 6 years at Shisper Glacier, Pakistan, including its recent surge, and show that the observations corroborate the generalized theory.
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Ancient Alpine glaciers have carved a fascinating landscape of piedmont lakes, glacial valleys, and mountain cirques. Using a previous supercomputer simulation of glacier flow, we show that glacier erosion has constantly evolved and moved to different parts of the Alps. Interestingly, larger glaciers do not always cause more rapid erosion. Instead, glacier erosion is modelled to slow down during glacier advance and peak during phases of retreat, such as the one the Earth is currently undergoing.
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We performed high-resolution debris-thickness mapping using land surface temperature (LST) measured from an unpiloted aerial vehicle (UAV) at various times of the day. LSTs from UAVs require calibration that varies in time. We test two approaches to quantify supraglacial debris cover, and we find that the non-linearity of the relationship between LST and debris thickness increases with LST. Choosing the best model to predict debris thickness depends on the time of the day and the terrain aspect.
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Earth Surf. Dynam., 10, 909–928, https://doi.org/10.5194/esurf-10-909-2022, https://doi.org/10.5194/esurf-10-909-2022, 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 non-glacial erosion rates are higher than previously thought, but glacial erosion remains the most influential on landscape evolution.
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The Cryosphere, 16, 3123–3148, https://doi.org/10.5194/tc-16-3123-2022, https://doi.org/10.5194/tc-16-3123-2022, 2022
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Earth Surf. Dynam., 9, 1153–1221, https://doi.org/10.5194/esurf-9-1153-2021, https://doi.org/10.5194/esurf-9-1153-2021, 2021
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The cooling climate of the last few million years leading into the ice ages has been linked to increasing erosion rates by glaciers. One of the ways to measure this is through mineral cooling ages. In this paper, we investigate potential bias in these data and the methods used to analyse them. We find that the data are not themselves biased but that appropriate methods must be used. Past studies have used appropriate methods and are sound in methodology.
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The Cryosphere Discuss., https://doi.org/10.5194/tc-2019-178, https://doi.org/10.5194/tc-2019-178, 2019
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Thick rock cover (or debris) disturbs the melt of many Alaskan glaciers. Yet the effect of debris on glacier thinning in Alaska has been overlooked. In three companion papers we assess the role of debris and ice flow on the thinning of Kennicott Glacier. In Part C we describe feedbacks contributing to rapid thinning under thick debris. Changes in debris thickness downglacier on Kennicott Glacier are manifested in the pattern of glacier thinning, ice dynamics, melt, and glacier surface features.
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The Cryosphere Discuss., https://doi.org/10.5194/tc-2019-174, https://doi.org/10.5194/tc-2019-174, 2019
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Earth Surf. Dynam., 7, 633–662, https://doi.org/10.5194/esurf-7-633-2019, https://doi.org/10.5194/esurf-7-633-2019, 2019
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Joaquín M. C. Belart, Etienne Berthier, Eyjólfur Magnússon, Leif S. Anderson, Finnur Pálsson, Thorsteinn Thorsteinsson, Ian M. Howat, Guðfinna Aðalgeirsdóttir, Tómas Jóhannesson, and Alexander H. Jarosch
The Cryosphere, 11, 1501–1517, https://doi.org/10.5194/tc-11-1501-2017, https://doi.org/10.5194/tc-11-1501-2017, 2017
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Sub-meter satellite stereo images (Pléiades and WorldView2) are used to accurately measure snow accumulation and winter mass balance of Drangajökull ice cap. This is done by creating and comparing accurate digital elevation models. A glacier-wide geodetic mass balance of 3.33 ± 0.23 m w.e. is derived between October 2014 and May 2015. This method could be easily transposable to remote glaciated areas where seasonal mass balance measurements (especially winter accumulation) are lacking.
Leif S. Anderson and Robert S. Anderson
The Cryosphere, 10, 1105–1124, https://doi.org/10.5194/tc-10-1105-2016, https://doi.org/10.5194/tc-10-1105-2016, 2016
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Mountains erode and shed rocks down slope. When these rocks (debris) fall on glacier ice they can suppress ice melt. By protecting glaciers from melt, debris can make glaciers extend to lower elevations. Using mathematical models of glaciers and debris deposition, we find that debris can more than double the length of glaciers. The amount of debris deposited on the glacier, which scales with mountain height and steepness, is the most important control on debris-covered glacier length and volume.
M. Fox, F. Herman, S. D. Willett, and D. A. May
Earth Surf. Dynam., 2, 47–65, https://doi.org/10.5194/esurf-2-47-2014, https://doi.org/10.5194/esurf-2-47-2014, 2014
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Jacob Hardt, Tim P. Dooley, and Michael R. Hudec
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Prakash Pokhrel, Mikael Attal, Hugh D. Sinclair, Simon M. Mudd, and Mark Naylor
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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.
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
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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
Alley, R. B., Cuffey, K. M., Evenson, E. B., Strasser, J. C., Lawson, D. E.,
and Larson, G. J.: How glaciers entrain and transport basal sediment:
physical constraints, Quaternary Sci. Rev., 16, 1017–1038,
https://doi.org/10.1016/S0277-3791(97)00034-6, 1997. a, b, c
Alley, R. B., Lawson, D. E., Larson, G. J., Evenson, E. B., and Baker, G. S.:
Stabilizing feedbacks in glacier-bed erosion, Nature, 424, 758–760,
https://doi.org/10.1038/nature01839, 2003. a, b
Andersen, J. L., Egholm, D. L., Knudsen, M. F., Jansen, J. D., and Nielsen,
S. B.: The periglacial engine of mountain erosion – Part 1: Rates of frost cracking and frost creep, Earth Surf. Dynam., 3, 447–462,
https://doi.org/10.5194/esurf-3-447-2015, 2015. a
Bacchi, V., Recking, A., Eckert, N., Frey, P., Piton, G., and Naaim, M.: The
effects of kinetic sorting on sediment mobility on steep slopes, Earth Surf. Proc. Land., 39, 1075–1086, https://doi.org/10.1002/esp.3564, 2014. a
Beaud, F., Flowers, G., and Venditti, J. G.: Modeling sediment transport in
ice-walled subglacial channels and its implications for esker formation and
pro-glacial sediment yields, J. Geophys. Res.-Earth, 123, 1–56, https://doi.org/10.1029/2018JF004779, 2018a. a, b
Beaud, F., Venditti, J., Flowers, G., and Koppes, M.: Excavation of subglacial bedrock channels by seasonal meltwater flow, Earth Surf. Proc. Land., 43, 1960–1972, https://doi.org/10.1002/esp.4367, 2018b. a
Bhatia, M. P., Kujawinski, E. B., Das, S. B., Breier, C. F., Henderson, P. B., and Charette, M. A.: Greenland meltwater as a significant and potentially bioavailable source of iron to the ocean, Nat. Geosci., 6, 274–278, 2013. a
Bovy, B., Braun, J., and Demoulin, A.: A new numerical framework for simulating the control of weather and climate on the evolution of soil-mantled hillslopes, Geomorphology, 263, 99–112, https://doi.org/10.1016/j.geomorph.2016.03.016, 2016. a
Brinkerhoff, D., Truffer, M., and Aschwanden, A.: Sediment transport drives
tidewater glacier periodicity, Nature Commun., 8, 90,
https://doi.org/10.1038/s41467-017-00095-5, 2017. a, b, c, d
Brinkerhoff, D. J., Meyer, C. R., Bueler, E., Truffer, M., and Bartholomaus,
T. C.: Inversion of a glacier hydrology model, Ann. Glaciol., 57, 84–95, 2016. a
Chen, Y., Liu, X., Gulley, J. D., and Mankoff, K. D.: Subglacial Conduit
Roughness: Insights From Computational Fluid Dynamics Models,
Geophys. Res. Lett., 45, 11206–11218, https://doi.org/10.1029/2018GL079590, 2018. a
Church, M. and Ryder, J. M.: Paraglacial sedimentation: a consideration of
fluvial processes conditioned by glaciation, Geol. Soc. Am. Bull., 83, 3059–3072, 1972. a
Cook, S., Swift, D., Kirkbride, M., Knight, P., and Waller, R.: The empirical
basis for modelling glacial erosion rates, Nat. Commun., 11, 1–7,
https://doi.org/10.1038/s41467-020-14583-8, 2020. a
Covington, M. D., Gulley, J. D., Trunz, C., Mejia, J., and Gadd, W.: Moulin
Volumes Regulate Subglacial Water Pressure on the Greenland Ice Sheet, Geophys. Res. Lett., 47, e2020GL088901, https://doi.org/10.1029/2020GL088901, 2020. a
Creyts, T. T., Clarke, G. K. C., and Church, M.: Evolution of subglacial
overdeepenings in response to sediment redistribution and glaciohydraulic
supercooling, J. Geophys. Res.-Earth, 118, 423–446, 2013. a
Cuffey, K. M. and Paterson, W. S. B.: The Physics of Glaciers, in: 4th Edn.,
Butterworth-Heinemann, Burlington, MA, USA, ISBN 9780123694614, ISBN 0123694612, 2010. a
Damsgaard, A., Goren, L., and Suckale, J.: Water pressure fluctuations control variability in sediment flux and slip dynamics beneath glaciers and ice streams, Commun. Earth Environ., 1, 1–8, https://doi.org/10.1038/s43247-020-00074-7, 2020. a
Delaney, I. and Adhikari, S.: Increased subglacial sediment discharge during
century scale glacier retreat: consideration of ice dynamics, glacial erosion
and fluvial sediment transport, Geophys. Res. Lett., 47, e2019GL085672, https://doi.org/10.1029/2019GL085672, 2020. a, b, c
Delaney, I. and Anderson, L. S.: Debris Cover Limits Subglacial Erosion and
Promotes Till Accumulation, Geophys. Res. Lett., 49, e2022GL099049, https://doi.org/10.1029/2022GL099049, 2022. a
Delaney, I., Bauder, A., Werder, M. A., and Farinotti, D.: Regional and annual variability in subglacial sediment transport by water for two glaciers in the Swiss Alps, Front. Earth Sci., 6, 175, https://doi.org/10.3389/feart.2018.00175, 2018b. a, b, c, d
Delaney, I., Anderson, L., and Herman, F.: Code and video outputs for “Modeling the spatially distributed nature of subglacial sediment transport and erosion”, Zendo [code and video supplement], https://doi.org/10.5281/zenodo.7975219, 2023. a, b
Egholm, D., Nielsen, S., Pedersen, V., and Lesemann, J.-E.: Glacial effects
limiting mountain height, Nature, 460, 884–887, https://doi.org/10.1038/nature08263,
2009. a
Egholm, D. L., Pedersen, V. K., Knudsen, M. F., and Larsen, N. K.: Coupling the flow of ice, water, and sediment in a glacial landscape evolution model,
Geomorphology, 141, 47–66, 2012. a
Exner, F. M.: Über die Wechselwirkung zwischen Wasser und Geschiebe
in flüssen, Abhandlungen der Akadamie der Wissenschaften, Wien, 134, 165–204, 1920a. a
Exner, F. M.: Zur Physik der Dünen, Abhandlungen der Akadamie der
Wissenschaften, Wien, 129, 929–952, 1920b. a
Felix, D., Albayrak, I., Abgottspon, A., and Boes, R. M.: Suspended sediment
measurements and calculation of the particle load at HPP Fieschertal, IOP
Conf. Ser.: Earth Environ. Sci., 49, 122007, https://doi.org/10.1088/1755-1315/49/12/122007, 2016. a
Fischer, U. H., Braun, A., Bauder, A., and Flowers, G. E.: Changes in geometry and subglacial drainage derived from digital elevation models:
Unteraargletscher, Switzerland, 1927–97, Ann. Glaciol., 40, 20–24, https://doi.org/10.3189/172756405781813528, 2005. a
Gimbert, F., Tsai, V. C., Amundson, J. M., Bartholomaus, T. C., and Walter,
J. I.: Subseasonal changes observed in subglacial channel pressure, size, and
sediment transport, Geophys. Res. Lett., 43, 3786–3794, 2016. a
Hairer, E., Nørsett, S. P., and Wanner, G.: Solving ordinary differential
equations I: nonstiff problems, vol. 1, Springer Science & Business,
https://doi.org/10.1007/978-3-540-78862-1, 1992. a
Hallet, B., Hunter, L., and Bogen, J.: Rates of erosion and sediment evacuation by glaciers: A review of field data and their implications, Global Planet. Change, 12, 213–235, https://doi.org/10.1016/0921-8181(95)00021-6, 1996. a, b
Harbor, J., Hallet, B., and Raymond, C.: A numerical model of landform
development by glacial erosion, Nature, 333, 347–349, 1988. a
Hawkings, J., Wadham, J., Tranter, M., Raiswell, R., Benning, L., Statham, P., Tedstone, A., Nienow, P., Lee, K., and Telling, J.: Ice sheets as a
significant source of highly reactive nanoparticulate iron to the oceans,
Nat. Commun., 5, 1–8, https://doi.org/10.1038/ncomms4929, 2014. a
Herman, F., Beaud, F., Champagnac, J., Lemieux, J. M., and Sternai, P.: Glacial hydrology and erosion patterns: a mechanism for carving glacial valleys, Earth Planet. Sc. Lett., 310, 498–508, https://doi.org/10.1016/j.epsl.2011.08.022, 2011. a, b
Herman, F., Beyssac, O., Brughelli, M., Lane, S. N., Leprince, S., Adatte, T., Lin, J. Y. Y., Avouac, J. P., and Cox, S. C.: Erosion by an alpine glacier, Science, 350, 193–195, https://doi.org/10.1126/science.aab2386, 2015. a, b, c, d
Herman, F., Braun, J., Deal, E., and Prasicek, G.: The Response Time of Glacial Erosion, J. Geophys. Res.-Earth, 123, 801–817,
https://doi.org/10.1002/2017JF004586, 2018. a, b
Herman, F., De Doncker, F., Delaney, I., Prasicek, G., and Koppes, M.: The
impact of glaciers on mountain erosion, Nat. Rev. Earth Environ., 2, 422–435, https://doi.org/10.1038/s43017-021-00165-9, 2021. a, b
Hewitt, I. and Creyts, T.: A model for the formation of eskers, Geophys. Res. Lett., 46, 6673–6680, https://doi.org/10.1029/2019GL082304, 2019. a, b
Hooke, R. L., Laumann, T., and Kohler, J.: Subglacial Water Pressures and the
Shape of Subglacial Conduits, J. Glaciol., 36, 67–71,
https://doi.org/10.3189/S0022143000005566, 1990. a
Iverson, N. R.: Laboratory simulations of glacial abrasion: comparison with
theory, J. Glaciol., 36, 304–314, https://doi.org/10.3189/002214390793701264, 1990. a
Iverson, N. R.: A theory of glacial quarrying for landscape evolution models,
Geology, 40, 679–682, https://doi.org/10.1130/G33079.1, 2012. a
Kasmalkar, I., Mantelli, E., and Suckale, J.: Spatial heterogeneity in
subglacial drainage driven by till erosion, P. Roy. Soc. A, 475, 20190259,
https://doi.org/10.1098/rspa.2019.0259, 2019. a
Koppes, M., Hallet, B., Rignot, E., Mouginot, J., Wellner, J. S., and Boldt,
K.: Observed latitudinal variations in erosion as a function of glacier
dynamics, Nature, 526, 100–103, 2015. a
Lane, S. N., Bakker, M., Gabbud, C., Micheletti, N., and Saugy, J.: Sediment
export, transient landscape response and catchment-scale connectivity
following rapid climate warming and alpine glacier recession, Geomorphology,
277, 210–227, https://doi.org/10.1016/j.geomorph.2016.02.015, 2017. a, b
Li, D., Lu, X., Overeem, I., Walling, D. E., Syvitski, J., Kettner, A. J.,
Bookhagen, B., Zhou, Y., and Zhang, T.: Exceptional increases in fluvial
sediment fluxes in a warmer and wetter High Mountain Asia, Science, 374,
599–603, https://doi.org/10.1126/science.abi9649, 2021. a, b
Li, D., Lu, X., Walling, D., Zhang, T., Steiner, J., Wasson, R., Harrison, S., Nepal, S., Nie, Y., Immerzeel, W., et al.: High Mountain Asia hydropower systems threatened by climate-driven landscape instability, Nat.
Geosci., 15, 520–530, 2022. a
Mao, L., Dell'Agnese, A., Huincache, C., Penna, D., Engel, M., Niedrist, G.,
and Comiti, F.: Bedload hysteresis in a glacier-fed mountain river, Earth
Surf. Proc. Land., 39, 964–976, https://doi.org/10.1002/esp.3563, 2014. a
Meyer-Peter, E. and Müller, R.: Formulas for bedload transport, in:
Hydraulic Engineering Reports, International Association for
Hydro-Environment Engineering and Research, https://repository.tudelft.nl/islandora/object/uuid:4fda9b61-be28-4703-ab06-43cdc2a21bd7
(last access: 12 July 2023), 1948. a, b
Milner, A. M., Khamis, K., Battin, T. J., Brittain, J. E., Barrand, N. E., Füreder, L., Cauvy-Fraunié, S., Gíslason, G. M., Jacobsen, D., Hannah, D. M., Hodson, A. J., Hood, E., Lencioni, V., ólafsson, J. S., Robinson, C. T., Tranter, M., and Brown, L. E.: Glacier shrinkage driving global changes in downstream systems, P. Natl. Acad. Sci. USA, 114, 9770–9778, 2017. a, b
Nanni, U., Gimbert, F., Vincent, C., Gräff, D., Walter, F., Piard, L., and Moreau, L.: Quantification of seasonal and diurnal dynamics of subglacial
channels using seismic observations on an Alpine glacier, The Cryosphere, 14, 1475–1496, https://doi.org/10.5194/tc-14-1475-2020, 2020. a
Paola, C. and Voller, V. R.: A generalized Exner equation for sediment mass
balance, J. Geophys. Res.-Earth, 110, F04014, https://doi.org/10.1029/2004JF000274,2005. a, b
Perolo, P., Bakker, M., Gabbud, C., Moradi, G., Rennie, C., and Lane, S. N.:
Subglacial sediment production and snout marginal ice uplift during the late
ablation season of a temperate valley glacier, Earth Surf. Proc. Land., 0, 1–68, https://doi.org/10.1002/esp.4562, 2018. a, b, c
Pohle, A., Werder, M. A., Gräff, D., and Farinotti, D.: Characterising
englacial R-channels using artificial moulins, J. Glaciol., 68, 1–12, https://doi.org/10.1017/jog.2022.4, 2022. a, b
Prasicek, G., Herman, F., Robl, J., and Braun, J.: Glacial Steady State
Topography Controlled by the Coupled Influence of Tectonics and Climate, J. Geophys. Res.-Earth, 123, 1344–1362, https://doi.org/10.1029/2017JF004559, 2018. a
Prasicek, G., Hergarten, S., Deal, E., Herman, F., and Robl, J.: A glacial
buzzsaw effect generated by efficient erosion of temperate glaciers in a
steady state model, Earth Planet. Sc. Lett., 543, 116350,
https://doi.org/10.1016/j.epsl.2020.116350, 2020. a
Quinn, P., Beven, K., Chevallier, P., and Planchon, O.: The prediction of
hillslope flow paths for distributed hydrological modelling using digital
terrain models, Hydrol. Process., 5, 59–79, 1991. a
Rackauckas, C. and Nie, Q.: DifferentialEquations.jl – A Performant and Feature-Rich Ecosystem for Solving Differential Equations in
Julia, J. Open Res. Softw., 5, 15, https://doi.org/10.5334/jors.151, 2017. a
Radhakrishnan, K. and Hindmarsh, A. C.: Description and use of LSODE, the
Livermore solver for ordinary differential equations, Reference Publication 1327, NASA, https://ntrs.nasa.gov/citations/19940030753
(last acces: 12 July 2023), 1993. a
Riihimaki, C. A., MacGregor, K. R., Anderson, R. ., Anderson, S. P., and Loso, M. G.: Sediment evacuation and glacial erosion rates at a small alpine
glacier, J. Geophys. Res.-Earth, 110, F03003, https://doi.org/10.1029/2004JF000189, 2005. a
Seguinot, J. and Delaney, I.: Last-glacial-cycle glacier erosion potential in the Alps, Earth Surf. Dynam., 9, 923–935, https://doi.org/10.5194/esurf-9-923-2021, 2021. a
Swift, D. A., Nienow, P. W., and Hoey, T. B.: Basal sediment evacuation by
subglacial meltwater: suspended sediment transport from Haut Glacier
d'Arolla, Switzerland, Earth Surf. Proc. Land., 30, 867–883, https://doi.org/10.1002/esp.1197, 2005. a, b
Thapa, B., Shrestha, R., Dhakal, P., and Thapa, B. S.: Problems of Nepalese
hydropower projects due to suspended sediments, Aquat. Ecosyst. Health Manage., 8, 251–257, https://doi.org/10.1080/14634980500218241, 2005. a
Truffer, M., Harrison, W. D., and Echelmeyer, K. A.: Glacier motion dominated
by processes deep in underlying till, J. Glaciol., 46, 213–221, 2000. a
Wadham, J., Hawkings, J., Tarasov, L., Gregoire, L., Spencer, R., Gutjahr, M., Ridgwell, A., and Kohfeld, K.: Ice sheets matter for the global carbon cycle, Nat. Commun., 10, 1–17, https://doi.org/10.1038/s41467-019-11394-4, 2019. a
Walder, J. S. and Fowler, A.: Channelized subglacial drainage over a deformable bed, J. Glaciol., 40, 3–15, https://doi.org/10.3189/S0022143000003750, 1994. a, b, c, d
Weertman, J.: On the sliding of glaciers, J. Glaciol., 3, 33–38, 1957. a
Werder, M. A., Hewitt, I. J., Schoof, C. G., and Flowers, G. E.: Modeling
channelized and distributed subglacial drainage in two dimensions, J. Geophys. Res.-Earth, 118, 2140–2158, https://doi.org/10.1002/jgrf.20146, 2013. a, b
Zechmann, J., Truffer, M., Motyka, R., Amundson, J., and Larsen, C.: Sediment
redistribution beneath the terminus of an advancing glacier, Taku Glacier
(T'aakú Kwáan Sít'i), Alaska, J. Glaciol., 67, 204–218, https://doi.org/10.1017/jog.2020.101, 2021. a, b
Short summary
This paper presents a two-dimensional subglacial sediment transport model that evolves a sediment layer in response to subglacial sediment transport conditions. The model captures sediment transport in supply- and transport-limited regimes across a glacier's bed and considers both the creation and transport of sediment. Model outputs show how the spatial distribution of sediment and water below a glacier can impact the glacier's discharge of sediment and erosion of bedrock.
This paper presents a two-dimensional subglacial sediment transport model that evolves a...
