Articles | Volume 6, issue 2
https://doi.org/10.5194/esurf-6-329-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/esurf-6-329-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
07 May 2018
Research article |
| 07 May 2018
| 07 May 2018
Tracking the 10Be–26Al source-area signal in sediment-routing systems of arid central Australia
School of Earth and Environmental Sciences, University of Wollongong, Wollongong 2522, Australia
John D. Jansen
Department of Geoscience, Aarhus University, 8000 Aarhus C, Denmark
Toshiyuki Fujioka
Australian Nuclear Science and Technology Organisation, Lucas Heights 2234, Australia
Alexandru T. Codilean
School of Earth and Environmental Sciences, University of Wollongong, Wollongong 2522, Australia
David Fink
Australian Nuclear Science and Technology Organisation, Lucas Heights 2234, Australia
Réka-Hajnalka Fülöp
School of Earth and Environmental Sciences, University of Wollongong, Wollongong 2522, Australia
Australian Nuclear Science and Technology Organisation, Lucas Heights 2234, Australia
Klaus M. Wilcken
Australian Nuclear Science and Technology Organisation, Lucas Heights 2234, Australia
David M. Price
School of Earth and Environmental Sciences, University of Wollongong, Wollongong 2522, Australia
Steven Kotevski
Australian Nuclear Science and Technology Organisation, Lucas Heights 2234, Australia
L. Keith Fifield
Research School of Earth Sciences, Australian National University, Canberra 0200, Australia
John Chappell
Research School of Earth Sciences, Australian National University, Canberra 0200, Australia
Related authors
No articles found.
Emma Rehn, Haidee Cadd, Scott Mooney, Tim J. Cohen, Henry Munack, Alexandru T. Codilean, Matthew Adeleye, Kristen K. Beck, Mark Constantine IV, Chris Gouramanis, Johanna M. Hanson, Penelope J. Jones, A. Peter Kershaw, Lydia Mackenzie, Maame Maisie, Michela Mariani, Kia Mately, David McWethy, Keely Mills, Patrick Moss, Nicholas R. Patton, Cassandra Rowe, Janelle Stevenson, John Tibby, and Janet Wilmshurst
Earth Syst. Sci. Data Discuss., https://doi.org/10.5194/essd-2024-328, https://doi.org/10.5194/essd-2024-328, 2024
Preprint under review for ESSD
Short summary
Short summary
This paper presents SahulCHAR, a new collection of palaeofire (ancient fire) records from Australia, New Guinea, and New Zealand. SahulCHAR Version 1 contains 687 records of sedimentary charcoal or black carbon, including digitized data, records from existing databases, and original author-submitted data. SahulCHAR is a much-needed update on past charcoal compilations that will also provide greater representation of records from this region in future global syntheses to understand past fire.
Jingjuan Li, John D. Jansen, Xuanmei Fan, Zhiyong Ding, Shugang Kang, and Marco Lovati
Earth Surf. Dynam., 12, 953–971, https://doi.org/10.5194/esurf-12-953-2024, https://doi.org/10.5194/esurf-12-953-2024, 2024
Short summary
Short summary
In this study, we investigated the geomorphology, sedimentology, and chronology of Tuanjie (seven terraces) and Taiping (three terraces) terraces in Diexi, eastern Tibetan Plateau. Results highlight that two damming and three outburst events occurred in the area during the late Pleistocene, and the outburst floods have been a major factor in the formation of tectonically active mountainous river terraces. Tectonic activity and climatic changes play a minor role.
Christopher Halsted, Paul Bierman, Alexandru Codilean, Lee Corbett, and Marc Caffee
Geochronology Discuss., https://doi.org/10.5194/gchron-2024-22, https://doi.org/10.5194/gchron-2024-22, 2024
Revised manuscript under review for GChron
Short summary
Short summary
Sediment generation on hillslopes and transport through river networks are complex processes that influence landscape evolution. In this study compiled sand from over 600 river basins and measured its (very subtle) radioactivity to unravel timelines of sediment routing around the world. With this data we empirically confirm that sediment from large lowland basins in tectonically stable regions typically experiences long periods of burial, while sediment moves rapidly through small upland basins.
Oswald Malcles, Philippe Vernant, David Fink, Gaël Cazes, Jean-François Ritz, Toshiyuki Fujioka, and Jean Chéry
Earth Surf. Dynam., 12, 679–690, https://doi.org/10.5194/esurf-12-679-2024, https://doi.org/10.5194/esurf-12-679-2024, 2024
Short summary
Short summary
In the Grands Causses area (Southern France), we study the relationship between the evolution of the river, its incision through time, and the location of the nearby caves. It is commonly accepted that horizontal caves are formed during a period of river stability (no incision) at the elevation of the river. Our original results show that it is wrong in our case study. Therefore, another model of cave formation is proposed that does not rely on direct river control over cave locations.
Jacob T. H. Anderson, Toshiyuki Fujioka, David Fink, Alan J. Hidy, Gary S. Wilson, Klaus Wilcken, Andrey Abramov, and Nikita Demidov
The Cryosphere, 17, 4917–4936, https://doi.org/10.5194/tc-17-4917-2023, https://doi.org/10.5194/tc-17-4917-2023, 2023
Short summary
Short summary
Antarctic permafrost processes are not widely studied or understood in the McMurdo Dry Valleys. Our data show that near-surface permafrost sediments were deposited ~180 000 years ago in Pearse Valley, while in lower Wright Valley sediments are either vertically mixed after deposition or were deposited < 25 000 years ago. Our data also record Taylor Glacier retreat from Pearse Valley ~65 000–74 000 years ago and support antiphase dynamics between alpine glaciers and sea ice in the Ross Sea.
Gregory A. Ruetenik, John D. Jansen, Pedro Val, and Lotta Ylä-Mella
Earth Surf. Dynam., 11, 865–880, https://doi.org/10.5194/esurf-11-865-2023, https://doi.org/10.5194/esurf-11-865-2023, 2023
Short summary
Short summary
We compare models of erosion against a global compilation of long-term erosion rates in order to find and interpret best-fit parameters using an iterative search. We find global signals among exponents which control the relationship between erosion rate and slope, as well as other parameters which are common in long-term erosion modelling. Finally, we analyse the global variability in parameters and find a correlation between precipitation and coefficients for optimised models.
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
Short summary
Short summary
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.
Alexandru T. Codilean, Henry Munack, Wanchese M. Saktura, Tim J. Cohen, Zenobia Jacobs, Sean Ulm, Paul P. Hesse, Jakob Heyman, Katharina J. Peters, Alan N. Williams, Rosaria B. K. Saktura, Xue Rui, Kai Chishiro-Dennelly, and Adhish Panta
Earth Syst. Sci. Data, 14, 3695–3713, https://doi.org/10.5194/essd-14-3695-2022, https://doi.org/10.5194/essd-14-3695-2022, 2022
Short summary
Short summary
OCTOPUS v.2 is a web-enabled database that allows users to visualise, query, and download cosmogenic radionuclide, luminescence, and radiocarbon ages and denudation rates associated with erosional landscapes, Quaternary depositional landforms, and archaeological records, along with ancillary geospatial data layers. OCTOPUS v.2 hosts five major data collections. Supporting data are comprehensive and include bibliographic, contextual, and sample-preparation- and measurement-related information.
Klaus M. Wilcken, Alexandru T. Codilean, Réka-H. Fülöp, Steven Kotevski, Anna H. Rood, Dylan H. Rood, Alexander J. Seal, and Krista Simon
Geochronology, 4, 339–352, https://doi.org/10.5194/gchron-4-339-2022, https://doi.org/10.5194/gchron-4-339-2022, 2022
Short summary
Short summary
Cosmogenic nuclides are now widely applied in the Earth sciences; however, more recent applications often push the analytical limits of the technique. Our study presents a comprehensive method for analysis of cosmogenic 10Be and 26Al samples down to isotope concentrations of a few thousand atoms per gram of sample, which opens the door to new and more varied applications of cosmogenic nuclide analysis.
Leonie Peti, Kathryn E. Fitzsimmons, Jenni L. Hopkins, Andreas Nilsson, Toshiyuki Fujioka, David Fink, Charles Mifsud, Marcus Christl, Raimund Muscheler, and Paul C. Augustinus
Geochronology, 2, 367–410, https://doi.org/10.5194/gchron-2-367-2020, https://doi.org/10.5194/gchron-2-367-2020, 2020
Short summary
Short summary
Orakei Basin – a former maar lake in Auckland, New Zealand – provides an outstanding sediment record over the last ca. 130 000 years, but an age model is required to allow the reconstruction of climate change and volcanic eruptions contained in the sequence. To construct a relationship between depth in the sediment core and age of deposition, we combined tephrochronology, radiocarbon dating, luminescence dating, and the relative intensity of the paleomagnetic field in a Bayesian age–depth model.
Oswald Malcles, Philippe Vernant, Jean Chéry, Pierre Camps, Gaël Cazes, Jean-François Ritz, and David Fink
Solid Earth, 11, 241–258, https://doi.org/10.5194/se-11-241-2020, https://doi.org/10.5194/se-11-241-2020, 2020
Short summary
Short summary
We aim to better understand the challenging areas that are the intraplate regions using one example: the southern French Massif Central and its numerous hundreds of meters deep valleys. We apply a multidisciplinary approach there using geomorphology, geochronology, and numerical modeling.
Our dating results show that the canyon incisions are part of the Plio-Quaternary evolution with incision rate of ~ 80 m Ma−1. We propose then that this incision is possible due to an active regional uplift.
Alexandru T. Codilean, Henry Munack, Timothy J. Cohen, Wanchese M. Saktura, Andrew Gray, and Simon M. Mudd
Earth Syst. Sci. Data, 10, 2123–2139, https://doi.org/10.5194/essd-10-2123-2018, https://doi.org/10.5194/essd-10-2123-2018, 2018
Short summary
Short summary
OCTOPUS is a database of cosmogenic radionuclide and luminescence measurements in fluvial sediment made available to the research community via an Open Geospatial Consortium compliant web service. OCTOPUS and its associated data curation framework provide the opportunity for researchers to reuse previously published but otherwise unusable CRN and luminescence data. This delivers the potential to harness old but valuable data that would otherwise be lost to the research community.
J. L. Andersen, D. L. Egholm, M. F. Knudsen, J. D. Jansen, and S. B. Nielsen
Earth Surf. Dynam., 3, 447–462, https://doi.org/10.5194/esurf-3-447-2015, https://doi.org/10.5194/esurf-3-447-2015, 2015
Short summary
Short summary
An increasing number of studies demonstrates links between the intensity of periglacial processes and bedrock erosion in steep mountain landscapes. Here, we quantify the dependence of periglacial processes on temperature and sediment thickness. This allows us to model frost processes across the full range of settings encountered in mountain landscapes. We find that sediment mantle thickness strongly modulates the relation between climate and periglacial weathering and sediment transport.
D. L. Egholm, J. L. Andersen, M. F. Knudsen, J. D. Jansen, and S. B. Nielsen
Earth Surf. Dynam., 3, 463–482, https://doi.org/10.5194/esurf-3-463-2015, https://doi.org/10.5194/esurf-3-463-2015, 2015
Short summary
Short summary
We incorporate relations between climate, sediment thickness and periglacial processes quantified in the accompanying paper into a landscape evolution model. This allows us to time-integrate the periglacial contribution to mountain topography on million-year time scales. It is a robust result of our simulations that periglacial processes lead to topographic smoothing. Owing to the climate dependency, this smoothing leads to formation of low-relief surfaces at altitudes controlled by temperature.
J. K. Willenbring, A. T. Codilean, K. L. Ferrier, B. McElroy, and J. W. Kirchner
Earth Surf. Dynam. Discuss., https://doi.org/10.5194/esurfd-2-1-2014, https://doi.org/10.5194/esurfd-2-1-2014, 2014
Revised manuscript has not been submitted
Related subject area
Physical: Geomorphology (including all aspects of fluvial, coastal, aeolian, hillslope and glacial geomorphology)
Testing floc settling velocity models in rivers and freshwater wetlands
River suspended-sand flux computation with uncertainty estimation using water samples and high-resolution ADCP measurements
Barchan swarm dynamics from a Two-Flank Agent-Based Model
A landslide runout model for sediment transport, landscape evolution, and hazard assessment applications
Tracking slow-moving landslides with PlanetScope data: new perspectives on the satellite's perspective
Topographic metrics for unveiling fault segmentation and tectono-geomorphic evolution with insights into the impact of inherited topography, Ulsan Fault Zone, South Korea
Acceleration of coastal-retreat rates for high-Arctic rock cliffs on Brøggerhalvøya, Svalbard, over the past decade
The impact of bedrock meander cutoffs on 50 kyr scale incision rates, San Juan River, Utah
How water, temperature, and seismicity control the preconditioning of massive rock slope failure (Hochvogel)
Large structure simulation for landscape evolution models
Terrace formation linked to outburst floods at the Diexi palaeo-landslide dam, upper Minjiang River, eastern Tibetan Plateau
Pliocene shorelines and the epeirogenic motion of continental margins: a target dataset for dynamic topography models
Decadal-scale decay of landslide-derived fluvial suspended sediment after Typhoon Morakot
Role of the forcing sources in morphodynamic modelling of an embayed beach
Equilibrium distance from long-range dune interactions
A machine learning approach to the geomorphometric detection of ribbed moraines in Norway
Overdeepening or tunnel valley of the Aare glacier on the northern margin of the European Alps: Basins, riegels, and slot canyons
Stream hydrology controls on ice cliff evolution and survival on debris-covered glaciers
Time-varying drainage basin development and erosion on volcanic edifices
Geomorphic risk maps for river migration using probabilistic modeling – a framework
Evolution of submarine canyons and hanging-wall fans: insights from geomorphic experiments and morphodynamic models
Riverine sediment response to deforestation in the Amazon basin
Physical modeling of ice-sheet-induced salt movements using the example of northern Germany
Geometric constraints on tributary fluvial network junction angles
A new dunetracking tool to support input parameter selection and uncertainty analyses using a Monte Carlo approach
Downstream rounding rate of pebbles in the Himalaya
Post-fire Variability in Sediment Transport by Ravel in the Diablo Range
Landscape response to tectonic deformation and cyclic climate change since ca. 800 ka in the southern Central Andes
Examination of Analytical Shear Stress Predictions for Coastal Dune Evolution
A physics-based model for fluvial valley width
Implications for the resilience of modern coastal systems derived from mesoscale barrier dynamics at Fire Island, New York
Quantifying the migration rate of drainage divides from high-resolution topographic data
Long-term monitoring (1953–2019) of geomorphologically active sections of Little Ice Age lateral moraines in the context of changing meteorological conditions
Coevolving edge rounding and shape of glacial erratics: the case of Shap granite, UK
A simple model for faceted topographies at normal faults based on an extended stream-power law
Dimensionless argument: a narrow grain size range near 2 mm plays a special role in river sediment transport and morphodynamics
Path length and sediment transport estimation from DEMs of difference: a signal processing approach
A numerical model for duricrust formation by water table fluctuations
Influence of cohesive clay on wave–current ripple dynamics captured in a 3D phase diagram
Statistical characterization of erosion and sediment transport mechanics in shallow tidal environments – Part 1: Erosion dynamics
Statistical characterization of erosion and sediment transport mechanics in shallow tidal environments – Part 2: Suspended sediment dynamics
Geomorphological and hydrological controls on sediment export in earthquake-affected catchments in the Nepal Himalaya
Optimization of passive acoustic bedload monitoring in rivers by signal inversion
Stochastic properties of coastal flooding events – Part 2: Probabilistic analysis
Field monitoring of pore water pressure in fully and partly saturated debris flows at Ohya landslide scar, Japan
Analysis of autogenic bifurcation processes resulting in river avulsion
Evidence of slow millennial cliff retreat rates using cosmogenic nuclides in coastal colluvium
Bedload transport fluctuations, flow conditions, and disequilibrium ratio at the Swiss Erlenbach stream: results from 27 years of high-resolution temporal measurements
Stochastic properties of coastal flooding events – Part 1: convolutional-neural-network-based semantic segmentation for water detection
Coexistence of two dune scales in a lowland river
Justin A. Nghiem, Gen K. Li, Joshua P. Harringmeyer, Gerard Salter, Cédric G. Fichot, Luca Cortese, and Michael P. Lamb
Earth Surf. Dynam., 12, 1267–1294, https://doi.org/10.5194/esurf-12-1267-2024, https://doi.org/10.5194/esurf-12-1267-2024, 2024
Short summary
Short summary
Fine sediment grains in freshwater can cohere into faster-settling particles called flocs, but floc settling velocity theory has not been fully validated. Combining three data sources in novel ways in the Wax Lake Delta, we verified a semi-empirical model relying on turbulence and geochemical factors. For a physics-based model, we showed that the representative grain diameter within flocs relies on floc structure and that heterogeneous flow paths inside flocs increase floc settling velocity.
Jessica Marggraf, Guillaume Dramais, Jérôme Le Coz, Blaise Calmel, Benoît Camenen, David J. Topping, William Santini, Gilles Pierrefeu, and François Lauters
Earth Surf. Dynam., 12, 1243–1266, https://doi.org/10.5194/esurf-12-1243-2024, https://doi.org/10.5194/esurf-12-1243-2024, 2024
Short summary
Short summary
Suspended-sand fluxes in rivers vary with time and space, complicating their measurement. The proposed method captures the vertical and lateral variations of suspended-sand concentration throughout a river cross-section. It merges water samples taken at various positions throughout the cross-section with high-resolution acoustic velocity measurements. This is the first method that includes a fully applicable uncertainty estimation; it can easily be applied to any other study sites.
Dominic T. Robson and Andreas C. W. Baas
Earth Surf. Dynam., 12, 1205–1226, https://doi.org/10.5194/esurf-12-1205-2024, https://doi.org/10.5194/esurf-12-1205-2024, 2024
Short summary
Short summary
Barchans are fast-moving sand dunes which form large populations (swarms) on Earth and Mars. We show that a small range of model parameters produces swarms in which dune size does not vary downwind – something that is observed in nature but not when using earlier models. We also show how the shape of dunes and the spatial patterns they form are affected by wind direction. This work furthers our understanding of the interplay between environmental drivers, dune interactions, and swarm properties.
Jeffrey Keck, Erkan Istanbulluoglu, Benjamin Campforts, Gregory Tucker, and Alexander Horner-Devine
Earth Surf. Dynam., 12, 1165–1191, https://doi.org/10.5194/esurf-12-1165-2024, https://doi.org/10.5194/esurf-12-1165-2024, 2024
Short summary
Short summary
MassWastingRunout (MWR) is a new landslide runout model designed for sediment transport, landscape evolution, and hazard assessment applications. MWR is written in Python and includes a calibration utility that automatically determines best-fit parameters for a site and empirical probability density functions of each parameter for probabilistic model implementation. MWR and Jupyter Notebook tutorials are available as part of the Landlab package at https://github.com/landlab/landlab.
Ariane Mueting and Bodo Bookhagen
Earth Surf. Dynam., 12, 1121–1143, https://doi.org/10.5194/esurf-12-1121-2024, https://doi.org/10.5194/esurf-12-1121-2024, 2024
Short summary
Short summary
This study investigates the use of optical PlanetScope data for offset tracking of the Earth's surface movement. We found that co-registration accuracy is locally degraded when outdated elevation models are used for orthorectification. To mitigate this bias, we propose to only correlate scenes acquired from common perspectives or base orthorectification on more up-to-date elevation models generated from PlanetScope data alone. This enables a more detailed analysis of landslide dynamics.
Cho-Hee Lee, Yeong Bae Seong, John Weber, Sangmin Ha, Dong-Eun Kim, and Byung Yong Yu
Earth Surf. Dynam., 12, 1091–1120, https://doi.org/10.5194/esurf-12-1091-2024, https://doi.org/10.5194/esurf-12-1091-2024, 2024
Short summary
Short summary
Topographic metrics were used to understand changes due to tectonic activity. We evaluated the relative tectonic activity along the Ulsan Fault Zone (UFZ), one of the most active fault zones in South Korea. We divided the UFZ into five segments, based on the spatial variation in activity. We modeled the landscape evolution of the study area and interpreted tectono-geomorphic history during which the northern part of the UFZ experienced asymmetric uplift, while the southern part did not.
Juditha Aga, Livia Piermattei, Luc Girod, Kristoffer Aalstad, Trond Eiken, Andreas Kääb, and Sebastian Westermann
Earth Surf. Dynam., 12, 1049–1070, https://doi.org/10.5194/esurf-12-1049-2024, https://doi.org/10.5194/esurf-12-1049-2024, 2024
Short summary
Short summary
Coastal rock cliffs on Svalbard are considered to be fairly stable; however, long-term trends in coastal-retreat rates remain unknown. This study examines changes in the coastline position along Brøggerhalvøya, Svalbard, using aerial images from 1970, 1990, 2010, and 2021. Our analysis shows that coastal-retreat rates accelerate during the period 2010–2021, which coincides with increasing storminess and retreating sea ice.
Aaron T. Steelquist, Gustav B. Seixas, Mary L. Gillam, Sourav Saha, Seulgi Moon, and George E. Hilley
Earth Surf. Dynam., 12, 1071–1089, https://doi.org/10.5194/esurf-12-1071-2024, https://doi.org/10.5194/esurf-12-1071-2024, 2024
Short summary
Short summary
The rates at which rivers erode their bed can be used to interpret the geologic history of a region. However, these rates depend significantly on the time window over which you measure. We use multiple dating methods to determine an incision rate for the San Juan River and compare it to regional rates with longer timescales. We demonstrate how specific geologic events, such as cutoffs of bedrock meander bends, are likely to preserve material we can date but also bias the rates we measure.
Johannes Leinauer, Michael Dietze, Sibylle Knapp, Riccardo Scandroglio, Maximilian Jokel, and Michael Krautblatter
Earth Surf. Dynam., 12, 1027–1048, https://doi.org/10.5194/esurf-12-1027-2024, https://doi.org/10.5194/esurf-12-1027-2024, 2024
Short summary
Short summary
Massive rock slope failures are a significant alpine hazard and change the Earth's surface. Therefore, we must understand what controls the preparation of such events. By correlating 4 years of slope displacements with meteorological and seismic data, we found that water from rain and snowmelt is the most important driver. Our approach is applicable to similar sites and indicates where future climatic changes, e.g. in rain intensity and frequency, may alter the preparation of slope failure.
Julien Coatléven and Benoit Chauveau
Earth Surf. Dynam., 12, 995–1026, https://doi.org/10.5194/esurf-12-995-2024, https://doi.org/10.5194/esurf-12-995-2024, 2024
Short summary
Short summary
The aim of this paper is to explain how to incorporate classical water flow routines into landscape evolution models while keeping numerical errors under control. The key idea is to adapt filtering strategies to eliminate anomalous numerical errors and mesh dependencies, as confirmed by convergence tests with analytic solutions. The emergence of complex geomorphic structures is now driven exclusively by nonlinear heterogeneous physical processes rather than by random numerical artifacts.
Jingjuan Li, John D. Jansen, Xuanmei Fan, Zhiyong Ding, Shugang Kang, and Marco Lovati
Earth Surf. Dynam., 12, 953–971, https://doi.org/10.5194/esurf-12-953-2024, https://doi.org/10.5194/esurf-12-953-2024, 2024
Short summary
Short summary
In this study, we investigated the geomorphology, sedimentology, and chronology of Tuanjie (seven terraces) and Taiping (three terraces) terraces in Diexi, eastern Tibetan Plateau. Results highlight that two damming and three outburst events occurred in the area during the late Pleistocene, and the outburst floods have been a major factor in the formation of tectonically active mountainous river terraces. Tectonic activity and climatic changes play a minor role.
Andrew Hollyday, Maureen E. Raymo, Jacqueline Austermann, Fred Richards, Mark Hoggard, and Alessio Rovere
Earth Surf. Dynam., 12, 883–905, https://doi.org/10.5194/esurf-12-883-2024, https://doi.org/10.5194/esurf-12-883-2024, 2024
Short summary
Short summary
Sea level was significantly higher during the Pliocene epoch, around 3 million years ago. The present-day elevations of shorelines that formed in the past provide a data constraint on the extent of ice sheet melt and the global sea level response under warm Pliocene conditions. In this study, we identify 10 escarpments that formed from wave-cut erosion during Pliocene times and compare their elevations with model predictions of solid Earth deformation processes to estimate past sea level.
Gregory A. Ruetenik, Ken L. Ferrier, and Odin Marc
Earth Surf. Dynam., 12, 863–881, https://doi.org/10.5194/esurf-12-863-2024, https://doi.org/10.5194/esurf-12-863-2024, 2024
Short summary
Short summary
Fluvial sediment fluxes increased dramatically in Taiwan during Typhoon Morakot in 2009, which produced some of the heaviest landsliding on record. We analyzed fluvial discharge and suspended sediment concentration data at 87 gauging stations across Taiwan to quantify fluvial sediment responses since Morakot. In basins heavily impacted by landsliding, rating curve coefficients sharply increased during Morakot and then declined exponentially with a characteristic decay time of <10 years.
Nil Carrion-Bertran, Albert Falqués, Francesca Ribas, Daniel Calvete, Rinse de Swart, Ruth Durán, Candela Marco-Peretó, Marta Marcos, Angel Amores, Tim Toomey, Àngels Fernández-Mora, and Jorge Guillén
Earth Surf. Dynam., 12, 819–839, https://doi.org/10.5194/esurf-12-819-2024, https://doi.org/10.5194/esurf-12-819-2024, 2024
Short summary
Short summary
The sensitivity to the wave and sea-level forcing sources in predicting a 6-month embayed beach evolution is assessed using two different morphodynamic models. After a successful model calibration using in situ data, other sources are applied. The wave source choice is critical: hindcast data provide wrong results due to an angle bias, whilst the correct dynamics are recovered with the wave conditions from an offshore buoy. The use of different sea-level sources gives no significant differences.
Jean Vérité, Clément Narteau, Olivier Rozier, Jeanne Alkalla, Laurie Barrier, and Sylvain Courrech du Pont
EGUsphere, https://doi.org/10.5194/egusphere-2024-1634, https://doi.org/10.5194/egusphere-2024-1634, 2024
Short summary
Short summary
Using a numerical model in 2D, we study how two identical dunes interact with each other when exposed to reversing winds. Depending on the distance between the dunes, they either repel or attract each other until they reach an equilibrium distance, which is controlled by the wind strength, wind reversal frequency and dune size. This process is controlled by the modification of wind flow over dunes of various shape, influencing the sediment transport downstream.
Thomas J. Barnes, Thomas V. Schuler, Simon Filhol, and Karianne S. Lilleøren
Earth Surf. Dynam., 12, 801–818, https://doi.org/10.5194/esurf-12-801-2024, https://doi.org/10.5194/esurf-12-801-2024, 2024
Short summary
Short summary
In this paper, we use machine learning to automatically outline landforms based on their characteristics. We test several methods to identify the most accurate and then proceed to develop the most accurate to improve its accuracy further. We manage to outline landforms with 65 %–75 % accuracy, at a resolution of 10 m, thanks to high-quality/high-resolution elevation data. We find that it is possible to run this method at a country scale to quickly produce landform inventories for future studies.
Fritz Schlunegger, Edi Kissling, Dimitri Tibo Bandou, Guilhem Amin Douillet, David Mair, Urs Marti, Regina Reber, Patrick Fabian Schläfli, and Michael Alfred Schwenk
EGUsphere, https://doi.org/10.5194/egusphere-2024-683, https://doi.org/10.5194/egusphere-2024-683, 2024
Short summary
Short summary
Overdeepenings are bedrock depressions filled with sediment. We combine the results of a gravity survey with drilling data to explore the morphology of such a depression beneath the city of Bern. We find that the target overdeepening comprises two basins >200 m deep. They are separated by a bedrock riegel that itself is cut by narrow canyons up to 150 m deep. We postulate that these structures formed underneath a glacier, where erosion by subglacial meltwater caused the formation of the canyons.
Eric Petersen, Regine Hock, and Michael G. Loso
Earth Surf. Dynam., 12, 727–745, https://doi.org/10.5194/esurf-12-727-2024, https://doi.org/10.5194/esurf-12-727-2024, 2024
Short summary
Short summary
Ice cliffs are melt hot spots that increase melt rates on debris-covered glaciers which otherwise see a reduction in melt rates. In this study, we show how surface runoff streams contribute to the generation, evolution, and survival of ice cliffs by carving into the glacier and transporting rocky debris. On Kennicott Glacier, Alaska, 33 % of ice cliffs are actively influenced by streams, while nearly half are within 10 m of streams.
Daniel O'Hara, Liran Goren, Roos M. J. van Wees, Benjamin Campforts, Pablo Grosse, Pierre Lahitte, Gabor Kereszturi, and Matthieu Kervyn
Earth Surf. Dynam., 12, 709–726, https://doi.org/10.5194/esurf-12-709-2024, https://doi.org/10.5194/esurf-12-709-2024, 2024
Short summary
Short summary
Understanding how volcanic edifices develop drainage basins remains unexplored in landscape evolution. Using digital evolution models of volcanoes with varying ages, we quantify the geometries of their edifices and associated drainage basins through time. We find that these metrics correlate with edifice age and are thus useful indicators of a volcano’s history. We then develop a generalized model for how volcano basins develop and compare our results to basin evolution in other settings.
Brayden Noh, Omar Wani, Kieran B. J. Dunne, and Michael P. Lamb
Earth Surf. Dynam., 12, 691–708, https://doi.org/10.5194/esurf-12-691-2024, https://doi.org/10.5194/esurf-12-691-2024, 2024
Short summary
Short summary
In this paper, we propose a framework for generating risk maps that provide the probabilities of erosion due to river migration. This framework uses concepts from probability theory to learn the river migration model's parameter values from satellite data while taking into account parameter uncertainty. Our analysis shows that such geomorphic risk estimation is more reliable than models that do not explicitly consider various sources of variability and uncertainty.
Steven Y. J. Lai, David Amblas, Aaron Micallef, and Hervé Capart
Earth Surf. Dynam., 12, 621–640, https://doi.org/10.5194/esurf-12-621-2024, https://doi.org/10.5194/esurf-12-621-2024, 2024
Short summary
Short summary
This study explores the creation of submarine canyons and hanging-wall fans on active faults, which can be defined by gravity-dominated breaching and underflow-dominated diffusion processes. The study reveals the self-similarity in canyon–fan long profiles, uncovers Hack’s scaling relationship and proposes a formula to estimate fan volume using canyon length. This is validated by global data from source-to-sink systems, providing insights into deep-water sedimentary processes.
Anuska Narayanan, Sagy Cohen, and John R. Gardner
Earth Surf. Dynam., 12, 581–599, https://doi.org/10.5194/esurf-12-581-2024, https://doi.org/10.5194/esurf-12-581-2024, 2024
Short summary
Short summary
This study investigates the profound impact of deforestation in the Amazon on sediment dynamics. Novel remote sensing data and statistical analyses reveal significant changes, especially in heavily deforested regions, with rapid effects within a year. In less disturbed areas, a 1- to 2-year lag occurs, influenced by natural sediment shifts and human activities. These findings highlight the need to understand the consequences of human activity for our planet's future.
Jacob Hardt, Tim P. Dooley, and Michael R. Hudec
Earth Surf. Dynam., 12, 559–579, https://doi.org/10.5194/esurf-12-559-2024, https://doi.org/10.5194/esurf-12-559-2024, 2024
Short summary
Short summary
We investigate the reaction of salt structures on ice sheet transgressions. We used a series of sandbox models that enabled us to experiment with scaled-down versions of salt bodies from northern Germany. The strongest reactions occurred when large salt pillows were partly covered by the ice load. Subsurface salt structures may play an important role in the energy transition, e.g., as energy storage. Thus, it is important to understand all processes that affect their stability.
Jon D. Pelletier, Robert G. Hayes, Olivia Hoch, Brendan Fenerty, and Luke A. McGuire
EGUsphere, https://doi.org/10.5194/egusphere-2024-1153, https://doi.org/10.5194/egusphere-2024-1153, 2024
Short summary
Short summary
On the gently sloping landscapes next to mountain fronts, junction angles tend to be lower (more acute), while in bedrock landscapes where the initial landscape or tectonic forcing is likely more spatially variable, junction angles tend to be larger (more obtuse). We demonstrate this using an analysis of ~20 million junction angles for the U.S.A., augmented by analyses of the Loess Plateau, China, and synthetic landscapes.
Julius Reich and Axel Winterscheid
EGUsphere, https://doi.org/10.5194/egusphere-2024-579, https://doi.org/10.5194/egusphere-2024-579, 2024
Short summary
Short summary
Analysing the geometry and the dynamics of riverine bedforms (so-called dunetracking) is important for various fields of application and contributes to a sound and efficient river and sediment management. We developed a new tool, which enables a robust estimation of bedform characteristics and with which comprehensive sensitivity analyses can be carried out. Using a test dataset, we show that the selection of input parameters of dunetracking tools can have a significant impact on the results.
Prakash Pokhrel, Mikael Attal, Hugh D. Sinclair, Simon M. Mudd, and Mark Naylor
Earth Surf. Dynam., 12, 515–536, https://doi.org/10.5194/esurf-12-515-2024, https://doi.org/10.5194/esurf-12-515-2024, 2024
Short summary
Short summary
Pebbles become increasingly rounded during downstream transport in rivers due to abrasion. This study quantifies pebble roundness along the length of two Himalayan rivers. We demonstrate that roundness increases with downstream distance and that the rates are dependent on rock type. We apply this to reconstructing travel distances and hence the size of ancient Himalaya. Results show that the ancient river network was larger than the modern one, indicating that there has been river capture.
Hayden L. Jacobson, Danica L. Roth, Gabriel Walton, Margaret Zimmer, and Kerri Johnson
EGUsphere, https://doi.org/10.5194/egusphere-2023-2694, https://doi.org/10.5194/egusphere-2023-2694, 2024
Short summary
Short summary
Loose grains travel farther after a fire because no vegetation is left to stop them. This matters since loose grains at the base of a slope can turn into a debris flow if it rains. To find if grass growing back after a fire had different impacts on grains of different sizes on slopes of different steepness, we dropped thousands of natural grains and measured how far they went. Large grains went farther 7 months after the fire than 11 months after, and small grain movement didn’t change much.
Elizabeth Orr, Taylor Schildgen, Stefanie Tofelde, Hella Wittmann, and Ricardo Alonso
EGUsphere, https://doi.org/10.5194/egusphere-2024-784, https://doi.org/10.5194/egusphere-2024-784, 2024
Short summary
Short summary
Fluvial terraces and alluvial fans in the Toro Basin, NW Argentina record river evolution and global climate cycles over time. Landform dating reveals lower-frequency climate cycles (100-kyr) preserved downstream and higher-frequency cycles (21/40-kyr) upstream, supporting theoretical predications that longer rivers filter out higher-frequency climate signals. This finding improves our understanding of the spatial distribution of sedimentary paleoclimate records within landscapes.
Orie Cecil, Nicholas Cohn, Matthew Farthing, Sourav Dutta, and Andrew Trautz
EGUsphere, https://doi.org/10.5194/egusphere-2024-855, https://doi.org/10.5194/egusphere-2024-855, 2024
Short summary
Short summary
Using computational fluid dynamics, we analyze the error trends of an analytical shear stress distribution model used to drive aeolian transport for coastal dunes which are an important line of defense against storm related flooding hazards. We find that compared to numerical simulations, the analytical model results in a net overprediction of the landward migration rate. Additionally, two data-driven approaches are proposed for reducing the error while maintaining computational efficiency.
Jens Martin Turowski, Aaron Bufe, and Stefanie Tofelde
Earth Surf. Dynam., 12, 493–514, https://doi.org/10.5194/esurf-12-493-2024, https://doi.org/10.5194/esurf-12-493-2024, 2024
Short summary
Short summary
Fluvial valleys are ubiquitous landforms, and understanding their formation and evolution affects a wide range of disciplines from archaeology and geology to fish biology. Here, we develop a model to predict the width of fluvial valleys for a wide range of geographic conditions. In the model, fluvial valley width is controlled by the two competing factors of lateral channel mobility and uplift. The model complies with available data and yields a broad range of quantitative predictions.
Daniel J. Ciarletta, Jennifer L. Miselis, Julie C. Bernier, and Arnell S. Forde
Earth Surf. Dynam., 12, 449–475, https://doi.org/10.5194/esurf-12-449-2024, https://doi.org/10.5194/esurf-12-449-2024, 2024
Short summary
Short summary
We reconstructed the evolution of Fire Island, a barrier island in New York, USA, to identify drivers of landscape change. Results reveal Fire Island was once divided into multiple inlet-separated islands with distinct features. Later, inlets closed, and Fire Island’s landscape became more uniform as human activities intensified. The island is now less mobile and less likely to resist and recover from storm impacts and sea level rise. This vulnerability may exist for other stabilized barriers.
Chao Zhou, Xibin Tan, Yiduo Liu, and Feng Shi
Earth Surf. Dynam., 12, 433–448, https://doi.org/10.5194/esurf-12-433-2024, https://doi.org/10.5194/esurf-12-433-2024, 2024
Short summary
Short summary
The drainage-divide stability provides new insights into both the river network evolution and the tectonic and/or climatic changes. Several methods have been proposed to determine the direction of drainage-divide migration. However, how to quantify the migration rate of drainage divides remains challenging. In this paper, we propose a new method to calculate the migration rate of drainage divides from high-resolution topographic data.
Moritz Altmann, Madlene Pfeiffer, Florian Haas, Jakob Rom, Fabian Fleischer, Tobias Heckmann, Livia Piermattei, Michael Wimmer, Lukas Braun, Manuel Stark, Sarah Betz-Nutz, and Michael Becht
Earth Surf. Dynam., 12, 399–431, https://doi.org/10.5194/esurf-12-399-2024, https://doi.org/10.5194/esurf-12-399-2024, 2024
Short summary
Short summary
We show a long-term erosion monitoring of several sections on Little Ice Age lateral moraines with derived sediment yield from historical and current digital elevation modelling (DEM)-based differences. The first study period shows a clearly higher range of variability of sediment yield within the sites than the later periods. In most cases, a decreasing trend of geomorphic activity was observed.
Paul A. Carling
Earth Surf. Dynam., 12, 381–397, https://doi.org/10.5194/esurf-12-381-2024, https://doi.org/10.5194/esurf-12-381-2024, 2024
Short summary
Short summary
Edge rounding in Shap granite glacial erratics is an irregular function of distance from the source outcrop in northern England, UK. Block shape is conservative, evolving according to block fracture mechanics – stochastic and silver ratio models – towards either of two attractor states. Progressive reduction in size occurs for blocks transported at the sole of the ice mass where the blocks are subject to compressive and tensile forces of the ice acting against a bedrock or till surface.
Stefan Hergarten
EGUsphere, https://doi.org/10.5194/egusphere-2024-336, https://doi.org/10.5194/egusphere-2024-336, 2024
Short summary
Short summary
Faceted topographies are impressing footprints of active tectonics in geomorphology. This paper investigates the evolution of faceted topographies at normal faults and its interaction with the river network theoretically and numerically. As a main result beyond several relations for the the geometry of facets, the horizontal displacement associated to normal faults is crucial for the dissection of initially polygonal facets into triangular facets bounded by almost parallel rivers.
Gary Parker, Chenge An, Michael P. Lamb, Marcelo H. Garcia, Elizabeth H. Dingle, and Jeremy G. Venditti
Earth Surf. Dynam., 12, 367–380, https://doi.org/10.5194/esurf-12-367-2024, https://doi.org/10.5194/esurf-12-367-2024, 2024
Short summary
Short summary
River morphology has traditionally been divided by the size 2 mm. We use dimensionless arguments to show that particles in the 1–5 mm range (i) are the finest range not easily suspended by alluvial flood flows, (ii) are transported preferentially over coarser gravel, and (iii), within limits, are also transported preferentially over sand. We show how fluid viscosity mediates the special status of sediment in this range.
Lindsay Marie Capito, Enrico Pandrin, Walter Bertoldi, Nicola Surian, and Simone Bizzi
Earth Surf. Dynam., 12, 321–345, https://doi.org/10.5194/esurf-12-321-2024, https://doi.org/10.5194/esurf-12-321-2024, 2024
Short summary
Short summary
We propose that the pattern of erosion and deposition from repeat topographic surveys can be a proxy for path length in gravel-bed rivers. With laboratory and field data, we applied tools from signal processing to quantify this periodicity and used these path length estimates to calculate sediment transport using the morphological method. Our results highlight the potential to expand the use of the morphological method using only remotely sensed data as well as its limitations.
Caroline Fenske, Jean Braun, François Guillocheau, and Cécile Robin
EGUsphere, https://doi.org/10.5194/egusphere-2024-160, https://doi.org/10.5194/egusphere-2024-160, 2024
Short summary
Short summary
We have developed a new numerical model to represent the formation of ferricretes which are iron-rich, hard layers found in soils and at the surface of the Earth. We assume that the formation mechanism implies variations in the height of the water table and that the hardening rate is proportional to precipitation. The model allows us to quantify the potential feedbacks they generate on the surface topography and the thickness of the regolith/soil layer.
Xuxu Wu, Jonathan Malarkey, Roberto Fernández, Jaco H. Baas, Ellen Pollard, and Daniel R. Parsons
Earth Surf. Dynam., 12, 231–247, https://doi.org/10.5194/esurf-12-231-2024, https://doi.org/10.5194/esurf-12-231-2024, 2024
Short summary
Short summary
The seabed changes from flat to rippled in response to the frictional influence of waves and currents. This experimental study has shown that the speed of this change, the size of ripples that result and even whether ripples appear also depend on the amount of sticky mud present. This new classification on the basis of initial mud content should lead to improvements in models of seabed change in present environments by engineers and the interpretation of past environments by geologists.
Andrea D'Alpaos, Davide Tognin, Laura Tommasini, Luigi D'Alpaos, Andrea Rinaldo, and Luca Carniello
Earth Surf. Dynam., 12, 181–199, https://doi.org/10.5194/esurf-12-181-2024, https://doi.org/10.5194/esurf-12-181-2024, 2024
Short summary
Short summary
Sediment erosion induced by wind waves is one of the main drivers of the morphological evolution of shallow tidal environments. However, a reliable description of erosion events for the long-term morphodynamic modelling of tidal systems is still lacking. By statistically characterizing sediment erosion dynamics in the Venice Lagoon over the last 4 centuries, we set up a novel framework for a synthetic, yet reliable, description of erosion events in tidal systems.
Davide Tognin, Andrea D'Alpaos, Luigi D'Alpaos, Andrea Rinaldo, and Luca Carniello
Earth Surf. Dynam., 12, 201–218, https://doi.org/10.5194/esurf-12-201-2024, https://doi.org/10.5194/esurf-12-201-2024, 2024
Short summary
Short summary
Reliable quantification of sediment transport processes is necessary to understand the fate of shallow tidal environments. Here we present a framework for the description of suspended sediment dynamics to quantify deposition in the long-term modelling of shallow tidal systems. This characterization, together with that of erosion events, allows one to set up synthetic, yet reliable, models for the long-term evolution of tidal landscapes.
Emma L. S. Graf, Hugh D. Sinclair, Mikaël Attal, Boris Gailleton, Basanta Raj Adhikari, and Bishnu Raj Baral
Earth Surf. Dynam., 12, 135–161, https://doi.org/10.5194/esurf-12-135-2024, https://doi.org/10.5194/esurf-12-135-2024, 2024
Short summary
Short summary
Using satellite images, we show that, unlike other examples of earthquake-affected rivers, the rivers of central Nepal experienced little increase in sedimentation following the 2015 Gorkha earthquake. Instead, a catastrophic flood occurred in 2021 that buried towns and agricultural land under up to 10 m of sediment. We show that intense storms remobilised glacial sediment from high elevations causing much a greater impact than flushing of earthquake-induced landslides.
Mohamad Nasr, Adele Johannot, Thomas Geay, Sebastien Zanker, Jules Le Guern, and Alain Recking
Earth Surf. Dynam., 12, 117–134, https://doi.org/10.5194/esurf-12-117-2024, https://doi.org/10.5194/esurf-12-117-2024, 2024
Short summary
Short summary
Hydrophones are used to monitor sediment transport in the river by listening to the acoustic noise generated by particle impacts on the riverbed. However, this acoustic noise is modified by the river flow and can cause misleading information about sediment transport. This article proposes a model that corrects the measured acoustic signal. Testing the model showed that the corrected signal is better correlated with bedload flux in the river.
Byungho Kang, Rusty A. Feagin, Thomas Huff, and Orencio Durán Vinent
Earth Surf. Dynam., 12, 105–115, https://doi.org/10.5194/esurf-12-105-2024, https://doi.org/10.5194/esurf-12-105-2024, 2024
Short summary
Short summary
We provide a detailed characterization of the frequency, intensity and duration of flooding events at a site along the Texas coast. Our analysis demonstrates the suitability of relatively simple wave run-up models to estimate the frequency and intensity of coastal flooding. Our results validate and expand a probabilistic model of coastal flooding driven by wave run-up that can then be used in coastal risk management in response to sea level rise.
Shunsuke Oya, Fumitoshi Imaizumi, and Shoki Takayama
Earth Surf. Dynam., 12, 67–86, https://doi.org/10.5194/esurf-12-67-2024, https://doi.org/10.5194/esurf-12-67-2024, 2024
Short summary
Short summary
The monitoring of pore water pressure in fully and partly saturated debris flows was performed at Ohya landslide scar, central Japan. The pore water pressure in some partly saturated flows greatly exceeded the hydrostatic pressure. The depth gradient of the pore water pressure in the lower part of the flow was generally higher than the upper part of the flow. We conclude that excess pore water pressure is present in many debris flow surges and is an important mechanism in debris flow behavior.
Gabriele Barile, Marco Redolfi, and Marco Tubino
Earth Surf. Dynam., 12, 87–103, https://doi.org/10.5194/esurf-12-87-2024, https://doi.org/10.5194/esurf-12-87-2024, 2024
Short summary
Short summary
River bifurcations often show the closure of one branch (avulsion), whose causes are still poorly understood. Our model shows that when one branch stops transporting sediments, the other considerably erodes and captures much more flow, resulting in a self-sustaining process. This phenomenon intensifies when increasing the length of the branches, eventually leading to branch closure. This work may help to understand when avulsions occur and thus to design sustainable river restoration projects.
Rémi Bossis, Vincent Regard, Sébastien Carretier, and Sandrine Choy
EGUsphere, https://doi.org/10.5194/egusphere-2023-3020, https://doi.org/10.5194/egusphere-2023-3020, 2024
Short summary
Short summary
The erosion of rocky coasts occurs episodically through wave action and landslides, constituting a major natural hazard. Documenting the factors that control the coastal retreat rate over millennia is fundamental to evidencing any change in time. However, the known rates to date are essentially representative of the last few decades. Here, we present a new method using the concentration of an isotope, 10Be in sediment eroded from the cliff to quantify its retreat rate averaged over millennia.
Dieter Rickenmann
Earth Surf. Dynam., 12, 11–34, https://doi.org/10.5194/esurf-12-11-2024, https://doi.org/10.5194/esurf-12-11-2024, 2024
Short summary
Short summary
Field measurements of the bedload flux with a high temporal resolution in a steep mountain stream were used to analyse the transport fluctuations as a function of the flow conditions. The disequilibrium ratio, a proxy for the solid particle concentration in the flow, was found to influence the sediment transport behaviour, and above-average disequilibrium conditions – associated with a larger sediment availability on the streambed – substantially affect subsequent transport conditions.
Byungho Kang, Rusty A. Feagin, Thomas Huff, and Orencio Durán Vinent
Earth Surf. Dynam., 12, 1–10, https://doi.org/10.5194/esurf-12-1-2024, https://doi.org/10.5194/esurf-12-1-2024, 2024
Short summary
Short summary
Coastal flooding can cause significant damage to coastal ecosystems, infrastructure, and communities and is expected to increase in frequency with the acceleration of sea level rise. In order to respond to it, it is crucial to measure and model their frequency and intensity. Here, we show deep-learning techniques can be successfully used to automatically detect flooding events from complex coastal imagery, opening the way to real-time monitoring and data acquisition for model development.
Judith Y. Zomer, Bart Vermeulen, and Antonius J. F. Hoitink
Earth Surf. Dynam., 11, 1283–1298, https://doi.org/10.5194/esurf-11-1283-2023, https://doi.org/10.5194/esurf-11-1283-2023, 2023
Short summary
Short summary
Secondary bedforms that are superimposed on large, primary dunes likely play a large role in fluvial systems. This study demonstrates that they can be omnipresent. Especially during peak flows, they grow large and can have steep slopes, likely affecting flood risk and sediment transport dynamics. Primary dune morphology determines whether they continuously or intermittently migrate. During discharge peaks, the secondary bedforms can become the dominant dune scale.
Cited articles
Allen, P. A.: From landscapes into geological history, Nature, 451, 274–276,
https://doi.org/10.1038/nature06586, 2008. a, b, c, d
Anderson, R. S.: Particle trajectories on hillslopes: Implications for
particle age and 10Be structure, J. Geophys. Res.-Earth, 120, 1626–1644, https://doi.org/10.1002/2015JF003479, 2015. a
Armitage, J. J., Duller, R. A., Whittaker, A. C., and Allen, P. A.:
Transformation of tectonic and climatic signals from source to sedimentary
archive, Nat. Geosci., 4, 231–235, https://doi.org/10.1038/ngeo1087, 2011. a, b, c
Australian Bureau of Meteorology:
Decadal and multi-decadal mean annual rainfall data, available at:
http://www.bom.gov.au/jsp/ncc/climate_averages/decadal-rainfall, last access: 30 September
2017.
Balco, G., Stone, J. O., Lifton, N. A., and Dunai, T. J.: A complete and
easily accessible means of calculating surface exposure ages or erosion rates
from 10Be and 26Al measurements, Quat. Geochronol., 3, 174–195,
https://doi.org/10.1016/j.quageo.2007.12.001, 2008. a
Bierman, P. and Steig, E. J.: Estimating rates of denudation using cosmogenic
isotope abundances in sediment, Earth Surf. Proc. Land., 21,
125–139, 1996. a
Bierman, P., Albrecht, A., Bothner, M. H., Brown, E. T., Bullen, D. T., Gray,
L. B., and Turpin, L.: Erosion, Weathering, and Sedimentation, in: Isotope
Tracers in Catchment Hydrology, edited by: Kendall, C. and McDonnell, J. J.,
Elsevier, chap. 19, 647–678,
https://doi.org/10.1016/B978-0-444-81546-0.50026-4, 1998. a
Bierman, P. R. and Caffee, M.: Slow rates of rock surface erosion and sediment
production across the Namib Desert and escarpment, southern Africa, Am. J. Sci., 301, 326–358, https://doi.org/10.2475/ajs.301.4-5.326, 2001. a, b
Bierman, P. R. and Nichols, K. K.: Rock to Sediment-Slope to Sea With
10Be-Rates of Landscape Change, Annu. Rev. Earth Planet. Sci., 32, 215–255, https://doi.org/10.1146/annurev.earth.32.101802.120539, 2004. a
Bierman, P. R., Reuter, J. M., Pavich, M., Gellis, A. C., Caffee, M. W., and
Larsen, J.: Using cosmogenic nuclides to contrast rates of erosion and
sediment yield in a semi-arid, arroyo-dominated landscape, Rio Puerco Basin,
New Mexico, Earth Surf. Proc. Land., 30, 935–953,
https://doi.org/10.1002/esp.1255, 2005. a, b, c, d
Boroda, R., Matmon, A., Amit, R., Haviv, I., Arnold, M., Aumaître, G.,
Bourlès, D. L., Keddadouche, K., Eyal, Y., and Enzel, Y.: Evolution and
degradation of flat-top mesas in the hyper-arid Negev, Israel revealed from
10Be cosmogenic nuclides, Earth Surf. Proc. Land., 39,
1611–1621, https://doi.org/10.1002/esp.3551, 2014. a, b
Bowler, J. M.: Aridity in Australia: age, origins and expression in aeolian
landforms and sediments, Earth-Sci. Rev., 12, 279–310,
https://doi.org/10.1016/0012-8252(76)90008-8, 1976. a
Brown, E. T., Stallard, R. F., Larsen, M. C., Raisbeck, G. M., and Yiou, F.:
Denudation rates determined from the accumulation of in situ-produced 10Be
in the Luquillo Experimental Forest, Puerto Rico, Earth Planet. Sc. Lett., 129, 193–202, https://doi.org/10.1016/0012-821X(94)00249-X, 1995. a, b
Callen, R. and Benbow, M.: The deserts-Playas, dunefields and watercourses,
The Geology of South Australia, 2, 244–251, 1995. a
Child, D., Elliott, G., Mifsud, C., Smith, A., and Fink, D.: Sample processing
for earth science studies at ANTARES, Nucl. Instrum. Meth. B, 172,
856–860, https://doi.org/10.1016/S0168-583X(00)00198-1, 2000. a
Chmeleff, J., von Blanckenburg, F., Kossert, K., and Jakob, D.: Determination
of the 10Be half-life by multicollector ICP-MS and liquid scintillation
counting, Nucl. Instrum. Meth. B, 268, 192–199,
https://doi.org/10.1016/j.nimb.2009.09.012, 2010. a
Clapp, E. M., Bierman, P. R., Schick, A. P., Lekach, J., Enzel, Y., and Caffee,
M.: Sediment yield exceeds sediment production in arid region drainage
basins, Geology, 28, 995–998,
https://doi.org/10.1130/0091-7613(2000)28<995:SYESPI>2.0.CO;2, 2000. a
Clapp, E. M., Bierman, P. R., Nichols, K. K., Pavich, M., and Caffee, M.:
Rates of sediment supply to arroyos from upland erosion determined using in
situ produced cosmogenic 10Be and 26Al, Quaternary Res., 55, 235–245,
https://doi.org/10.1006/qres.2000.2211, 2001. a
Clapp, E. M., Bierman, P. R., and Caffee, M.: Using 10Be and 26Al to determine
sediment generation rates and identify sediment source areas in an arid
region drainage basin, Geomorphology, 45, 89–104,
https://doi.org/10.1016/S0169-555X(01)00191-X, 2002. a
Cohen, T. J., Nanson, G. C., Jansen, J. D., Jones, B. G., Jacobs, Z., Larsen,
J. R., May, J. H., Treble, P., Price, D. M., and Smith, A. M.: Late
Quaternary mega-lakes fed by the northern and southern river systems of
central Australia: Varying moisture sources and increased continental
aridity, Palaeogeogr. Palaeocl., 356-357,
89–108, https://doi.org/10.1016/j.palaeo.2011.06.023, 2012. a
Cohen, T. J., Jansen, J. D., Gliganic, L. A., Larsen, J. R., Nanson, G. C.,
May, J.-H., Jones, B. G., and Price, D. M.: Hydrological transformation
coincided with megafaunal extinction in central Australia, Geology, 43,
195–198, https://doi.org/10.1130/G36346.1, 2015. a
Costelloe, J.: Hydrological assessment and analysis of the Neales Catchment,
A report to the South Australian Arid Lands Natural Resources Management
Board, Port Augusta, 2011. a
Croke, J., Magee, J., and Price, D.: Major episodes of Quaternary activity in
the lower Neales River, northwest of Lake Eyre, central Australia,
Palaeogeogr. Palaeocl., 124, 1–15,
https://doi.org/10.1016/0031-0182(96)00016-8, 1996. a
Croke, J., Magee, J., and Wallensky, E.: The role of the Australian Monsoon in
the western catchment of Lake Eyre, central Australia, during the Last
Interglacial, Quatern. Int., 57, 71–80,
https://doi.org/10.1016/S1040-6182(98)00051-2, 1999. a
Davis, M., Matmon, A., Rood, D. H., and Avnaim-Katav, S.: Constant cosmogenic
nuclide concentrations in sand supplied from the Nile River over the past 2.5
my, Geology, 40, 359–362, https://doi.org/10.1130/G32574.1, 2012. a, b, c
Dunai, T. J.: Cosmogenic nuclides: principles, concepts and applications in
the earth surface sciences, Cambridge University Press, 2010. a
Egholm, D. L., Knudsen, M. F., and Sandiford, M.: Lifespan of mountain ranges
scaled by feedbacks between landsliding and erosion by rivers, Nature, 498,
475–8, https://doi.org/10.1038/nature12218, 2013. a
Fifield, L. K., Tims, S., Fujioka, T., Hoo, W. T., and Everett, S.:
Accelerator mass spectrometry with the 14UD accelerator at the Australian
National University, Nucl. Instrum. Meth. B, 268, 858–862,
https://doi.org/10.1016/j.nimb.2009.10.049, 2010. a
Fink, D. and Smith, A.: An inter-comparison of 10Be and 26Al AMS reference
standards and the 10Be half-life, Nucl. Instrum. Meth. B, 259,
600–609, https://doi.org/10.1016/j.nimb.2007.01.299, 2007. a
Fisher, A., Fink, D., Chappell, J., and Melville, M.: 26Al/10Be dating of an
aeolian dust mantle soil in western New South Wales, Australia,
Geomorphology, 219, 201–212, https://doi.org/10.1016/j.geomorph.2014.05.007, 2014. a, b
Fujioka, T. and Chappell, J.: History of Australian aridity: chronology in the
evolution of arid landscapes, Geological Society, London, Special
Publications, 346, 121–139, https://doi.org/10.1144/sp346.8, 2010. a
Fujioka, T., Chappell, J., Honda, M., Yatsevich, I., Fifield, K., and Fabel,
D.: Global cooling initiated stony deserts in central Australia 2–4 Ma,
dated by cosmogenic 21Ne-10Be, Geology, 33, 993–996, https://doi.org/10.1130/g21746.1,
2005. a, b, c, d
Fujioka, T., Chappell, J., Fifield, L. K., and Rhodes, E. J.: Australian
desert dune fields initiated with Pliocene-Pleistocene global climatic
shift, Geology, 37, 51–54, https://doi.org/10.1130/g25042a.1, 2009. a, b, c
Geoscience Australia,
1 second SRTM Derived Hydrological Digital Elevation Model (DEM-H) version
1.0, available at:
https://data.gov.au/dataset/1-second-srtm-derived-hydrological-digital-elevation-model-dem,
last access: 30 September 2017.
Gosse, J. C. and Phillips, F. M.: Terrestrial in situ cosmogenic nuclides:
theory and application, Quaternary Sci. Rev., 20, 1475–1560,
https://doi.org/10.1016/S0277-3791(00)00171-2, 2001. a, b
Granger, D. and Riebe, C.: Cosmogenic nuclides in weathering and erosion,
Treatise on geochemistry, 5, 1–43, 2007. a
Granger, D. E. and Muzikar, P. F.: Dating sediment burial with in
situ-produced cosmogenic nuclides: theory, techniques, and limitations,
Earth Planet. Sc. Lett., 188, 269–281,
https://doi.org/10.1016/S0012-821X(01)00309-0, 2001. a, b, c, d
Heimsath, A. M., Furbish, D. J., and Dietrich, W. E.: The illusion of
diffusion: Field evidence for depth-dependent sediment transport, Geology,
33, 949–952, https://doi.org/10.1130/g21868.1, 2005. a
Hesse, P. P.: The Australian desert dunefields: formation and evolution in an
old, flat, dry continent, Geological Society, London, Special Publications,
346, 141–164, https://doi.org/10.1144/sp346.9, 2010. a
Hesse, P. P.: How do longitudinal dunes respond to climate forcing? Insights
from 25 years of luminescence dating of the Australian desert dunefields,
Quatern. Int., 410, 11–29, https://doi.org/10.1016/j.quaint.2014.02.020,
2016. a
Hidy, A. J., Gosse, J. C., Blum, M. D., and Gibling, M. R.:
Glacial–interglacial variation in denudation rates from interior Texas,
USA, established with cosmogenic nuclides, Earth Planet. Sc. Lett., 390, 209–221, https://doi.org/10.1016/j.epsl.2014.01.011, 2014. a, b, c, d
Hillis, R. R., Sandiford, M., Reynolds, S. D., and Quigley, M. C.: Present-day
stresses, seismicity and Neogene-to-Recent tectonics of Australia's
“passive” margins: intraplate deformation controlled by plate boundary
forces, Geological Society, London, Special Publications, 306, 71–90,
https://doi.org/10.1144/SP306.3, 2008. a
Hippe, K., Kober, F., Zeilinger, G., Ivy-Ochs, S., Maden, C., Wacker, L.,
Kubik, P. W., and Wieler, R.: Quantifying denudation rates and sediment
storage on the eastern Altiplano, Bolivia, using cosmogenic 10Be, 26Al, and
in situ 14C, Geomorphology, 179, 58–70,
https://doi.org/10.1016/j.geomorph.2012.07.031, 2012. a
Hu, X., Kirby, E., Pan, B., Granger, D. E., and Su, H.: Cosmogenic burial ages
reveal sediment reservoir dynamics along the Yellow River, China, Geology,
39, 839–842, https://doi.org/10.1130/G32030.1, 2011. a
Jansen, J. D., Nanson, G. C., Cohen, T. J., Fujioka, T., Fabel, D., Larsen,
J. R., Codilean, A. T., Price, D. M., Bowman, H. H., May, J. H., and
Gliganic, L. A.: Lowland river responses to intraplate tectonism and climate
forcing quantified with luminescence and cosmogenic 10Be, Earth Planet. Sc. Lett., 366, 49–58, https://doi.org/10.1016/j.epsl.2013.02.007,
2013. a, b
Jungers, M. C., Bierman, P. R., Matmon, A., Nichols, K., Larsen, J., and
Finkel, R.: Tracing hillslope sediment production and transport with in situ
and meteoric 10Be, J. Geophys. Res.-Earth, 114, F04020,
https://doi.org/10.1029/2008JF001086, 2009. a
Kober, F., Ivy-Ochs, S., Zeilinger, G., Schlunegger, F., Kubik, P. W., Baur,
H., and Wieler, R.: Complex multiple cosmogenic nuclide concentration and
histories in the arid Rio Lluta catchment, northern Chile, Earth Surf. Proc. Land., 34, 398–412, https://doi.org/10.1002/esp.1748, 2009. a, b, c
Kohl, C. and Nishiizumi, K.: Chemical isolation of quartz for measurement of
in-situ-produced cosmogenic nuclides, Geochim. Cosmochim. Ac., 56,
3583–3587, https://doi.org/10.1016/0016-7037(92)90401-4, 1992. a
Korschinek, G., Bergmaier, A., Faestermann, T., Gerstmann, U., Knie, K., Rugel,
G., Wallner, A., Dillmann, I., Dollinger, G., Von Gostomski, C. L., Kossert,
K., Maiti, M., Poutivtsev, M., and Remmert, A.: A new value for the
half-life of 10Be by heavy-ion elastic recoil detection and liquid
scintillation counting, Nucl. Instrum. Meth. B, 268, 187–191,
https://doi.org/10.1016/j.nimb.2009.09.020, 2010. a
Kotwicki, V. and Isdale, P.: Hydrology of Lake Eyre, Australia: El Nino link,
Palaeogeogr. Palaeocl., 84, 87–98,
https://doi.org/10.1016/0031-0182(91)90037-R, 1991. a
Lal, D.: Cosmic ray labeling of erosion surfaces: in situ nuclide production
rates and erosion models, Earth Planet. Sc. Lett., 104,
424–439, https://doi.org/10.1016/0012-821X(91)90220-C, 1991. a, b
Lupker, M., Blard, P.-H., Lavé, J., France-Lanord, C., Leanni, L., Puchol, N.,
Charreau, J., and Bourlès, D.: 10Be-derived Himalayan denudation rates and
sediment budgets in the Ganga basin, Earth Planet. Sc. Lett.,
333–334, 146–156, https://doi.org/10.1016/j.epsl.2012.04.020, 2012. a
Mabbutt, J. A.: Desert landforms, Australian National University Press,
Canberra, 1977. a
Martin, H.: Cenozoic climatic change and the development of the arid
vegetation in Australia, J. Arid Environ., 66, 533–563,
https://doi.org/10.1016/j.jaridenv.2006.01.009, 2006. a
Matmon, A., Bierman, P., Larsen, J., Southworth, S., Pavich, M., and Caffee,
M.: Temporally and spatially uniform rates of erosion in the southern
Appalachian Great Smoky Mountains, Geology, 31, 155–158, 2003. a
Matmon, A., Simhai, O., Amit, R., Haviv, I., Porat, N., McDonald, E.,
Benedetti, L., and Finkel, R.: Desert pavement-coated surfaces in extreme
deserts present the longest-lived landforms on Earth, Geol. Soc. Am. Bull., 121, 688–697, https://doi.org/10.1130/b26422.1, 2009. a
McGowran, B., Holdgate, G., Li, Q., and Gallagher, S.: Cenozoic stratigraphic
succession in southeastern Australia, Aust. J. Earth Sci.,
51, 459–496, https://doi.org/10.1111/j.1400-0952.2004.01078.x, 2004. a
McKean, J. A., Dietrich, W. E., Finkel, R. C., Southon, J. R., and Caffee,
M. W.: Quantification of soil production and downslope creep rates from
cosmogenic 10Be accumulations on a hillslope profile, Geology, 21, 343–346,
https://doi.org/10.1130/0091-7613(1993)021<0343:QOSPAD>2.3.CO;2, 1993. a
McMahon, T. A., Murphy, R. E., Peel, M. C., Costelloe, J. F., and Chiew, F.
H. S.: Understanding the surface hydrology of the Lake Eyre Basin: Part
1 – Rainfall, J. Arid Environ., 72, 1853–1868,
https://doi.org/10.1016/j.jaridenv.2008.06.004, 2008. a
Mifsud, C., Fujioka, T., and Fink, D.: Extraction and purification of quartz
in rock using hot phosphoric acid for in situ cosmogenic exposure dating,
Nucl. Instrum. Meth. B, 294, 203–207,
https://doi.org/10.1016/j.nimb.2012.08.037, 2013. a
Montgomery, D. R.: Predicting landscape-scale erosion rates using digital
elevation models, C. R. Geosci., 335, 1121–1130,
https://doi.org/10.1016/j.crte.2003.10.005, 2003. a
Nanson, G., Chen, X., and Price, D.: Aeolian and fluvial evidence of changing
climate and wind patterns during the past 100 ka in the western Simpson
Desert, Australia, Palaeogeogr. Palaeocl., 113,
87–102, https://doi.org/10.1016/0031-0182(95)00064-S, 1995. a
Nanson, G. C., Price, D. M., and Short, S. A.: Wetting and drying of Australia
over the past 300 ka, Geology, 20, 791–794,
https://doi.org/10.1130/0091-7613(1992)020<0791:WADOAO>2.3.CO;2, 1992. a
Nanson, G. C., Price, D. M., Jones, B. G., Maroulis, J. C., Coleman, M.,
Bowman, H., Cohen, T. J., Pietsch, T. J., and Larsen, J. R.: Alluvial
evidence for major climate and flow regime changes during the middle and late
Quaternary in eastern central Australia, Geomorphology, 101, 109–129,
https://doi.org/10.1016/j.geomorph.2008.05.032, 2008. a
Nichols, K. K., Bierman, P. R., Hooke, R. L., Clapp, E. M., and Caffee, M.:
Quantifying sediment transport on desert piedmonts using 10Be and 26Al,
Geomorphology, 45, 105–125, https://doi.org/10.1016/S0169-555X(01)00192-1, 2002. a
Nishiizumi, K.: Preparation of 26Al AMS standards, Nucl. Instrum. Meth. B, 223, 388–392, https://doi.org/10.1016/j.nimb.2004.04.075, 2004. a, b
Nishiizumi, K., Imamura, M., Caffee, M. W., Southon, J. R., Finkel, R. C., and
McAninch, J.: Absolute calibration of 10Be AMS standards, Nucl. Instrum. Meth. B, 258, 403–413, https://doi.org/10.1016/j.nimb.2007.01.297, 2007. a, b
Norris, T., Gancarz, A., Rokop, D., and Thomas, K.: Half-life of 26Al, in:
Lunar and planetary science conference proceedings, 14, B331–B333,
https://doi.org/10.1029/JB088iS01p0B331, 1983. a
Norton, K. P., von Blanckenburg, F., and Kubik, P. W.: Cosmogenic
nuclide-derived rates of diffusive and episodic erosion in the glacially
sculpted upper Rhone Valley, Swiss Alps, Earth Surf. Proc. Land., 35, 651–662, https://doi.org/10.1002/esp.1961, 2010. a
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. a, b
Quigley, M. C., Clark, D., and Sandiford, M.: Tectonic geomorphology of
Australia, Geological Society, London, Special Publications, 346, 243–265,
https://doi.org/10.1144/sp346.13, 2010. a
Raymond, O., Liu, S., Gallagher, R., Zhang, W., and Highet, L.: Surface
Geology of Australia 1:1 million scale (2012 Edn.), Commonwealth of
Australia (Geoscience Australia), available at: https://data.gov.au/dataset/surface-geology-of-australia-data-package-2012-edition (last access: 30
September 2017) 2012. a, b
Sandiford, M.: Low thermal Peclet number intraplate orogeny in central
Australia, Earth Planet. Sc. Lett., 201, 309–320,
https://doi.org/10.1016/S0012-821X(02)00723-9, 2002. a
Sandiford, M. and Quigley, M.: TOPO-OZ: Insights into the various modes of
intraplate deformation in the Australian continent, Tectonophysics, 474,
405–416, https://doi.org/10.1016/j.tecto.2009.01.028, 2009. a
Sandiford, M., Wallace, M., and Coblentz, D.: Origin of the in situ stress
field in south-eastern Australia, Basin Res., 16, 325–338,
https://doi.org/10.1111/j.1365-2117.2004.00235.x, 2004. a
Sandiford, M., Quigley, M., de Broekert, P., and Jakica, S.: Tectonic
framework for the Cenozoic cratonic basins of Australia, Aust. J. Earth Sci., 56, S5–S18, https://doi.org/10.1080/08120090902870764, 2009. a, b, c
Schaller, M., Blanckenburg, F. v., Hovius, N., Veldkamp, A., van den Berg,
M. W., and Kubik, P.: Paleoerosion rates from cosmogenic 10Be in a 1.3 Ma
terrace sequence: response of the River Meuse to changes in climate and rock
uplift, J. Geol., 112, 127–144, https://doi.org/10.1086/381654, 2004. a
Scharf, T. E., Codilean, A. T., de Wit, M., Jansen, J. D., and Kubik, P. W.:
Strong rocks sustain ancient postorogenic topography in southern Africa,
Geology, 41, 331–334, https://doi.org/10.1130/g33806.1, 2013. a
Shepherd, M. and Price, D.: Thermoluminescence dating of late Quaternary dune
sand, Manawatu/Horowhenua area, New Zealand: a comparison with 14C age
determinations, New Zeal. J. Geol. Geop., 33, 535–539,
https://doi.org/10.1080/00288306.1990.10421371, 1990. a
Stone, J. O.: Air pressure and cosmogenic isotope production, J.
Geophys. Res., 105, 23753, https://doi.org/10.1029/2000jb900181, 2000. a, b, c
Struck, M., Jansen, J. D., Fujioka, T., Codilean, A. T., Fink, D., Egholm,
D. L., Fülöp, R.-H., Wilcken, K. M., and Kotevski, S.: Soil
production and transport on postorogenic desert hillslopes quantified with
10Be and 26Al, Geol. Soc. Am. Bull., 130,
1017–1040,
https://doi.org/10.1130/B31767.1, 2018. a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u
Vermeesch, P., Fenton, C., Kober, F., Wiggs, G., Bristow, C. S., and Xu, S.:
Sand residence times of one million years in the Namib Sand Sea from
cosmogenic nuclides, Nat. Geosci., 3, 862–865, https://doi.org/10.1038/ngeo985,
2010. a, b, c
von Blanckenburg, F.: The control mechanisms of erosion and weathering at
basin scale from cosmogenic nuclides in river sediment, Earth Planet. Sc. Lett., 237, 462–479, https://doi.org/10.1016/j.epsl.2005.06.030, 2005. a
Waclawik, V. G., Lang, S. C., and Krapf, C. B. E.: Fluvial response to
tectonic activity in an intra-continental dryland setting: The Neales River,
Lake Eyre, Central Australia, Geomorphology, 102, 179–188,
https://doi.org/10.1016/j.geomorph.2007.06.021, 2008.
a
Wasson, R. J., Fitchett, K., Mackey, B., and Hyde, R.: Large-scale patterns of
dune type, spacing and orientation in the Australian continental dunefield,
Aust. Geogr., 19, 89–104, https://doi.org/10.1080/00049188808702952, 1988. a
Wells, S. G., McFadden, L. D., Poths, J., and Olinger, C. T.: Cosmogenic 3He
surface-exposure dating of stone pavements: Implications for landscape
evolution in deserts, Geology, 23, 613–616,
https://doi.org/10.1130/0091-7613(1995)023<0613:CHSEDO>2.3.CO;2, 1995. a
Wilcken, K., Fink, D., Hotchkis, M., Garton, D., Button, D., Mann, M., Kitchen,
R., Hauser, T., and O´Connor, A.: Accelerator Mass Spectrometry on
SIRIUS: New 6MV spectrometer at ANSTO, Nucl. Instrum. Meth. B, 1,
278–282, https://doi.org/10.1016/j.nimb.2017.01.003, 2017. a
Wittmann, H. and von Blanckenburg, F.: The geological significance of
cosmogenic nuclides in large lowland river basins, Earth-Sci. Rev.,
159, 118–141, https://doi.org/10.1016/j.earscirev.2016.06.001, 2016. a
Wittmann, H., von Blanckenburg, F., Guyot, J. L., Maurice, L., and Kubik,
P. W.: From source to sink: Preserving the cosmogenic 10Be-derived
denudation rate signal of the Bolivian Andes in sediment of the Beni and
Mamoré foreland basins, Earth Planet. Sc. Lett., 288, 463–474,
https://doi.org/10.1016/j.epsl.2009.10.008, 2009. a
Wittmann, H., von Blanckenburg, F., Maurice, L., Guyot, J. L., and Kubik,
P. W.: Recycling of Amazon floodplain sediment quantified by cosmogenic 26Al
and 10Be, Geology, 39, 467–470, https://doi.org/10.1130/g31829.1, 2011. a, b, c
Wittmann, H., Malusà, M. G., Resentini, A., Garzanti, E., and Niedermann, S.:
The cosmogenic record of mountain erosion transmitted across a foreland
basin: Source-to-sink analysis of in situ 10Be, 26Al and 21Ne in sediment of
the Po river catchment, Earth Planet. Sc. Lett., 452, 258–271,
https://doi.org/10.1016/j.epsl.2016.07.017, 2016. a, b
Short summary
Measurements of cosmogenic nuclides 10Be and 26Al in sediment along central Australian streams show that lithologically controlled magnitudes of source-area erosion rates (0.2–11 m Myr-1) are preserved downstream despite sediment mixing. Conversely, downstream-increasing sediment burial signals (> 400 kyr) indicate sediment incorporation from adjacent, long-exposed storages, which, combined with low sediment supply and discontinuous flux, likely favours source-area 10Be–26Al signal masking.
Measurements of cosmogenic nuclides 10Be and 26Al in sediment along central Australian streams...
