All Outputs (10)

Bedform genesis in bedrock substrates: Insights into formative processes from a new experimental approach and the importance of suspension-dominated abrasion (2015)
Journal Article
Yin, D., Peakall, J., Parsons, D., Chen, Z., Averill, H. M., Wignall, P., & Best, J. (2016). Bedform genesis in bedrock substrates: Insights into formative processes from a new experimental approach and the importance of suspension-dominated abrasion. Geomorphology, 255, 26-38. https://doi.org/10.1016/j.geomorph.2015.12.008

© 2015 Elsevier B.V. Bedrock channels are common in the natural environment, and bedrock channel erosion sets the pace of denudation in many river catchments. However, in comparison to the large number of studies concerning the formation of alluvial... Read More about Bedform genesis in bedrock substrates: Insights into formative processes from a new experimental approach and the importance of suspension-dominated abrasion.

Modulation of outer bank erosion by slump blocks: disentangling the protective and destructive role of failed material on the three-dimensional flow structure (2015)
Journal Article
Hackney, C., Best, J., Leyland, J., Darby, S. E., Parsons, D., Aalto, R., & Nicholas, A. (2015). Modulation of outer bank erosion by slump blocks: disentangling the protective and destructive role of failed material on the three-dimensional flow structure. Geophysical research letters, 42(24), 10663-10670. https://doi.org/10.1002/2015GL066481

The three-dimensional flow field near the banks of alluvial channels is the primary factor controlling rates of bank erosion. Although submerged slump blocks and associated large-scale bank roughness elements have both previously been proposed to div... Read More about Modulation of outer bank erosion by slump blocks: disentangling the protective and destructive role of failed material on the three-dimensional flow structure.

The role of discharge variability in determining alluvial stratigraphy (2015)
Journal Article
Nicholas, A. P., Sambrook Smith, G. H., Amsler, M. L., Ashworth, P. J., Best, J. L., Hardy, R. J., Lane, S. N., Orfeo, O., Parsons, D. R., Reesink, A. J., Sandbach, S. D., Simpson, C. J., & Szupiany, R. N. (2016). The role of discharge variability in determining alluvial stratigraphy. Geology, 44(1), 3-6. https://doi.org/10.1130/G37215.1

We illustrate the potential for using physics-based modeling to link alluvial stratigraphy to large river morphology and dynamics. Model simulations, validated using ground penetrating radar data from the Río Paraná, Argentina, demonstrate a strong r... Read More about The role of discharge variability in determining alluvial stratigraphy.

Extremes in dune preservation: Controls on the completeness of fluvial deposits (2015)
Journal Article
Reesink, A., Van den Berg, J., Parsons, D., Amsler, M., Best, J., Hardy, R., Orfeo, O., & Szupiany, R. (2015). Extremes in dune preservation: Controls on the completeness of fluvial deposits. Earth-Science Reviews, 150, 652-665. https://doi.org/10.1016/j.earscirev.2015.09.008

Understanding sedimentary preservation underpins our ability to interpret the ancient sedimentary record and reconstruct paleoenvironments and paleoclimates. Dune sets are ubiquitous in preserved river deposits and are typically interpreted based on... Read More about Extremes in dune preservation: Controls on the completeness of fluvial deposits.

Groundwater seepage landscapes from distant and local sources in experiments and on Mars (2015)
Journal Article
Marra, W. A., McLelland, S. J., Parsons, D. R., Murphy, B. J., Hauber, E., & Kleinhans, M. G. (2015). Groundwater seepage landscapes from distant and local sources in experiments and on Mars. Earth surface dynamics ESURF ; an interactive open access journal of the European Geosciences Union, 3(3), 389-408. https://doi.org/10.5194/esurf-3-389-2015

© 2014 Author(s). Valleys with theater-shaped heads can form due to the seepage of groundwater and as a result of knickpoint (waterfall) erosion generated by overland flow. This ambiguity in the mechanism of formation hampers the interpretation of su... Read More about Groundwater seepage landscapes from distant and local sources in experiments and on Mars.

Fluvio-deltaic avulsions during relative sea-level fall. (2015)
Journal Article
Nijhuis, A. G., Edmonds, D. A., Caldwell, R. L., Cederberg, J. A., Slingerland, R. L., Best, J. L., Parsons, D. R., & Robinson, R. A. J. (2015). Fluvio-deltaic avulsions during relative sea-level fall. Geology, 43(8), 719-722. https://doi.org/10.1130/g36788.1

Understanding river response to changes in relative sea level (RSL) is essential for predicting fluvial stratigraphy and source-to-sink dynamics. Recent theoretical work has suggested that rivers can remain aggradational during RSL fall, but field da... Read More about Fluvio-deltaic avulsions during relative sea-level fall..

Sticky stuff: redefining bedform prediction in modern and ancient environments (2015)
Journal Article
Schindler, R. J., Parsons, D. R., Ye, L., Hope, J. A., Baas, J. H., Peakall, J., Manning, A. J., Aspden, R. J., Malarkey, J., Simmons, S., Paterson, D. M., Lichtman, I. D., Davies, A. G., Thorne, P. D., & Bass, S. J. (2015). Sticky stuff: redefining bedform prediction in modern and ancient environments. Geology, 43(5), 399-402. https://doi.org/10.1130/g36262.1

The dimensions and dynamics of subaqueous bedforms are well known for cohesionless sediments. However, the effect of physical cohesion imparted by cohesive clay within mixed sand-mud substrates has not been examined, despite its recognized influence... Read More about Sticky stuff: redefining bedform prediction in modern and ancient environments.

Grain-size controls on the morphology and internal geometry of river-dominated deltas (2015)
Journal Article
Burpee, A. P., Slingerland, R. L., Edmonds, D. A., Parsons, D., Best, J., Cederberg, J., McGuffin, A., Caldwell, R., Nijhuis, A., & Royce, J. (2015). Grain-size controls on the morphology and internal geometry of river-dominated deltas. Journal of Sedimentary Research, 85(6), 699-714. https://doi.org/10.2110/jsr.2015.39

Predictions of a delta's morphology, facies, and stratigraphy are typically derived from its relative wave, tide, and river energies, with sediment type playing a lesser role. Here we test the hypothesis that, all other factors being equal, the topse... Read More about Grain-size controls on the morphology and internal geometry of river-dominated deltas.

The pervasive role of biological cohesion in bedform development (2015)
Journal Article
Malarkey, J., Baas, J. H., Hope, J. A., Aspden, R. J., Parsons, D. R., Peakall, J., Paterson, D. M., Schindler, R. J., Ye, L., Lichtman, I. D., Bass, S. J., Davies, A. G., Manning, A. J., & Thorne, P. D. (2015). The pervasive role of biological cohesion in bedform development. Nature communications, 6(1), Article ARTN 6257. https://doi.org/10.1038/ncomms7257

Sediment fluxes in aquatic environments are crucially dependent on bedform dynamics. However, sediment-flux predictions rely almost completely on clean-sand studies, despite most environments being composed of mixtures of non-cohesive sands, physical... Read More about The pervasive role of biological cohesion in bedform development.

Simulating tidal and storm surge hydraulics with a simple 2D inertia based model, in the Humber Estuary, U.K (2015)
Journal Article
Skinner, C. J., Coulthard, T. J., Parsons, D. R., Ramirez, J. A., Mullen, L., & Manson, S. (2015). Simulating tidal and storm surge hydraulics with a simple 2D inertia based model, in the Humber Estuary, U.K. Estuarine, coastal and shelf science, 155(March), 126-136. https://doi.org/10.1016/j.ecss.2015.01.019

The hydraulic modelling of tidal estuarine environments has been largely limited to complex 3D models that are computationally expensive. This makes them unsuitable for applications which make use of live data to make real/near time forecasts, such a... Read More about Simulating tidal and storm surge hydraulics with a simple 2D inertia based model, in the Humber Estuary, U.K.