Research article 03 Jun 2020
Research article | 03 Jun 2020
Parameterization of river incision models requires accounting for environmental heterogeneity: insights from the tropical Andes
Benjamin Campforts et al.
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A new approach to reconstruct the temporal variation of rock surface temperature using the thermoluminescence (TL) of feldspar is introduced. Multiple TL signals or thermometers in the range of 210 to 250 °C are sensitive to typical surface temperature fluctuations and can be used to constrain thermal histories of rocks over ~50 kyr. We show that it is possible to recover thermal histories of rocks using inverse modeling and with δ18O anomalies as a priori information.
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Benjamin Lehmann, Frédéric Herman, Pierre G. Valla, Georgina E. King, and Rabiul H. Biswas
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Syed M. Touhidul Mustafa, M. Moudud Hasan, Ajoy Kumar Saha, Rahena Parvin Rannu, Els Van Uytven, Patrick Willems, and Marijke Huysmans
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Lionel Benoit, Aurelie Gourdon, Raphaël Vallat, Inigo Irarrazaval, Mathieu Gravey, Benjamin Lehmann, Günther Prasicek, Dominik Gräff, Frederic Herman, and Gregoire Mariethoz
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Raphaël Normand, Guy Simpson, Frédéric Herman, Rabiul Haque Biswas, Abbas Bahroudi, and Bastian Schneider
Earth Surf. Dynam., 7, 321–344, https://doi.org/10.5194/esurf-7-321-2019, https://doi.org/10.5194/esurf-7-321-2019, 2019
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Jan De Niel and Patrick Willems
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Nevil Quinn, Günter Blöschl, András Bárdossy, Attilio Castellarin, Martyn Clark, Christophe Cudennec, Demetris Koutsoyiannis, Upmanu Lall, Lubomir Lichner, Juraj Parajka, Christa D. Peters-Lidard, Graham Sander, Hubert Savenije, Keith Smettem, Harry Vereecken, Alberto Viglione, Patrick Willems, Andy Wood, Ross Woods, Chong-Yu Xu, and Erwin Zehe
Proc. IAHS, 380, 3–8, https://doi.org/10.5194/piahs-380-3-2018, https://doi.org/10.5194/piahs-380-3-2018, 2018
Christopher J. Skinner, Tom J. Coulthard, Wolfgang Schwanghart, Marco J. Van De Wiel, and Greg Hancock
Geosci. Model Dev., 11, 4873–4888, https://doi.org/10.5194/gmd-11-4873-2018, https://doi.org/10.5194/gmd-11-4873-2018, 2018
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Nevil Quinn, Günter Blöschl, András Bárdossy, Attilio Castellarin, Martyn Clark, Christophe Cudennec, Demetris Koutsoyiannis, Upmanu Lall, Lubomir Lichner, Juraj Parajka, Christa D. Peters-Lidard, Graham Sander, Hubert Savenije, Keith Smettem, Harry Vereecken, Alberto Viglione, Patrick Willems, Andy Wood, Ross Woods, Chong-Yu Xu, and Erwin Zehe
Hydrol. Earth Syst. Sci., 22, 5735–5739, https://doi.org/10.5194/hess-22-5735-2018, https://doi.org/10.5194/hess-22-5735-2018, 2018
Antoine Cogez, Frédéric Herman, Éric Pelt, Thierry Reuschlé, Gilles Morvan, Christopher M. Darvill, Kevin P. Norton, Marcus Christl, Lena Märki, and François Chabaux
Earth Surf. Dynam., 6, 121–140, https://doi.org/10.5194/esurf-6-121-2018, https://doi.org/10.5194/esurf-6-121-2018, 2018
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Sediments produced by glaciers are transported by rivers and wind toward the ocean. During their journey, these sediments are weathered, and we know that this has an impact on climate. One key factor is time, but the duration of this journey is largely unknown. We were able to measure the average time that sediment spends only in the glacial area. This time is 100–200 kyr, which is long and allows a lot of processes to act on sediments during their journey.
John J. Armitage, Alexander C. Whittaker, Mustapha Zakari, and Benjamin Campforts
Earth Surf. Dynam., 6, 77–99, https://doi.org/10.5194/esurf-6-77-2018, https://doi.org/10.5194/esurf-6-77-2018, 2018
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We explore how two landscape evolution models respond to a change in climate. The two models are developed from a divergent assumption on the efficiency of sediment transport. Despite the different resulting mathematics, both numerical models display a similar functional response to a change in precipitation. However, if we model sediment transport rather than assume it is instantaneously removed, the model responds more rapidly, with a response time similar to that observed in nature.
Wolfgang Schwanghart and Dirk Scherler
Earth Surf. Dynam., 5, 821–839, https://doi.org/10.5194/esurf-5-821-2017, https://doi.org/10.5194/esurf-5-821-2017, 2017
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François Clapuyt, Veerle Vanacker, Fritz Schlunegger, and Kristof Van Oost
Earth Surf. Dynam., 5, 791–806, https://doi.org/10.5194/esurf-5-791-2017, https://doi.org/10.5194/esurf-5-791-2017, 2017
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Edouard Goudenhoofdt, Laurent Delobbe, and Patrick Willems
Hydrol. Earth Syst. Sci., 21, 5385–5399, https://doi.org/10.5194/hess-21-5385-2017, https://doi.org/10.5194/hess-21-5385-2017, 2017
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Knowing the characteristics of extreme precipitation is useful for flood management applications like sewer system design. The potential of a 12-year high-quality weather radar precipitation dataset is investigated by comparison with rain gauges. Despite known limitations, a good agreement is found between the radar and the rain gauges. Using the radar data allow us to reduce the uncertainty of the extreme value analysis, especially for short duration extremes related to thunderstorms.
Eric Laloy, Koen Beerten, Veerle Vanacker, Marcus Christl, Bart Rogiers, and Laurent Wouters
Earth Surf. Dynam., 5, 331–345, https://doi.org/10.5194/esurf-5-331-2017, https://doi.org/10.5194/esurf-5-331-2017, 2017
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Over very long timescales, 100 000 years or more, landscapes may drastically change. Sediments preserved in these landscapes have a cosmogenic radionuclide inventory that tell us when and how fast such changes took place. In this paper, we provide first evidence of an elevated long-term erosion rate of the northwestern Campine Plateau (lowland Europe), which can be explained by the loose nature of the subsoil.
Auguste Gires, Ioulia Tchiguirinskaia, Daniel Schertzer, Susana Ochoa-Rodriguez, Patrick Willems, Abdellah Ichiba, Li-Pen Wang, Rui Pina, Johan Van Assel, Guendalina Bruni, Damian Murla Tuyls, and Marie-Claire ten Veldhuis
Hydrol. Earth Syst. Sci., 21, 2361–2375, https://doi.org/10.5194/hess-21-2361-2017, https://doi.org/10.5194/hess-21-2361-2017, 2017
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Data from 10 urban or peri-urban catchments located in five EU countries are used to analyze the imperviousness distribution and sewer network geometry. Consistent scale invariant features are retrieved for both (fractal dimensions can be defined), which enables to define a level of urbanization. Imperviousness representation in operational model is also found to exhibit scale-invariant features (even multifractality). The research was carried out as part of the UE INTERREG IV RainGain project.
Gerard Govers, Roel Merckx, Bas van Wesemael, and Kristof Van Oost
SOIL, 3, 45–59, https://doi.org/10.5194/soil-3-45-2017, https://doi.org/10.5194/soil-3-45-2017, 2017
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We discuss pathways towards better soil protection in the 21st century. The efficacy of soil conservation technology is not a fundamental barrier for a more sustainable soil management. However, soil conservation is generally not directly beneficial to the farmer. We believe that the solution of this conundrum is a rapid, smart intensification of agriculture in the Global South. This will reduce the financial burden and will, at the same time, allow more effective conservation.
Naomi Geeraert, Fred O. Omengo, Fredrick Tamooh, Trent R. Marwick, Alberto V. Borges, Gerard Govers, and Steven Bouillon
Biogeosciences Discuss., https://doi.org/10.5194/bg-2017-31, https://doi.org/10.5194/bg-2017-31, 2017
Manuscript not accepted for further review
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We observed that the relationship between the concentrations and the water discharge in the Tana River changed in wet seasons with and without flooding. Detailed sampling in those seasons is required in order to construct several rating curves and to obtain reliable flux estimates. The sediment and carbon fluxes in function of discharge will help us to asses the flux changes that can be expected when the hydrology changes due to climate change or human impact.
Tanja de Boer-Euser, Laurène Bouaziz, Jan De Niel, Claudia Brauer, Benjamin Dewals, Gilles Drogue, Fabrizio Fenicia, Benjamin Grelier, Jiri Nossent, Fernando Pereira, Hubert Savenije, Guillaume Thirel, and Patrick Willems
Hydrol. Earth Syst. Sci., 21, 423–440, https://doi.org/10.5194/hess-21-423-2017, https://doi.org/10.5194/hess-21-423-2017, 2017
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In this study, the rainfall–runoff models of eight international research groups were compared for a set of subcatchments of the Meuse basin to investigate the influence of certain model components on the modelled discharge. Although the models showed similar performances based on general metrics, clear differences could be observed for specific events. The differences during drier conditions could indeed be linked to differences in model structures.
Benjamin Campforts, Wolfgang Schwanghart, and Gerard Govers
Earth Surf. Dynam., 5, 47–66, https://doi.org/10.5194/esurf-5-47-2017, https://doi.org/10.5194/esurf-5-47-2017, 2017
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Despite a growing interest in landscape evolution models, accuracy assessment of the numerical methods they are based on has received little attention. We test a higher-order flux-limiting finite-volume method to simulate river incision and tectonic displacement. We show that this scheme significantly influences the evolution of simulated landscapes and the spatial and temporal variability of erosion rates. Moreover, it allows for the simulation of lateral tectonic displacement on a fixed grid.
Marijn Van de Broek, Stijn Temmerman, Roel Merckx, and Gerard Govers
Biogeosciences, 13, 6611–6624, https://doi.org/10.5194/bg-13-6611-2016, https://doi.org/10.5194/bg-13-6611-2016, 2016
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The results of this study on the organic carbon (OC) stocks of tidal marshes show that variations in OC stocks along estuaries are important and should be taken into account to make accurate estimates of the total amount of OC stored in these ecosystems. Moreover, our results clearly show that most studies underestimate the variation in OC stocks along estuaries due to a shallow sampling depth, neglecting the variation in OC decomposition after burial along estuaries.
Hossein Tabari, Rozemien De Troch, Olivier Giot, Rafiq Hamdi, Piet Termonia, Sajjad Saeed, Erwan Brisson, Nicole Van Lipzig, and Patrick Willems
Hydrol. Earth Syst. Sci., 20, 3843–3857, https://doi.org/10.5194/hess-20-3843-2016, https://doi.org/10.5194/hess-20-3843-2016, 2016
Vincent Wolfs, Quan Tran Quoc, and Patrick Willems
Proc. IAHS, 373, 1–6, https://doi.org/10.5194/piahs-373-1-2016, https://doi.org/10.5194/piahs-373-1-2016, 2016
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Water management is constantly evolving. Trends, such as population growth, urbanization and climate change, pose new challenges to water management. We developed a new and flexible modelling approach to generate very fast models of catchment hydrology, rivers and sewer systems that can be tailored to numerous applications in water management. To illustrate the developed framework, a case study of integrated hydrological-hydraulic modelling for the Grote Nete catchment in Belgium is elaborated.
C. Onyutha and P. Willems
Hydrol. Earth Syst. Sci. Discuss., https://doi.org/10.5194/hessd-12-12167-2015, https://doi.org/10.5194/hessd-12-12167-2015, 2015
Revised manuscript not accepted
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To investigate the possible change in catchment behavior, which may interfere with the flow-rainfall relationship, three rainfall-runoff models were applied to the main catchments of the Nile Basin in Africa based on inputs covering the period from 1940 to 2003. There was close agreement between the changes in the observed and simulated overland flow from all the models. Thus, change in catchment behavior due to anthropogenic influence in the Nile basin over the selected time period was minimal.
A. Molina, V. Vanacker, E. Brisson, D. Mora, and V. Balthazar
Hydrol. Earth Syst. Sci., 19, 4201–4213, https://doi.org/10.5194/hess-19-4201-2015, https://doi.org/10.5194/hess-19-4201-2015, 2015
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Andean catchments play a key role in the provision of freshwater resources. The development of megacities in the inter-Andean valleys raises severe concerns about growing water scarcity. This study is one of the first long-term (1970s-now) analyses of the role of land cover and climate change on provision and regulation of streamflow in the tropical Andes. Forest conversion had the largest impact on streamflow, leading to a 10 % net decrease in streamflow over the last 40 years.
L.-P. Wang, S. Ochoa-Rodríguez, C. Onof, and P. Willems
Hydrol. Earth Syst. Sci., 19, 4001–4021, https://doi.org/10.5194/hess-19-4001-2015, https://doi.org/10.5194/hess-19-4001-2015, 2015
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A new methodology is proposed in this paper, focusing on improving the applicability of the operational weather radar data to urban hydrology with rain gauge data. The proposed methodology employed a simple yet effective technique to extract additional information (called local singularity structure) from radar data, which was generally ignored in related works. The associated improvement can be particularly seen in capturing storm peak magnitudes, which is critical for urban applications.
N. K. Meyer, W. Schwanghart, O. Korup, and F. Nadim
Nat. Hazards Earth Syst. Sci., 15, 985–995, https://doi.org/10.5194/nhess-15-985-2015, https://doi.org/10.5194/nhess-15-985-2015, 2015
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In the past decades the importance of and reliance on all kinds of transport networks has grown extensively making them more vulnerable to any kind of hazard. The linear structure of road networks is especially sensitive to debris flows, a process frequently occurring in the mountainous area of Norway. The paper quantifies the functional risk associated with these processes. The results reveal that the costs related to route closures are strongly related to the information status of drivers.
C. Onyutha and P. Willems
Hydrol. Earth Syst. Sci., 19, 2227–2246, https://doi.org/10.5194/hess-19-2227-2015, https://doi.org/10.5194/hess-19-2227-2015, 2015
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Variability of rainfall in the Nile Basin was found linked to the large-scale atmosphere-ocean interactions. This finding is vital for a number of water management and planning aspects. To give just one example, it may help in obtaining improved quantiles for flood or drought/water scarcity risk management. This is especially important under conditions of (1) questionable data quality, and (2) data scarcity. These conditions are typical of the Nile Basin and inevitably need to be addressed.
M. A. Sunyer, Y. Hundecha, D. Lawrence, H. Madsen, P. Willems, M. Martinkova, K. Vormoor, G. Bürger, M. Hanel, J. Kriaučiūnienė, A. Loukas, M. Osuch, and I. Yücel
Hydrol. Earth Syst. Sci., 19, 1827–1847, https://doi.org/10.5194/hess-19-1827-2015, https://doi.org/10.5194/hess-19-1827-2015, 2015
C. C. Clason, D. W. F. Mair, P. W. Nienow, I. D. Bartholomew, A. Sole, S. Palmer, and W. Schwanghart
The Cryosphere, 9, 123–138, https://doi.org/10.5194/tc-9-123-2015, https://doi.org/10.5194/tc-9-123-2015, 2015
A. Ochoa, L. Pineda, P. Crespo, and P. Willems
Hydrol. Earth Syst. Sci., 18, 3179–3193, https://doi.org/10.5194/hess-18-3179-2014, https://doi.org/10.5194/hess-18-3179-2014, 2014
D. Vrebos, T. Vansteenkiste, J. Staes, P. Willems, and P. Meire
Hydrol. Earth Syst. Sci., 18, 1119–1136, https://doi.org/10.5194/hess-18-1119-2014, https://doi.org/10.5194/hess-18-1119-2014, 2014
D. E. Mora, L. Campozano, F. Cisneros, G. Wyseure, and P. Willems
Hydrol. Earth Syst. Sci., 18, 631–648, https://doi.org/10.5194/hess-18-631-2014, https://doi.org/10.5194/hess-18-631-2014, 2014
M. Fox, F. Herman, S. D. Willett, and D. A. May
Earth Surf. Dynam., 2, 47–65, https://doi.org/10.5194/esurf-2-47-2014, https://doi.org/10.5194/esurf-2-47-2014, 2014
W. Schwanghart and D. Scherler
Earth Surf. Dynam., 2, 1–7, https://doi.org/10.5194/esurf-2-1-2014, https://doi.org/10.5194/esurf-2-1-2014, 2014
M. T. Taye and P. Willems
Hydrol. Earth Syst. Sci. Discuss., https://doi.org/10.5194/hessd-10-7857-2013, https://doi.org/10.5194/hessd-10-7857-2013, 2013
Revised manuscript not accepted
Related subject area
Physical: Geomorphology (including all aspects of fluvial, coastal, aeolian, hillslope and glacial geomorphology)
How do modeling choices and erosion zone locations impact the representation of connectivity and the dynamics of suspended sediments in a multi-source soil erosion model?
Different coastal marsh sites reflect similar topographic conditions under which bare patches and vegetation recovery occur
Coupling threshold theory and satellite-derived channel width to estimate the formative discharge of Himalayan foreland rivers
Inertial drag and lift forces for coarse grains on rough alluvial beds measured using in-grain accelerometers
GERALDINE (Google Earth Engine supRaglAciaL Debris INput dEtector): a new tool for identifying and monitoring supraglacial landslide inputs
Short communication: Multiscalar roughness length decomposition in fluvial systems using a transform-roughness correlation (TRC) approach
Evolution of events before and after the 17 June 2017 rock avalanche at Karrat Fjord, West Greenland – a multidisciplinary approach to detecting and locating unstable rock slopes in a remote Arctic area
Quantifying Thresholds of Barrier Geomorphic Change in a Cross-Shore Sediment Partitioning Model
Complementing scale experiments of rivers and estuaries with numerically modelled hydrodynamics
Characterization of morphological units in a small, forested stream using close-range remotely piloted aircraft imagery
Laboratory observations on meltwater meandering rivulets on ice
Topographic controls on divide migration, stream capture, and diversification in riverine life
Ice sheet and palaeoclimate controls on drainage network evolution: an example from Dogger Bank, North Sea
Experimental study of sediment supply control on step formation, evolution, and stability
Development of smart boulders to monitor mass movements via the Internet of Things: A pilot study in Nepal
A bed load transport equation based on the spatial distribution of shear stress – Oak Creek revisited
Morphometric properties of alternate bars and water discharge: a laboratory investigation
Timing of exotic, far-traveled boulder emplacement and paleo-outburst flooding in the central Himalayas
A 6-year lidar survey reveals enhanced rockwall retreat and modified rockfall magnitudes/frequencies in deglaciating cirques
Short communication: Field data reveal that the transport probability of clasts in Peruvian and Swiss streams mainly depends on the sorting of the grains
Growing topography due to contrasting rock types in a tectonically dead landscape
Alluvial cover on bedrock channels: applicability of existing models
How Hack distributions of rill networks contribute to nonlinear slope length–soil loss relationships
Scale breaks of suspended sediment rating in large rivers in Germany induced by organic matter
Modelling impacts of spatially variable erosion drivers on suspended sediment dynamics
Mātauranga Māori in geomorphology: existing frameworks, case studies, and recommendations for incorporating Indigenous knowledge in Earth science
The impact of earthquakes on orogen-scale exhumation
Implications of present ground temperatures and relict stone stripes in the Ethiopian Highlands for the palaeoclimate of the tropics
Quantifying sediment mass redistribution from joint time-lapse gravimetry and photogrammetry surveys
Controls on the hydraulic geometry of alluvial channels: bank stability to gravitational failure, the critical-flow hypothesis, and conservation of mass and energy
Measuring river planform changes from remotely sensed data – a Monte Carlo approach to assessing the impact of spatially variable error
Entrainment and suspension of sand and gravel
Morphological evolution of bifurcations in tide-influenced deltas
Short communication: Landlab v2.0: a software package for Earth surface dynamics
Earthquake-induced debris flows at Popocatépetl Volcano, Mexico
Storm-induced sediment supply to coastal dunes on sand flats
Emerging crescentic patterns in modelled double sandbar systems under normally incident waves
Experimental evidence for bifurcation angles control on abandoned channel fill geometry
Large wood as a confounding factor in interpreting the width of spring-fed streams
River patterns reveal two stages of landscape evolution at an oblique convergent margin, Marlborough Fault System, New Zealand
Estimating sand bed load in rivers by tracking dunes: a comparison of methods based on bed elevation time series
Mass balance, grade, and adjustment timescales in bedrock channels
Determining flow directions in river channel networks using planform morphology and topology
Stabilising large grains in self-forming steep channels
Dynamic allometry in coastal overwash morphology
Potential links between Baltic Sea submarine terraces and groundwater seeping
Estimating the disequilibrium in denudation rates due to divide migration at the scale of river basins
Permafrost distribution in steep rock slopes in Norway: measurements, statistical modelling and implications for geomorphological processes
Reconstruction of river valley evolution before and after the emplacement of the giant Seymareh rock avalanche (Zagros Mts., Iran)
Experiments on patterns of alluvial cover and bedrock erosion in a meandering channel
Magdalena Uber, Guillaume Nord, Cédric Legout, and Luis Cea
Earth Surf. Dynam., 9, 123–144, https://doi.org/10.5194/esurf-9-123-2021, https://doi.org/10.5194/esurf-9-123-2021, 2021
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Understanding soil erosion and suspended sediment transport is an important issue in terms of soil and water resources management. This study analyzes the impact of choices made during numerical model setup on the modeled suspended sediment dynamics at the outlet of two mesoscale watersheds. While the modeled liquid and solid discharges were found to be sensitive to these choices, the actual location of sediment sources in each catchment was the most important feature.
Chen Wang, Lennert Schepers, Matthew L. Kirwan, Enrica Belluco, Andrea D'Alpaos, Qiao Wang, Shoujing Yin, and Stijn Temmerman
Earth Surf. Dynam., 9, 71–88, https://doi.org/10.5194/esurf-9-71-2021, https://doi.org/10.5194/esurf-9-71-2021, 2021
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Coastal marshes are valuable natural habitats with normally dense vegetation. The presence of bare patches is a symptom of habitat degradation. We found that the occurrence of bare patches and regrowth of vegetation is related to spatial variations in soil surface elevation and to the distance and connectivity to tidal creeks. These relations are similar in three marshes at very different geographical locations. Our results may help nature managers to conserve and restore coastal marshes.
Kumar Gaurav, François Métivier, A V Sreejith, Rajiv Sinha, Amit Kumar, and Sampat Kumar Tandon
Earth Surf. Dynam., 9, 47–70, https://doi.org/10.5194/esurf-9-47-2021, https://doi.org/10.5194/esurf-9-47-2021, 2021
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This study demonstrates an innovative methodology to estimate the formative discharge of alluvial rivers from remote sensing images. We have developed an automated algorithm in Python 3 to extract the width of a river channel from satellite images. Finally, this channel width is translated into discharge using a semi-empirical regime equation developed from field measurements and threshold channel theory that explains the first-order geometry of alluvial channels.
Georgios Maniatis, Trevor Hoey, Rebecca Hodge, Dieter Rickenmann, and Alexandre Badoux
Earth Surf. Dynam., 8, 1067–1099, https://doi.org/10.5194/esurf-8-1067-2020, https://doi.org/10.5194/esurf-8-1067-2020, 2020
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One of the most interesting problems in geomorphology concerns the conditions that mobilise sediments grains in rivers. Newly developed
smartpebbles allow for the measurement of those conditions directly if a suitable framework for analysis is followed. This paper connects such a framework with the physics used to described sediment motion and presents a series of laboratory and field smart-pebble deployments. Those quantify how grain shape affects the motion of coarse sediments in rivers.
William D. Smith, Stuart A. Dunning, Stephen Brough, Neil Ross, and Jon Telling
Earth Surf. Dynam., 8, 1053–1065, https://doi.org/10.5194/esurf-8-1053-2020, https://doi.org/10.5194/esurf-8-1053-2020, 2020
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Glacial landslides are difficult to detect and likely underestimated due to rapid covering or dispersal. Without improved detection rates we cannot constrain their impact on glacial dynamics or their potential climatically driven increases in occurrence. Here we present a new open-access tool (GERALDINE) that helps a user detect 92 % of these events over the past 38 years on a global scale. We demonstrate its ability by identifying two new, large glacial landslides in the Hayes Range, Alaska.
David L. Adams and Andrea Zampiron
Earth Surf. Dynam., 8, 1039–1051, https://doi.org/10.5194/esurf-8-1039-2020, https://doi.org/10.5194/esurf-8-1039-2020, 2020
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This paper presents a novel method of estimating the relative contribution of different physical scales of river bed topography to the total roughness length, based on thalweg elevation profiles. By providing more detailed information regarding the interaction between surface topography and fluid dynamics, the proposed technique may contribute to advances in hydraulics, channel morphodynamics, and bedload transport. Also, it may provide alternatives to existing representative roughness metrics.
Kristian Svennevig, Trine Dahl-Jensen, Marie Keiding, John Peter Merryman Boncori, Tine B. Larsen, Sara Salehi, Anne Munck Solgaard, and Peter H. Voss
Earth Surf. Dynam., 8, 1021–1038, https://doi.org/10.5194/esurf-8-1021-2020, https://doi.org/10.5194/esurf-8-1021-2020, 2020
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The 17 June 2017 Karrat landslide in Greenland caused a tsunami that killed four people. We apply a multidisciplinary workflow to reconstruct a timeline of events and find that three historic landslides occurred in 2009, 2016, and 2017. We also find evidence of much older periods of landslide activity. Three newly discovered active slopes might pose a future hazard. We speculate that the trigger for the recent events is melting permafrost due to a warming climate.
Daniel J. Ciarletta, Jennifer L. Miselis, Justin L. Shawler, and Christopher J. Hein
Earth Surf. Dynam. Discuss., https://doi.org/10.5194/esurf-2020-88, https://doi.org/10.5194/esurf-2020-88, 2020
Revised manuscript accepted for ESurf
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The world's sandy coastlines are increasingly altered by humans and sea-level rise, yet quantitative relationships between coastal landscapes and sediment availability remain poorly described. Using a novel modeling framework, we explore the evolution of coastal barrier islands under varying rates of sea-level rise and sediment availability. Our model results suggest that as sea levels increase, minor changes in sediment availability could result in rapid changes to barrier coasts.
Steven A. H. Weisscher, Marcio Boechat-Albernaz, Jasper R. F. W. Leuven, Wout M. Van Dijk, Yasuyuki Shimizu, and Maarten G. Kleinhans
Earth Surf. Dynam., 8, 955–972, https://doi.org/10.5194/esurf-8-955-2020, https://doi.org/10.5194/esurf-8-955-2020, 2020
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Accurate and continuous data collection is challenging in physical scale experiments. A novel means to augment measurements is to numerically model flow over the experimental digital elevation maps. We tested this modelling approach for one tidal and two river scale experiments and showed that modelled water depth and flow velocity closely resemble the measurements. The implication is that conducting experiments requires fewer measurements and results in flow data of better overall quality.
Carina Helm, Marwan A. Hassan, and David Reid
Earth Surf. Dynam., 8, 913–929, https://doi.org/10.5194/esurf-8-913-2020, https://doi.org/10.5194/esurf-8-913-2020, 2020
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Forested, gravel-bed streams possess complex channel morphologies which are difficult to objectively characterize. This paper describes a novel technique using a remotely piloted aircraft (RPA) to characterize these systems below the forest canopy. The results demonstrate the accuracy and coverage of RPAs for objectively characterizing and classifying these systems relative to more traditional, time-consuming techniques that are generally used in these environments.
Roberto Fernández and Gary Parker
Earth Surf. Dynam. Discuss., https://doi.org/10.5194/esurf-2020-90, https://doi.org/10.5194/esurf-2020-90, 2020
Revised manuscript accepted for ESurf
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We present a set of observations from laboratory experiments on meltwater meandering rivulets on ice and compare them (qualitatively and quantitatively) to patterns commonly found in meandering channels flowing over different materials. Our channels display great similarities with real rivers in spite of being much smaller. Higher temperature differences between water and ice create deeper and less sinuous channels with bends that preferentially point downstream and are not as rounded.
Nathan J. Lyons, Pedro Val, James S. Albert, Jane K. Willenbring, and Nicole M. Gasparini
Earth Surf. Dynam., 8, 893–912, https://doi.org/10.5194/esurf-8-893-2020, https://doi.org/10.5194/esurf-8-893-2020, 2020
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Organisms evolve in ever-changing environments under complex process interactions. We applied a new software modelling tool to assess how changes in river course impact the evolution of riverine species. Models illustrate the climatically and tectonically forced landscape changes that can drive riverine biodiversity, especially where topographic relief is low. This research demonstrates that river course changes can contribute to the high riverine biodiversity found in real-world lowland basins.
Andy R. Emery, David M. Hodgson, Natasha L. M. Barlow, Jonathan L. Carrivick, Carol J. Cotterill, Janet C. Richardson, Ruza F. Ivanovic, and Claire L. Mellett
Earth Surf. Dynam., 8, 869–891, https://doi.org/10.5194/esurf-8-869-2020, https://doi.org/10.5194/esurf-8-869-2020, 2020
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During the last ice age, sea level was lower, and the North Sea was land. The margin of a large ice sheet was at Dogger Bank in the North Sea. This ice sheet formed large rivers. After the ice sheet retreated down from the high point of Dogger Bank, the rivers had no water supply and dried out. Increased precipitation during the 15 000 years of land exposure at Dogger Bank formed a new drainage network. This study shows how glaciation and climate changes can control how drainage networks evolve.
Matteo Saletti and Marwan A. Hassan
Earth Surf. Dynam., 8, 855–868, https://doi.org/10.5194/esurf-8-855-2020, https://doi.org/10.5194/esurf-8-855-2020, 2020
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Mountain streams often display a stepped morphology but the conditions under which these steps form, remain stable, and eventually collapse are still not entirely clear. We run flume experiments to study how (a) the amount of sediment input and (b) channel width variations affect step dynamics in steep channels. Steps form preferentially in areas of flow convergence (channel narrowing) and their frequency is higher when sediment supply is larger than zero but smaller than the transport capacity.
Benedetta Dini, Georgina L. Bennett, Aldina M. A. Franco, Michael R. Z. Whitworth, Kristen L. Cook, Andreas Senn, and John M. Reynolds
Earth Surf. Dynam. Discuss., https://doi.org/10.5194/esurf-2020-78, https://doi.org/10.5194/esurf-2020-78, 2020
Revised manuscript accepted for ESurf
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We use Long Range smart sensors connected to a network based on the Internet of Things to explore the possibility of detecting hazardous boulder movements in real time. Prior to the 2019 monsoon season we inserted the devices in 23 boulders spread over debris flow channels and a landslide in northeastern Nepal. The data obtained in this pilot study shows the potential of this technology to be used in remote, hazard prone areas in future early warning systems.
Angel Monsalve, Catalina Segura, Nicole Hucke, and Scott Katz
Earth Surf. Dynam., 8, 825–839, https://doi.org/10.5194/esurf-8-825-2020, https://doi.org/10.5194/esurf-8-825-2020, 2020
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Part of the inaccuracies when estimating bed load transport in
gravel-bed rivers is because we are not considering the wide distributions of shear stress in these systems. We modified a subsurface-based bed load transport equation to include these distributions. By doing so, our approach accurately predicts bed load transport rates when the pavement layer is still present, while the original one predicts zero transport. For high flows, our method had similar performance to the original equation.
Marco Redolfi, Matilde Welber, Mattia Carlin, Marco Tubino, and Walter Bertoldi
Earth Surf. Dynam., 8, 789–808, https://doi.org/10.5194/esurf-8-789-2020, https://doi.org/10.5194/esurf-8-789-2020, 2020
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Alternate bars are large sediment deposits that tend to naturally form in rivers when the channel width is sufficiently large. Our laboratory experiments on a scaled model reveal that equilibrium properties of self-formed alternate bars highly depend on the water discharge with respect to the relevant theoretical thresholds. This work provides fundamental information for predicting the response of rivers to natural or human alterations of the flow regime.
Marius L. Huber, Maarten Lupker, Sean F. Gallen, Marcus Christl, and Ananta P. Gajurel
Earth Surf. Dynam., 8, 769–787, https://doi.org/10.5194/esurf-8-769-2020, https://doi.org/10.5194/esurf-8-769-2020, 2020
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Large boulders found in two Himalayan valleys show signs of long fluvial transport (>10 km). Paleo-discharges required to mobilize these boulders exceed typical monsoon discharges. Exposure dating shows that a cluster of these boulders was emplaced ca. 5 kyr ago. This period is coeval with a weakening of the Indian monsoon and glacier retreat in the area. We, therefore, suggest that glacier lake outburst floods are likely mechanisms that can explain these exceptional transport processes.
Ingo Hartmeyer, Markus Keuschnig, Robert Delleske, Michael Krautblatter, Andreas Lang, Lothar Schrott, Günther Prasicek, and Jan-Christoph Otto
Earth Surf. Dynam., 8, 753–768, https://doi.org/10.5194/esurf-8-753-2020, https://doi.org/10.5194/esurf-8-753-2020, 2020
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Rockfall size and frequency in two deglaciating cirques in the Central Alps, Austria, is analysed based on 6-year rockwall monitoring with terrestrial lidar (2011–2017). The erosion rates derived from this dataset are very high due to a frequent occurrence of large rockfalls in freshly deglaciated areas. The results obtained are important for rockfall hazard assessments, as, in rockwalls affected by glacier retreat, historical rockfall patterns are not good predictors of future events.
Fritz Schlunegger, Romain Delunel, and Philippos Garefalakis
Earth Surf. Dynam., 8, 717–728, https://doi.org/10.5194/esurf-8-717-2020, https://doi.org/10.5194/esurf-8-717-2020, 2020
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We calculated the probability of sediment transport in coarse-grained mountainous streams in the Alps and the Andes where data on water discharge is available. We find a positive correlation between the predicted probability of sediment transport and the grain size sorting of the bed material. We suggest that besides sediment discharge, the bedload sorting exerts a significant influence on the mobility of sediment and thus on the stability of gravel bars in mountainous streams.
Daniel Peifer, Cristina Persano, Martin D. Hurst, Paul Bishop, and Derek Fabel
Earth Surf. Dynam. Discuss., https://doi.org/10.5194/esurf-2020-68, https://doi.org/10.5194/esurf-2020-68, 2020
Revised manuscript accepted for ESurf
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Plate tectonics drives the formation of mountain ranges. Yet when tectonic forces cease, mountain ranges persist for hundreds of millions of years, forming major Earth surface features. Our contribution presents denudation rate estimates from one such ancient mountain range that show that denudation is strongly tied to rock type. Resistant rocks are denuding more slowly despite having much steeper topography and contrasts in rock type cause increasing relief in the absence of active tectonics.
Jagriti Mishra and Takuya Inoue
Earth Surf. Dynam., 8, 695–716, https://doi.org/10.5194/esurf-8-695-2020, https://doi.org/10.5194/esurf-8-695-2020, 2020
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This study provides an extensive review of field- and laboratory-scale studies and mathematical models used for predicting the sediment processes in bedrock river channels. We tested the model capabilities by reproducing and comparing the results with laboratory-scale experiments. This study provides an insight into the strengths and shortcomings of various available models.
Tyler H. Doane, Jon D. Pelletier, and Mary H. Nichols
Earth Surf. Dynam. Discuss., https://doi.org/10.5194/esurf-2020-63, https://doi.org/10.5194/esurf-2020-63, 2020
Revised manuscript under review for ESurf
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This paper explores how the geometry of rill networks contributes to observed nonlinear relationships between soil loss and hillslope length. This work develops probability functions of geometrical quantities of the networks and then extends the theory to hydraulic variables by relying on well-known relationships. Theory is complemented by numerical modeling on numerical and natural surfaces. Results suggest that the particular arrangement of rill networks contributes to nonlinear relationships.
Thomas O. Hoffmann, Yannik Baulig, Helmut Fischer, and Jan Blöthe
Earth Surf. Dynam., 8, 661–678, https://doi.org/10.5194/esurf-8-661-2020, https://doi.org/10.5194/esurf-8-661-2020, 2020
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We study the dynamics of suspended matter and associated nutrients in large rivers in Germany. The relationship between suspended sediment concentration and discharge is diagnostic of the processes and sources of suspended matter. We show that suspended matter originates from organic growth within the river at low flow and from soil erosion at high flow. In a warmer climate with increased frequency of droughts, low flow states are likely to be more prolonged, affecting the behavior of rivers.
Giulia Battista, Peter Molnar, and Paolo Burlando
Earth Surf. Dynam., 8, 619–635, https://doi.org/10.5194/esurf-8-619-2020, https://doi.org/10.5194/esurf-8-619-2020, 2020
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Suspended sediment load in rivers is highly uncertain because of spatial and temporal variability. By means of a hydrology and suspended sediment transport model, we investigated the effect of spatial variability in precipitation and surface erodibility on catchment sediment fluxes in a mesoscale river basin.
We found that sediment load depends on the spatial variability in erosion drivers, as this affects erosion rates and the location and connectivity to the channel of the erosion areas.
Clare Wilkinson, Daniel C. H. Hikuroa, Angus H. Macfarlane, and Matthew W. Hughes
Earth Surf. Dynam., 8, 595–618, https://doi.org/10.5194/esurf-8-595-2020, https://doi.org/10.5194/esurf-8-595-2020, 2020
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This review highlights potential contributions that Indigenous knowledge can make to geomorphic research. We evaluate several frameworks and models for including Indigenous knowledge in geomorphic research and discuss how they can be adapted for use with Indigenous communities across the world. We propose that weaving Indigenous knowledge with geomorphic science has the potential to create new solutions and understandings that neither body of knowledge could produce in isolation.
Oliver R. Francis, Tristram C. Hales, Daniel E. J. Hobley, Xuanmei Fan, Alexander J. Horton, Gianvito Scaringi, and Runqiu Huang
Earth Surf. Dynam., 8, 579–593, https://doi.org/10.5194/esurf-8-579-2020, https://doi.org/10.5194/esurf-8-579-2020, 2020
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Large earthquakes can build mountains by uplifting bedrock, but they also erode them by triggering large volumes of coseismic landsliding. Using a zero-dimensional numerical model, we identify that the storage of sediment produced by earthquakes can affect surface uplift and exhumation rates across the mountain range. However, the storage also reduces the time span at which the impact of the earthquake can be measured, preventing the recognition of single earthquakes in many long-term records.
Alexander R. Groos, Janik Niederhauser, Luise Wraase, Falk Hänsel, Thomas Nauss, Naki Akçar, and Heinz Veit
Earth Surf. Dynam. Discuss., https://doi.org/10.5194/esurf-2020-53, https://doi.org/10.5194/esurf-2020-53, 2020
Revised manuscript accepted for ESurf
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The magnitude of cooling in tropical high mountains during the last glacial period is controversially debated. Here, we report on enigmatic large sorted stone polygons and stripes from the ~ 4000 m high Sanetti Plateau in Ethiopia. Geomorphological features of that size are associated with seasonal or permanent frost and have yet only been described for few locations in the mid and high latitudes. The presence of these features implies a strong tropical cooling at high elevations in the past.
Maxime Mouyen, Philippe Steer, Kuo-Jen Chang, Nicolas Le Moigne, Cheinway Hwang, Wen-Chi Hsieh, Louise Jeandet, Laurent Longuevergne, Ching-Chung Cheng, Jean-Paul Boy, and Frédéric Masson
Earth Surf. Dynam., 8, 555–577, https://doi.org/10.5194/esurf-8-555-2020, https://doi.org/10.5194/esurf-8-555-2020, 2020
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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.
Jon D. Pelletier
Earth Surf. Dynam. Discuss., https://doi.org/10.5194/esurf-2020-44, https://doi.org/10.5194/esurf-2020-44, 2020
Revised manuscript accepted for ESurf
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The sizes and shapes of alluvial channels vary in a systematic way with the water flow they must convey during large floods. It is demonstrated that the depth of alluvial channels is controlled by the resistance of channel bank material to slumping which in turn is controlled by clay content. Deeper channels have faster water flow in a manner controlled by a critical hydraulic state to which channels tend to evolve. Channel width and slope can be further quantified using conservation principles.
Timothée Jautzy, Pierre-Alexis Herrault, Valentin Chardon, Laurent Schmitt, and Gilles Rixhon
Earth Surf. Dynam., 8, 471–484, https://doi.org/10.5194/esurf-8-471-2020, https://doi.org/10.5194/esurf-8-471-2020, 2020
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Remote sensing is widely used to document historical fluvial dynamics. However, the geometric error affecting the inferred planform changes can result in undesired geomorphological misinterpretation. Here, we present a novel approach to quantify the uncertainty associated with eroded/deposited surfaces. Concluding that this uncertainty depends on the magnitude and the shape of the surficial changes, restoration programs targeting lateral mobility of streams can benefit from our approach.
Jan de Leeuw, Michael P. Lamb, Gary Parker, Andrew J. Moodie, Daniel Haught, Jeremy G. Venditti, and Jeffrey A. Nittrouer
Earth Surf. Dynam., 8, 485–504, https://doi.org/10.5194/esurf-8-485-2020, https://doi.org/10.5194/esurf-8-485-2020, 2020
Arya P. Iwantoro, Maarten van der Vegt, and Maarten G. Kleinhans
Earth Surf. Dynam., 8, 413–429, https://doi.org/10.5194/esurf-8-413-2020, https://doi.org/10.5194/esurf-8-413-2020, 2020
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We investigated the effect of tides on the morphodynamic evolution of bifurcations in tide-influenced deltas. Using results from a numerical morphodynamic model (Delft3D), we found that tides cause less asymmetric bifurcations and thereby keep both downstream channels open. Our results explain why avulsion rarely occurs in tide-influenced deltas, whereas it occurs more often in river-dominated deltas.
Katherine R. Barnhart, Eric W. H. Hutton, Gregory E. Tucker, Nicole M. Gasparini, Erkan Istanbulluoglu, Daniel E. J. Hobley, Nathan J. Lyons, Margaux Mouchene, Sai Siddhartha Nudurupati, Jordan M. Adams, and Christina Bandaragoda
Earth Surf. Dynam., 8, 379–397, https://doi.org/10.5194/esurf-8-379-2020, https://doi.org/10.5194/esurf-8-379-2020, 2020
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Landlab is a Python package to support the creation of numerical models in Earth surface dynamics. Since the release of the 1.0 version in 2017, Landlab has grown and evolved: it contains 31 new process components, a refactored model grid, and additional utilities. This contribution describes the new elements of Landlab, discusses why certain backward-compatiblity-breaking changes were made, and reflects on the process of community open-source software development.
Velio Coviello, Lucia Capra, Gianluca Norini, Norma Dávila, Dolores Ferrés, Víctor Hugo Márquez-Ramirez, and Eduard Pico
Earth Surf. Dynam. Discuss., https://doi.org/10.5194/esurf-2020-36, https://doi.org/10.5194/esurf-2020-36, 2020
Revised manuscript under review for ESurf
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The Puebla-Morelos earthquake (19 September 2017) was the most damaging event in central Mexico since 1985. The seismic shaking produced hundreds of shallow landslides on the slopes of Popocatépetl volcano. The larger landslides transformed into large flows of sediment and water that travelled for kilometres. We describe this dramatic mass-wasting cascade and its predisposing factors, which have important implications for both the evolution of the volcanic edifices and for hazard assessment.
Filipe Galiforni-Silva, Kathelijne M. Wijnberg, and Suzanne J. M. H. Hulscher
Earth Surf. Dynam., 8, 335–350, https://doi.org/10.5194/esurf-8-335-2020, https://doi.org/10.5194/esurf-8-335-2020, 2020
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Storm surges are often related to coastal dune erosion. We found that, for specific coastal settings, storm surges may enhance dune growth rather than only undermine it. Using a computer model and elevation data, we noticed that storm surges could deposit sand onto the sand flat from sand previously deposited closer to the sea. As they move to areas farther from the sea, it becomes easier for the wind to move this sand to the dunes. These findings may help coastal managers and policymakers.
Giovanni Coco, Daniel Calvete, Francesca Ribas, Huib E. de Swart, and Albert Falqués
Earth Surf. Dynam., 8, 323–334, https://doi.org/10.5194/esurf-8-323-2020, https://doi.org/10.5194/esurf-8-323-2020, 2020
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Sandbars are ubiquitous features of the surf zone. They are rarely straight and often develop crescentic shapes. Double sandbar systems are also common, but the possibility of feedback between inner and outer sandbars has not been fully explored. The presence of double sandbar systems affects wave transformation and can result in a variety of spatial patterns. Here we model the conditions, waves and initial bathymetry that lead to the emergence of different patterns.
Léo Szewczyk, Jean-Louis Grimaud, and Isabelle Cojan
Earth Surf. Dynam., 8, 275–288, https://doi.org/10.5194/esurf-8-275-2020, https://doi.org/10.5194/esurf-8-275-2020, 2020
Dana Ariel Lapides and Michael Manga
Earth Surf. Dynam., 8, 195–210, https://doi.org/10.5194/esurf-8-195-2020, https://doi.org/10.5194/esurf-8-195-2020, 2020
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Spring-fed streams throughout volcanic regions of the western United States are wider than runoff-fed streams with similar flow levels. We used high-resolution satellite imagery in combination with flow and climate data to examine the relationship between wood loading and stream width in 38 spring-fed and 20 runoff-fed streams. This study identifies distinct wood dynamics in spring-fed and runoff-fed streams and a strong correlation between stream width and wood length in spring-fed streams.
Alison R. Duvall, Sarah A. Harbert, Phaedra Upton, Gregory E. Tucker, Rebecca M. Flowers, and Camille Collett
Earth Surf. Dynam., 8, 177–194, https://doi.org/10.5194/esurf-8-177-2020, https://doi.org/10.5194/esurf-8-177-2020, 2020
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In this study, we examine river patterns and the evolution of the landscape within the Marlborough Fault System, South Island, New Zealand, where the Australian and Pacific tectonic plates collide. We find that faulting, uplift, river capture and the long-lived nature of the drainage network all dictate river patterns at this site. Based on these results and a wealth of previous geologic studies, we propose two broad stages of landscape evolution over the last 25 million years of orogenesis.
Kate C. P. Leary and Daniel Buscombe
Earth Surf. Dynam., 8, 161–172, https://doi.org/10.5194/esurf-8-161-2020, https://doi.org/10.5194/esurf-8-161-2020, 2020
Jens Martin Turowski
Earth Surf. Dynam., 8, 103–122, https://doi.org/10.5194/esurf-8-103-2020, https://doi.org/10.5194/esurf-8-103-2020, 2020
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Bedrock channels are the conveyor belts of mountain regions, evacuating sediment produced by erosion. Bedrock channel morphology and dynamics affect sediment transport rates and local erosion and set the base level for hillslope response. Here, using mechanistic considerations of the processes of fluvial erosion and transport, and considerations of the mass balance of sediment and bedrock, I discuss the principles governing steady-state channel morphology and the dynamic paths to achieve it.
Jon Schwenk, Anastasia Piliouras, and Joel C. Rowland
Earth Surf. Dynam., 8, 87–102, https://doi.org/10.5194/esurf-8-87-2020, https://doi.org/10.5194/esurf-8-87-2020, 2020
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Standing on a riverbank, it is usually obvious which direction the river flows. However, when observing a river from space, we cannot see the flowing water and must use other clues to determine flow directions. For complicated river channel networks like those of deltas and braided rivers, determining the flow direction of each channel within the network is not trivial. We present and demonstrate a method to automatically determine flow directions for each link in aerially viewed river channels.
William H. Booker and Brett C. Eaton
Earth Surf. Dynam., 8, 51–67, https://doi.org/10.5194/esurf-8-51-2020, https://doi.org/10.5194/esurf-8-51-2020, 2020
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Using experiments, we found that the form and behaviour of a river depends on its ability to move the larger of its constituents. The manner in which all particles move depends upon the rate and calibre of the supplied material, as well as the rate of supplied water. This goes against the prevailing theory of a single important and representative grain size under depositing conditions, and these results may alter how we interpret river deposits to explain their formation.
Eli D. Lazarus, Kirstin L. Davenport, and Ana Matias
Earth Surf. Dynam., 8, 37–50, https://doi.org/10.5194/esurf-8-37-2020, https://doi.org/10.5194/esurf-8-37-2020, 2020
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Scaling relationships mathematically describe how two geometric traits of a geomorphic feature change relative to each other in a systematic way (how length changes with area in drainage basins and sedimentary deposits, for example). Here we demonstrate the emergence of scaling relationships in coastal overwash morphology. These findings may help to predict overwash deposition and offer insight into how spatial patterns in overwash morphology may self-organise.
Martin Jakobsson, Matt O'Regan, Carl-Magnus Mörth, Christian Stranne, Elizabeth Weidner, Jim Hansson, Richard Gyllencreutz, Christoph Humborg, Tina Elfwing, Alf Norkko, Joanna Norkko, Björn Nilsson, and Arne Sjöström
Earth Surf. Dynam., 8, 1–15, https://doi.org/10.5194/esurf-8-1-2020, https://doi.org/10.5194/esurf-8-1-2020, 2020
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We studied coastal sea floor terraces in parts of the Baltic Sea using various types of sonar data, sediment cores, and video. Terraces (~1 m high, > 100 m long) are widespread in depths < 15 m and are formed in glacial clay. Our study supports an origin from groundwater flow through silty layers, undermining overlying layers when discharged at the sea floor. Submarine groundwater discharge like this may be a significant source of freshwater to the Baltic Sea that needs to be studied further.
Timothée Sassolas-Serrayet, Rodolphe Cattin, Matthieu Ferry, Vincent Godard, and Martine Simoes
Earth Surf. Dynam., 7, 1041–1057, https://doi.org/10.5194/esurf-7-1041-2019, https://doi.org/10.5194/esurf-7-1041-2019, 2019
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The topographic steady-state assumption is often used in geomorphology. However, recent studies suggest that a drainage network is more mobile than previously thought. Using landscape evolution models, we show that those migrations have a significant impact on basin-wide denudation rates even if an overall topographic steady state is achieved at large scale. Our approach provides new tools to derive minimal uncertainties in basin-scale denudation rates due to this topographic disequilibrium.
Florence Magnin, Bernd Etzelmüller, Sebastian Westermann, Ketil Isaksen, Paula Hilger, and Reginald L. Hermanns
Earth Surf. Dynam., 7, 1019–1040, https://doi.org/10.5194/esurf-7-1019-2019, https://doi.org/10.5194/esurf-7-1019-2019, 2019
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This study proposes the first permafrost (i.e. ground with temperature permanently < 0 °C) map covering the steep rock slopes of Norway. It was created by using rock temperature data collected at the near surface of 25 rock walls spread across the country between 2010 and 2018. The map shows that permafrost mostly exists above 1300–1400 m a.s.l. in southern Norway and close to sea level in northern Norway. The results have strong potential for the study of rock wall sliding and failure.
Michele Delchiaro, Marta Della Seta, Salvatore Martino, Maryam Dehbozorgi, and Reza Nozaem
Earth Surf. Dynam., 7, 929–947, https://doi.org/10.5194/esurf-7-929-2019, https://doi.org/10.5194/esurf-7-929-2019, 2019
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This study provides insights into the causes and effects of the largest landslide and related damming that occurred on the emerged Earth surface. Understanding the hazard conditions is important for refining risk mitigation strategies for extreme landslide scenarios. We mapped and dated lacustrine and fluvial terrace sediments constraining the evolutionary model of the valley, thus providing the basis for future studies on the possible seismic trigger for such an extreme case study.
Roberto Fernández, Gary Parker, and Colin P. Stark
Earth Surf. Dynam., 7, 949–968, https://doi.org/10.5194/esurf-7-949-2019, https://doi.org/10.5194/esurf-7-949-2019, 2019
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This paper describes the case of a meandering bedrock river with loose sediment on the bed. In such rivers, the sediment hits and erodes the bed as it moves with the flow. We did experiments in a laboratory flume to identify the areas where the sediment moves and those where it deposits. We discovered that the size and location of those areas change with the amount of sediment in the channel and its curvature. The fluctuations of sediment cover over the bed drive the erosion potential.
Cited articles
Aalto, R., Dunne, T., and Guyot, J. L.: Geomorphic Controls on Andean
Denudation Rates, J. Geol., 114, 85–99, https://doi.org/10.1086/498101, 2006.
Abbühl, L. M., Norton, K. P., Jansen, J. D., Schlunegger, F., Aldahan,
A., and Possnert, G.: Erosion rates and mechanisms of knickzone retreat
inferred from 10Be measured across strong climate gradients on the northern
and central Andes Western Escarpment, Earth Surf. Proc. Land.,
36, 1464–1473, https://doi.org/10.1002/esp.2164, 2011.
Alcamo, J., Döll, P., Henrichs, T., Kaspar, F., Lehner, B., Rösch,
T., and Siebert, S.: Development and testing of the WaterGAP 2 global model
of water use and availability, Hydrolog. Sci. J., 48, 317–337,
https://doi.org/10.1623/hysj.48.3.317.45290, 2003.
Anderson, R. S.: Evolution of the Santa Cruz Mountains, California, through
tectonic growth and geomorphic decay, J. Geophys. Res., 99,
20161–20179, https://doi.org/10.1029/94JB00713, 1994.
Armitage, J. J., Whittaker, A. C., Zakari, M., and Campforts, B.: Numerical modelling of landscape and sediment flux response to precipitation rate change, Earth Surf. Dynam., 6, 77–99, https://doi.org/10.5194/esurf-6-77-2018, 2018.
Attal, M. and Lavé, J.: Pebble abrasion during fluvial transport:
Experimental results and implications for the evolution of the sediment load
along rivers, J. Geophys. Res., 114, F04023, https://doi.org/10.1029/2009JF001328,
2009.
Basabe, P.: Geologia Y Geotecnia, in Prevencion de Desastres Naturales en
la Cuenca del Paute, Informe Final: Projecto PreCuPa. Swiss Disaster Relief
Unit (SDR/CSS), Cuenca, Ecuador, 1–153, 1998.
Beck, H. E., van Dijk, A. I. J. M., de Roo, A., Dutra, E., Fink, G., Orth, R., and Schellekens, J.: Global evaluation of runoff from 10 state-of-the-art hydrological models, Hydrol. Earth Syst. Sci., 21, 2881–2903, https://doi.org/10.5194/hess-21-2881-2017, 2017.
Bendix, J., Rollenbeck, R., Göttlicher, D., and Cermak, J.: Cloud
occurrence and cloud properties in Ecuador, Clim. Res., 30, 133–147,
https://doi.org/10.3354/cr030133, 2006.
Bernhardt, A., Schwanghart, W., Hebbeln, D., Stuut, J.-B. W., and Strecker,
M. R.: Immediate propagation of deglacial environmental change to
deep-marine turbidite systems along the Chile convergent margin, Earth
Planet. Sc. Lett., 473, 190–204, https://doi.org/10.1016/j.epsl.2017.05.017, 2017.
Bishop, P., Hoey, T. B., Jansen, J. D., and Artza, I. L.: Knickpoint
recession rate and catchment area: the case of uplifted rivers in Eastern
Scotland, Earth Surf. Proc. Land., 778, 767–778,
https://doi.org/10.1002/esp.1191, 2005.
Blöthe, J. H., Korup, O., and Schwanghart, W.: Large landslides lie low:
Excess topography in the Himalaya-Karakoram ranges, Geology, 43,
523–526, https://doi.org/10.1130/G36527.1, 2015.
Brocard, G. Y. and van der Beek, P. A.: Influence of incision rate, rock
strength, and bedload supply on bedrock river gradients and valley-flat
widths: Field-based evidence and calibrations from western Alpine rivers
(southeast France), in Special Paper 398: Tectonics, Climate, and Landscape
Evolution, 2398, 101–126, Geological Society of America, 2006.
Broeckx, J., Rossi, M., Lijnen, K., Campforts, B., Poesen, J., and
Vanmaercke, M.: Landslide mobilization rates: A global analysis and model,
Earth-Sci. Rev., 201, 102972, https://doi.org/10.1016/j.earscirev.2019.102972, 2020.
Burbank, D. W., Leland, J., Fielding, E., Anderson, R. S., Brozovic, N.,
Reid, M. R., and Duncan, C.: Bedrock incision, rock uplift and threshold
hillslopes in the northwestern Himalayas, Nature, 379, 505–510,
https://doi.org/10.1038/379505a0, 1996.
Campetella, C. M. and Vera, C. S.: The influence of the Andes mountains on
the South American low-level flow, Geophys. Res. Lett., 29, 7-1–7-4,
https://doi.org/10.1029/2002GL015451, 2002.
Campforts, B. and Govers, G.: Keeping the edge: A numerical method that
avoids knickpoint smearing when solving the stream power law, J. Geophys.
Res.-Earth, 120, 1189–1205, https://doi.org/10.1002/2014JF003376, 2015.
Campforts, B., Vanacker, V., Vanderborght, J., Baken, S., Smolders, E., and
Govers, G.: Simulating the mobility of meteoric 10 Be in the landscape
through a coupled soil-hillslope model (Be2D), Earth Planet. Sc. Lett.,
439, 143–157, https://doi.org/10.1016/j.epsl.2016.01.017, 2016.
Campforts, B., Schwanghart, W., and Govers, G.: Accurate simulation of transient landscape evolution by eliminating numerical diffusion: the TTLEM 1.0 model, Earth Surf. Dynam., 5, 47–66, https://doi.org/10.5194/esurf-5-47-2017, 2017.
Carretier, S., Tolorza, V., Regard, V., Aguilar, G., Bermúdez, M. A.,
Martinod, J., Guyot, J. L., Hérail, G., and Riquelme, R.: Review of
erosion dynamics along the major N-S climatic gradient in Chile and
perspectives, Geomorphology, 300, 45–68,
https://doi.org/10.1016/j.geomorph.2017.10.016, 2018.
Castelltort, S., Goren, L., Willett, S. D., Champagnac, J. D., Herman, F., and Braun, J.: River drainage patterns in the New Zealand Alps primarily
controlled by plate tectonic strain, Nat. Geosci., 5, 744–748,
https://doi.org/10.1038/ngeo1582, 2012.
Celleri, R., Willems, P., Buytaert, W., and Feyen, J.: Space–time rainfall
variability in the Paute basin, Ecuadorian Andes, Hydrol. Process., 21,
3316–3327, https://doi.org/10.1002/hyp.6575, 2007.
Codilean, A. T., Munack, H., Cohen, T. J., Saktura, W. M., Gray, A., and Mudd, S. M.: OCTOPUS: an open cosmogenic isotope and luminescence database, Earth Syst. Sci. Data, 10, 2123–2139, https://doi.org/10.5194/essd-10-2123-2018, 2018.
Coulthard, T. J. and Van de Wiel, M. J.: Climate, tectonics or morphology: what signals can we see in drainage basin sediment yields?, Earth Surf. Dynam., 1, 13–27, https://doi.org/10.5194/esurf-1-13-2013, 2013.
Crave, A. and Davy, P.: A stochastic “precipiton” model for simulating
erosion/sedimentation dynamics, Comput. Geosci., 27, 815–827,
https://doi.org/10.1016/S0098-3004(00)00167-9, 2001.
Croissant, T. and Braun, J.: Constraining the stream power law: a novel approach combining a landscape evolution model and an inversion method, Earth Surf. Dynam., 2, 155–166, https://doi.org/10.5194/esurf-2-155-2014, 2014.
Cyr, A. J., Granger, D. E., Olivetti, V., and Molin, P.: Quantifying rock
uplift rates using channel steepness and cosmogenic nuclide–determined
erosion rates: Examples from northern and southern Italy, Lithosphere, 2,
188–198, https://doi.org/10.1130/L96.1, 2010.
Deal, E., Braun, J., and Botter, G.: Understanding the Role of Rainfall and
Hydrology in Determining Fluvial Erosion Efficiency, J. Geophys. Res.-Earth, 123, 744–778, https://doi.org/10.1002/2017JF004393, 2018.
DiBiase, R. A. and Whipple, K. X.: The influence of erosion thresholds and
runoff variability on the relationships among topography, climate, and
erosion rate, J. Geophys. Res., 116, F04036, https://doi.org/10.1029/2011JF002095,
2011.
DiBiase, R. A., Whipple, K. X., Heimsath, A. M., and Ouimet, W. B.: Landscape
form and millennial erosion rates in the San Gabriel Mountains, CA, Earth
Planet. Sc. Lett., 289, 134–144, https://doi.org/10.1016/j.epsl.2009.10.036,
2010.
Döll, P., Kaspar, F., and Lehner, B.: A global hydrological model for
deriving water availability indicators: model tuning and validation, J.
Hydrol., 270, 105–134, https://doi.org/10.1016/S0022-1694(02)00283-4, 2003.
Dunai, T. J.: Scaling factors for production rates of in situ produced
cosmogenic nuclides: a critical reevaluation, Earth Planet. Sc. Lett.,
176, 157–169, https://doi.org/10.1016/S0012-821X(99)00310-6, 2000.
Egüez, A., Gaona, M., and Albán., A.: Mapa geológico de la
República del Ecuador, Escala 1:1.000.000, Quito, 2017.
Farr, T. G., Rosen, P. A., Caro, E., Crippen, R., Duren, R., Hensley, S.,
Kobrick, M., Paller, M., Rodriguez, E., Roth, L., Seal, D., Shaffer, S.,
Shimada, J., Umland, J., Werner, M., Oskin, M., Burbank, D., and Alsdorf, D.:
The Shuttle Radar Topography Mission, Rev. Geophys., 45, RG2004,
https://doi.org/10.1029/2005RG000183, 2007.
Ferrier, K. L., Huppert, K. L., and Perron, J. T.: Climatic control of
bedrock river incision, Nature, 496, 206–209,
https://doi.org/10.1038/nature11982, 2013.
Finnegan, N. J., Hallet, B., Montgomery, D. R., Zeitler, P. K., Stone, J.
O., Anders, A. M., and Yuping, L.: Coupling of rock uplift and river incision
in the Namche Barwa-Gyala Peri massif, Tibet, Geol. Soc. Am. Bull.,
120, 142–155, https://doi.org/10.1130/B26224.1, 2008.
Fisher, G. B., Amos, C. B., Bookhagen, B., Burbank, D. W., and Godard, V.:
Channel widths, landslides, faults, and beyond: The new world order of
high-spatial resolution Google Earth imagery in the study of earth surface
processes, in: Google Earth and Virtual Visualizations in Geoscience
Education and Research, Geological Society of America, 2012.
Fisher, G. B., Bookhagen, B., and Amos, C. B.: Channel planform geometry and
slopes from freely available high-spatial resolution imagery and DEM fusion:
Implications for channel width scalings, erosion proxies, and fluvial
signatures in tectonically active landscapes, Geomorphology, 194, 46–56,
https://doi.org/10.1016/j.geomorph.2013.04.011, 2013.
Garcia-Castellanos, D. and Jiménez-Munt, I.: Topographic Evolution and
Climate Aridification during Continental Collision: Insights from Computer
Simulations, edited by: N. Houlie, PLoS One, 10, e0132252,
https://doi.org/10.1371/journal.pone.0132252, 2015.
Gasparini, N. M. and Whipple, K. X.: Diagnosing climatic and tectonic
controls on topography: Eastern flank of the northern Bolivian Andes,
Lithosphere, 6, 230–250, https://doi.org/10.1130/L322.1, 2014.
Goren, L.: A theoretical model for fluvial channel response time during
time-dependent climatic and tectonic forcing and its inverse applications,
Geophys. Res. Lett., 43, 10753–10763, https://doi.org/10.1002/2016GL070451, 2016.
Goren, L., Fox, M., and Willett, S. D.: Tectonics from fluvial topography
using formal linear inversion: Theory and applications to the Inyo
Mountains, California, J. Geophys. Res.-Earth, 119, 1651–1681,
https://doi.org/10.1002/2014JF003079, 2014.
Guns, M. and Vanacker, V.: Forest cover change trajectories and their impact
on landslide occurrence in the tropical Andes, Environ. Earth Sci., 70,
2941–2952, https://doi.org/10.1007/s12665-013-2352-9, 2013.
Guns, M. and Vanacker, V.: Shifts in landslide frequency-area distribution
after forest conversion in the tropical Andes, Anthropocene, 6, 75–85,
https://doi.org/10.1016/j.ancene.2014.08.001, 2014.
Harel, M. M.-A., Mudd, S. M., and Attal, M.: Global analysis of the stream
power law parameters based on worldwide 10 Be denudation rates,
Geomorphology, 268, 184–196, https://doi.org/10.1016/j.geomorph.2016.05.035, 2016.
Hay, W. W., Sloan Ii, J. L., and Wold, C. N.: Mass/Age Distribution and
Composition of Sediments on the Ocean Floor and the Global Rate of Sediment
Subduction, J. Geophys. Res., 93940, 933–14,
https://doi.org/10.1029/JB093iB12p14933, 1988.
Herman, F., Beyssac, O., Brughelli, M., Lane, S. N., Leprince, S., Adatte,
T., Lin, J. Y. Y., Avouac, J.-P., and Cox, S. C.: Erosion by an Alpine
glacier, Science, 350, 193–195, https://doi.org/10.1126/science.aab2386, 2015.
Hobley, D. E. J., Adams, J. M., Nudurupati, S. S., Hutton, E. W. H., Gasparini, N. M., Istanbulluoglu, E., and Tucker, G. E.: Creative computing with Landlab: an open-source toolkit for building, coupling, and exploring two-dimensional numerical models of Earth-surface dynamics, Earth Surf. Dynam., 5, 21–46, https://doi.org/10.5194/esurf-5-21-2017, 2017.
Horton, B. K.: Sedimentary record of Andean mountain building, Earth-Sci.
Rev., 178, 279–309, https://doi.org/10.1016/j.earscirev.2017.11.025,
2018.
Howard, A. D.: A detachment limited model of drainage basin evolution, Water
Resour. Res., 30, 2261–2285, https://doi.org/10.1029/94WR00757, 1994.
Hungerbühler, D., Steinmann, M., Winkler, W., Seward, D., Egüez, A.,
Peterson, D. E., Helg, U., and Hammer, C.: Neogene stratigraphy and Andean
geodynamics of southern Ecuador, Earth-Sci. Rev., 57, 75–124,
https://doi.org/10.1016/S0012-8252(01)00071-X, 2002.
Hurst, M. D., Mudd, S. M., Walcott, R., Attal, M., and Yoo, K.: Using hilltop
curvature to derive the spatial distribution of erosion rates, J. Geophys.
Res.-Earth, 117, F02017, https://doi.org/10.1029/2011JF002057, 2012.
INAMHI – Instituto Nacional de Meteorología e Hidrología: Ecuadorian national meteorological service, Anuario Meteorológico [Annual reports from 1990–2013], available at: http://www.serviciometeorologico.gob.ec/biblioteca/, last access: 19 May 2020.
Jelinski, N. A., Campforts, B., Willenbring, J. K., Schumacher, T. E., Li,
S., Lobb, D. A., Papiernik, S. K., and Yoo, K.: Meteoric Beryllium-10 as a
Tracer of Erosion Due to Postsettlement Land Use in West-Central Minnesota,
USA, J. Geophys. Res.-Earth, 124, 874–901,
https://doi.org/10.1029/2018JF004720, 2019.
Jerolmack, D. J. and Paola, C.: Shredding of environmental signals by
sediment transport, Geophys. Res. Lett., 37, 1–5,
https://doi.org/10.1029/2010GL044638, 2010.
Kirby, E. and Ouimet, W.: Tectonic geomorphology along the eastern margin of
Tibet: insights into the pattern and processes of active deformation
adjacent to the Sichuan Basin, Geol. Soc. Lond. Spec. Publ., 353, 165,
https://doi.org/10.1144/sp353.9, 2011.
Kirby, E. and Whipple, K. X.: Expression of active tectonics in erosional
landscapes, J. Struct. Geol., 44, 54–75, https://doi.org/10.1016/j.jsg.2012.07.009,
2012.
Kirchner, J. W., Finkel, R. C., Riebe, C. S., Granger, D. E., Clayton, J.
L., King, J. G., and Megahan, W. F.: Mountain erosion over 10 yr, 10 k.y.,
and 10 m.y. time scales, Geology, 29, 591,
https://doi.org/10.1130/0091-7613(2001)029<0591:MEOYKY>2.0.CO;2,
2001.
Kober, F., Ivy-Ochs, S., Schlunegger, F., Baur, H., Kubik, P. W., and Wieler,
R.: Denudation rates and a topography-driven rainfall threshold in northern
Chile: Multiple cosmogenic nuclide data and sediment yield budgets,
Geomorphology, 83, 97–120, https://doi.org/10.1016/j.geomorph.2006.06.029, 2007.
Kober, F., Zeilinger, G., Hippe, K., Marc, O., Lendzioch, T., Grischott, R.,
Christl, M., Kubik, P. W., and Zola, R.: Tectonic and lithological controls
on denudation rates in the central Bolivian Andes, Tectonophysics, 657,
230–244, https://doi.org/10.1016/j.tecto.2015.06.037, 2015.
Korup, O., Clague, J. J., Hermanns, R. L., Hewitt, K., Strom, A. L., and
Weidinger, J. T.: Giant landslides, topography, and erosion, Earth Planet.
Sci. Lett., 261, 578–589, https://doi.org/10.1016/j.epsl.2007.07.025, 2007.
Lague, D.: The stream power river incision model: evidence, theory and
beyond, Earth Surf. Proc. Land., 39, 38–61, https://doi.org/10.1002/esp.3462,
Lague, D., Hovius, N., and Davy, P.: Discharge, discharge variability, and
the bedrock channel profile, J. Geophys. Res.-Earth, 110,
https://doi.org/10.1029/2004JF000259, 2005.
Larsen, I. J., Montgomery, D. R., and Korup, O.: Landslide erosion controlled
by hillslope material, Nat. Geosci., 3, 247–251, https://doi.org/10.1038/ngeo776,
2010.
Lavé, J. and Avouac, J. P.: Fluvial incision and tectonic uplift across
the Himalayas of central Nepal, J. Geophys. Res.-Sol. Ea., 106,
26561–26591, https://doi.org/10.1029/2001JB000359, 2001.
Leopold, L. B. and Maddock, T.: The hydraulic geometry of stream channels
and some physiographic implications, US Government Printing Office, 1953.
Mandal, S. K., Lupker, M., Burg, J.-P., Valla, P. G., Haghipour, N., and
Christl, M.: Spatial variability of 10Be-derived erosion rates across the
southern Peninsular Indian escarpment: A key to landscape evolution across
passive margins, Earth Planet. Sc. Lett., 425, 154–167,
https://doi.org/10.1016/j.epsl.2015.05.050, 2015.
Manz, B., Buytaert, W., Zulkafli, Z., Lavado, W., Willems, B., Robles, L. A.,
and Rodríguez-Sánchez, J.-P.: High-resolution satellite-gauge
merged precipitation climatologies of the Tropical Andes, J. Geophys. Res.-Atmos., 121, 1190–1207, https://doi.org/10.1002/2015JD023788, 2016.
Meyer-Peter, E. and Müller, R.: Formulas for Bed-Load Transport, Proc.
Int. Assoc. Hydraul. Struct. Researach – Second Meet. Stock. Sweeden,
39–65, doi:1948-06-07, 1948.
Molina, A., Govers, G., Vanacker, V., Poesen, J., Zeelmaekers, E., and
Cisneros, F.: Runoff generation in a degraded Andean ecosystem: Interaction
of vegetation cover and land use, CATENA, 71, 357–370,
https://doi.org/10.1016/j.catena.2007.04.002, 2007.
Molnar, P., Anderson, R. S., Kier, G., and Rose, J.: Relationships among
probability distributions of stream discharges in floods, climate, bed load
transport, and river incision, J. Geophys. Res., 111, F02001,
https://doi.org/10.1029/2005JF000310, 2006.
Molnar, P., Anderson, R. S., and Anderson, S. P.: Tectonics, fracturing of
rock, and erosion, J. Geophys. Res., 112, F03014,
https://doi.org/10.1029/2005JF000433, 2007.
Montgomery, D. R. and Brandon, M. T.: Topographic controls on erosion rates
in tectonically active mountain ranges, Earth Planet. Sc. Lett., 201,
481–489, https://doi.org/10.1016/S0012-821X(02)00725-2, 2002.
Mora, D. E., Campozano, L., Cisneros, F., Wyseure, G., and Willems, P.: Climate changes of hydrometeorological and hydrological extremes in the Paute basin, Ecuadorean Andes, Hydrol. Earth Syst. Sci., 18, 631–648, https://doi.org/10.5194/hess-18-631-2014, 2014.
Nash, J. E. and Sutcliffe, J. V.: River flow forecasting through conceptual
models part I – A discussion of principles, J. Hydrol., 10, 282–290,
https://doi.org/10.1016/0022-1694(70)90255-6, 1970.
Nearing, M. A., Wei, H., Stone, J. J., Pierson, F. B., Spaeth, K. E., Weltz,
M. A., Flanagan, D. C., and Hernandez, M.: A Rangeland Hydrology and Erosion
Model, T. ASABE, 54, 901–908, https://doi.org/10.13031/2013.37115, 2011.
Nibourel, L., Herman, F., Cox, S. C., Beyssac, O., and Lavé, J.:
Provenance analysis using Raman spectroscopy of carbonaceous material: A
case study in the Southern Alps of New Zealand, J. Geophys. Res.-Earth, 120, 2056–2079, https://doi.org/10.1002/2015JF003541, 2015.
Norton, K. P. and Vanacker, V.: Effects of terrain smoothing on topographic
shielding correction factors for cosmogenic nuclide-derived estimates of
basin-averaged denudation rates, Earth Surf. Proc. Land., 34,
145–154, https://doi.org/10.1002/esp.1700, 2009.
Ouimet, W. B., Whipple, K. X., and Granger, D. E.: Beyond threshold
hillslopes: Channel adjustment to base-level fall in tectonically active
mountain ranges, Geology, 37, 579–582, https://doi.org/10.1130/G30013A.1, 2009.
Petersen, M. D., Harmsen, S. C., Jaiswal, K. S., Rukstales, K. S., Luco, N.,
Haller, K. M., Mueller, C. S., and Shumway, A. M.: Seismic Hazard, Risk, and
Design for South America, B. Seismol. Soc. Am., 108, 781–800,
https://doi.org/10.1785/0120170002, 2018.
Portenga, E. W. and Bierman, P. R.: Understanding Earth's eroding surface
with 10Be, GSA Today, 21, 4–10, https://doi.org/10.1130/G111A.1, 2011.
Reusser, L., Bierman, P., and Rood, D.: Quantifying human impacts on rates of
erosion and sediment transport at a landscape scale, Geology, 43,
171–174, https://doi.org/10.1130/G36272.1, 2015.
Riebe, C. S., Kirchner, J. W., Granger, D. E., and Finkel, R. C.: Strong
tectonic and weak climatic control of long-term chemical weathering rates,
Geology, 29, 511, https://doi.org/10.1130/0091-7613(2001)029<0511:STAWCC>2.0.CO;2, 2001.
Roberts, G. G. and White, N.: Estimating uplift rate histories from river
profiles using African examples, J. Geophys. Res., 115, B02406,
https://doi.org/10.1029/2009JB006692, 2010.
Roering, J. J., Kirchner, J. W., and Dietrich, W. E.: Evidence for nonlinear,
diffusive sediment transport on hillslopes and implications for landscape
morphology, Water Resour. Res., 35, 853–870, https://doi.org/10.1029/1998WR900090,
1999.
Romans, B. W., Castelltort, S., Covault, J. A., Fildani, A., and Walsh, J.
P.: Environmental signal propagation in sedimentary systems across
timescales, Earth-Sci. Rev., 153, 7–29,
https://doi.org/10.1016/j.earscirev.2015.07.012, 2016.
Royden, L. and Perron, J. T.: Solutions of the stream power equation and
application to the evolution of river longitudinal profiles, J. Geophys.
Res.-Earth, 118, 497–518, https://doi.org/10.1002/jgrf.20031, 2013.
Sadler, P. M.: Sediment Accumulation Rates and the Completeness of
Stratigraphic Sections, J. Geol., 89, 569–584, https://doi.org/10.1086/628623, 1981.
Safran, E. B., Bierman, P. R., Aalto, R., Dunne, T., Whipple, K. X., and
Caffee, M.: Erosion rates driven by channel network incision in the Bolivian
Andes, Earth Surf. Proc. Land., 30, 1007–1024,
https://doi.org/10.1002/esp.1259, 2005.
Schaller, M., von Blanckenburg, F., Hovius, N., and Kubik, P. W.: Large-scale
erosion rates from in situ-produced cosmogenic nuclides in European river
sediments, Earth Planet. Sc. Lett., 188, 441–458,
https://doi.org/10.1016/S0012-821X(01)00320-X, 2001.
Schaller, M., von Blanckenburg, F., Veldkamp, A., Tebbens, L. A., Hovius, N.
and Kubik, P. W.: A 30 000 yr record of erosion rates from cosmogenic 10Be
in Middle European river terraces, Earth Planet. Sc. Lett., 204,
307–320, https://doi.org/10.1016/S0012-821X(02)00951-2, 2002.
Schellekens, J., Dutra, E., Martínez-de la Torre, A., Balsamo, G., van Dijk, A., Sperna Weiland, F., Minvielle, M., Calvet, J.-C., Decharme, B., Eisner, S., Fink, G., Flörke, M., Peßenteiner, S., van Beek, R., Polcher, J., Beck, H., Orth, R., Calton, B., Burke, S., Dorigo, W., and Weedon, G. P.: A global water resources ensemble of hydrological models: the eartH2Observe Tier-1 dataset, Earth Syst. Sci. Data, 9, 389–413, https://doi.org/10.5194/essd-9-389-2017, 2017.
Scherler, D., Bookhagen, B., and Strecker, M. R.: Tectonic control on 10
Be-derived erosion rates in the Garhwal Himalaya, India, J. Geophys. Res.-Earth, 119, 83–105, https://doi.org/10.1002/2013JF002955, 2014.
Scherler, D., DiBiase, R. A., Fisher, G. B., and Avouac, J.-P.: Testing
monsoonal controls on bedrock river incision in the Himalaya and Eastern
Tibet with a stochastic-threshold stream power model, J. Geophys. Res.-Earth, 122, 1389–1429, https://doi.org/10.1002/2016JF004011, 2017.
Schmidt, K. M. and Montgomery, D. R.: Limits to Relief, Science,
270, 617–620, https://doi.org/10.1126/science.270.5236.617, 1995.
Schwanghart, W. and Scherler, D.: Short Communication: TopoToolbox 2 – MATLAB-based software for topographic analysis and modeling in Earth surface sciences, Earth Surf. Dynam., 2, 1–7, https://doi.org/10.5194/esurf-2-1-2014, 2014.
Schwanghart, W., Ryan, M., and Korup, O.: Topographic and Seismic Constraints
on the Vulnerability of Himalayan Hydropower, Geophys. Res. Lett., 45,
8985–8992, https://doi.org/10.1029/2018GL079173, 2018.
Shobe, C. M., Tucker, G. E., and Barnhart, K. R.: The SPACE 1.0 model: a Landlab component for 2-D calculation of sediment transport, bedrock erosion, and landscape evolution, Geosci. Model Dev., 10, 4577–4604, https://doi.org/10.5194/gmd-10-4577-2017, 2017.
Shobe, C. M., Tucker, G. E., and Rossi, M. W.: Variable-Threshold Behavior in
Rivers Arising From Hillslope-Derived Blocks, J. Geophys. Res.-Earth,
123, 1931–1957, https://doi.org/10.1029/2017JF004575, 2018.
Sklar, L. and Dietrich, W. E.: River longitudinal profiles and bedrock
incision models: Stream power and the influence of sediment supply,
237–260., 1998.
Snyder, N. P., Whipple, K. X., Tucker, G. E., and Merritts, D. J.: Landscape
response to tectonic forcing: Digital elevation model analysis of stream
profiles in the Mendocino triple junction region, northern California, Geol.
Soc. Am. Bull., 112, 1250–1263, https://doi.org/10.1130/0016-7606(2000)112<1250:LRTTFD>2.3.CO;2, 2000.
Snyder, N. P., Whipple, K. X., Tucker, G. E., and Merritts, D. J.: Importance
of a stochastic distribution of floods and erosion thresholds in the bedrock
river incision problem, J. Geophys. Res.-Sol. Ea., 108, 2388,
https://doi.org/10.1029/2001JB001655, 2003.
Sorensen, C. S. and Yanites, B. J.: Latitudinal trends in modern fluvial
erosional efficiency along the Andes, Geomorphology, 329, 170–183,
https://doi.org/10.1016/j.geomorph.2018.12.030, 2019.
Spikings, R., Winkler, W., Seward, D., and Handler, R.: Along-strike
variations in the thermal and tectonic response of the continental
Ecuadorian Andes to the collision with heterogeneous oceanic crust, Earth
Planet. Sc. Lett., 186, 57–73, https://doi.org/10.1016/S0012-821X(01)00225-4, 2001.
Spikings, R. A. and Crowhurst, P. V.: (U–Th) ∕ He thermochronometric
constraints on the late Miocene–Pliocene tectonic development of the
northern Cordillera Real and the Interandean Depression, Ecuador, J. South
Am. Earth Sci., 17, 239–251, https://doi.org/10.1016/j.jsames.2004.07.001, 2004.
Spikings, R. A., Crowhurst, P. V., Winkler, W., and Villagomez, D.: Syn- and
post-accretionary cooling history of the Ecuadorian Andes constrained by
their in-situ and detrital thermochronometric record, J. South Am. Earth
Sci., 30, 121–133, https://doi.org/10.1016/j.jsames.2010.04.002, 2010.
Steinmann, M., Hungerbühler, D., Seward, D., and Winkler, W.: Neogene
tectonic evolution and exhumation of the southern Ecuadorian Andes: a
combined stratigraphy and fission-track approach, Tectonophysics, 307,
255–276, https://doi.org/10.1016/S0040-1951(99)00100-6, 1999.
Stock, J. D. and Montgomery, D. R.: Geologic constraints on bedrock river
incision using the stream power law, J. Geophys. Res., 104, 4983,
https://doi.org/10.1029/98JB02139, 1999.
Tofelde, S., Duesing, W., Schildgen, T. F., Wickert, A. D., Wittmann, H.,
Alonso, R. N., and Strecker, M.: Effects of deep-seated versus shallow
hillslope processes on cosmogenic 10Be concentrations in fluvial sand
and gravel, Earth Surf. Proc. Land., 43, 3086–3098,
https://doi.org/10.1002/esp.4471, 2018.
Tucker, G. E.: Drainage basin sensitivity to tectonic and climatic forcing:
Implications of a stochastic model for the role of entrainment and erosion
thresholds, Earth Surf. Proc. Land., 29, 185–205,
https://doi.org/10.1002/esp.1020, 2004.
Tucker, G. E. and Bras, R. L.: A stochastic approach to modeling the role of
rainfall variability in drainage basin evolution, Water Resour. Res., 36,
1953–1964, https://doi.org/10.1029/2000WR900065, 2000.
Tucker, G. E. and Hancock, G. R.: Modelling landscape evolution, Earth Surf.
Proc. Land., 35, 28–50, https://doi.org/10.1002/esp.1952, 2010.
Vanacker, V., von Blanckenburg, F., Govers, G., Molina, A., Poesen, J.,
Deckers, J., and Kubik, P.: Restoring dense vegetation can slow mountain
erosion to near natural benchmark levels, Geology, 35, 303–306,
https://doi.org/10.1130/G23109A.1, 2007.
Vanacker, V., von Blanckenburg, F., Govers, G., Molina, A., Campforts, B., and Kubik, P. W.: Transient river response, captured by channel steepness
and its concavity, Geomorphology, 228, 234–243,
https://doi.org/10.1016/j.geomorph.2014.09.013, 2015.
Vanacker, V., Guns, M., Clapuyt, F., Balthazar, V., Tenorio, G., and Molina,
A.: Spatio-temporal patterns of landslides and erosion in tropical andean
catchments, Pirineos a J. Mt. Ecol.,75, https://doi.org/10.3989/pirineos.2020.175001, in press, 2020.
Venditti, J. G., Li, T., Deal, E., Dingle, E., and Church, M.: Struggles with
stream power: Connecting theory across scales, Geomorphology,
106817, https://doi.org/10.1016/j.geomorph.2019.07.004, in press, 2019.
Whipple, K. X.: Fluvial landscape response time: How plausible is
steady-state denudation?, Am. J. Sci., 301, 313–325, https://doi.org/10.2475/ajs.301.4-5.313, 2001.
Whipple, K. X. and Tucker, G. E.: Dynamics of the stream-power river
incision model: Implications for height limits of mountain ranges, landscape
response timescales, and research needs, J. Geophys. Res.-Sol. Ea.,
104, 17661–17674, https://doi.org/10.1029/1999JB900120, 1999.
Whipple, K. X., Kirby, E., and Brocklehurst, S. H.: Geomorphic limits to
climate-induced increases in topographic relief, Nature, 401, 39–43,
https://doi.org/10.1038/43375, 1999.
Whipple, K. X., Hancock, G. S., and Anderson, R. S.: River incision into
bedrock: Mechanics and relative efficacy of plucking, abrasion, and
cavitation, Geol. Soc. Am. Bull., 112, 490–503,
https://doi.org/10.1130/0016-7606(2000)112<490:RIIBMA>2.0.CO;2,
2000.
Whipple, K. X., DiBiase, R. A., and Crosby, B. T.: 9.28 Bedrock Rivers, in
Treatise on Geomorphology, vol. 9, edited by: Shroder, J. F.,
Elsevier, San Diego, 550–573, 2013.
Whittaker, A. C. and Boulton, S. J.: Tectonic and climatic controls on
knickpoint retreat rates and landscape response times, J. Geophys. Res., 117, F02024, https://doi.org/10.1029/2011JF002157, 2012.
Wobus, C., Whipple, K. X., Kirby, E., Snyder, N., Johnson, J., Spyropolou,
K., Crosby, B., and Sheehan, D.: Tectonics from topography: Procedures,
promise, and pitfalls, in Tectonics, Climate, and Landscape Evolution,
398, Geological Society of America, 55–74, 2006.
Yanites, B. J., Tucker, G. E., and Anderson, R. S.: Numerical and analytical
models of cosmogenic radionuclide dynamics in landslide-dominated drainage
basins, J. Geophys. Res., 114, F01007, https://doi.org/10.1029/2008JF001088, 2009.
Short summary
In this contribution, we explore the spatial determinants of bedrock river incision in the tropical Andes. The model results illustrate the problem of confounding between climatic and lithological variables, such as rock strength. Incorporating rock strength explicitly into river incision models strongly improves the explanatory power of all tested models and enables us to clarify the role of rainfall variability in controlling river incision rates.
In this contribution, we explore the spatial determinants of bedrock river incision in the...