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  • Articles  (315)
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  • Articles  (315)
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  • 1
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    Establishing a sediment budget in the newly created “Kleine Noordwaard” wetland area in the Rhine–Meuse delta (2018)
    Copernicus
    Details
    Publication Date: 2018-03-07
    Description: Establishing a sediment budget in the newly created “Kleine Noordwaard” wetland area in the Rhine–Meuse delta Eveline Christien van der Deijl, Marcel van der Perk, and Hans Middelkoop Earth Surf. Dynam., 6, 187-201, https://doi.org/10.5194/esurf-6-187-2018, 2018 To study the effectiveness of river delta restoration, we used field observations and elevation data to quantify the magnitude and spatial patterns of aggradation and erosion in a restored wetland in the Rhine-Meuse delta. Erosion and aggradation rates decrease over time, but aggradation compensates for sea-level rise and soil subsidence. Channels in the centre had aggraded, whereas the inlet and outlet eroded. Furthermore, sediment is in general uniformly distributed over the intertidal area.
    Electronic ISSN: 2196-6338
    Topics: Geosciences
    Published by Copernicus
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  • 2
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    How to explain variations in sea cliff erosion rates? Insights from a literature synthesis (2018)
    Copernicus
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    Publication Date: 2018-03-06
    Description: How to explain variations in sea cliff erosion rates? Insights from a literature synthesis Mélody Prémaillon, Vincent Regard, Thomas J. B. Dewez, and Yves Auda Earth Surf. Dynam. Discuss., https//doi.org/10.5194/esurf-2018-12,2018 Manuscript under review for ESurf (discussion: open, 0 comments) Coastal erosion is of major concern for society, our study focus on rocky coast whose evolution remains poorly understood. We use the increasing number of erosion-related data and compiled it for better understanding how and how much rocky coasts erode. We found that rock resistance explain in first order erosion rates whereas influence of climate and sea is secondary. Weak rock coasts loose in median 23 meters per century, about ten times more than hard rock coasts.
    Electronic ISSN: 2196-6338
    Topics: Geosciences
    Published by Copernicus
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  • 3
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    A hydroclimatological approach to predicting regional landslide probability using Landlab (2018)
    Copernicus
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    Publication Date: 2018-03-06
    Description: A hydroclimatological approach to predicting regional landslide probability using Landlab Ronda Strauch, Erkan Istanbulluoglu, Sai Siddhartha Nudurupati, Christina Bandaragoda, Nicole M. Gasparini, and Gregory E. Tucker Earth Surf. Dynam., 6, 49-75, https://doi.org/10.5194/esurf-6-49-2018, 2018 We develop a model of annual probability of shallow landslide initiation triggered by soil water from a hydrologic model. Our physically based model accommodates data uncertainty using a Monte Carlo approach. We found elevation-dependent patterns in probability related to the stabilizing effect of forests and soil and slope limitation at high elevations. We demonstrate our model in Washington, USA, but it is designed to run elsewhere with available data for risk planning using the Landlab.
    Electronic ISSN: 2196-6338
    Topics: Geosciences
    Published by Copernicus
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  • 4
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    A lattice grain model of hillslope evolution (2018)
    Copernicus
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    Publication Date: 2018-03-06
    Description: A lattice grain model of hillslope evolution Gregory E. Tucker, Scott W. McCoy, and Daniel E. J. Hobley Earth Surf. Dynam. Discuss., https//doi.org/10.5194/esurf-2018-4,2018 Manuscript under review for ESurf (discussion: open, 0 comments) This article presents a new technique for computer simulation of slope forms. The method provides a way to study how events that disturb soil or turn rock into soil add up over time to produce landforms. The model represents a cross section of a hypothetical landform is represented as a lattice of cells, each of which may represent air, soil, or rock. Despite its simplicity, the model does a good job of simulating a range of common of natural slope forms.
    Electronic ISSN: 2196-6338
    Topics: Geosciences
    Published by Copernicus
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  • 5
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    Alluvial cover controlling the width, slope and sinuosity of bedrock channels (2018)
    Copernicus
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    Publication Date: 2018-03-06
    Description: Alluvial cover controlling the width, slope and sinuosity of bedrock channels Jens Martin Turowski Earth Surf. Dynam., 6, 29-48, https://doi.org/10.5194/esurf-6-29-2018, 2018 Bedrock channels are a key component of mountainous landscapes. Here, a new model of the steady-state morphology, including channel width, slope and sinuosity, is derived from process physics considerations. The model compares favourably to observed scaling relations.
    Electronic ISSN: 2196-6338
    Topics: Geosciences
    Published by Copernicus
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  • 6
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    Glacial Isostatic Adjustment modelling: historical perspectives, recent advances, and future directions (2018)
    Copernicus
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    Publication Date: 2018-03-06
    Description: Glacial Isostatic Adjustment modelling: historical perspectives, recent advances, and future directions Pippa L. Whitehouse Earth Surf. Dynam. Discuss., https//doi.org/10.5194/esurf-2018-6,2018 Manuscript under review for ESurf (discussion: open, 2 comments) This article is a contribution to a special issue on “Two centuries of modelling across scales”. It describes the historical observations, evolving hypotheses, and early calculations that led to the development of the field known as Glacial Isostatic Adjustment (GIA) modelling, which seeks to understand feedbacks between ice-sheet change, sea-level change, and solid Earth deformation. Recent advances are discussed. Future research in the field is likely to involve an interdisciplinary approach.
    Electronic ISSN: 2196-6338
    Topics: Geosciences
    Published by Copernicus
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  • 7
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    Tracking the 26Al/10Be source-area signal in sediment-routing systems of arid central Australia (2018)
    Copernicus
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    Publication Date: 2018-03-06
    Description: Tracking the 26 Al/ 10 Be source-area signal in sediment-routing systems of arid central Australia Martin Struck, John D. Jansen, Toshiyuki Fujioka, Alexandru T. Codilean, David Fink, Réka-Hajnalka Fülöp, Klaus M. Wilcken, David M. Price, Steven Kotevski, L. Keith Fifield, and John Chappell Earth Surf. Dynam. Discuss., https//doi.org/10.5194/esurf-2017-76,2018 Manuscript under review for ESurf (discussion: final response, 3 comments) Measurements of cosmogenic nuclides 10 Be and 26 Al in sediment along central Australian streams show that lithologically-controlled magnitudes of source-area erosion rates (0.2–11 m/m.y.) are preserved downstream despite sediment mixing. Conversely, downstream-increasing sediment burial signals (〉 400 k.y.) indicate sediment incorporation from adjacent, long-exposed storages, which, combined with low sediment supply and discontinuous flux, likely favours source-area 10 Be- 26 Al signal masking.
    Electronic ISSN: 2196-6338
    Topics: Geosciences
    Published by Copernicus
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  • 8
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    U–Th and 10Be constraints on sediment recycling in proglacial settings, Lago Buenos Aires, Patagonia (2018)
    Copernicus
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    Publication Date: 2018-03-06
    Description: U–Th and 10 Be constraints on sediment recycling in proglacial settings, Lago Buenos Aires, Patagonia 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, 2018 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.
    Electronic ISSN: 2196-6338
    Topics: Geosciences
    Published by Copernicus
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  • 9
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    Topographical change caused by moderate and small floods in a gravel bed ephemeral river – a depth-averaged morphodynamic simulation approach (2018)
    Copernicus
    Details
    Publication Date: 2018-03-06
    Description: Topographical change caused by moderate and small floods in a gravel bed ephemeral river – a depth-averaged morphodynamic simulation approach Eliisa S. Lotsari, Mikel Calle, Gerardo Benito, Antero Kukko, Harri Kaartinen, Juha Hyyppä, Hannu Hyyppä, and Petteri Alho Earth Surf. Dynam., 6, 163-185, https://doi.org/10.5194/esurf-6-163-2018, 2018 This paper analyses the timing of topographical changes of a gravel bed ephemeral river channel during consecutive and moderate- and low-magnitude floods by applying a morphodynamic model calibrated with pre- and post-event surveys using RTK-GPS and mobile laser scanning. The channel acted as a braided river during lower flows but as a meandering river during higher flows. The channel changes can be greater during the long-lasting receding phase than during the rising phase of the floods.
    Electronic ISSN: 2196-6338
    Topics: Geosciences
    Published by Copernicus
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  • 10
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    Optimising 4-D surface change detection: an approach for capturing rockfall magnitude–frequency (2018)
    Copernicus
    Details
    Publication Date: 2018-03-06
    Description: Optimising 4-D surface change detection: an approach for capturing rockfall magnitude–frequency Jack G. Williams, Nick J. Rosser, Richard J. Hardy, Matthew J. Brain, and Ashraf A. Afana Earth Surf. Dynam., 6, 101-119, https://doi.org/10.5194/esurf-6-101-2018, 2018 We present a method to analyse surface change using 3-D data collected at hourly intervals. This is applied to 9000 surveys of a failing rock slope, acquired over 10 months. A higher proportion and frequency of small rockfall is observed than in less-frequent (e.g. monthly) monitoring. However, quantifying longer-term erosion rates may be more suited to less-frequent data collection, which contains lower accumulative errors due to the number of surveys and the lower proportion of small events.
    Electronic ISSN: 2196-6338
    Topics: Geosciences
    Published by Copernicus
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