Articles | Volume 6, issue 1
https://doi.org/10.5194/esurf-6-163-2018
© 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-6-163-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
05 Mar 2018
Research article |
| 05 Mar 2018
| 05 Mar 2018
Topographical change caused by moderate and small floods in a gravel bed ephemeral river – a depth-averaged morphodynamic simulation approach
Department of Geographical and Historical Studies, University of
Eastern Finland, Joensuu, Yliopistokatu 2, P.O. Box 111, 80101 Joensuu,
Finland
Department of Geography and Geology, University of Turku,
20014 Turku, Finland
Mikel Calle
National Museum of Natural Sciences, Spanish Research Council (CSIC),
Madrid, Calle de Serrano 117, 28006 Madrid, Spain
Gerardo Benito
National Museum of Natural Sciences, Spanish Research Council (CSIC),
Madrid, Calle de Serrano 117, 28006 Madrid, Spain
Antero Kukko
Department of Remote Sensing and Photogrammetry, Finnish Geospatial
Research Institute, National Land Survey of Finland, Kirkkonummi,
Geodeetinrinne 2, 02430 Masala, Finland
Department of Built Environment, Aalto University, Espoo,
Vaisalantie 8, P.O. Box 15800, 00076 Aalto, Finland
Harri Kaartinen
Department of Remote Sensing and Photogrammetry, Finnish Geospatial
Research Institute, National Land Survey of Finland, Kirkkonummi,
Geodeetinrinne 2, 02430 Masala, Finland
Department of Geography and Geology, University of Turku,
20014 Turku, Finland
Juha Hyyppä
Department of Remote Sensing and Photogrammetry, Finnish Geospatial
Research Institute, National Land Survey of Finland, Kirkkonummi,
Geodeetinrinne 2, 02430 Masala, Finland
Hannu Hyyppä
Department of Built Environment, Aalto University, Espoo,
Vaisalantie 8, P.O. Box 15800, 00076 Aalto, Finland
Petteri Alho
Department of Remote Sensing and Photogrammetry, Finnish Geospatial
Research Institute, National Land Survey of Finland, Kirkkonummi,
Geodeetinrinne 2, 02430 Masala, Finland
Department of Geography and Geology, University of Turku,
20014 Turku, Finland
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Barchans are fast-moving sand dunes which form large populations (swarms) on Earth and Mars. We show that a small range of model parameters produces swarms in which dune size does not vary downwind – something that is observed in nature but not when using earlier models. We also show how the shape of dunes and the spatial patterns they form are affected by wind direction. This work furthers our understanding of the interplay between environmental drivers, dune interactions, and swarm properties.
Jeffrey Keck, Erkan Istanbulluoglu, Benjamin Campforts, Gregory Tucker, and Alexander Horner-Devine
Earth Surf. Dynam., 12, 1165–1191, https://doi.org/10.5194/esurf-12-1165-2024, https://doi.org/10.5194/esurf-12-1165-2024, 2024
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MassWastingRunout (MWR) is a new landslide runout model designed for sediment transport, landscape evolution, and hazard assessment applications. MWR is written in Python and includes a calibration utility that automatically determines best-fit parameters for a site and empirical probability density functions of each parameter for probabilistic model implementation. MWR and Jupyter Notebook tutorials are available as part of the Landlab package at https://github.com/landlab/landlab.
Ariane Mueting and Bodo Bookhagen
Earth Surf. Dynam., 12, 1121–1143, https://doi.org/10.5194/esurf-12-1121-2024, https://doi.org/10.5194/esurf-12-1121-2024, 2024
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This study investigates the use of optical PlanetScope data for offset tracking of the Earth's surface movement. We found that co-registration accuracy is locally degraded when outdated elevation models are used for orthorectification. To mitigate this bias, we propose to only correlate scenes acquired from common perspectives or base orthorectification on more up-to-date elevation models generated from PlanetScope data alone. This enables a more detailed analysis of landslide dynamics.
Cho-Hee Lee, Yeong Bae Seong, John Weber, Sangmin Ha, Dong-Eun Kim, and Byung Yong Yu
Earth Surf. Dynam., 12, 1091–1120, https://doi.org/10.5194/esurf-12-1091-2024, https://doi.org/10.5194/esurf-12-1091-2024, 2024
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Topographic metrics were used to understand changes due to tectonic activity. We evaluated the relative tectonic activity along the Ulsan Fault Zone (UFZ), one of the most active fault zones in South Korea. We divided the UFZ into five segments, based on the spatial variation in activity. We modeled the landscape evolution of the study area and interpreted tectono-geomorphic history during which the northern part of the UFZ experienced asymmetric uplift, while the southern part did not.
Juditha Aga, Livia Piermattei, Luc Girod, Kristoffer Aalstad, Trond Eiken, Andreas Kääb, and Sebastian Westermann
Earth Surf. Dynam., 12, 1049–1070, https://doi.org/10.5194/esurf-12-1049-2024, https://doi.org/10.5194/esurf-12-1049-2024, 2024
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Coastal rock cliffs on Svalbard are considered to be fairly stable; however, long-term trends in coastal-retreat rates remain unknown. This study examines changes in the coastline position along Brøggerhalvøya, Svalbard, using aerial images from 1970, 1990, 2010, and 2021. Our analysis shows that coastal-retreat rates accelerate during the period 2010–2021, which coincides with increasing storminess and retreating sea ice.
Aaron T. Steelquist, Gustav B. Seixas, Mary L. Gillam, Sourav Saha, Seulgi Moon, and George E. Hilley
Earth Surf. Dynam., 12, 1071–1089, https://doi.org/10.5194/esurf-12-1071-2024, https://doi.org/10.5194/esurf-12-1071-2024, 2024
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The rates at which rivers erode their bed can be used to interpret the geologic history of a region. However, these rates depend significantly on the time window over which you measure. We use multiple dating methods to determine an incision rate for the San Juan River and compare it to regional rates with longer timescales. We demonstrate how specific geologic events, such as cutoffs of bedrock meander bends, are likely to preserve material we can date but also bias the rates we measure.
Johannes Leinauer, Michael Dietze, Sibylle Knapp, Riccardo Scandroglio, Maximilian Jokel, and Michael Krautblatter
Earth Surf. Dynam., 12, 1027–1048, https://doi.org/10.5194/esurf-12-1027-2024, https://doi.org/10.5194/esurf-12-1027-2024, 2024
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Massive rock slope failures are a significant alpine hazard and change the Earth's surface. Therefore, we must understand what controls the preparation of such events. By correlating 4 years of slope displacements with meteorological and seismic data, we found that water from rain and snowmelt is the most important driver. Our approach is applicable to similar sites and indicates where future climatic changes, e.g. in rain intensity and frequency, may alter the preparation of slope failure.
Julien Coatléven and Benoit Chauveau
Earth Surf. Dynam., 12, 995–1026, https://doi.org/10.5194/esurf-12-995-2024, https://doi.org/10.5194/esurf-12-995-2024, 2024
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The aim of this paper is to explain how to incorporate classical water flow routines into landscape evolution models while keeping numerical errors under control. The key idea is to adapt filtering strategies to eliminate anomalous numerical errors and mesh dependencies, as confirmed by convergence tests with analytic solutions. The emergence of complex geomorphic structures is now driven exclusively by nonlinear heterogeneous physical processes rather than by random numerical artifacts.
Chloé Seibert, Cecilia McHugh, Chris Paola, Leonardo Seeber, and James Tucker
EGUsphere, https://doi.org/10.5194/egusphere-2024-2011, https://doi.org/10.5194/egusphere-2024-2011, 2024
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We propose a new mechanism of widespread surficial co-seismic sediment entrainment by seismic motions in subduction earthquakes. Our physical experiments show that shear from sediment-water relative velocities from long-period earthquake motions can mobilize synthetic fine marine sediment. High frequency vertical shaking can enhance this mobilization. According to our results, the largest tsunamigenic earthquakes that rupture to the trench may be distinguishable in the sedimentary record.
Jingjuan Li, John D. Jansen, Xuanmei Fan, Zhiyong Ding, Shugang Kang, and Marco Lovati
Earth Surf. Dynam., 12, 953–971, https://doi.org/10.5194/esurf-12-953-2024, https://doi.org/10.5194/esurf-12-953-2024, 2024
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In this study, we investigated the geomorphology, sedimentology, and chronology of Tuanjie (seven terraces) and Taiping (three terraces) terraces in Diexi, eastern Tibetan Plateau. Results highlight that two damming and three outburst events occurred in the area during the late Pleistocene, and the outburst floods have been a major factor in the formation of tectonically active mountainous river terraces. Tectonic activity and climatic changes play a minor role.
Jens Martin Turowski, Fergus McNab, Aaron Bufe, and Stefanie Tofelde
EGUsphere, https://doi.org/10.5194/egusphere-2024-2342, https://doi.org/10.5194/egusphere-2024-2342, 2024
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Channel belts comprise the area that is affected by a river due to lateral migration and floods. As a landform, they affect local water resources, flood hazard, and often host unique ecological communities. Here, we develop a model describing the evolution of channel belt area over time. The model connects the behaviour of the river to the evolution of the channel belt over a timescale of centuries. A comparison to selected data from experiments and real river systems is favourable.
Andrew Hollyday, Maureen E. Raymo, Jacqueline Austermann, Fred Richards, Mark Hoggard, and Alessio Rovere
Earth Surf. Dynam., 12, 883–905, https://doi.org/10.5194/esurf-12-883-2024, https://doi.org/10.5194/esurf-12-883-2024, 2024
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Sea level was significantly higher during the Pliocene epoch, around 3 million years ago. The present-day elevations of shorelines that formed in the past provide a data constraint on the extent of ice sheet melt and the global sea level response under warm Pliocene conditions. In this study, we identify 10 escarpments that formed from wave-cut erosion during Pliocene times and compare their elevations with model predictions of solid Earth deformation processes to estimate past sea level.
Gregory A. Ruetenik, Ken L. Ferrier, and Odin Marc
Earth Surf. Dynam., 12, 863–881, https://doi.org/10.5194/esurf-12-863-2024, https://doi.org/10.5194/esurf-12-863-2024, 2024
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Fluvial sediment fluxes increased dramatically in Taiwan during Typhoon Morakot in 2009, which produced some of the heaviest landsliding on record. We analyzed fluvial discharge and suspended sediment concentration data at 87 gauging stations across Taiwan to quantify fluvial sediment responses since Morakot. In basins heavily impacted by landsliding, rating curve coefficients sharply increased during Morakot and then declined exponentially with a characteristic decay time of <10 years.
Nil Carrion-Bertran, Albert Falqués, Francesca Ribas, Daniel Calvete, Rinse de Swart, Ruth Durán, Candela Marco-Peretó, Marta Marcos, Angel Amores, Tim Toomey, Àngels Fernández-Mora, and Jorge Guillén
Earth Surf. Dynam., 12, 819–839, https://doi.org/10.5194/esurf-12-819-2024, https://doi.org/10.5194/esurf-12-819-2024, 2024
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The sensitivity to the wave and sea-level forcing sources in predicting a 6-month embayed beach evolution is assessed using two different morphodynamic models. After a successful model calibration using in situ data, other sources are applied. The wave source choice is critical: hindcast data provide wrong results due to an angle bias, whilst the correct dynamics are recovered with the wave conditions from an offshore buoy. The use of different sea-level sources gives no significant differences.
Jean Vérité, Clément Narteau, Olivier Rozier, Jeanne Alkalla, Laurie Barrier, and Sylvain Courrech du Pont
EGUsphere, https://doi.org/10.5194/egusphere-2024-1634, https://doi.org/10.5194/egusphere-2024-1634, 2024
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Using a numerical model in 2D, we study how two identical dunes interact with each other when exposed to reversing winds. Depending on the distance between the dunes, they either repel or attract each other until they reach an equilibrium distance, which is controlled by the wind strength, wind reversal frequency and dune size. This process is controlled by the modification of wind flow over dunes of various shape, influencing the sediment transport downstream.
Abhishek Kashyap, Kristen Cook, and Mukunda Dev Behera
EGUsphere, https://doi.org/10.5194/egusphere-2024-1618, https://doi.org/10.5194/egusphere-2024-1618, 2024
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High-mountain floods exhibit a significant geomorphic hazard, often triggered by rapid snowmelt, extreme precipitation, glacial lake outbursts, and natural failures of dams. Such high-magnitude floods can have catastrophic impacts on downstream communities, ecosystems, and infrastructure. These floods demonstrate the significance of understanding the complex interaction of climatic, hydrological, and geological forces in high mountain regions.
Thomas J. Barnes, Thomas V. Schuler, Simon Filhol, and Karianne S. Lilleøren
Earth Surf. Dynam., 12, 801–818, https://doi.org/10.5194/esurf-12-801-2024, https://doi.org/10.5194/esurf-12-801-2024, 2024
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In this paper, we use machine learning to automatically outline landforms based on their characteristics. We test several methods to identify the most accurate and then proceed to develop the most accurate to improve its accuracy further. We manage to outline landforms with 65 %–75 % accuracy, at a resolution of 10 m, thanks to high-quality/high-resolution elevation data. We find that it is possible to run this method at a country scale to quickly produce landform inventories for future studies.
Eric Petersen, Regine Hock, and Michael G. Loso
Earth Surf. Dynam., 12, 727–745, https://doi.org/10.5194/esurf-12-727-2024, https://doi.org/10.5194/esurf-12-727-2024, 2024
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Ice cliffs are melt hot spots that increase melt rates on debris-covered glaciers which otherwise see a reduction in melt rates. In this study, we show how surface runoff streams contribute to the generation, evolution, and survival of ice cliffs by carving into the glacier and transporting rocky debris. On Kennicott Glacier, Alaska, 33 % of ice cliffs are actively influenced by streams, while nearly half are within 10 m of streams.
Daniel O'Hara, Liran Goren, Roos M. J. van Wees, Benjamin Campforts, Pablo Grosse, Pierre Lahitte, Gabor Kereszturi, and Matthieu Kervyn
Earth Surf. Dynam., 12, 709–726, https://doi.org/10.5194/esurf-12-709-2024, https://doi.org/10.5194/esurf-12-709-2024, 2024
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Understanding how volcanic edifices develop drainage basins remains unexplored in landscape evolution. Using digital evolution models of volcanoes with varying ages, we quantify the geometries of their edifices and associated drainage basins through time. We find that these metrics correlate with edifice age and are thus useful indicators of a volcano’s history. We then develop a generalized model for how volcano basins develop and compare our results to basin evolution in other settings.
Brayden Noh, Omar Wani, Kieran B. J. Dunne, and Michael P. Lamb
Earth Surf. Dynam., 12, 691–708, https://doi.org/10.5194/esurf-12-691-2024, https://doi.org/10.5194/esurf-12-691-2024, 2024
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In this paper, we propose a framework for generating risk maps that provide the probabilities of erosion due to river migration. This framework uses concepts from probability theory to learn the river migration model's parameter values from satellite data while taking into account parameter uncertainty. Our analysis shows that such geomorphic risk estimation is more reliable than models that do not explicitly consider various sources of variability and uncertainty.
Steven Y. J. Lai, David Amblas, Aaron Micallef, and Hervé Capart
Earth Surf. Dynam., 12, 621–640, https://doi.org/10.5194/esurf-12-621-2024, https://doi.org/10.5194/esurf-12-621-2024, 2024
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This study explores the creation of submarine canyons and hanging-wall fans on active faults, which can be defined by gravity-dominated breaching and underflow-dominated diffusion processes. The study reveals the self-similarity in canyon–fan long profiles, uncovers Hack’s scaling relationship and proposes a formula to estimate fan volume using canyon length. This is validated by global data from source-to-sink systems, providing insights into deep-water sedimentary processes.
Anuska Narayanan, Sagy Cohen, and John R. Gardner
Earth Surf. Dynam., 12, 581–599, https://doi.org/10.5194/esurf-12-581-2024, https://doi.org/10.5194/esurf-12-581-2024, 2024
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This study investigates the profound impact of deforestation in the Amazon on sediment dynamics. Novel remote sensing data and statistical analyses reveal significant changes, especially in heavily deforested regions, with rapid effects within a year. In less disturbed areas, a 1- to 2-year lag occurs, influenced by natural sediment shifts and human activities. These findings highlight the need to understand the consequences of human activity for our planet's future.
Jacob Hardt, Tim P. Dooley, and Michael R. Hudec
Earth Surf. Dynam., 12, 559–579, https://doi.org/10.5194/esurf-12-559-2024, https://doi.org/10.5194/esurf-12-559-2024, 2024
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We investigate the reaction of salt structures on ice sheet transgressions. We used a series of sandbox models that enabled us to experiment with scaled-down versions of salt bodies from northern Germany. The strongest reactions occurred when large salt pillows were partly covered by the ice load. Subsurface salt structures may play an important role in the energy transition, e.g., as energy storage. Thus, it is important to understand all processes that affect their stability.
Jon D. Pelletier, Robert G. Hayes, Olivia Hoch, Brendan Fenerty, and Luke A. McGuire
EGUsphere, https://doi.org/10.5194/egusphere-2024-1153, https://doi.org/10.5194/egusphere-2024-1153, 2024
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On the gently sloping landscapes next to mountain fronts, junction angles tend to be lower (more acute), while in bedrock landscapes where the initial landscape or tectonic forcing is likely more spatially variable, junction angles tend to be larger (more obtuse). We demonstrate this using an analysis of ~20 million junction angles for the U.S.A., augmented by analyses of the Loess Plateau, China, and synthetic landscapes.
Julius Reich and Axel Winterscheid
EGUsphere, https://doi.org/10.5194/egusphere-2024-579, https://doi.org/10.5194/egusphere-2024-579, 2024
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Analysing the geometry and the dynamics of riverine bedforms (so-called dunetracking) is important for various fields of application and contributes to a sound and efficient river and sediment management. We developed a new tool, which enables a robust estimation of bedform characteristics and with which comprehensive sensitivity analyses can be carried out. Using a test dataset, we show that the selection of input parameters of dunetracking tools can have a significant impact on the results.
Alexander B. Prescott, Jon D. Pelletier, Satya Chataut, and Sriram Ananthanarayan
EGUsphere, https://doi.org/10.5194/egusphere-2024-1138, https://doi.org/10.5194/egusphere-2024-1138, 2024
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Many Earth surface processes are controlled by the spatial pattern of surface water flow. We review commonly used methods for predicting such spatial patterns in digital landform models and document the pros and cons of commonly used methods. We propose a new method that is designed to minimize those limitations and show that it works well in a variety of test cases.
Prakash Pokhrel, Mikael Attal, Hugh D. Sinclair, Simon M. Mudd, and Mark Naylor
Earth Surf. Dynam., 12, 515–536, https://doi.org/10.5194/esurf-12-515-2024, https://doi.org/10.5194/esurf-12-515-2024, 2024
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Pebbles become increasingly rounded during downstream transport in rivers due to abrasion. This study quantifies pebble roundness along the length of two Himalayan rivers. We demonstrate that roundness increases with downstream distance and that the rates are dependent on rock type. We apply this to reconstructing travel distances and hence the size of ancient Himalaya. Results show that the ancient river network was larger than the modern one, indicating that there has been river capture.
Janbert Aarnink, Tom Beucler, Marceline Vuaridel, and Virginia Ruiz-Villanueva
EGUsphere, https://doi.org/10.5194/egusphere-2024-792, https://doi.org/10.5194/egusphere-2024-792, 2024
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This study presents a novel CNN approach for detecting instream large wood in rivers, addressing the need for flexible monitoring methods that can be used on a variety of data sources. Leveraging a database of 15,228 fully labeled images, our model achieved a 67 % weighted mean average precision. Fine-tuning parameters and sampling techniques offer potential for further performance enhancement of more than 10 % in certain cases, promising valuable insights for ecosystem management.
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.
Dominik Amschwand, Jonas Wicky, Martin Scherler, Martin Hoelzle, Bernhard Krummenacher, Anna Haberkorn, Christian Kienholz, and Hansueli Gubler
EGUsphere, https://doi.org/10.5194/egusphere-2024-172, https://doi.org/10.5194/egusphere-2024-172, 2024
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Rock glaciers are comparatively climate-resilient coarse-debris permafrost landforms. We estimate the energy budget of the seasonally thawing active layer (AL) of rock glacier Murtèl (Swiss Alps) based on a novel sub-surface sensor array. In the coarse-blocky AL during the thaw season, heat is transferred by thermal radiation and air convection. The ground heat flux is largely used to melt ground ice in the AL that protects to some degree the permafrost body beneath.
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.
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.
Caroline Fenske, Jean Braun, François Guillocheau, and Cécile Robin
EGUsphere, https://doi.org/10.5194/egusphere-2024-160, https://doi.org/10.5194/egusphere-2024-160, 2024
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We have developed a new numerical model to represent the formation of ferricretes which are iron-rich, hard layers found in soils and at the surface of the Earth. We assume that the formation mechanism implies variations in the height of the water table and that the hardening rate is proportional to precipitation. The model allows us to quantify the potential feedbacks they generate on the surface topography and the thickness of the regolith/soil layer.
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.
Cited articles
Acrement, G. J. and Schneider, V. R.: Guide for Selecting Manning's Roughness Coefficients for Natural Channels and Flood Plains, United States Geological Survey Water-Supply Paper, 2339, 1–38, 1984.
An, C., Fu, X., Wang, G., and Parker, G.: Effect of grain sorting on gravel bed river evolution subject to cycled hydrographs: Bed load sheets and breakdown of the hydrograph boundary layer, J. Geophys. Res.-Earth, 122, 1513–1533 https://doi.org/10.1002/2016JF003994, 2017a.
An, C., Cui, Y., Fu, X., and Parker, G.: Gravel-bed river evolution in earthquake-prone regions subject to cycled hydrographs and repeated sediment pulses, Earth Surf. Proc. Land., 42, 2426–2438, https://doi.org/10.1002/esp.4195, 2017b.
Bagnold, R. A.: An Approach to the Sediment Transport Problem from General Physics, Geological Survey Professional Paper 422-I, United States Government Printing Office, Washington, 1966.
Bagnold, R. A.: An empirical correlation of bedload transport rates in flumes and natural rivers, P. Roy. Soc Lond. A Mat., 372, 453–473, https://doi.org/10.1098/rspa.1980.0122, 1980.
Barry, J. I., Buffington, J. M., and King J. G.: A general power equation for predicting bed load transport rates in gravel bed rivers, Water Resour. Res., 40, W10401, https://doi.org/10.1029/2004WR003190, 2004.
Benito, G., Thorndycraft, V. R., Rico, M. T., Sánchez-Moya, Y., Sopeña, A., Botero, B. A., Machado, M. J., Davis, M., and Pérez-González, A.: Hydrological response of a dryland ephemeral river to southern African climatic variability during the last millennium, Quaternary Res., 75, 471–482, https://doi.org/10.1016/j.yqres.2011.01.004, 2011.
Billi, P.: Flash flood sediment transport in a steep sand-bed ephemeral stream, Int. J. Sediment Res., 26, 193–209, https://doi.org/10.1016/S1001-6279(11)60086-3, 2011.
Bunte, K. and Abt, S. R.: Sampling surface and subsurface particle-size distributions in wadable gravel- and cobble-bed streams for analyses in sediment transport, hydraulics, and streambed monitoring, Gen. Tech. Rep. RMRS-GTR-74, Fort Collins, CO, US Department of Agriculture, Forest Service, Rocky Mountain Research Station, 1–428, 2001.
Calle, M., Lotsari, E., Kukko, A., Alho, P., Kaartinen, H., Rodriguez-Lloveras, X., and Benito, G.: Morphodynamics of an ephemeral gravel-bed stream combining mobile laser scanner, hydraulic simulations and geomorphological indicators, Z. Geomorphol. Supp., 59, 33–57, https://doi.org/10.1127/zfg_suppl/2015/S-59196, 2015.
Cao, Z., Hu, P., and Pender, G.: Reconciled bedload sediment transport rates in ephemeral and perennial rivers, Earth Surf. Proc. Land., 35, 1655–1665, https://doi.org/10.1002/esp.2005, 2010.
Casas, A., Lane, S. N., Yu, D., and Benito, G.: A method for parameterising roughness and topographic sub-grid scale effects in hydraulic modelling from LiDAR data, Hydrol. Earth Syst. Sci., 14, 1567–1579, https://doi.org/10.5194/hess-14-1567-2010, 2010a.
Casas, M. A, Lane, S. N., Hardy, R. J., Benito, G., and Whiting, P. J.: Reconstruction of subgrid-scale topographic variability and its effect upon the spatial structure of three-dimensional river flow, Water Resour. Res., 46, W03519, https://doi.org/10.1029/2009WR007756, 2010b.
Chow, V. T.: Open Channel Hydraulics, McGraw-Hill Book Company, New York, USA, 1959.
Croke, J., Fryirs, K., and Thompson, C.: Channel–floodplain connectivity during an extreme flood event: implications for sediment erosion, deposition, and delivery, Earth Surf. Proc. Land., 38, 1444–1456, https://doi.org/10.1002/esp.3430, 2013
Deltares: Delft3D-FLOW, Simulation of Multi-dimensional Hydrodynamic Flows and Transport Phenomena, Including Sediments, User Manual: Hydro-Morphodynamics, Delft, the Netherlands, 2011.
Dietrich, W. E. and Smith, J. D.: Influence of the point bar on flow through curved channels, Water Resour. Res., 19, 1173–1192, 1983.
Engelund, F. and Hansen, E.: A Monograph on Sediment Transport in Alluvial Streams, Technical University of Denmark, Teknisk Forlag, Copenhagen, 1967.
Euler, T., Herget, J., Schlömer, O., and Benito, G.: Hydromorphological processes at submerged solitary boulder obstacles in streams, Catena, 157, 250–267, https://doi.org/10.1016/j.catena.2017.05.028, 2017.
Ferguson, R. I.: Understanding braiding processes in gravel-bed rivers: progress and unsolved problems, in: Braided Rivers, Geological Society Special Publication No. 75, edited by: Best, J. L. and Bristow, CS, 73–87, 1993.
Gendaszek, A. S., Magirl, C. S., Czuba, C. R., and Konrad, C. P.: The timing of scour and fill in a gravel-bedded river measured with buried accelerometers, J. Hydrol., 495, 186–196, https://doi.org/10.1016/j.jhydrol.2013.05.012, 2013.
Graf, W. L.: Transport and deposition of plutonium-contaminated sediments by fluvial processes, Los Alamos Canyon, New Mexico, Geol. Soc. Am. Bull., 108, 1342–1355, https://doi.org/10.1130/0016-7606(1996)108<1342:TADOPC>2.3.CO;2, 1996.
Greenbaum, N. and Bergman, N.: Formation and evacuation of a large gravel-bar deposited during a major flood in a Mediterranean ephemeral stream, Nahal Me'arot, NW Israel, Geomorphology, 77, 169–186, https://doi.org/10.1016/j.geomorph.2006.01.016, 2006.
Grodek, T., Jacoby, Y., Morin, E., and Katz, O.: Effectiveness of exceptional rainstorms on a small Mediterranean basin, Geomorphology, 159/160, 156–168, https://doi.org/10.1016/j.geomorph.2012.03.016, 2012
Hassan, M. A., Marren, P. M., and Schwartz, U.: Bar structure in an arid ephemeral stream, Sediment. Geol., 221, 57–70, https://doi.org/10.1016/j.sedgeo.2009.07.012, 2009.
Hauer, C. and Habersack, H.: Morphodynamics of a 1000-year flood in the Kamp River, Austria, and impacts on floodplain morphology, Earth Surf. Proc. Land., 34, 654–682, https://doi.org/10.1002/esp.1763, 2009.
Hjulström, F.: Studies of the Morphological Activity of Rivers as Illustrated by the River Fyris – Inaugural Dissertation, Almqvist & Wiksells, 1935.
Hooke, J.: Morphological impacts of flow events of varying magnitude on ephemeral channels in a semiarid region, Geomorphology, 252, 128–143, https://doi.org/10.1016/j.geomorph.2015.07.014, 2016a.
Hooke, J.: Geomorphological impacts of an extreme flood in SE Spain, Geomorphology, 263, 19–38, https://doi.org/10.1016/j.geomorph.2016.03.021, 2016b.
Hooke, J. M. and Mant, J. M.: Geomorphological impacts of a flood event on ephemeral channels in SE Spain, Geomorphology, 34, 163–180, https://doi.org/10.1016/S0169-555X(00)00005-2, 2000.
Hooke, J. M., Brookes, C. J., Duane, W., and Mant, J. M.: A simulation model of morphological, vegetation and sediment changes in ephemeral streams, Earth Surf. Proc. Land., 30, 845–866, https://doi.org/10.1002/esp.1195, 2005.
Ikeda, S.: Incipient Motion of Sand Particles on Side Slopes, J. Hydr. Eng. Div.-ASCE, 108, 95–114, 1982.
Kaitna, R., Chiari, M., Kerschbaumer, M., Kapeller, H., Zlatic-Jugovic, J., Hengl, M., and Huebl, J.: Physical and numerical modelling of a bedload deposition area for an Alpine torrent, Nat. Hazard. Earth Sys., 11, 1589–1597, https://doi.org/10.5194/nhess-11-1589-2011, 2011.
Kasvi, E., Alho, P., Lotsari, E., Wang, Y., Kukko, A., Hyyppä, H., and Hyyppä, J.: Two-dimensional and three-dimensional computational models in hydrodynamic and morphodynamic reconstructions of a river bend: sensitivity and functionality, Hydrol. Process., 29, 1604–1629, https://doi.org/10.1002/hyp.10277, 2014.
Kasvi, E., Vaaja, M., Kaartinen, H., Kukko, A., Jaakkola, A., Flener, C., Hyyppä, H., Hyyppä, J., and Alho, P.: Sub-bend scale flow–sediment interaction of meander bends – A combined approach of field observations, close-range remote sensing and computational modelling, Geomorphology, 238, 119–134, https://doi.org/10.1016/j.geomorph.2015.01.039, 2015.
Kukko, A., Kaartinen, H., and Zanetti, M.: Backpack Personal Laser Scanning System for Grain-Scale Topographic Mapping, 46th Lunar and Planetary Science Conference, The Woodlands, TX, USA, 2015.
Li, Z., Cao, Z., Liu, H., and Pender, G.: Graded and uniform bed load sediment transport in a degrading channel, Int. J. Sediment Res., 31, 376–385, https://doi.org/10.1016/j.ijsrc.2016.01.004, 2016.
Limerinos, J. T.: Determination of the Manning coefficient from measured bed roughness in natural channels, Geological survey water-supply paper, 1898-B, US Department of the Interior, prepared in cooperation with the California Department of Water Resources, United States Government Printing Office, Washington, 1970.
Lisle, T. E. and Madej, M. A.: Spatial variation in armouring in a channel with high sediment supply, in: Dynamics of Gravel-bed Rivers, edited by: Billi, P., Hey, R. D., Thorne, C. R., and Tacconi, P., John Wiley & Sons Ltd., Chichester, 277–293, 1992.
Long, A. J.: Hydrograph separation for karst watersheds using a two-domain rainfall–discharge model, J. Hydrol., 364, 249–256, https://doi.org/10.1016/j.jhydrol.2008.11.001, 2009
Lotsari, E., Wainwright, D., Corner, G. D., Alho, P., and Käyhkö, J.: Surveyed and modelled one-year morphodynamics in the braided lower Tana River, Hydrol. Process., 28, 2685–2716, https://doi.org/10.1002/hyp.9750, 2014a.
Lotsari, E., Vaaja, M., Flener, C., Kaartinen, H., Kukko, A., Kasvi, E., Hyyppä, H., Hyyppä, J., and Alho, P.: Annual bank and point bar morphodynamics of a meandering river determined by high-accuracy multitemporal laser scanning and flow data, Water Resour. Res., 50, 5532–5559, https://doi.org/10.1002/2013WR014106, 2014b.
Lotsari, E., Thorndycraft, V., and Alho, P.: Prospects and challenges of simulating river channel response to future climate change, Prog. Phys. Geogr., 39, 483–513, https://doi.org/10.1177/0309133315578944, 2015.
Lloyd, C. E. M., Freer, J. E., Johnes, P. J., and Collins, A. L.: Using hysteresis analysis of high-resolution water quality monitoring data, including uncertainty, to infer controls on nutrient and sediment transfer in catchments, Sci. Total Environ., 543, 388–404, https://doi.org/10.1016/j.scitotenv.2015.11.028, 2016
Lucía, A., Recking, A., Martín-Duque, J. F., Storz-Peretz, Y., and Laronne, J. B.: Continuous monitoring of bedload discharge in a small, steep sandy channel, J. Hydrol., 497, 37–50, https://doi.org/10.1016/j.jhydrol.2013.05.034, 2013.
Meyer-Peter, E. and Müller, R.: Formula for bed load transport, Proceedings of the 2nd Meeting, Int. Assoc. Hydraulic Structures Res. (IAHR), Stockholm, Sweden, 39–64, 1948.
Milan, D. J., Heritage, G. L., and Hetherington, D.: Application of a 3D laser scanner in the assessment of erosion and deposition volumes and channel change in a proglacial river, Earth Surf. Proc. Land., 32, 1657–1674, https://doi.org/10.1002/esp.1592, 2007.
Müller, E. R. and Pitlick, J.: Sediment supply and channel morphology in mountain river systems: 1. Relative importance of lithology, topography, and climate, J. Geophys. Res.-Earth, 118, 2325–2342, https://doi.org/10.1002/2013JF002843, 2013.
Nardi, L. and Rinaldi, M.: Spatio-temporal patterns of channel changes in response to a major flood event: the case of the Magra River (central–northern Italy), Earth Surf. Proc. Land., 40, 326–339, https://doi.org/10.1002/esp.3636, 2015.
Parker, G.: Surface-based bedload transport relation for gravel rivers, J. Hydraul. Res., 28, 417–436, https://doi.org/10.1080/00221689009499058, 1990.
Pelletier, J. D., Mayer, L., Pearthree, P. A., House, P. K., Demsey, K. A., Klawon, J. E., and Vincent, K. R.: An integrated approach to flood hazard assessment on alluvial fans using numerical modeling, field mapping, and remote sensing, Geol. Soc. Am. Bull., 117, 1167–1180, https://doi.org/10.1130/B25544.1, 2005.
Petersen, M. S.: Impacts of Flash Floods, in: Coping With Flash Floods, edited by: Gruntfest, E. and Handmer, J., NATO Science Series (Series 2. Environmental Security), vol. 77, Springer, Dordrecht, 2001.
Pitlick, J.: Response and recovery of a subalpine stream following a catastrophic flood, Geol. Soc. Am. Bull., 105, 657–670, 1993.
Reid, I., Frostick, L. E., and Layman, J. T.: The incidence and nature of bedload transport during flood flows in coarse-grained alluvial channels, Earth Surf. Proc. Land., 10, 33–44, https://doi.org/10.1002/esp.3290100107, 1985.
Reid, I., Powell, D. M., and Laronne, J. B.: Prediction of bed-load transport by desert flash floods, J. Hydraul. Eng., 122, 170–173, https://doi.org/10.1061/(ASCE)0733-9429(1996)122:3(170), 1996.
Rodriguez-Lloveras, X., Bussi, G., Francés, F., Rodriguez-Caballero, E., Solé-Benet, A., Calle, M., and Benito, G.: Patterns of runoff and sediment production in response to land-use changes in an ungauged Mediterranean catchment, J. Hydrol., 531, 1054–1066, https://doi.org/10.1016/j.jhydrol.2015.11.014, 2015.
Sanyal, J.: Predicting possible effects of dams on downstream river bed changes of a Himalayan river with morphodynamic modelling, Quatern. Int., 453, 48–62, https://doi.org/10.1016/j.quaint.2017.03.063, 2017.
Schuurman, F., Marra, W. A., and Kleinhans, M. G.: Physics-based modeling of large braided sand-bed rivers: bar pattern formation, dynamics and sensitivity, J. Geophys. Res.-Earth, 118, 2509–2527, https://doi.org/10.1002/2013jf002896, 2013.
Segura-Beltrán, F. and Sanchis-Ibor, C.: Assessment of channel changes in a Mediterranean ephemeral stream since the early twentieth century, The Rambla de Cervera, eastern Spain, Geomorphology, 201, 199–214, https://doi.org/10.1016/j.geomorph.2013.06.021, 2013.
Singh, U., Crosato, A., Giri, S., and Hicks, M.: Sediment heterogeneity and mobility in the morphodynamic modelling of gravel-bed braided rivers, Adv. Water Resour., 104, 127–144, https://doi.org/10.1016/j.advwatres.2017.02.005, 2017.
Thompson, C. and Croke, J.: Geomorphic effects, flood power, and channel competence of a catastrophic flood in confined and unconfined reaches of the upper Lockyer valley, southeast Queensland, Australia, Geomorphology, 197, 156–169, https://doi.org/10.1016/j.geomorph.2013.05.006, 2013.
Tooth, S.: Process, form and change in dryland rivers: a review of recent research, Earth-Sci. Rev., 51, 67–107, https://doi.org/10.1016/S0012-8252(00)00014-3, 2000.
Vaaja, M., Hyyppä, J., Kukko, A., Kaartinen, H., Hyyppä, H., and Alho, P.: Mapping Topography Changes and Elevation Accuracies Using a Mobile Laser Scanner, Remote Sens., 3, 587–600, https://doi.org/10.3390/rs3030587, 2011.
van Rijn, L. C.: Principles of Sediment Transport in Rivers, Estuaries and Coastal Seas, 1993 Edn., Aqua Publications, the Netherlands, 1993.
Verhaar, P. M., Biron, P. M., Ferguson, R. I., and Hoey, T. B.: A modified morphodynamic model for investigating the response of rivers to short-term climate change, Geomorphology, 101, 674–682, https://doi.org/10.1016/j.geomorph.2008.03.010, 2008.
Viparelli, E., Gaeuman, D., Wilcock, P., and Parker, G.: A model to predict the evolution of a gravel bed river under an imposed cyclic hydrograph and its application to the Trinity River, Water Resour. Res., 47, W02533, https://doi.org/10.1029/2010WR009164, 2011.
Walling, D. E.: Suspended sediment and solute yields from a small catchment prior to urbanisation, in: Fluvial Processes in Instrumented Watersheds, edited by: Gregory, K. J. and Walling, D. E., Special Publication 6, Institute of British Geographers, 169–192, 1974.
Wang, Y., Liang, X., Flener, C., Kukko, A., Kaartinen, H., Kurkela, M., Vaaja, M., Hyyppä, H., and Alho, P.: 3D Modeling of Coarse Fluvial Sediments Based on Mobile Laser Scanning Data, Remote Sens., 5, 4571–4592, https://doi.org/10.3390/rs5094571, 2013.
Wheaton, J., Brasington, J., Darby, S. E., Kasprak, A., Sear, D., and Vericat, D.: Morphodynamic signatures of braiding mechanisms as expressed through change in sediment storage in a gravel-bed river, J. Geophys. Res.-Earth, 118, 759–779, https://doi.org/10.1002/jgrf.20060, 2013.
Williams, R. D., Brasington, J., Hicks, M., Measures, R., Rennie, C. D., and Vericat, D.: Hydraulic validation of two-dimensional simulations of braided river flow with spatially continuous ADCP data, Water Resour. Res., 49, 5183–5205, https://doi.org/10.1002/wrcr.20391, 2013.
Williams, R. D., Rennie, C. D., Brasington, J., Hicks, D. M., and Vericat, D.: Linking the spatial distribution of bed load transport to morphological change during high-flow events in a shallow braided river, J. Geophys. Res.-Earth, 120, 604–622, https://doi.org/10.1002/2014JF003346, 2015.
Williams, R. D., Brasington, J., and Hicks D. M.: Numerical Modelling of Braided River Morphodynamics: Review and Future Challenges, Geography Compass, 10, 102–127, https://doi.org/10.1111/gec3.12260, 2016a.
Williams, R. D., Measures, R., Hicks, D. M., and Brasington J.: Assessment of a numerical model to reproduce event-scale erosion and deposition distributions in a braided river, Water Resour. Res., 52, 6621–6642, https://doi.org/10.1002/2015WR018491, 2016b.
Wolman, M. G.: A method of sampling coarse river-bed material, Transactions of the American Geophysical Union, 35, 951–956, 1954.
Short summary
This paper analyses the timing of topographical changes of a gravel bed ephemeral river channel during consecutive and moderate- and low-magnitude floods by applying a morphodynamic model calibrated with pre- and post-event surveys using RTK-GPS and mobile laser scanning. The channel acted as a braided river during lower flows but as a meandering river during higher flows. The channel changes can be greater during the long-lasting receding phase than during the rising phase of the floods.
This paper analyses the timing of topographical changes of a gravel bed ephemeral river channel...
