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  • Articles  (151)
  • 2015-2019  (151)
  • 2016  (151)
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  • Articles  (151)
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  • 2015-2019  (151)
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  • 1
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    Glaciation's topographic control on Holocene erosion at the eastern edge of the Alps (2016)
    Copernicus
    Details
    Publication Date: 2016-12-23
    Description: Glaciation's topographic control on Holocene erosion at the eastern edge of the Alps Jean L. Dixon, Friedhelm von Blanckenburg, Kurt Stüwe, and Marcus Christl Earth Surf. Dynam., 4, 895-909, doi:10.5194/esurf-4-895-2016, 2016 We quantify the glacial legacy of Holocene erosion at the eastern edge of the European Alps and add insight to the debate on drivers of Alpine erosion. We present the first data explicitly comparing 10 Be-based erosion rates in previously glaciated and non-glaciated basins ( n  = 26). Erosion rates vary 5-fold across the region, correlating with local topography and glacial history. Our approach and unique study site allow us to isolate the role of glacial topographic legacies from other controls.
    Electronic ISSN: 2196-6338
    Topics: Geosciences
    Published by Copernicus
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  • 2
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    Distinct phases of eustatism and tectonics control the late Quaternary landscape evolution at the southern coastline of Crete (2016)
    Copernicus
    Details
    Publication Date: 2016-12-22
    Description: Distinct phases of eustatism and tectonics control the late Quaternary landscape evolution at the southern coastline of Crete Vasiliki Mouslopoulou, John Begg, Alexander Fülling, Daniel Moraetis, Panagiotis Partsinevelos, and Onno Oncken Earth Surf. Dynam. Discuss., doi:10.5194/esurf-2016-62,2016 Manuscript under review for ESurf (discussion: open, 0 comments) A double coastal alluvial-fan system on Crete is used as proxy for landscape evolution. Each juxtaposed fan records individual phases of alluvial and marine incision, providing unprecedented resolution in the formation and evolution of its landscape. The fan sequence developed during MIS 3 due to sea-level fluctuations but it was preserved due to tectonic uplift during the subsequent 20 000 years. Thus, eustacy and tectonics were important in fan evolution, but over distinct time-intervals.
    Electronic ISSN: 2196-6338
    Topics: Geosciences
    Published by Copernicus
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  • 3
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    Graffiti for science – erosion painting reveals spatially variable erosivity of sediment-laden flows (2016)
    Copernicus
    Details
    Publication Date: 2016-12-16
    Description: Graffiti for science – erosion painting reveals spatially variable erosivity of sediment-laden flows Alexander R. Beer, James W. Kirchner, and Jens M. Turowski Earth Surf. Dynam., 4, 885-894, doi:10.5194/esurf-4-885-2016, 2016 Spatial bedrock erosion data from stream channels are important for engineering issues and landscape evolution model assessment. However, acquiring such data is challenging and only few data sets exist. Detecting changes in repeated photographs of painted bedrock surfaces easily allows for semi-quantitative conclusions on the spatial distribution of sediment transport and its effects: abrasion on surfaces facing the streamflow and shielding of surfaces by abundant sediment.
    Electronic ISSN: 2196-6338
    Topics: Geosciences
    Published by Copernicus
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  • 4
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    A probabilistic framework for the cover effect in bedrock erosion (2016)
    Copernicus
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    Publication Date: 2016-12-13
    Description: A probabilistic framework for the cover effect in bedrock erosion Jens M. Turowski and Rebecca Hodge Earth Surf. Dynam. Discuss., doi:10.5194/esurf-2016-59,2016 Manuscript under review for ESurf (discussion: open, 0 comments) Bedrock incision by rivers is driven by the impacts of sediment particles moved by the water flow. Sediment residing on the bed can protect the rock from impacts, thereby reducing erosion rates, a phenomenon known as the cover effect. The cover effect has been shown to be important in many field and laboratory experiments. Here, we develop a mathematical framework to describe the cover effect which can be used to compare data and to predict the extent of cover in streams.
    Electronic ISSN: 2196-6338
    Topics: Geosciences
    Published by Copernicus
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  • 5
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    The influence of turbulent bursting on sediment resuspension under fluvial unidirectional currents (2016)
    Copernicus
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    Publication Date: 2016-12-09
    Description: The influence of turbulent bursting on sediment resuspension under fluvial unidirectional currents Sarik Salim, Charitha Pattiaratchi, Rafael Tinoco, Giovanni Coco, Yasha Hetzel, Sarath Wijeratne, and Ravindra Jayaratne Earth Surf. Dynam. Discuss., doi:10.5194/esurf-2016-60,2016 Manuscript under review for ESurf (discussion: open, 0 comments) The aim of this paper was to verify the existence of a critical velocity concept in terms of turbulent bursting phenomena. Laboratory experiments were undertaken in a unidirectional current flume where an acoustic Doppler velocimeter was used. Results in the laboratory conditions both above and below the measured critical velocity highlighted the need to re-evaluate the accuracy of a single time-averaged critical velocity for the initiation of sediment entrainment.
    Electronic ISSN: 2196-6338
    Topics: Geosciences
    Published by Copernicus
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  • 6
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    Complex coastlines responding to climate change: do shoreline shapes reflect present forcing or “remember” the distant past? (2016)
    Copernicus
    Details
    Publication Date: 2016-12-03
    Description: Complex coastlines responding to climate change: do shoreline shapes reflect present forcing or “remember” the distant past? Christopher W. Thomas, A. Brad Murray, Andrew D. Ashton, Martin D. Hurst, Andrew K. A. P. Barkwith, and Michael A. Ellis Earth Surf. Dynam., 4, 871-884, doi:10.5194/esurf-4-871-2016, 2016 Complex sandy coastlines, such as capes and spits, are important socio-economically while underpinning and protecting important natural habitats. Although they may protect inshore areas, they are inherently fragile and susceptible to erosion. We have explored how spits and capes might adapt to changing wave climate through modelling. We find that coastlines may not be in equilibrium with current conditions, and past shapes may strongly influence those adapting to new wave climates.
    Electronic ISSN: 2196-6338
    Topics: Geosciences
    Published by Copernicus
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  • 7
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    Constraining Quaternary erosion of the Campine Plateau (NE Belgium) using Bayesian inversion of an in-situ produced 10Be concentration depth profile (2016)
    Copernicus
    Details
    Publication Date: 2016-12-02
    Description: Constraining Quaternary erosion of the Campine Plateau (NE Belgium) using Bayesian inversion of an in-situ produced 10 Be concentration depth profile Koen Beerten, Eric Laloy, Veerle Vanacker, Bart Rogiers, and Laurent Wouters Earth Surf. Dynam. Discuss., doi:10.5194/esurf-2016-57,2016 Manuscript under review for ESurf (discussion: open, 0 comments) Over very long timescales, 100.000 yrs and 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 elevated long-term erosion rates in the Campine area (lowland Europe). They seem to be related to the loose and unconsolidated nature of the subsoil, and the sudden base level lowering in the wider region during the Middle Pleistocene.
    Electronic ISSN: 2196-6338
    Topics: Geosciences
    Published by Copernicus
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  • 8
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    Self-similar growth of a bimodal laboratory fan (2016)
    Copernicus
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    Publication Date: 2016-11-26
    Description: Self-similar growth of a bimodal laboratory fan Pauline Delorme, Vaughan Voller, Chris Paola, Olivier Devauchelle, Éric Lajeunesse, Laurie Barrier, and François Métivier Earth Surf. Dynam. Discuss., doi:10.5194/esurf-2016-56,2016 Manuscript under review for ESurf (discussion: open, 0 comments) Alluvial fans are sedimentary deposits that take place at the outlet of mountain range. This location makes them the first sedimentary archive where sediments, eroded from mountain, are deposed. Their morphology is controlled by the water and sediment discharges and sediments characteristic. By using controlled laboratory experiments we show that an alluvial fan composed of two distinct sediment has a characteristic shape, it can be decomposed into two fans make of one sediment.
    Electronic ISSN: 2196-6338
    Topics: Geosciences
    Published by Copernicus
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  • 9
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    Reconstruction of North American drainage basins and river discharge since the Last Glacial Maximum (2016)
    Copernicus
    Details
    Publication Date: 2016-11-09
    Description: Reconstruction of North American drainage basins and river discharge since the Last Glacial Maximum Andrew D. Wickert Earth Surf. Dynam., 4, 831-869, doi:10.5194/esurf-4-831-2016, 2016 The ice sheets that once spread across northern North America dramatically changed the drainage basin areas and discharges of rivers across the continent. As these ice sheets retreated, starting around 19 500 years ago, they sent meltwater to the oceans, influencing climate and building a geologic record of deglaciation. This record can be used to evaluate ice-sheet reconstructions and build an improved history and understanding of past ice-sheet collapse across North America.
    Electronic ISSN: 2196-6338
    Topics: Geosciences
    Published by Copernicus
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  • 10
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    Assessment of structural sediment connectivity within catchments: insights from graph theory (2016)
    Copernicus
    Details
    Publication Date: 2016-11-09
    Description: Assessment of structural sediment connectivity within catchments: insights from graph theory Étienne Cossart and Mathieu Fressard Earth Surf. Dynam. Discuss., doi:10.5194/esurf-2016-55,2016 Manuscript under review for ESurf (discussion: open, 0 comments) An assessment of connectivity will help at describing coupling patterns, scale dependence of erosional processes, to understand and predict how policies at catchment scale may supply sediments to the river system (dismantlement of hydraulic infrastructures, changes in terms of land use, etc.).
    Electronic ISSN: 2196-6338
    Topics: Geosciences
    Published by Copernicus
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