Articles | Volume 8, issue 2
https://doi.org/10.5194/esurf-8-555-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/esurf-8-555-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Quantifying sediment mass redistribution from joint time-lapse gravimetry and photogrammetry surveys
Department of Space, Earth and Environment, Chalmers University of Technology, Onsala Space Observatory, 439 92 Onsala, Sweden
Philippe Steer
Géosciences Rennes, UMR 6118, CNRS, Université Rennes, Rennes, 35000, France
Kuo-Jen Chang
Department of Civil Engineering, National Taipei University of Technology, Taipei, 10608, Taiwan
Nicolas Le Moigne
Géosciences Montpellier, UMR CNRS/UM2 5243, Université Montpellier 2, CNRS, Montpellier, France
Cheinway Hwang
Department of Civil Engineering, National Chiao Tung University, Hsinchu, 30010, Taiwan
Wen-Chi Hsieh
Industrial Technology Research Institute, Hsinchu, 31040, Taiwan
Louise Jeandet
Géosciences Rennes, UMR 6118, CNRS, Université Rennes, Rennes, 35000, France
Laurent Longuevergne
Géosciences Rennes, UMR 6118, CNRS, Université Rennes, Rennes, 35000, France
Ching-Chung Cheng
Department of Civil Engineering, National Chiao Tung University, Hsinchu, 30010, Taiwan
Jean-Paul Boy
Institut de Physique du Globe de Strasbourg, CNRS – Université de Strasbourg UMR 7516 – Ecole et Observatoire des Sciences de la Terre, Strasbourg, 67084 CEDEX, France
Frédéric Masson
Institut de Physique du Globe de Strasbourg, CNRS – Université de Strasbourg UMR 7516 – Ecole et Observatoire des Sciences de la Terre, Strasbourg, 67084 CEDEX, France
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Lucas Pelascini, Philippe Steer, Maxime Mouyen, and Laurent Longuevergne
Nat. Hazards Earth Syst. Sci., 22, 3125–3141, https://doi.org/10.5194/nhess-22-3125-2022, https://doi.org/10.5194/nhess-22-3125-2022, 2022
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Landslides represent a major natural hazard and are often triggered by typhoons. We present a new 2D model computing the respective role of rainfall infiltration, atmospheric depression and groundwater in slope stability during typhoons. The results show rainfall is the strongest factor of destabilisation. However, if the slope is fully saturated, near the toe of the slope or during the wet season, rainfall infiltration is limited and atmospheric pressure change can become the dominant factor.
Maxime Mouyen, Romain Plateaux, Alexander Kunz, Philippe Steer, and Laurent Longuevergne
Geosci. Model Dev. Discuss., https://doi.org/10.5194/gmd-2021-233, https://doi.org/10.5194/gmd-2021-233, 2021
Preprint withdrawn
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LAPS is an easy to use Matlab code that allows simulating the transport of particles in the ocean without any programming requirement. The simulation is based on publicly available ocean current velocity fields and allows to output particles spatial distribution and trajectories at time intervals defined by the user. After explaining how LAPS is working, we show a few examples of applications for studying sediment transport or plastic littering. The code is available on Github.
Ronan Abhervé, Clément Roques, Alexandre Gauvain, Laurent Longuevergne, Stéphane Louaisil, Luc Aquilina, and Jean-Raynald de Dreuzy
Hydrol. Earth Syst. Sci., 27, 3221–3239, https://doi.org/10.5194/hess-27-3221-2023, https://doi.org/10.5194/hess-27-3221-2023, 2023
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We propose a model calibration method constraining groundwater seepage in the hydrographic network. The method assesses the hydraulic properties of aquifers in regions where perennial streams are directly fed by groundwater. The estimated hydraulic conductivity appear to be highly sensitive to the spatial extent and density of streams. Such an approach improving subsurface characterization from surface information is particularly interesting for ungauged basins.
Philippe Steer, Laure Guerit, Dimitri Lague, Alain Crave, and Aurélie Gourdon
Earth Surf. Dynam., 10, 1211–1232, https://doi.org/10.5194/esurf-10-1211-2022, https://doi.org/10.5194/esurf-10-1211-2022, 2022
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The morphology and size of sediments influence erosion efficiency, sediment transport and the quality of aquatic ecosystem. In turn, the spatial evolution of sediment size provides information on the past dynamics of erosion and sediment transport. We have developed a new software which semi-automatically identifies and measures sediments based on 3D point clouds. This software is fast and efficient, offering a new avenue to measure the geometrical properties of large numbers of sediment grains.
Luca Guillaumot, Laurent Longuevergne, Jean Marçais, Nicolas Lavenant, and Olivier Bour
Hydrol. Earth Syst. Sci., 26, 5697–5720, https://doi.org/10.5194/hess-26-5697-2022, https://doi.org/10.5194/hess-26-5697-2022, 2022
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Recharge, defining the renewal rate of groundwater resources, is difficult to estimate at basin scale. Here, recharge variations are inferred from water table variations recorded in boreholes. First, results show that aquifer-scale properties controlling these variations can be inferred from boreholes. Second, groundwater is recharged by both intense and seasonal rainfall. Third, the short-term contribution appears overestimated in recharge models and depends on the unsaturated zone thickness.
Lucas Pelascini, Philippe Steer, Maxime Mouyen, and Laurent Longuevergne
Nat. Hazards Earth Syst. Sci., 22, 3125–3141, https://doi.org/10.5194/nhess-22-3125-2022, https://doi.org/10.5194/nhess-22-3125-2022, 2022
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Landslides represent a major natural hazard and are often triggered by typhoons. We present a new 2D model computing the respective role of rainfall infiltration, atmospheric depression and groundwater in slope stability during typhoons. The results show rainfall is the strongest factor of destabilisation. However, if the slope is fully saturated, near the toe of the slope or during the wet season, rainfall infiltration is limited and atmospheric pressure change can become the dominant factor.
Clément Roques, David E. Rupp, Jean-Raynald de Dreuzy, Laurent Longuevergne, Elizabeth R. Jachens, Gordon Grant, Luc Aquilina, and John S. Selker
Hydrol. Earth Syst. Sci., 26, 4391–4405, https://doi.org/10.5194/hess-26-4391-2022, https://doi.org/10.5194/hess-26-4391-2022, 2022
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Streamflow dynamics are directly dependent on contributions from groundwater, with hillslope heterogeneity being a major driver in controlling both spatial and temporal variabilities in recession discharge behaviors. By analysing new model results, this paper identifies the major structural features of aquifers driving streamflow dynamics. It provides important guidance to inform catchment-to-regional-scale models, with key geological knowledge influencing groundwater–surface water interactions.
Nataline Simon, Olivier Bour, Mikaël Faucheux, Nicolas Lavenant, Hugo Le Lay, Ophélie Fovet, Zahra Thomas, and Laurent Longuevergne
Hydrol. Earth Syst. Sci., 26, 1459–1479, https://doi.org/10.5194/hess-26-1459-2022, https://doi.org/10.5194/hess-26-1459-2022, 2022
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Groundwater discharge into streams plays a major role in the preservation of stream ecosystems. There were two complementary methods, both based on the use of the distributed temperature sensing technology, applied in a headwater catchment. Measurements allowed us to characterize the spatial and temporal patterns of groundwater discharge and quantify groundwater inflows into the stream, opening very promising perspectives for a novel characterization of the groundwater–stream interface.
Maxime Mouyen, Romain Plateaux, Alexander Kunz, Philippe Steer, and Laurent Longuevergne
Geosci. Model Dev. Discuss., https://doi.org/10.5194/gmd-2021-233, https://doi.org/10.5194/gmd-2021-233, 2021
Preprint withdrawn
Short summary
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LAPS is an easy to use Matlab code that allows simulating the transport of particles in the ocean without any programming requirement. The simulation is based on publicly available ocean current velocity fields and allows to output particles spatial distribution and trajectories at time intervals defined by the user. After explaining how LAPS is working, we show a few examples of applications for studying sediment transport or plastic littering. The code is available on Github.
Philippe Steer
Earth Surf. Dynam., 9, 1239–1250, https://doi.org/10.5194/esurf-9-1239-2021, https://doi.org/10.5194/esurf-9-1239-2021, 2021
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How landscapes respond to tectonic and climatic changes is a major issue in Earth sciences. I have developed a new model that solves for landscape evolution in two dimensions using analytical solutions. Compared to numerical models, this new model is quicker and more accurate. It can compute in a single time step the topography at equilibrium of a landscape or be used to describe its evolution through time, e.g. during changes in tectonic or climatic conditions.
Thomas G. Bernard, Dimitri Lague, and Philippe Steer
Earth Surf. Dynam., 9, 1013–1044, https://doi.org/10.5194/esurf-9-1013-2021, https://doi.org/10.5194/esurf-9-1013-2021, 2021
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Both landslide mapping and volume estimation accuracies are crucial to quantify landscape evolution and manage such a natural hazard. We developed a method to robustly detect landslides and measure their volume from repeat 3D point cloud lidar data. This method detects more landslides than classical 2D inventories and resolves known issues of indirect volume measurement. Our results also suggest that the number of small landslides classically detected from 2D imagery is underestimated.
Thomas Croissant, Robert G. Hilton, Gen K. Li, Jamie Howarth, Jin Wang, Erin L. Harvey, Philippe Steer, and Alexander L. Densmore
Earth Surf. Dynam., 9, 823–844, https://doi.org/10.5194/esurf-9-823-2021, https://doi.org/10.5194/esurf-9-823-2021, 2021
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In mountain ranges, earthquake-derived landslides mobilize large amounts of organic carbon (OC) by eroding soil from hillslopes. We propose a model to explore the role of different parameters in the post-seismic redistribution of soil OC controlled by fluvial export and heterotrophic respiration. Applied to the Southern Alps, our results suggest that efficient OC fluvial export during the first decade after an earthquake promotes carbon sequestration.
Simon Deggim, Annette Eicker, Lennart Schawohl, Helena Gerdener, Kerstin Schulze, Olga Engels, Jürgen Kusche, Anita T. Saraswati, Tonie van Dam, Laura Ellenbeck, Denise Dettmering, Christian Schwatke, Stefan Mayr, Igor Klein, and Laurent Longuevergne
Earth Syst. Sci. Data, 13, 2227–2244, https://doi.org/10.5194/essd-13-2227-2021, https://doi.org/10.5194/essd-13-2227-2021, 2021
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GRACE provides us with global changes of terrestrial water storage. However, the data have a low spatial resolution, and localized storage changes in lakes/reservoirs or mass change due to earthquakes causes leakage effects. The correction product RECOG RL01 presented in this paper accounts for these effects. Its application allows for improving calibration/assimilation of GRACE into hydrological models and better drought detection in earthquake-affected areas.
Maxime Bernard, Philippe Steer, Kerry Gallagher, and David Lundbek Egholm
Earth Surf. Dynam., 8, 931–953, https://doi.org/10.5194/esurf-8-931-2020, https://doi.org/10.5194/esurf-8-931-2020, 2020
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Detrital thermochronometric age distributions of frontal moraines have the potential to retrieve ice erosion patterns. However, modelling erosion and sediment transport by the Tiedemann Glacier ice shows that ice velocity, the source of sediment, and ice flow patterns affect age distribution shape by delaying sediment transfer. Local sampling of frontal moraine can represent only a limited part of the catchment area and thus lead to a biased estimation of the spatial distribution of erosion.
Benjamin Campforts, Charles M. Shobe, Philippe Steer, Matthias Vanmaercke, Dimitri Lague, and Jean Braun
Geosci. Model Dev., 13, 3863–3886, https://doi.org/10.5194/gmd-13-3863-2020, https://doi.org/10.5194/gmd-13-3863-2020, 2020
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Landslides shape the Earth’s surface and are a dominant source of terrestrial sediment. Rivers, then, act as conveyor belts evacuating landslide-produced sediment. Understanding the interaction among rivers and landslides is important to predict the Earth’s surface response to past and future environmental changes and for mitigating natural hazards. We develop HyLands, a new numerical model that provides a toolbox to explore how landslides and rivers interact over several timescales.
C. C. Carabajal and J.-P. Boy
Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XLIII-B3-2020, 1299–1306, https://doi.org/10.5194/isprs-archives-XLIII-B3-2020-1299-2020, https://doi.org/10.5194/isprs-archives-XLIII-B3-2020-1299-2020, 2020
Wei-Chia Hung, Yi-An Chen, and Cheinway Hwang
Proc. IAHS, 382, 103–109, https://doi.org/10.5194/piahs-382-103-2020, https://doi.org/10.5194/piahs-382-103-2020, 2020
Jean-Pierre Vergnes, Nicolas Roux, Florence Habets, Philippe Ackerer, Nadia Amraoui, François Besson, Yvan Caballero, Quentin Courtois, Jean-Raynald de Dreuzy, Pierre Etchevers, Nicolas Gallois, Delphine J. Leroux, Laurent Longuevergne, Patrick Le Moigne, Thierry Morel, Simon Munier, Fabienne Regimbeau, Dominique Thiéry, and Pascal Viennot
Hydrol. Earth Syst. Sci., 24, 633–654, https://doi.org/10.5194/hess-24-633-2020, https://doi.org/10.5194/hess-24-633-2020, 2020
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The AquiFR hydrogeological modelling platform aims to provide
short-term-to-seasonal hydrological forecasts over France for daily water management and long-term simulations for climate impact studies. The results described in this study confirm the feasibility of gathering independent groundwater models into the same numerical tool. This new tool encourages the development of groundwater modelling, and it has the potential to be valuable for many operational and research applications.
Philippe Steer, Thomas Croissant, Edwin Baynes, and Dimitri Lague
Earth Surf. Dynam., 7, 681–706, https://doi.org/10.5194/esurf-7-681-2019, https://doi.org/10.5194/esurf-7-681-2019, 2019
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We use a statistical earthquake generator to investigate the influence of fault activity on river profile development and on the formation of co-seismic knickpoints. We find that the magnitude distribution of knickpoints resulting from a purely seismic fault is homogeneous. Shallow aseismic slip favours knickpoints generated by large-magnitude earthquakes nucleating at depth. Accounting for fault burial by alluvial cover can modulate the topographic expression of earthquakes and fault activity.
Cédric Champollion, Sabrina Deville, Jean Chéry, Erik Doerflinger, Nicolas Le Moigne, Roger Bayer, Philippe Vernant, and Naomi Mazzilli
Hydrol. Earth Syst. Sci., 22, 3825–3839, https://doi.org/10.5194/hess-22-3825-2018, https://doi.org/10.5194/hess-22-3825-2018, 2018
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Gravity monitoring at the surface and in situ (in caves) has been conducted in a karst hydro-system in the south of France (Larzac plateau). Subsurface water storage is evidenced with a spatial variability probably associated with lithology differences and confirmed by MRS measurements. Gravity allows transient water storage to be estimated on the seasonal scale.
Mohammad Shamsudduha, Richard G. Taylor, Darren Jones, Laurent Longuevergne, Michael Owor, and Callist Tindimugaya
Hydrol. Earth Syst. Sci., 21, 4533–4549, https://doi.org/10.5194/hess-21-4533-2017, https://doi.org/10.5194/hess-21-4533-2017, 2017
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This study tests the phase and amplitude of GRACE TWS signals in the Upper Nile Basin from five commonly used gridded products (NASA's GRCTellus: CSR, JPL, GFZ; JPL-Mascons; GRGS) using in situ data and soil moisture from the Global Land Data Assimilation System. Resolution of changes in groundwater storage (ΔGWS) from GRACE is greatly constrained by the uncertain simulated soil moisture storage and the low amplitude in ΔGWS observed in deeply weathered crystalline rocks in the Upper Nile Basin.
W.-C. Hung, C. Wang, C. Hwang, Y.-A. Chen, H.-C. Chiu, and S.-H. Lin
Proc. IAHS, 372, 385–391, https://doi.org/10.5194/piahs-372-385-2015, https://doi.org/10.5194/piahs-372-385-2015, 2015
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During 1992-2013, pumping of groundwater caused large-scale aquifer-system compaction and land subsidence in the Choshui River Alluvial Fan (CRAF) in Taiwan. The subsidence has already endangered the operation of Taiwan High Speed Rail (THSR). In this paper, we introduce the multiple sensors monitoring system to study the extent of subsidence in CRAF and its mechanism, including GPS (Global Positioning System), PSI (Persistent Scatterer Interferometry), leveling and multi-layer compaction monito
H. Brenot, A. Walpersdorf, M. Reverdy, J. van Baelen, V. Ducrocq, C. Champollion, F. Masson, E. Doerflinger, P. Collard, and P. Giroux
Atmos. Meas. Tech., 7, 553–578, https://doi.org/10.5194/amt-7-553-2014, https://doi.org/10.5194/amt-7-553-2014, 2014
L. Longuevergne, C. R. Wilson, B. R. Scanlon, and J. F. Crétaux
Hydrol. Earth Syst. Sci., 17, 4817–4830, https://doi.org/10.5194/hess-17-4817-2013, https://doi.org/10.5194/hess-17-4817-2013, 2013
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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
Aksoy, H. and Kavvas, M. L.:
A review of hillslope and watershed scale erosion and sediment transport models,
Catena,
64, 247–271, 2005.
Boedecker, G.:
IAGBN: Absolute Observations Data Processing Standards,
BGI-Bull. d'Information, 63, 51–57, 1988.
Bos, M. S. and Scherneck, H.-G.:
Ocean tide loading provider,
available at: http://holt.oso.chalmers.se/loading/ (last access: 18 June 2020), 2003.
Boy, J.-P.:
EOST Loading Service,
available at: http://loading.u-strasbg.fr/ (last access: 18 June 2020), 2015.
Camacho, A. G., Fernández, J., and Gottsmann, J.:
The 3-D gravity inversion package GROWTH2.0 and its application to Tenerife Island, Spain,
Comput. Geosci.,
37, 621–633, https://doi.org/10.1016/j.cageo.2010.12.003, 2011.
Carbone, D. and Greco, F.:
Review of Microgravity Observations at Mt. Etna: A Powerful Tool to Monitor and Study Active Volcanoes,
Pure Appl. Geophys.,
164, 769–790, https://doi.org/10.1007/s00024-007-0194-7, 2007.
Chang, K.-J., Chan, Y.-C., Chen, R.-F., and Hsieh, Y.-C.: Geomorphological evolution of landslides near an active normal fault in northern Taiwan, as revealed by lidar and unmanned aircraft system data, Nat. Hazards Earth Syst. Sci., 18, 709–727, https://doi.org/10.5194/nhess-18-709-2018, 2018.
Chen, C. S. and Chen, Y. L.:
The rainfall characteristics of Taiwan,
Mon. Weather Rev.,
131, 1323–1341, 2003.
Chiang, S. H. and Chang, K. T.:
The potential impact of climate change on typhoon-triggered landslides in Taiwan, 2010–2099,
Geomorphology,
133, 143–151, https://doi.org/10.1016/j.geomorph.2010.12.028, 2011.
Ching, K.-E. E., Hsieh, M.-L. L., Johnson, K. M., Chen, K.-H. H., Rau, R.-J. J., and Yang, M.:
Modern vertical deformation rates and mountain building in Taiwan from precise leveling and continuous GPS observations, 2000–2008,
J. Geophys. Res.,
116, B08406, https://doi.org/10.1029/2011JB008242, 2011.
Cook, K. L., Turowski, J. M., and Hovius, N.:
A demonstration of the importance of bedload transport for fluvial bedrock erosion and knickpoint propagation, Earth Surf. Processes,
38, 683–695, https://doi.org/10.1002/esp.3313, 2013.
Croissant, T., Lague, D., Steer, P., and Davy, P.:
Rapid post-seismic landslide evacuation boosted by dynamic river width,
Nat. Geosci.,
10, 680, https://doi.org/10.1038/ngeo3005, 2017.
Crossley, D., Hinderer, J., and Riccardi, U.:
The measurement of surface gravity.,
Rep. Prog. Phys.,
76, 46101, https://doi.org/10.1088/0034-4885/76/4/046101, 2013.
Dadson, S., Hovius, N., Pegg, S., Dade, W. B., Horng, M. J., and Chen, H.:
Hyperpycnal river flows from an active mountain belt,
J. Geophys. Res.-Earth,
110, F04016, https://doi.org/10.1029/2004JF000244, 2005.
Dadson, S. J., Hovius, N., Chen, H., Dade, W. B., Hsieh, M. L., Willett, S. D., Hu, J. C., Horng, M.-J. J., Chen, M.-C. C., Stark, C. P., Lague, D., and Lin, J.-C.:
Links between erosion, runoff variability and seismicity in the Taiwan orogen,
Nature,
426, 648–651, https://doi.org/10.1038/nature02150, 2003.
Darby, S. E., Hackney, C. R., Leyland, J., Kummu, M., Lauri, H., Parsons, D. R., Best, J. L., Nicholas, A. P., and Aalto, R.:
Fluvial sediment supply to a mega-delta reduced by shifting tropical-cyclone activity,
Nature,
539, 276–279, https://doi.org/10.1038/nature19809, 2016.
Deffontaines, B., Chang, K.-J., Champenois, J., Fruneau, B., Pathier, E., Hu, J.-C., Lu, S.-T., and Liu, Y.-C.:
Active interseismic shallow deformation of the Pingting terraces (Longitudinal Valley – Eastern Taiwan) from UAV high-resolution topographic data combined with InSAR time series,
Geomat. Nat. Haz. Risk,
8, 120–136, https://doi.org/10.1080/19475705.2016.1181678, 2017.
Deffontaines, B., Chang, K.-J., Champenois, J., Lin, K.-C., Lee, C.-T., Chen, R.-F., Hu, J.-C., and Magalhaes, S.: Active tectonics of the onshore Hengchun Fault using UAS DSM combined with ALOS PS-InSAR time series (Southern Taiwan), Nat. Hazards Earth Syst. Sci., 18, 829–845, https://doi.org/10.5194/nhess-18-829-2018, 2018.
Dehant, V., Defraigne, P., and Wahr, J. M.:
Tides for a convective Earth,
J. Geophys. Res.,
104, 1035–1058, 1999.
DeLisle, C. and Yanites, B. J.:
The impacts of landslides triggered by the 2009 Typhoon Morakot on landscape evolution: A mass balance approach,
Am. Geophys. Union, Fall Meet., 10–14 December 2018, Washington, D.C., USA, Abstr. #EP21C-2257,
available at: http://adsabs.harvard.edu/abs/2018AGUFMEP21C2257D (last access: 18 June 2020), 2018.
Eltner, A., Kaiser, A., Castillo, C., Rock, G., Neugirg, F., and Abellán, A.:
Image-based surface reconstruction in geomorphometry – merits, limits and developments,
Earth Surf. Dynam.,
4, 359–389, https://doi.org/10.5194/esurf-4-359-2016, 2016.
Farinotti, D., Longuevergne, L., Moholdt, G., Duethmann, D., Mölg, T., Bolch, T., Vorogushyn, S., and Güntner, A.:
Substantial glacier mass loss in the Tien Shan over the past 50 years,
Nat. Geosci.,
8, 716–722, https://doi.org/10.1038/ngeo2513, 2015.
Ferguson, J. F., Klopping, F. J., Chen, T., Seibert, J. E., Hare, J. L., and Brady, J. L.:
The 4D microgravity method for waterflood surveillance: Part 3 — 4D absolute microgravity surveys at Prudhoe Bay, Alaska,
GEOPHYSICS,
73, WA163–WA171, https://doi.org/10.1190/1.2992510, 2008.
Ferro, V. and Porto, P.:
Sediment Delivery Distributed (SEDD) Model,
J. Hydrol. Eng.,
5, 411–422, https://doi.org/10.1061/(ASCE)1084-0699(2000)5:4(411), 2000.
Fores, B., Champollion, C., Le Moigne, N., and Chery, J.:
Impact of ambient temperature on spring-based relative gravimeter measurements,
J. Geodesy,
91, 269–277, https://doi.org/10.1007/s00190-016-0961-2, 2017.
Furukawa, Y. and Ponce, J.:
Accurate, dense, and robust multiview stereopsis,
IEEE T. Pattern Anal.,
32, 1362–1376, https://doi.org/10.1109/TPAMI.2009.161, 2010.
Ge, X., Li, T., Zhang, S., and Peng, M.:
What causes the extremely heavy rainfall in Taiwan during Typhoon Morakot (2009)?,
Atmos. Sci. Lett.,
11, 46–50, 2010.
Gelaro, R., McCarty, W., Suárez, M. J., Todling, R., Molod, A., Takacs, L., Randles, C. A., Darmenov, A., Bosilovich, M. G., Reichle, R., Wargan, K., Coy, L., Cullather, R., Draper, C., Akella, S., Buchard, V., Conaty, A., da Silva, A. M., Gu, W., Kim, G.-K., Koster, R., Lucchesi, R., Merkova, D., Nielsen, J. E., Partyka, G., Pawson, S., Putman, W., Rienecker, M., Schubert, S. D., Sienkiewicz, M., and Zhao, B.:
The Modern-Era Retrospective Analysis for Research and Applications, Version 2 (MERRA-2),
J. Climate,
30, 5419–5454, https://doi.org/10.1175/JCLI-D-16-0758.1, 2017.
Han, S. C., Shum, C. K., Bevis, M., Ji, C., and Kuo, C.-Y.:
Crustal Dilatation Observed by GRACE After the 2004 Sumatra-Andaman Earthquake,
Science,
313, 658–663, https://doi.org/10.1126/science.1128661, 2006.
Hare, J. L., Ferguson, J. F., and Brady, J. L.:
The 4D microgravity method for waterflood surveillance: Part IV – Modeling and interpretation of early epoch 4D gravity surveys at Prudhoe Bay, Alaska,
GEOPHYSICS,
73, WA173–WA180, https://doi.org/10.1190/1.2991120, 2008.
Hinderer, J., Crossley, D., and Warburton, R. J.:
Superconducting Gravimetry, in: Treatise on Geophysics, 2nd edn., edited by: Schubert, G., Elsevier, Oxford, UK, 59–115, https://doi.org/10.1016/B978-0-444-53802-4.00062-2, 2015.
Ho, C. S.:
A synthesis of the geologic evolution of Taiwan,
Tectonophysics,
125, 1–16, 1986.
Horton, A. J., Constantine, J. A., Hales, T. C., Goossens, B., Bruford, M. W., and Lazarus, E. D.:
Modification of river meandering by tropical deforestation,
Geology,
45, 511–514, https://doi.org/10.1130/G38740.1, 2017.
Hovius, N., Stark, C. P., Tsu, C. H., Chuan, L. J., Hao-tsu, C., Jiun-chuan, L., Chu, H. T., and Lin, J. C.:
Supply and removal of sediment in a landslide-dominated mountain belt: Central Range, Taiwan,
J. Geol.,
108, 73–89, 2000.
Hovius, N., Meunier, P., Lin, C.-W. W., Chen, H., Chen, Y.-G. G., Dadson, S., Horng, M.-J. J., and Lines, M.:
Prolonged seismically induced erosion and the mass balance of a large earthquake,
Earth Planet. Sci. Lett.,
304, 347–355, https://doi.org/10.1016/j.epsl.2011.02.005, 2011.
Hsieh, M.-L. and Capart, H.:
Late Holocene episodic river aggradation along the Lao-nong River (southwestern Taiwan): An application to the Tseng-wen Reservoir Transbasin Diversion Project,
Eng. Geol.,
159, 83–97, https://doi.org/10.1016/J.ENGGEO.2013.03.019, 2013.
Hwang, C., Wang, C. G., and Lee, L. H.:
Adjustment of relative gravity measurements using weighted and datum-free constraints,
Comput. Geosci.,
28, 1005–1015, 2002.
IES-AS:
GPS LAB,
available at: http://gps.earth.sinica.edu.tw/ (last access: 18 June 2020), 2015.
Jaboyedoff, M., Oppikofer, T., Abellán, A., Derron, M. H., Loye, A., Metzger, R., and Pedrazzini, A.:
Use of LIDAR in landslide investigations: A review,
Nat. Hazards,
61, 5–28, https://doi.org/10.1007/s11069-010-9634-2, 2012.
Jacob, T., Chery, J., Bayer, R., Le Moigne, N., Boy, J.-P., Vernant, P., and Boudin, F.:
Time-lapse surface to depth gravity measurements on a karst system reveal the dominant role of the epikarst as a water storage entity,
Geophys. J. Int.,
177, 347–360, https://doi.org/10.1111/j.1365-246X.2009.04118.x, 2009.
Jacob, T., Bayer, R., Chery, J., and Le Moigne, N.:
Time-lapse microgravity surveys reveal water storage heterogeneity of a karst aquifer,
J. Geophys. Res.,
115, B06402, https://doi.org/10.1029/2009JB006616, 2010.
Kao, R., Hwang, C., Kim, J. W., Ching, K.-E., Masson, F., Hsieh, W.-C., Le Moigne, N., and Cheng, C.-C.:
Absolute gravity change in Taiwan: Present result of geodynamic process investigation.,
Terr. Atmos. Ocean. Sci.,
28, 855–875, 2017.
Kazama, T., Okubo, S., Sugano, T., Matsumoto, S., Sun, W., Tanaka, Y., and Koyama, E.:
Absolute gravity change associated with magma mass movement in the conduit of Asama Volcano (Central Japan), revealed by physical modeling of hydrological gravity disturbances,
J. Geophys. Res.,
120, 1263–1287, https://doi.org/10.1002/2014JB011563, 2015.
Lin, C.-W., Chang, W.-S., Liu, S.-H., Tsai, T.-T., Lee, S.-P., Tsang, Y.-C., Shieh, C.-L., and Tseng, C.-M.:
Landslides triggered by the 7 August 2009 Typhoon Morakot in southern Taiwan,
Eng. Geol.,
123, 3–12, https://doi.org/10.1016/j.enggeo.2011.06.007, 2011.
Lin, G.-W. and Chen, H.:
Recurrence of hyper-concentration flows on the orogenic, subtropical island of Taiwan,
J. Hydrol.,
502, 139–144, https://doi.org/10.1016/J.JHYDROL.2013.08.036, 2013.
Liu, H. and Pike, W. T.:
A micromachined angular-acceleration sensor for geophysical applications,
Appl. Phys. Lett.,
109, 173506, https://doi.org/10.1063/1.4966547, 2016.
Liu, Y.-C., Hwang, C., Han, J., Kao, R., Wu, C.-R., Shih, H.-C., and Tangdamrongsub, N.:
Sediment-Mass Accumulation Rate and Variability in the East China Sea Detected by GRACE,
Remote Sens.,
8, 777, https://doi.org/10.3390/rs8090777, 2016.
Longuevergne, L., Boy, J.-P., Florsch, N., Viville, D., Ferhat, G., Ulrich, P., Luck, B., and Hinderer, J.:
Local and global hydrological contributions to gravity variations observed in Strasbourg,
J. Geodyn.,
48, 189–194, https://doi.org/10.1016/j.jog.2009.09.008, 2009.
Longuevergne, L., Wilson, C. R., Scanlon, B. R., and Crétaux, J. F.: GRACE water storage estimates for the Middle East and other regions with significant reservoir and lake storage, Hydrol. Earth Syst. Sci., 17, 4817–4830, https://doi.org/10.5194/hess-17-4817-2013, 2013.
Lyard, F., Lefevre, F., Letellier, T., and Francis, O.: Modelling the global ocean tides: Modern insights from FES2004, Ocean Dynam., 56, 394–415, https://doi.org/10.1007/s10236-006-0086-x, 2006.
Ménoret, V., Vermeulen, P., Le Moigne, N., Bonvalot, S., Bouyer, P., Landragin, A., and Desruelle, B.:
Gravity measurements below 10−9g with a transportable absolute quantum gravimeter,
Sci. Rep.,
8, 1–11, https://doi.org/10.1038/s41598-018-30608-1, 2018.
Merriam, J. B.:
Atmospheric pressure and gravity,
Geophys. J. Int.,
109, 488–500, https://doi.org/10.1111/j.1365-246X.1992.tb00112.x, 1992.
Middlemiss, R. P., Samarelli, A., Paul, D. J., Hough, J., Rowan, S., and Hammond, G. D.:
The First Measurement of the Earth Tides with a MEMS Gravimeter,
Nature,
531, 614–617, https://doi.org/10.1038/nature17397, 2016.
Middlemiss, R. P., Bramsiepe, S. G., Douglas, R., Hough, J., Paul, D. J., Rowan, S., and Hammond, G. D.:
Field tests of a portable MEMS gravimeter,
Sensors (Switzerland),
17, 1–12, https://doi.org/10.3390/s17112571, 2017.
Milliman, J. D. and Farnsworth, K. L.:
River Discharge to the Coastal Ocean: A Global Synthesis, Cambridge University Press, New York, USA, 2011.
Molnar, P., Anderson, R. S., and Anderson, S. P.: Tectonics, fracturing of rock, and erosion,
J. Geophys. Res.-Earth,
112, 1–12, https://doi.org/10.1029/2005JF000433, 2007.
Morera, S. B., Condom, T., Crave, A., Steer, P., and Guyot, J. L.:
The impact of extreme El Niño events on modern sediment transport along the western Peruvian Andes (1968–2012),
Sci. Rep.,
7, 11947, https://doi.org/10.1038/s41598-017-12220-x, 2017.
Mouyen, M., Masson, F., Hwang, C., Cheng, C.-C., Le Moigne, N., Lee, C.-W., Kao, R., and Hsieh, W.-C.:
Erosion effects assessed by repeated gravity measurements in southern Taiwan,
Geophys. J. Int.,
192, 113–136, https://doi.org/10.1093/gji/ggs019, 2013.
Mouyen, M., Longuevergne, L., Steer, P., Crave, A., Lemoine, J.-M. J. M., Save, H., and Robin, C.:
Assessing modern river sediment discharge to the ocean using satellite gravimetry,
Nat. Commun.,
9, 3384, https://doi.org/10.1038/s41467-018-05921-y, 2018.
Mouyen, M., Steer, P., Chang, K.-J., Le Moigne, N., Hwang, C., Hsieh, W.-C., Jeandet, L., Longuevergne, L., Cheng, C.-C., Boy, J.-P., and Masson, F.: data_mouyen_etal_Esurf, available at: https://chalmersuniversity.box.com/s/q5h1lpbflqlx9wi9yruway3k9jorflwe
(last access: 18 June 2020), 2019.
Nagy, D.:
The prism method for terrain corrections using digital computers,
Pure Appl. Geophys.,
63, 31–39, https://doi.org/10.1007/BF00875156, 1966.
Naujoks, M., Weise, A., Kroner, C., and Jahr, T.:
Detection of small hydrological variations in gravity by repeated observations with relative gravimeters,
J. Geodesy,
82, 543–553, https://doi.org/10.1007/s00190-007-0202-9, 2008.
Niebauer, T. M.:
Gravimetric methods – absolute gravimeter?: instruments concepts and implementation,
in: Treatise on Geophysics, vol. 3,
edited by: Schubert, G.,
Elsevier, Oxford, UK, 37–57, 2015.
Niebauer, T. M., Sasagawa, G. S., Faller, J. E., Hilt, R., and Klopping, F.:
A new generation of absolute gravimeters,
Metrologia,
32, 159–180, 1995.
Niethammer, U., James, M. R., Rothmund, S., Travelletti, J., and Joswig, M.:
UAV-based remote sensing of the Super-Sauze landslide: Evaluation and results,
Eng. Geol.,
128, 2–11, https://doi.org/10.1016/j.enggeo.2011.03.012, 2012.
Oborne, M.:
Mission Planner,
available at: https://ardupilot.org/planner/ (last access: 10 April 2020), 2010.
Pail, R., Bingham, R., Braitenberg, C., Dobslaw, H., Eicker, A., Güntner, A., Horwath, M., Ivins, E., Longuevergne, L., Panet, I., and Wouters, B.:
Science and User Needs for Observing Global Mass Transport to Understand Global Change and to Benefit Society,
Surv. Geophys.,
36, 743–772, https://doi.org/10.1007/s10712-015-9348-9, 2015.
Peizhen, Z., Molnar, P., and Downs, W. R.:
Increased sedimentation rates and grain sizes 2–4 Myr ago due to the influence of climate change on erosion rates,
Nature,
410, 891–897, https://doi.org/10.1038/35073504, 2001.
Petrov, L. and Boy, J.-P.:
Study of the atmospheric pressure loading signal in very long baseline interferometry observations,
J. Geophys. Res.,
109, B03405, https://doi.org/10.1029/2003JB002500, 2004.
Pfeffer, J., Champollion, C., Favreau, G., Cappelaere, B., Hinderer, J., Boucher, M., Nazoumou, Y., Oï, M., Mouyen, M., Henri, C., Moigne, N. Le, Deroussi, S., Demarty, J., Boulain, N., Benarrosh, N., Robert, O., Le Moigne, N., Deroussi, S., Demarty, J., Boulain, N., Benarrosh, N., and Robert, O.:
Evaluating surface and subsurface water storage variations at small time and space scales from relative gravity measurements in semiarid Niger,
Water Resour. Res.,
49, 3276–3291, https://doi.org/10.1002/wrcr.20235, 2013.
Pix4D:
Pix4Dmapper: professional drone mapping and photogrammetry software,
available at: https://www.pix4d.com/product/pix4dmapper-photogrammetry-software, last access: 10 April 2020.
Rebischung, P., Griffiths, J., Ray, J., Schmid, R., Collilieux, X., and Garayt, B.:
IGS08: The IGS realization of ITRF2008,
GPS Solut.,
16, 483–494, https://doi.org/10.1007/s10291-011-0248-2, 2012.
Rodell, M., Houser, P. R., Jambor, U., Gottschalck, J., Mitchell, K., Meng, C.-J. J., Arsenault, K., Cosgrove, B., Radakovich, J., Bosilovich, M., Entin*, J. K., Walker, J. P., Lohmann, D., Toll, D., Entin, J. K., Walker, J. P., Lohmann, D., and Toll, D.:
The Global Land Data Assimilation System,
B. Am. Meteorol. Soc.,
85, 381–394, https://doi.org/10.1175/BAMS-85-3-381, 2004.
Schwab, M., Rieke-Zapp, D., Schneider, H., Liniger, M., and Schlunegger, F.:
Landsliding and sediment flux in the Central Swiss Alps: A photogrammetric study of the Schimbrig landslide, Entlebuch,
Geomorphology,
97, 392–406, https://doi.org/10.1016/j.geomorph.2007.08.019, 2008.
Scintrex Ltd.:
CG-5 Scintrex Autograv System, Operation Manual, Scintrex Limited, Concord, Ontario, Canada, available at:
http://www.scintrexltd.com/ (last access: 18 June 2020), 2010.
Seitz, S. M., Curless, B., Diebel, J., Scharstein, D., and Szeliski, R.:
A comparison and evaluation of multi-view stereo reconstruction algorithms,
Proc. CVPR IEEE,
1, 519–526., 2006.
Steer, P., Huismans, R. S., Valla, P. G., Gac, S., and Herman, F.:
Bimodal plio-quaternary glacial erosion of fjords and low-relief surfaces in Scandinavia,
Nat. Geosci.,
5, 635–639, https://doi.org/10.1038/ngeo1549, 2012.
Steer, P., Simoes, M., Cattin, R., and Shyu, J. B. H.:
Erosion influences the seismicity of active thrust faults,
Nat. Commun.,
5, 5564, https://doi.org/10.1038/ncomms6564, 2014.
Taiwan Water Resources Agency:
Hydrological Year Book of Taiwan Republic of China,
Taipei, Taiwan, 2019.
Tapley, B. D., Bettadpur, S., Ries, J. C., Thompson, P. F., and Watkins, M. M.:
GRACE measurements of mass variability in the Earth system,
Science,
305, 503–505, https://doi.org/10.1126/science.1099192, 2004.
Torres, A., Brandt, J., Lear, K., and Liu, J.:
A looming tragedy of the sand commons,
Science,
357, 970–971, https://doi.org/10.1126/science.aao0503, 2017.
Tu, J. T., Chou, C., and Chu, P. S.:
The abrupt shift of typhoon activity in the vicinity of Taiwan and its association with western North Pacific-East Asian climate change,
J. Climate,
22, 3617–3628, https://doi.org/10.1175/2009JCLI2411.1, 2009.
Van Camp, M. and Vauterin, P.:
Tsoft: graphical and interactive software for the analysis of time series and Earth tides,
Comput. Geosci.,
31, 631–640, https://doi.org/10.1016/j.cageo.2004.11.015, 2005.
Van Camp, M., Williams, S. D. P., and Francis, O.:
Uncertainty of absolute gravity measurements,
J. Geophys. Res.,
110, B05406, https://doi.org/10.1029/2004JB003497, 2005.
Van Camp, M., de Viron, O., Scherneck, H.-G. G., Hinzen, K.-G. G., Williams, S. D. P., Lecocq, T., Quinif, Y., and Camelbeeck, T.:
Repeated absolute gravity measurements for monitoring slow intraplate vertical deformation in western Europe,
J. Geophys. Res.,
116, B08402, https://doi.org/10.1029/2010JB008174, 2011.
Van Camp, M., de Viron, O., Watlet, A., Meurers, B., Francis, O., and Caudron, C.:
Geophysics From Terrestrial Time-Variable Gravity Measurements,
Rev. Geophys.,
55, 938–992, https://doi.org/10.1002/2017RG000566, 2017.
Wessel, P., Smith, W. H. F., Scharroo, R., Luis, J., and Wobbe, F.:
Generic Mapping Tools: Improved Version Released,
Eos T. Am. Geophys. Un.,
94, 409–410, https://doi.org/10.1002/2013EO450001, 2013.
Willett, S. D.:
Orogeny and orography: The effects of erosion on the structure of mountain belts,
J. Geophys. Res.,
104, 928–957, https://doi.org/10.1029/1999JB900248, 1999.
Yanites, B. J., Tucker, G. E., Mueller, K. J., and Chen, Y. G.:
How rivers react to large earthquakes: Evidence from central Taiwan,
Geology,
38, 639–642, https://doi.org/10.1130/G30883.1, 2010.
Short summary
Land erosion creates sediment particles that are redistributed from mountains to oceans through climatic, tectonic and human activities, but measuring the mass of redistributed sediment is difficult. Here we describe a new method combining gravity and photogrammetry measurements, which make it possible to weigh the mass of sediment redistributed by a landslide and a river in Taiwan from 2015 to 2017. Trying this method in other regions will help us to better understand the erosion process.
Land erosion creates sediment particles that are redistributed from mountains to oceans through...