Articles | Volume 6, issue 2
https://doi.org/10.5194/esurf-6-487-2018
© Author(s) 2018. 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-6-487-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
The influence of a vegetated bar on channel-bend flow dynamics
Sharon Bywater-Reyes
CORRESPONDING AUTHOR
Department of Geosciences, University of Montana, 32 Campus Drive
no. 1296, Missoula, MT 59812, USA
Department of Earth and Atmospheric Sciences, University of Northern
Colorado, 501 20th St., Greeley, CO 80639, USA
Rebecca M. Diehl
Department of Geosciences, University of Montana, 32 Campus Drive
no. 1296, Missoula, MT 59812, USA
Andrew C. Wilcox
Department of Geosciences, University of Montana, 32 Campus Drive
no. 1296, Missoula, MT 59812, USA
Related authors
Sharon Bywater-Reyes and Beth Pratt-Sitaula
Geosci. Commun., 5, 101–117, https://doi.org/10.5194/gc-5-101-2022, https://doi.org/10.5194/gc-5-101-2022, 2022
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This paper outlines educational materials appropriate to teach upper division or graduate-level geoscience students how to produce and interpret high-resolution topography data. In a remote implementation, students were able to independently generate high-resolution topographic data products that can be used for interpreting hazards such as landsliding and flooding. Students met course learning outcomes while learning marketable skills used within environmental jobs or research settings.
Sharon Bywater-Reyes and Beth Pratt-Sitaula
Geosci. Commun., 5, 101–117, https://doi.org/10.5194/gc-5-101-2022, https://doi.org/10.5194/gc-5-101-2022, 2022
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This paper outlines educational materials appropriate to teach upper division or graduate-level geoscience students how to produce and interpret high-resolution topography data. In a remote implementation, students were able to independently generate high-resolution topographic data products that can be used for interpreting hazards such as landsliding and flooding. Students met course learning outcomes while learning marketable skills used within environmental jobs or research settings.
Kurt S. Imhoff and Andrew C. Wilcox
Earth Surf. Dynam., 4, 591–605, https://doi.org/10.5194/esurf-4-591-2016, https://doi.org/10.5194/esurf-4-591-2016, 2016
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We assess particle transport and storage patterns through channel confluences in mountainous headwater streams. Using passive sediment tracers, we note the location of efficient transport corridors in confluences and compare dispersion against a non-confluence control reach. We suggest that certain confluence types may represent locations of enhanced sediment transport in river networks and encourage further investigation.
Related subject area
Physical: Geomorphology (including all aspects of fluvial, coastal, aeolian, hillslope and glacial geomorphology)
Linear-stability analysis of plane beds under flows with suspended loads
Estimating surface water availability in high mountain rock slopes using a numerical energy balance model
Sediment source and sink identification using Sentinel-2 and a small network of turbidimeters on the Vjosa River
Spatiotemporal bedload transport patterns over two-dimensional bedforms
Ice-buttressing-controlled rock slope failure on a cirque headwall, Lake District, UK
The probabilistic nature of dune collisions in 2D
Shape still matters: rockfall interactions with trees and deadwood in a mountain forest uncover a new facet of rock shape dependency
Earthquake contributions to coastal cliff retreat
Morphologic and morphometric differences between gullies formed in different substrates on Mars: new insights into the gully formation processes
Testing the sensitivity of the CAESAR-Lisflood landscape evolution model to grid cell size
Development of a machine learning model for river bed load
Modeling the spatially distributed nature of subglacial sediment transport and erosion
Confinement width and inflow-to-sediment discharge ratio control the morphology and braiding intensity of submarine channels: insights from physical experiments and reduced-complexity models
The influence of dune lee side shape on time-averaged velocities and turbulence
Synoptic-scale to mesoscale atmospheric circulation connects fluvial and coastal gravel conveyors and directional deposition of coastal landforms in the Dead Sea basin
Initial shape reconstruction of a volcanic island as a tool for quantifying long-term coastal erosion: the case of Corvo Island (Azores)
Geospatial modelling of large-wood supply to rivers: a state-of-the-art model comparison in Swiss mountain river catchments
Mobile evaporite enhances the cycle of physical–chemical erosion in badlands
Revealing the relation between spatial patterns of rainfall return levels and landslide density
Constraints on long-term cliff retreat and intertidal weathering at weak rock coasts using cosmogenic 10Be, nearshore topography and numerical modelling
Impacts of human modifications on material transport in deltas
Evolution of an Alpine proglacial river during 7 decades of deglaciation
Phenomenological model of suspended sediment transport in a small catchment
Alpine hillslope failure in the western US: Insights from the Chaos Canyon landslide, Rocky Mountain National Park USA
Water level fluctuations drive bank instability in a hypertidal estuary
Geotechnical controls on erodibility in fluvial impact erosion
The story of a summit nucleus: hillslope boulders and their effect on erosional patterns and landscape morphology in the Chilean Coastal Cordillera
Pristine levels of suspended sediment in large German river channels during the Anthropocene?
An Arctic delta reduced-complexity model and its reproduction of key geomorphological structures
Marsh induced backwater: the influence of non-fluvial sedimentation on a delta's channel morphology and kinematics
Spatial and temporal variations in rockwall erosion rates around Pigne d’Arolla, Switzerland, derived from cosmogenic 10Be in medial moraines at five adjacent valley glaciers
Development of the morphodynamics on Little Ice Age lateral moraines in 10 glacier forefields of the Eastern Alps since the 1950s
Modeling the inhibition effect of straw checkerboard barriers on wind-blown sand
Exploring the transition between water- and wind-dominated landscapes in Deep Springs, California, as an analog for transitioning landscapes on Mars
Geology and vegetation control landsliding on forest-managed slopes in scarplands
Optimization of passive acoustic bedload monitoring in rivers by signal inversion
On the use of packing models for the prediction of fluvial sediment porosity
Entrainment and deposition of boulders in a gravel bed river
Coupling between downstream variations of channel width and local pool–riffle bed topography
A combined approach of experimental and numerical modeling for 3D hydraulic features of a step-pool unit
Effects of seasonal variations in vegetation and precipitation on catchment erosion rates along a climate and ecological gradient: Insights from numerical modelling
Combining seismic signal dynamic inversion and numerical modeling improves landslide process reconstruction
Building a Bimodal Landscape with Varying Bed Thicknesses in Last Chance Canyon, New Mexico
Response of modern fluvial sediments to regional tectonic activity along the upper Min River, eastern Tibet
Geophysical evidence of massive hyperconcentrated push waves with embedded toma hills caused by the Flims rockslide, Switzerland
Comparison of calibration characteristics of different acoustic impact systems for measuring bedload transport in mountain streams
Automated riverbed material analysis using Deep Learning on underwater images
Episodic sediment supply to alluvial fans: implications for fan incision and morphometry
Failure mode of rainfall-induced landslide of granite residual soil, southeastern Guangxi Province, China
Exploring exogenous controls on short- versus long-term erosion rates globally
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.
Hossein Hosseiny, Claire C. Masteller, Jedidiah E. Dale, and Colin B. Phillips
Earth Surf. Dynam., 11, 681–693, https://doi.org/10.5194/esurf-11-681-2023, https://doi.org/10.5194/esurf-11-681-2023, 2023
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It is of great importance to engineers and geomorphologists to predict the rate of bed load in rivers. In this contribution, we used a large dataset of measured data and developed an artificial neural network (ANN), a machine learning algorithm, for bed load prediction. The ANN model predicted the bed load flux close to measured values and better than the ones obtained from four standard bed load models with varying degrees of complexity.
Ian Delaney, Leif Anderson, and Frédéric Herman
Earth Surf. Dynam., 11, 663–680, https://doi.org/10.5194/esurf-11-663-2023, https://doi.org/10.5194/esurf-11-663-2023, 2023
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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.
Sam Y. J. Huang, Steven Y. J. Lai, Ajay B. Limaye, Brady Z. Foreman, and Chris Paola
Earth Surf. Dynam., 11, 615–632, https://doi.org/10.5194/esurf-11-615-2023, https://doi.org/10.5194/esurf-11-615-2023, 2023
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We use experiments and a model to study the effects of confinement width and the inflow-to-sediment discharge ratio on the evolution of submarine braided channels. We find that confinement width controls most of the morphological changes. These trends are consistent for submarine braided channels both with and without confinement width effects and similar to fluvial braided rivers. Furthermore, we built a model that can simulate the flow bifurcation and confluence of submarine braided channels.
Alice Lefebvre and Julia Cisneros
Earth Surf. Dynam., 11, 575–591, https://doi.org/10.5194/esurf-11-575-2023, https://doi.org/10.5194/esurf-11-575-2023, 2023
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Underwater dunes are found in various environments with strong hydrodynamics and sandy sediment. Using a numerical model, we investigated how the dune shape influences flow velocity and turbulence. We propose a classification with three types of dunes, depending on their mean lee side angles (low-angle dunes, intermediate-angle dunes and high-angle dunes). We discuss the implications of this classification on the interaction between dune morphology, flow and sediment transport.
Haggai Eyal, Moshe Armon, Yehouda Enzel, and Nadav G. Lensky
Earth Surf. Dynam., 11, 547–574, https://doi.org/10.5194/esurf-11-547-2023, https://doi.org/10.5194/esurf-11-547-2023, 2023
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Extracting paleoenvironmets from sedimentologic and geomorphic records is a main goal in Earth sciences. We study a chain of processes connecting causative Mediterranean cyclones, coeval floods, storm waves generated by mesoscale funneled wind, and coastal gravel transport. This causes northward dispersion of gravel along the modern Dead Sea coast, which has also persisted since the late Pleistocene, resulting in beach berms and fan deltas always being deposited north of channel mouths.
Rémi Bossis, Vincent Regard, and Sébastien Carretier
Earth Surf. Dynam., 11, 529–545, https://doi.org/10.5194/esurf-11-529-2023, https://doi.org/10.5194/esurf-11-529-2023, 2023
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This study presents a method to calculate the volume of rock eroded by the sea on volcanic islands, by reconstructing their pre-erosion shape and size. The method has been applied on Corvo Island (Azores). We show that before the island was eroded, it was roughly 8 km wide and 1 km high. The island has lost more than 6 km3 of rock and 80 % of its surface. We also show that the erosion of sea cliffs is mainly due to the moderate and most frequent waves.
Nicolas Steeb, Virginia Ruiz-Villanueva, Alexandre Badoux, Christian Rickli, Andrea Mini, Markus Stoffel, and Dieter Rickenmann
Earth Surf. Dynam., 11, 487–509, https://doi.org/10.5194/esurf-11-487-2023, https://doi.org/10.5194/esurf-11-487-2023, 2023
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Various models have been used in science and practice to estimate how much large wood (LW) can be supplied to rivers. This contribution reviews the existing models proposed in the last 35 years and compares two of the most recent spatially explicit models by applying them to 40 catchments in Switzerland. Differences in modelling results are discussed, and results are compared to available observations coming from a unique database.
Ci-Jian Yang, Pei-Hao Chen, Erica D. Erlanger, Jens M. Turowski, Sen Xu, Tse-Yang Teng, Jiun-Chuan Lin, and Jr-Chuang Huang
Earth Surf. Dynam., 11, 475–486, https://doi.org/10.5194/esurf-11-475-2023, https://doi.org/10.5194/esurf-11-475-2023, 2023
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Observations of the interaction between extreme physical erosion and chemical weathering dynamics are limited. We presented major elements of stream water in the badland catchment at 3 h intervals during a 3 d typhoon. The excess sodium in the evaporite deposits causes material dispersion through deflocculation, which enhances the suspended sediment flux. Moreover, we observed a shift from predominantly evaporite weathering at peak precipitation to silicate weathering at peak discharge.
Slim Mtibaa and Haruka Tsunetaka
Earth Surf. Dynam., 11, 461–474, https://doi.org/10.5194/esurf-11-461-2023, https://doi.org/10.5194/esurf-11-461-2023, 2023
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We explore the relation between the spatial patterns of rainfall return levels for various timespans (1–72 h) and landslide density during a rainfall event that triggered widespread landslides. We found that landslide density increases with increased rainfall return levels for the various examined timespans. Accordingly, we conclude that whether rainfall intensities reached exceptional return levels for a wide time range is a key determinant of the spatial distribution of landslides.
Jennifer R. Shadrick, Dylan H. Rood, Martin D. Hurst, Matthew D. Piggott, Klaus M. Wilcken, and Alexander J. Seal
Earth Surf. Dynam., 11, 429–450, https://doi.org/10.5194/esurf-11-429-2023, https://doi.org/10.5194/esurf-11-429-2023, 2023
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This study uses a coastal evolution model to interpret cosmogenic beryllium-10 concentrations and topographic data and, in turn, quantify long-term cliff retreat rates for four chalk sites on the south coast of England. By using a process-based model, clear distinctions between intertidal weathering rates have been recognised between chalk and sandstone rock coast sites, advocating the use of process-based models to interpret the long-term behaviour of rock coasts.
Jayaram Hariharan, Kyle Wright, Andrew Moodie, Nelson Tull, and Paola Passalacqua
Earth Surf. Dynam., 11, 405–427, https://doi.org/10.5194/esurf-11-405-2023, https://doi.org/10.5194/esurf-11-405-2023, 2023
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We simulate the transport of material through numerically simulated river deltas under natural and human-modified (embankment construction and channel dredging) scenarios to understand their impacts on material transport. Human modifications reduce the total area visited by passive particles and alter the amount of time spent within the delta relative to natural conditions. This work can help us understand how future construction may impact land building or ecosystem restoration projects.
Livia Piermattei, Tobias Heckmann, Sarah Betz-Nutz, Moritz Altmann, Jakob Rom, Fabian Fleischer, Manuel Stark, Florian Haas, Camillo Ressl, Michael H. Wimmer, Norbert Pfeifer, and Michael Becht
Earth Surf. Dynam., 11, 383–403, https://doi.org/10.5194/esurf-11-383-2023, https://doi.org/10.5194/esurf-11-383-2023, 2023
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Alpine rivers have experienced strong changes over the last century. In the present study, we explore the potential of historical multi-temporal elevation models, combined with recent topographic data, to quantify 66 years (from 1953 to 2019) of river changes in the glacier forefield of an Alpine catchment. Thereby, we quantify the changes in the river form as well as the related sediment erosion and deposition.
Amande Roque-Bernard, Antoine Lucas, Eric Gayer, Pascal Allemand, Céline Dessert, and Eric Lajeunesse
Earth Surf. Dynam., 11, 363–381, https://doi.org/10.5194/esurf-11-363-2023, https://doi.org/10.5194/esurf-11-363-2023, 2023
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Sediment transport in rivers is an important matter in Earth surface dynamics. We offer a new framework of understanding of the suspended sediment transport through observatory chronicles and a simple model that is able to catch the behavior during a flood event as well as time series in a steep river catchment. We validate our approach in both tropical and alpine environments, which also offers additional estimates of the size of the suspended sediment.
Matthew C. Morriss, Benjamin Lehmann, Benjamin Campforts, George Brencher, Brianna Rick, Leif Anderson, Alexander L. Handwerger, Irina Overeem, and Jeffrey Moore
EGUsphere, https://doi.org/10.5194/egusphere-2023-697, https://doi.org/10.5194/egusphere-2023-697, 2023
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In this manuscript, we investigated the June 28th, 2022 collapse of the Chaos Canyon landslide in Rocky Mountain National Park, Colorado, USA. We found the landslide was moving prior to its collapse, took place at peak spring snowmelt, and temperature modeling indicates the potential presence of permafrost, indicating this collapse could be due to permafrost thaw. We hypothesize this landslide could be part of the broader landscape evolution changes to alpine terrain caused by a warming climate.
Andrea Gasparotto, Stephen E. Darby, Julian Leyland, and Paul A. Carling
Earth Surf. Dynam., 11, 343–361, https://doi.org/10.5194/esurf-11-343-2023, https://doi.org/10.5194/esurf-11-343-2023, 2023
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In this study the processes leading to bank failures in the hypertidal Severn Estuary are studied employing numerical models and field observations. Results highlight that the periodic fluctuations in water levels drive an imbalance in the resisting (hydrostatic pressure) versus driving (pore water pressure) forces causing a frequent oscillation of bank stability between stable (at high tide) and unstable states (at low tide) both on semidiurnal bases and in the spring–neap transition.
Jens Martin Turowski, Gunnar Pruß, Anne Voigtländer, Andreas Ludwig, Angela Landgraf, Florian Kober, and Audrey Bonnelye
EGUsphere, https://doi.org/10.5194/egusphere-2023-76, https://doi.org/10.5194/egusphere-2023-76, 2023
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Rivers can cut into rocks and their strength modulates the river's erosion rates. Yet, it is poorly understood which properties of the rock control its response to erosive action. 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 million between different rock types. We use the data to improve current theory.
Emma Lodes, Dirk Scherler, Renee van Dongen, and Hella Wittmann
Earth Surf. Dynam., 11, 305–324, https://doi.org/10.5194/esurf-11-305-2023, https://doi.org/10.5194/esurf-11-305-2023, 2023
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We explored the ways that boulders and bedrock affect the shapes of hills and valleys by testing how quickly they erode compared to soil. We found that bedrock and boulders mostly erode more slowly than soil and predict that fracture patterns affect where they exist. We also found that streams generally follow fault orientations. Together, our data imply that fractures influence landscapes by weakening bedrock, causing it to erode faster and to eventually form a valley where a stream may flow.
Thomas O. Hoffmann, Yannik Baulig, Stefan Vollmer, Jan H. Blöthe, Karl Auerswald, and Peter Fiener
Earth Surf. Dynam., 11, 287–303, https://doi.org/10.5194/esurf-11-287-2023, https://doi.org/10.5194/esurf-11-287-2023, 2023
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We analyzed more than 440 000 measurements from suspended sediment monitoring to show that suspended sediment concentration (SSC) in large rivers in Germany strongly declined by 50 % between 1990 and 2010. We argue that SSC is approaching the natural base level that was reached during the mid-Holocene. There is no simple explanation for this decline, but increased sediment retention in upstream headwaters is presumably the major reason for declining SSC in the large river channels studied.
Ngai-Ham Chan, Moritz Langer, Bennet Juhls, Tabea Rettelbach, Paul Overduin, Kimberly Huppert, and Jean Braun
Earth Surf. Dynam., 11, 259–285, https://doi.org/10.5194/esurf-11-259-2023, https://doi.org/10.5194/esurf-11-259-2023, 2023
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Arctic river deltas influence how nutrients and soil organic carbon, carried by sediments from the Arctic landscape, are retained or released into the Arctic Ocean. Under climate change, the deltas themselves and their ecosystems are becoming more vulnerable. We build upon previous models to reproduce for the first time an important feature ubiquitous to Arctic deltas and simulate its future under climate warming. This can impact the future of Arctic deltas and the carbon release they moderate.
Kelly Sanks, John Shaw, Samuel Zapp, José Silvestre, Ripul Dutt, and Kyle Straub
EGUsphere, https://doi.org/10.5194/egusphere-2023-545, https://doi.org/10.5194/egusphere-2023-545, 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 management of these vulnerable coastal landscapes.
Katharina Wetterauer and Dirk Scherler
EGUsphere, https://doi.org/10.5194/egusphere-2023-630, https://doi.org/10.5194/egusphere-2023-630, 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 adjacent Swiss glaciers 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.
Sarah Betz-Nutz, Tobias Heckmann, Florian Haas, and Michael Becht
Earth Surf. Dynam., 11, 203–226, https://doi.org/10.5194/esurf-11-203-2023, https://doi.org/10.5194/esurf-11-203-2023, 2023
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The geomorphic activity of LIA lateral moraines is of high interest due to its implications for the sediment fluxes and hazards within proglacial areas. We derived multitemporal models from historical aerial images and recent drone images to investigate the morphodynamics on moraine slopes over time. We found that the highest erosion rates occur on the steepest moraine slopes, which stay active for decades, and that the slope angle explains morphodynamics better than the time since deglaciation.
Haojie Huang
Earth Surf. Dynam., 11, 167–181, https://doi.org/10.5194/esurf-11-167-2023, https://doi.org/10.5194/esurf-11-167-2023, 2023
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Straw checkerboard barriers (SCBs) have been widely used in anti-desertification projects. However, research on this mechanism and its laying length are still lacking. The significance of our work is to analyze some results, which seem simple but lack a theoretical basis from the perspective of turbulence through this model. This study may provide theoretical support for the minimum laying length of SCBs in anti-desertification projects.
Taylor Dorn and Mackenzie Day
Earth Surf. Dynam., 11, 149–165, https://doi.org/10.5194/esurf-11-149-2023, https://doi.org/10.5194/esurf-11-149-2023, 2023
Short summary
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Planetary surfaces are shaped by both wind and water, and their resulting surface features are commonly observed by aerial images. Deep Springs playa, CA, provides a comparable wet-to-dry-transitioning landscape as experienced in Mars' past. Our results, made through collected weather data and drone footage, show that some features, when observed solely by aerial imagery, might be interpreted as being formed by wind when in fact other processes were more influential in their formation.
Daniel Draebing, Tobias Gebhard, and Miriam Pheiffer
Earth Surf. Dynam., 11, 71–88, https://doi.org/10.5194/esurf-11-71-2023, https://doi.org/10.5194/esurf-11-71-2023, 2023
Short summary
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Scarpland formation produced low-inclined slopes susceptible to deep-seated landsliding on geological scales. These landslide-affected slopes are often used for forestry activities today, and interaction between geology and vegetation controls shallow landsliding. Our data show that Feuerletten clays control deep-seated landsliding processes that can be reactivated. When trees are sufficiently dense to provide lateral root cohesion, trees can prevent the occurrence of shallow landslides.
Mohamad Nasr, Adele Johannot, Thomas Geay, Sebastien Zanker, Jules Le Guern, and Alain Recking
Earth Surf. Dynam. Discuss., https://doi.org/10.5194/esurf-2022-68, https://doi.org/10.5194/esurf-2022-68, 2023
Revised manuscript accepted for ESurf
Short summary
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Hydrophones are used to monitor sediment transport in the river by listing to the acoustic noise generated by particles 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.
Christoph Rettinger, Mina Tabesh, Ulrich Rüde, Stefan Vollmer, and Roy M. Frings
Earth Surf. Dynam. Discuss., https://doi.org/10.5194/esurf-2022-72, https://doi.org/10.5194/esurf-2022-72, 2023
Revised manuscript accepted for ESurf
Short summary
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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.
Pascal Allemand, Eric Lajeunesse, Olivier Devauchelle, and Vincent J. Langlois
Earth Surf. Dynam., 11, 21–32, https://doi.org/10.5194/esurf-11-21-2023, https://doi.org/10.5194/esurf-11-21-2023, 2023
Short summary
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We recorded yearly images of a bar of the Vieux-Habitants river, a river located on Basse-Terre (Guadeloupe). These images, combined with measurements of the river discharge, allow us to monitor the evolution of the population of boulders. We estimate the smallest discharge that can move the boulders and calculate the effective transport time. We show that the likelihood of a given boulder remaining at the same location decreases exponentially, with an effective residence time of 17 h.
Shawn M. Chartrand, A. Mark Jellinek, Marwan A. Hassan, and Carles Ferrer-Boix
Earth Surf. Dynam., 11, 1–20, https://doi.org/10.5194/esurf-11-1-2023, https://doi.org/10.5194/esurf-11-1-2023, 2023
Short summary
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Rivers with alternating patterns of shallow and deep flows are commonly observed where a river widens and then narrows, respectively. But what if width changes over time? We use a lab experiment to address this question and find it is possible to decrease and then increase river width at a specific location and observe that flows deepen and then shallow consistent with expectations. Our observations can inform river restoration and climate adaptation programs that emphasize river corridors.
Chendi Zhang, Yuncheng Xu, Marwan A. Hassan, Mengzhen Xu, and Pukang He
Earth Surf. Dynam., 10, 1253–1272, https://doi.org/10.5194/esurf-10-1253-2022, https://doi.org/10.5194/esurf-10-1253-2022, 2022
Short summary
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Step-pool morphology is common in mountain streams. The geomorphic processes of step-pool features closely interact with hydraulic properties, which have limited access due to measurement difficulties. We established a combined approach using both physical experiments and numerical simulations to acquire detailed three-dimensional hydraulics for step-pool morphology, which improves the understanding of the links between hydraulics and morphology for a step-pool feature.
Hemanti Sharma and Todd A. Ehlers
Earth Surf. Dynam. Discuss., https://doi.org/10.5194/esurf-2022-65, https://doi.org/10.5194/esurf-2022-65, 2022
Revised manuscript accepted for ESurf
Short summary
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Seasonality in precipitation (P) and vegetation (V) jointly influence 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.
Yan Yan, Yifei Cui, Xinghui Huang, Jiaojiao Zhou, Wengang Zhang, Shuyao Yin, Jian Guo, and Sheng Hu
Earth Surf. Dynam., 10, 1233–1252, https://doi.org/10.5194/esurf-10-1233-2022, https://doi.org/10.5194/esurf-10-1233-2022, 2022
Short summary
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Landslides present a significant hazard for humans, but continuous landslide monitoring is not yet possible due to their unpredictability. Our study has demonstrated that combing landslide seismic signal analysis, dynamic inversion, and numerical simulation provides a comprehensive and accurate method for studying the landslide process. The approach outlined in this study could be used to support hazard prevention and control in sensitive areas.
Samuel Anderson, Nicole Gasparini, and Joel Johnson
EGUsphere, https://doi.org/10.5194/egusphere-2022-1285, https://doi.org/10.5194/egusphere-2022-1285, 2022
Short summary
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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.
Wei Shi, Hanchao Jiang, Hongyan Xu, Siyuan Ma, Jiawei Fan, Siqi Zhang, Qiaoqiao Guo, and Xiaotong Wei
Earth Surf. Dynam., 10, 1195–1209, https://doi.org/10.5194/esurf-10-1195-2022, https://doi.org/10.5194/esurf-10-1195-2022, 2022
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Alpine valleys reduce the preservation potential of Quaternary sediment in bedrock valley regions, which seriously hinders the study of modern tectonic activity. We report a new method to reveal regional tectonic activity by analyzing fluvial sediments in tectonically active regions. Our analyses identify three segments of different tectonic activities along the upper Min River, eastern Tibet. This method provides a key framework to reveal tectonic activity in other regions of the world.
Sibylle Knapp, Michael Schwenk, and Michael Krautblatter
Earth Surf. Dynam., 10, 1185–1193, https://doi.org/10.5194/esurf-10-1185-2022, https://doi.org/10.5194/esurf-10-1185-2022, 2022
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The Flims area in the Swiss Alps has fascinated the researchers with its complex geological history ever since. Especially the order of events related to the Tamins and Flims rockslides has long been debated. This paper presents novel results based on up to 160 m deep geophysical profiles, which show onlaps of the Bonaduz Formation onto the Tamins deposits (Ils Aults) and thus indicate that the Tamins rockslide occurred first. The consecutive evolution of this landscape is shown in four phases.
Dieter Rickenmann, Lorenz Ammann, Tobias Nicollier, Stefan Boss, Bruno Fritschi, Gilles Antoniazza, Nicolas Steeb, Zheng Chen, Carlos Wyss, and Alexandre Badoux
Earth Surf. Dynam., 10, 1165–1183, https://doi.org/10.5194/esurf-10-1165-2022, https://doi.org/10.5194/esurf-10-1165-2022, 2022
Short summary
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The Swiss plate geophone system has been installed and tested in more than 20 steep gravel-bed streams. It is an indirect bedload transport measuring system. We compare the performance of this system with three alternative surrogate measuring systems, using calibration measurements with direct bedload samples from three field sites and an outdoor flume facility. Three of the four systems resulted in robust calibration relations between signal impulse counts and transported bedload mass.
Alexander Anatol Ermilov, Gergely Benkő, and Sándor Baranya
Earth Surf. Dynam. Discuss., https://doi.org/10.5194/esurf-2022-56, https://doi.org/10.5194/esurf-2022-56, 2022
Revised manuscript accepted for ESurf
Short summary
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A novel, artificial intelligence-based riverbed sediment analysis methodology is introduced, which uses underwater images to identify the characteristic sediment classes. The main novelties of the procedure are the followings: underwater images are used; the method enables continuous mapping of the riverbed along the measurement vessel’s route contrary to conventional techniques; cost-efficient; works without scaling.
Anya S. Leenman and Brett C. Eaton
Earth Surf. Dynam., 10, 1097–1114, https://doi.org/10.5194/esurf-10-1097-2022, https://doi.org/10.5194/esurf-10-1097-2022, 2022
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The supply of sediment (sand and gravel) carried by a stream out of a steep mountain valley is widely thought to control the gradient of the fan-shaped landforms that streams often build where they leave their valley. We tested this idea in a set of
sandboxexperiments with oscillating high and low sediment supply. Even though the average sediment supply never changed, longer oscillations built flatter fans, indicating how wetter climates might affect these mountain landforms.
Shanbai Wu, Ruihua Zhao, Liping Liao, Yunchuan Yang, Yao Wei, and Wenzhi Wei
Earth Surf. Dynam., 10, 1079–1096, https://doi.org/10.5194/esurf-10-1079-2022, https://doi.org/10.5194/esurf-10-1079-2022, 2022
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Granite residual soil landslides are widely distributed in southeastern Guangxi Province, China. To understand the failure mode, the landslide can provide a scientific basis for early warning and prevention. In this study, we conducted artificial flume model tests to investigate the failure mode of granite residual soil landslide. The research provides valuable references for the prevention and early warning of granite residual soil landslide in the southeast of Guangxi.
Shiuan-An Chen, Katerina Michaelides, David A. Richards, and Michael Bliss Singer
Earth Surf. Dynam., 10, 1055–1078, https://doi.org/10.5194/esurf-10-1055-2022, https://doi.org/10.5194/esurf-10-1055-2022, 2022
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Drainage basin erosion rates influence landscape evolution through controlling land surface lowering and sediment flux, but gaps remain in understanding their large-scale patterns and drivers between timescales. We analysed global erosion rates and show that long-term erosion rates are controlled by rainfall, former glacial processes, and basin landform, whilst human activities enhance short-term erosion rates. The results highlight the complex interplay of controls on land surface processes.
Cited articles
Aberle, J. and Järvelä, J.: Flow resistance of emergent rigid and
flexible floodplain vegetation, J. Hydraul. Res., 51, 33–45,
https://doi.org/10.1080/00221686.2012.754795, 2013.
Abu-Aly, T. R., Pasternack, G. B., Wyrick, J. R., Barker, R., Massa, D., and
Johnson, T.: Effects of LiDAR-derived, spatially distributed vegetation
roughness on two-dimensional hydraulics in a gravel-cobble river at flows of
0.2 to 20 times bankfull, Geomorphology, 206, 468–482,
https://doi.org/10.1016/j.geomorph.2013.10.017, 2014.
Allmendinger, N. E., Pizzuto, J. E., Potter, N., Johnson, T. E., and Hession,
W. C.: The influence of riparian vegetation on stream width, eastern
Pennsylvania, USA, Geol. Soc. Am. Bull., 117, 229–243,
https://doi.org/10.1130/B25447.1, 2005.
Amlin, N. M. and Rood, S. B.: Comparative tolerances of riparian willows and
cottonwoods to water-table decline, Wetlands, 22, 338–346, 2002.
Antonarakis, A. S., Richards, K. S., Brasington, J., and Muller, E.:
Determining leaf area index and leafy tree roughness using terrestrial laser
scanning, Water Resour. Res., 46, W06510, https://doi.org/10.1029/2009WR008318, 2010.
Asahi, K., Shimizu, Y., Nelson, J., and Parker, G.: Numerical simulation of
river meandering with self-evolving banks, J. Geophys. Res.-Earth,
118, 1–22, https://doi.org/10.1002/jgrf.20150, 2013.
Baptist, M., Bosch, L., van den Dijkstra, J. T., and Kapinga, S.: Modelling
the effects of vegetation on flow and morphology in rivers, in Large Rivers, Arch. Hydrobiol.,
15, 339–357, 2005.
Baptist, M., Babovic, V., Rodríguez, J., Keijzer, M., Uittenbogaard,
R., Mynett, A., and Verwey, A.: On inducing equations for vegetation
resistance, J. Hydraul. Res., 45, 435–450, 2007.
Bendix, J. and Hupp, C.: Hydrological and geomorphological impacts on
riparian plant communities, Hydrol. Process., 14, 2977–2990, 2000.
Bennett, S. J., Pirim, T., and Barkdoll, B. D.: Using simulated emergent
vegetation to alter stream flow direction within a straight experimental
channel, Geomorphology, 44, 115–126, 2002.
Bertoldi, W. and Siviglia, A.: Modeling vegetation controls on fluvial
morphological trajectories, Geophys. Res. Lett., 41, 1–9,
https://doi.org/10.1002/2014GL061666, 2014.
Blanckaert, K.: Topographic steering, flow recirculation, velocity
redistribution, and bed topography in sharp meander bends, Water Resour.
Res., 46, 1–23, https://doi.org/10.1029/2009WR008303, 2010.
Blondeaux, P. and Seminara, G.: A unified bar-bend theory of river meanders,
J. Fluid Mech., 157, 449–470, 1985.
Boothroyd, R. J., Hardy, R. J., Warburton, J., and Marjoribanks, T. I.: The
importance of accurately representing submerged vegetation morphology in the
numerical prediction of complex river flow, Earth Surf. Process. Landforms,
41, 567–576, https://doi.org/10.1002/esp.3871, 2016.
Boothroyd, R. J., Hardy, R. J., Warburton, J., and Marjoribanks, T. I.:
Modeling complex flow structures and drag around a submerged plant of varied
posture, Water Resour. Res., 53, 2877–2901, https://doi.org/10.1002/2016WR020186, 2017.
Boyd, K., Thatcher, T., and Kellogg, W.: Musselshell River Watershed Plan,
Musselshell Watershed Coalition, 131 pp., 2015.
Braudrick, C. A., Dietrich, W. E., Leverich, G. T., and Sklar, L. S.:
Experimental evidence for the conditions necessary to sustain meandering in
coarse-bedded rivers, P. Natl. Acad. Sci. USA, 106, 16936–16941,
https://doi.org/10.1073/pnas.0909417106, 2009.
Bywater-Reyes, S., Wilcox, A. C., Stella, J. C., and Lightbody, A. F.: Flow
and scour constraints on uprooting of pioneer woody seedlings, Water Resour.
Res., 51, 9190–9206, https://doi.org/10.1002/2014WR016641, 2015.
Bywater-Reyes, S., Wilcox, A. C., and Diehl, R. M.: Multiscale influence of
woody riparian vegetation on fluvial topography quantified with ground-based
and airborne lidar, J. Geophys. Res.-Earth, 122, 1218–1235,
https://doi.org/10.1002/2016JF004058, 2017.
Bywater-Reyes, S., Diehl, R. M., and Wilcox, A. C.: The Influence of a
Vegetated Bar on Channel-Bend Flow Dynamics – Data Set #1, in Earth Surface
Dynamics Data Sets, University of Northern Colorado, available at:
https://digscholarship.unco.edu/esd_data_2018/1, last access: 8 June
2018.
Camporeale, C., Perucca, E., Ridolfi, L., and Gurnell, A.: Modeling the
interactions between river morphodynamics and riparian vegetation, Rev.
Geophys., 51, 1–36, https://doi.org/10.1002/rog.20014, 2013.
Constantine, J. A., McLean, S. R., and Dunne, T.: A mechanism of chute cutoff
along large meandering rivers with uniform floodplain topography, Geol. Soc.
Am. Bull., 122, 855–869, https://doi.org/10.1130/B26560.1, 2010.
Corenblit, D., Tabacchi, E., Steiger, J., and Gurnell, A. M.: Reciprocal
interactions and adjustments between fluvial landforms and vegetation
dynamics in river corridors: A review of complementary approaches,
Earth-Sci. Rev., 84, 56–86, https://doi.org/10.1016/j.earscirev.2007.05.004, 2007.
Corenblit, D., Davies, N. S., Steiger, J., Gibling, M. R., and Bornette, G.:
Considering river structure and stability in the light of evolution:
feedbacks between riparian vegetation and hydrogeomorphology, Earth Surf.
Process. Landforms, 40, 189–207, https://doi.org/10.1002/esp.3643,
2015a.
Corenblit, D., Baas, A., Balke, T., Bouma, T., Fromard, F.,
Garófano-Gómez, V., González, E., Gurnell, A. M.,
Hortobágyi, B., Julien, F., Kim, D., Lambs, L., Stallins, J. A.,
Steiger, J., Tabacchi, E., and Walcker, R.: Engineer pioneer plants respond
to and affect geomorphic constraints similarly along water-terrestrial
interfaces world-wide, Glob. Ecol. Biogeogr., 1–14, https://doi.org/10.1111/geb.12373,
2015b.
Curran, J. C. and Hession, W. C.: Vegetative impacts on hydraulics and
sediment processes across the fluvial system, J. Hydrol., 505, 364–376,
https://doi.org/10.1016/j.jhydrol.2013.10.013, 2013.
Dean, D. J. and Schmidt, J. C.: The role of feedback mechanisms in historic
channel changes of the lower Rio Grande in the Big Bend region,
Geomorphology, 126, 333–349, https://doi.org/10.1016/j.geomorph.2010.03.009, 2011.
Diehl, R. M., Merritt, D. M., Wilcox, A. C., and Scott, M. L.: Applying
functional traits to ecogeomorphic processes in riparian ecosystems,
Bioscience, 67, 729–743, https://doi.org/10.1093/biosci/bix080, 2017a.
Diehl, R. M., Wilcox, A. C., Stella, J. C., Kui, L., Sklar, L. S., and
Lightbody, A.: Fluvial sediment supply and pioneer woody seedlings as a
control on bar-surface topography, Earth Surf. Process. Landforms, 42,
724–734, https://doi.org/10.1002/esp.4017, 2017b.
Dietrich, W. E. and Perron, J. T.: The search for a topographic signature of
life, Nature, 439, 411–418, https://doi.org/10.1038/nature04452, 2006.
Dietrich, W. E. and Smith, J. D.: Influence of the point bar on flow through
curved channels, Water Resour. Res., 19, 1173–1192, 1983.
Dietrich, W. E. and Whiting, P.: Boundary shear stress and sediment
transport in river meanders of sand and gravel, in: River Meandering, AGU
Water Resources Monograph 12, edited by: Ikeda, S. and Parker, G., 1–50,
American Geophysical Union, Washington, DC, 1989.
Eke, E., Parker, G., and Shimizu, Y.: Numerical modeling of erosional and
depositional bank processes in migrating river bends with self-formed width:
Morphodynamics of bar push and bank pull, J. Geophys. Res.-Earth, 119,
1455–1483, https://doi.org/10.1002/2013JF003020, 2014.
Gorrick, S. and Rodríguez, J. F.: Sediment dynamics in a sand bed
stream with riparian vegetation, Water Resour. Res., 48, 1–15,
https://doi.org/10.1029/2011WR011030, 2012.
Gran, K. and Paola, C.: Riparian vegetation controls on braided stream
dynamics, Water Resour. Res., 37, 3275–3283, 2001.
Green, J. C.: Modelling flow resistance in vegetated streams: Review and
development of new theory, Hydrol. Process., 19, 1245–1259,
https://doi.org/10.1002/hyp.5564, 2005.
Gurnell, A.: Plants as river system engineers, Earth Surf. Process.
Landforms, 39, 4–25, https://doi.org/10.1002/esp.3397, 2014.
Gurnell, A. and Petts, G.: Trees as riparian engineers: the Tagliamento
River, Italy, Earth Surf. Process. Landforms, 31, 1558–1574,
https://doi.org/10.1002/esp.1342, 2006.
Gurnell, A. M., Petts, G. E., Hannah, D. M., Smith, B. P. G., Edwards, P.
J., Kollmann, J., Ward, J. V., and Tockner, K.: Riparian vegetation and
island formation along the gravel-bed Fiume Tagliamento, Italy, Earth Surf.
Process. Landforms, 26, 31–62,
https://doi.org/10.1002/1096-9837(200101)26:1< 31::AID-ESP155>3.0.CO;2-Y, 2001.
Ikeda, S., Parker, G., and Sawai, K.: Bend theory of river meanders. Part 1.
Linear development, J. Fluid Mech., 112, 363–377,
https://doi.org/10.1017/S0022112081000451, 1981.
Iwasaki, T., Shimizu, Y., and Kimura, I.: Numerical simulation of bar and
bank erosion in a vegetated floodplain: A case study in the Otofuke River,
Adv. Water Resour., 93, 118–134, https://doi.org/10.1016/j.advwatres.2015.02.001, 2015.
Jalonen, J., Järvelä, J., and Aberle, J.: Leaf area index as
vegetation density measure for hydraulic analyses, J. Hydraul. Eng., 139,
461–469, https://doi.org/10.1061/(ASCE)HY.1943-7900.0000700, 2013.
James, C., Birkhead, A., and Jordanova, A.: Flow resistance of emergent
vegetation, J. Hydraul. Res., 42, 37–41, 2004.
Karrenberg, S., Edwards, P., and Kollmann, J.: The life history of Salicaceae
living in the active zone of floodplains, Freshw. Biol., 47, 733–748,
2002.
Kleinhans, M. G. and van den Berg, J. H.: River channel and bar patterns
explained and predicted by an empirical and a physics-based method, Earth
Surf. Process. Landforms, 36, 721–738, https://doi.org/10.1002/esp.2090, 2011.
Kui, L., Stella, J., Lightbody, A., and Wilcox, A. C.: Ecogeomorphic
feedbacks and flood loss of riparian tree seedlings in meandering channel
experiments, Water Resour. Res., 50, 9366–9384, https://doi.org/10.1002/2014WR015719,
2014.
Legleiter, C. J., Harrison, L. R., and Dunne, T.: Effect of point bar
development on the local force balance governing flow in a simple,
meandering gravel bed river, J. Geophys. Res., 116, F01005,
https://doi.org/10.1029/2010JF001838, 2011.
Lightbody, A., Skorko, K., Kui, L., Stella, J., and Wilcox, A.: Hydraulic
and topographic response of sand-bed rivers to woody riparian seedlings:
field-scale laboratory methods and results, 2012 Fall Meeting, AGU, San
Fransisco, CA, USA, 3–7 December, 2012.
Manners, R., Schmidt, J., and Wheaton, J. M.: Multiscalar model for the
determination of spatially explicit riparian vegetation roughness, J.
Geophys. Res.-Earth, 118, 65–83, https://doi.org/10.1029/2011JF002188, 2013.
Manners, R. B., Wilcox, A. C., Kui, L., Lightbody, A. F., Stella, J. C., and
Sklar, L. S.: When do plants modify fluvial processes? Plant-hydraulic
interactions under variable flow and sediment supply rates, J. Geophys. Res.-Earth,
120, 325–345, https://doi.org/10.1002/2014JF003265, 2015.
Marjoribanks, T. I., Hardy, R. J., Lane, S. N., and Tancock, M. J.:
Patch-scale representation of vegetation within hydraulic models, Earth
Surf. Process. Landforms, 42, 699–710, https://doi.org/10.1002/esp.4015, 2017.
Mueller, E. R. and Pitlick, J.: Sediment supply and channel morphology in
mountain river systems: 2. Single thread to braided transitions, J. Geophys.
Res.-Earth, 119, 1516–1541, https://doi.org/10.1002/2013JF003045, 2014.
Murray, A. B. and Paola, C.: Modelling the effect of vegetation on channel
pattern in bedload rivers, Earth Surf. Process. Landforms, 28, 131–143,
https://doi.org/10.1002/esp.428, 2003.
Nelson, J. M.: iRIC Software: FaSTMECH solver manual, USGS, 1–36, 2013.
Nelson, J. M. and Smith, J. D.: Flow in meandering channels with natural
topography, in River Meandering, Water Resour. Monogr., vol. 12, edited by:
Ikeda, S. and Parker, G., AGU, Washington, DC, 69–102, 1989.
Nelson, J. M., Bennett, J. P., and Wiele, S. M.: Flow and sediment-transport
modeling, in Tools in Fluvial Geomorphology, edited by: Kondolf, G. M. and
Piégay, H., Wiley, Chichester, 539–576, 2003.
Nelson, J. M., Shimizu, Y., Abe, T., Asahi, K., Gamou, M., Inoue, T.,
Iwasaki, T., Kakinuma, T., Kawamura, S., Kimura, I., Kyuka, T., McDonald, R.
R., Nabi, M., Nakatsugawa, M., Simões, F. R., Takebayashi, H., and
Watanabe, Y.: The international river interface cooperative: Public domain
flow and morphodynamics software for education and applications, Adv. Water
Resour., 93, 62–74, https://doi.org/10.1016/j.advwatres.2015.09.017, 2016.
Nepf, H. M.: Drag, turbulence, and diffusion in flow through emergent
vegetation, Water Resour. Res., 35, 479–489, https://doi.org/10.1029/1998WR900069,
1999.
Nepf, H. M.: Hydrodynamics of vegetated channels, J. Hydraul. Res., 503,
262–279, https://doi.org/10.1080/00221686.2012.696559, 2012.
Nepf, H. M., Rominger, J., and Zong, L.: Coherent flow structures in vegetated
channels, in Coherent Flow Structures at Earth's Surface, edited by:
Venditti, J. G., Best, J. L., Church, M., and Hardy, R. J.,
Wiley-Blackwell, 135–147, 2013.
Nicholas, A. P., Ashworth, P. J., Sambrook Smith, G. H., and Sandbach, S. D.:
Numerical simulation of bar and island morphodynamics in anabranching
megarivers, J. Geophys. Res.-Earth, 118, 1–26,
https://doi.org/10.1002/jgrf.20132, 2013.
Osterkamp, W. R. and Hupp, C. R.: Fluvial processes and vegetation –
Glimpses of the past, the present, and perhaps the future, Geomorphology,
116, 274–285, https://doi.org/10.1016/j.geomorph.2009.11.018, 2010.
Osterkamp, W. R., Hupp, C. R., and Stoffel, M.: The interactions between
vegetation and erosion: New directions for research at the interface of
ecology and geomorphology, Earth Surf. Process. Landforms, 37, 23–36,
https://doi.org/10.1002/esp.2173, 2012.
Parker, G., Shimizu, Y., Wilkerson, G. V., Eke, E. C., Abad, J. D., Lauer,
J. W., Paola, C., Dietrich, W. E., and Voller, V. R.: A new framework for
modeling the migration of meandering rivers, Earth Surf. Process. Landforms,
36, 70–86, https://doi.org/10.1002/esp.2113, 2011.
Pasternack, G. B.: 2D modeling and ecohydraulic analysis, University of
California, Davis, CA, 168 pp., 2011.
Rominger, J. T., Lightbody, A. F., Nepf, H.: Effects of added vegetation on
sand bar stability and stream hydrodynamics, J. Hydraul. Eng., 136,
994–1002, https://doi.org/10.1061/(ASCE)HY.1943-7900.0000215, 2010.
Rood, S. B., Kalischuk, A. R., and Mahoney, J. M.: Initial cottonwood
seedling recruitment following the flood of the century of the Oldman River,
Alberta, Canada, Wetlands, 18, 557–570, 1998.
Schnauder, I. and Moggridge, H. L.: Vegetation and hydraulic-morphological
interactions at the individual plant, patch and channel scale, Aquat. Sci.,
71, 318–330, https://doi.org/10.1007/s00027-009-9202-6, 2009.
Segura, C. and Pitlick, J.: Coupling fluvial-hydraulic models to predict
gravel transport in spatially variable flows, J. Geophys. Res.-Earth,
120, 834–855, https://doi.org/10.1002/2014JF003302, 2015.
Straatsma, M. W., Warmink, J. J., and Middelkoop, H.: Two novel methods for
field measurements of hydrodynamic density of floodplain vegetation using
terrestrial laser scanning and digital parallel photography, Int. J. Remote
Sens., 29, 1595–1617, https://doi.org/10.1080/01431160701736455, 2008.
Termini, D.: Experimental analysis of the effect of vegetation on flow and
bed shear stress distribution in high-curvature bends, Geomorphology, 274,
1–10, https://doi.org/10.1016/j.geomorph.2016.08.031, 2016.
Thorne, S. D. and Furbish, D. J.: Influences of coarse bank roughness on
flow within a sharply curved river bend, Geomorphology, 12, 241–257,
https://doi.org/10.1016/0169-555X(95)00007-R, 1995.
Tonina, D. and Jorde, K.: Hydraulic modeling approaches for ecohydraulic
studies: 3D , 2D , 1D and non-numerical models, in: Ecohydraulics: An
Integrated Approach, John Wiley & Sons, Ltd, 31–74, 2013.
Tooth, S. and Nanson, G. C.: The role of vegetation in the formation of
anabranching channels in an ephemeral river, Northern plains, arid central
Australia, Hydrol. Process., 14, 3099–3117, 2000.
Tooth, S., Jansen, J. D., Nanson, G. C., Coulthard, T. J., and Pietsch, T.:
Riparian vegetation and the late Holocene development of an anabranching
river: Magela Creek, northern Australia, Geol. Soc. Am. Bull., 120,
1021–1035, https://doi.org/10.1130/B26165.1, 2008.
van de Lageweg, W. I., van Dijk, W. M., Baar, A. W., Rutten, J., and
Kleinhans, M. G.: Bank pull or bar push: What drives scroll-bar formation in
meandering rivers?, Geology, 42, 319–322, https://doi.org/10.1130/G35192.1, 2014.
Van Dijk, W. M., Teske, R., Van De Lageweg, W. I., and Kleinhans, M. G.:
Effects of vegetation distribution on experimental river channel dynamics,
Water Resour. Res., 49, 7558–7574, https://doi.org/10.1002/2013WR013574, 2013.
van Dijk, W. M., Schuurman, F., van de Lageweg, W. I., and Kleinhans, M. G.:
Bifurcation instability and chute cutoff development in meandering
gravel-bed rivers, Geomorphology, 213, 277–291,
https://doi.org/10.1016/j.geomorph.2014.01.018, 2014.
van Oorschot, M., Kleinhans, M., Geerling, G., and Middelkoop, H.: Distinct
patterns of interaction between vegetation and morphodynamics, Earth Surf.
Process. Landforms, 41, 791–808, https://doi.org/10.1002/esp.3864, 2016.
Vargas-Luna, A., Crosato, A., and Uijttewaal, W. S. J.: Effects of vegetation
on flow and sediment transport: Comparative analyses and validation of
predicting models, Earth Surf. Process. Landforms, 40, 157–176,
https://doi.org/10.1002/esp.3633, 2015.
Vargas-Luna, A., Crosato, A., Calvani, G., and Uijttewaal, W. S. J.:
Representing plants as rigid cylinders in experiments and models, Adv. Water
Resour., 93, 205–222, https://doi.org/10.1016/j.advwatres.2015.10.004, 2016.
Västilä, K. and Järvelä, J.: Modeling the flow resistance of
woody vegetation using physically-based properties of the foliage and stem,
Water Resour. Res., 50, 1–17, https://doi.org/10.1002/2013WR013819, 2014.
Västilä, K., Järvelä, J., and Aberle, J.: Characteristic
reference areas for estimating flow resistance of natural foliated
vegetation, J. Hydrol., 492, 49–60, https://doi.org/10.1016/j.jhydrol.2013.04.015,
2013.
Wang, C., Wang, Q., Meire, D., Ma, W., Wu, C., Meng, Z., Van de Koppel, J.,
Troch, P., Verhoeven, R., De Mulder, T., and Temmerman, S.: Biogeomorphic
feedback between plant growth and flooding causes alternative stable states
in an experimental floodplain, Adv. Water Resour., 93, 223–235,
https://doi.org/10.1016/j.advwatres.2015.07.003, 2016.
Whiting, P. J.: The effect of stage on flow and components of the local force
balance, Earth Surf. Process. Landforms, 22, 517–530,
https://doi.org/10.1002/(SICI)1096-9837(199706)22:6<517::AID-ESP707>3.0.CO;2-M, 1997.
Whittaker, P., Wilson, C., Aberle, J., Rauch, H. P., and Xavier, P.: A drag
force model to incorporate the reconfiguration of full-scale riparian trees
under hydrodynamic loading, J. Hydraul. Res., 51, 569–580,
https://doi.org/10.1080/00221686.2013.822936, 2013.
Wilcox, A. C.: U-026 – Riparian Vegetation Feedbacks, UNAVCO, available at:
https://tls.unavco.org/projects/U-026/ (last access: 8 June 2018),
2013.
Wilcox, A. C. and Shafroth, P. B.: Coupled hydrogeomorphic and
woody-seedling responses to controlled flood releases in a dryland river,
Water Resour. Res., 49, 2843–2860, https://doi.org/10.1002/wrcr.20256, 2013.
Wintenberger, C. L., Rodrigues, S., Bréhéret, J.-G., and Villar, M.:
Fluvial islands: First stage of development from nonmigrating (forced) bars
and woody-vegetation interactions, Geomorphology, 246, 305–320,
https://doi.org/10.1016/j.geomorph.2015.06.026, 2015.
Yager, E. M. and Schmeeckle, M. W.: The influence of vegetation on
turbulence and bed load transport, J. Geophys. Res.-Earth, 118,
1585–1601, https://doi.org/10.1002/jgrf.20085, 2013.
Short summary
Channel bends and bars make up an important physical and ecological unit within rivers. Many riparian vegetation species need river bars for their life cycle, colonizing bars after flooding events. Once vegetation is established on bars, they can alter the flow and patterns of erosion and deposition. We used a hydraulic model to quantify the impact such riparian vegetation of various sizes and densities has on flow dynamics and inferred the expected changes in river erosion and deposition.
Channel bends and bars make up an important physical and ecological unit within rivers. Many...