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All Outputs (125)

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., …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.

River dunes in unsteady conditions (2015)
Thesis
Unsworth, C. A. (2015). River dunes in unsteady conditions. (Thesis). University of Hull. Retrieved from https://hull-repository.worktribe.com/output/4217884

This thesis explores the nature of river dunes in unsteady conditions. River dune research has two main philosophical approaches that are necessitated by the nature of dunes; they are individually dynamic features emergent from the interaction betwee... Read More about River dunes in unsteady conditions.

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.

Pressurized groundwater outflow experiments and numerical modeling for outflow channels on Mars (2014)
Journal Article
Marra, W. A., Hauber, E., McLelland, S. J., Murphy, B. J., Parsons, D. R., Conway, S. J., …Kleinhans, M. G. (2014). Pressurized groundwater outflow experiments and numerical modeling for outflow channels on Mars. Journal of Geophysical Research: Planets, 119(12), 2668-2693. https://doi.org/10.1002/2014JE004701

© 2014. American Geophysical Union. All Rights Reserved. The landscape of Mars shows incised channels that often appear abruptly in the landscape, suggesting a groundwater source. However, groundwater outflow processes are unable to explain the recon... Read More about Pressurized groundwater outflow experiments and numerical modeling for outflow channels on Mars.

High-resolution numerical modelling of flow-vegetation interactions (2014)
Journal Article
Marjoribanks, T. I., Hardy, R. J., Lane, S. N., & Parsons, D. R. (2014). High-resolution numerical modelling of flow-vegetation interactions. Journal of Hydraulic Research, 52(6), 775-793. https://doi.org/10.1080/00221686.2014.948502

In this paper, we present and apply a new three-dimensional model for the prediction of canopy-flow and turbulence dynamics in open-channel flow. The approach uses a dynamic immersed boundary technique that is coupled in a sequentially staggered mann... Read More about High-resolution numerical modelling of flow-vegetation interactions.

Comment on “A simple model for vertical profiles of velocity and suspended sediment concentration in straight and curved submarine channels” by M. Bolla Pittaluga and J. Imran (2014)
Journal Article
Peakall, J., Darby, S. E., Dorrell, R. M., Parsons, D. R., Sumner, E. J., Wynn, R. B., …Bolla Pittaluga, M. (2014). Comment on “A simple model for vertical profiles of velocity and suspended sediment concentration in straight and curved submarine channels” by M. Bolla Pittaluga and J. Imran. Journal of Geophysical Research: Earth Surface, 119(9), 2070-2073. https://doi.org/10.1002/2014JF003211

This article is a comment on Bolla Pittaluga and Imran [] doi: 10.1002/2013JF002812.

Influence of junction angle on three-dimensional flow structure and bed morphology at confluent meander bends during different hydrological conditions (2014)
Journal Article
Riley, J. D., Rhoads, B. L., Parsons, D. R., & Johnson, K. K. (2015). Influence of junction angle on three-dimensional flow structure and bed morphology at confluent meander bends during different hydrological conditions. Earth surface processes and landforms : the journal of the British Geomorphological Research Group, 40(2), 252-271. https://doi.org/10.1002/esp.3624

© 2014 John Wiley & Sons, Ltd. Recent field and modeling investigations have examined the fluvial dynamics of confluent meander bends where a straight tributary channel enters a meandering river at the apex of a bend with a 90° junction angle. Past... Read More about Influence of junction angle on three-dimensional flow structure and bed morphology at confluent meander bends during different hydrological conditions.

The impact of significant input of fine sediment on benthic fauna at tributary junctions: a case study of the Bermejo-Paraguay River confluence, Argentina (2014)
Journal Article
Blettler, M. C. M., Amsler, M. L., Ezcurra de Drago, I., Espinola, L. A., Eberle, E., Paira, A., …Drago, E. E. (2015). The impact of significant input of fine sediment on benthic fauna at tributary junctions: a case study of the Bermejo-Paraguay River confluence, Argentina. Ecohydrology, 8(2), 340-352. https://doi.org/10.1002/eco.1511

This study examines the morphological features, suspended sediment inputs and hydraulic conditions within a large river in association with ecological patterns before and after a tributary confluence. In order to examine these effects, the macroinver... Read More about The impact of significant input of fine sediment on benthic fauna at tributary junctions: a case study of the Bermejo-Paraguay River confluence, Argentina.

Physical modelling of water, fauna and flora: Knowledge gaps, avenues for future research and infrastructural needs (2014)
Journal Article
Thomas, R. E., Johnson, M. F., Frostick, L. E., Parsons, D. R., Bouma, T. J., Dijkstra, J. T., …Vousdoukas, M. I. (2014). Physical modelling of water, fauna and flora: Knowledge gaps, avenues for future research and infrastructural needs. Journal of Hydraulic Research, 52(3), 311-325. https://doi.org/10.1080/00221686.2013.876453

Physical modelling is a key tool for generating understanding of the complex interactions between aquatic organisms and hydraulics, which is important for management of aquatic environments under environmental change and our ability to exploit ecosys... Read More about Physical modelling of water, fauna and flora: Knowledge gaps, avenues for future research and infrastructural needs.

The critical role of stratification in submarine channels: Implications for channelization and long runout of flows (2014)
Journal Article
Dorrell, R. M., Darby, S. E., Peakall, J., Sumner, E. J., Parsons, D. R., & Wynn, R. B. (2014). The critical role of stratification in submarine channels: Implications for channelization and long runout of flows. Journal of Geophysical Research: Oceans, 119(4), 2620-2641. https://doi.org/10.1002/2014jc009807

Channelized submarine gravity currents travel remarkable distances, transporting sediment to the distal reaches of submarine fans. However, the mechanisms by which flows can be sustained over these distances remain enigmatic. In this paper we conside... Read More about The critical role of stratification in submarine channels: Implications for channelization and long runout of flows.

Autonomous Underwater Vehicles (AUVs): Their past, present and future contributions to the advancement of marine geoscience (2014)
Journal Article
Wynn, R. B., Huvenne, V. A., Le Bas, T. P., Murton, B. J., Connelly, D. P., Bett, B. J., …Hunt, J. E. (2014). Autonomous Underwater Vehicles (AUVs): Their past, present and future contributions to the advancement of marine geoscience. Marine Geology, 352, 451-468. https://doi.org/10.1016/j.margeo.2014.03.012

Autonomous Underwater Vehicles (AUVs) have a wide range of applications in marine geoscience, and are increasingly being used in the scientific, military, commercial, and policy sectors. Their ability to operate autonomously of a host vessel makes th... Read More about Autonomous Underwater Vehicles (AUVs): Their past, present and future contributions to the advancement of marine geoscience.

Scales and causes of heterogeneity in bars in a large multi-channel river: Río Paraná, Argentina (2014)
Journal Article
Reesink, A. J. H., Ashworth, P. J., Sambrook Smith, G. H., Best, J. L., Parsons, D. R., Amsler, M. L., …Szupiany, R. N. (2014). Scales and causes of heterogeneity in bars in a large multi-channel river: Río Paraná, Argentina. Sedimentology, 61(4), 1055-1085. https://doi.org/10.1111/sed.12092

To date, published studies of alluvial bar architecture in large rivers have been restricted mostly to case studies of individual bars and single locations. Relatively little is known about how the depositional processes and sedimentary architecture... Read More about Scales and causes of heterogeneity in bars in a large multi-channel river: Río Paraná, Argentina.

Near-bed and surface flow division patterns in experimental river bifurcations (2014)
Journal Article
Marra, W. A., Parsons, D. R., Kleinhans, M. G., Keevil, G. M., & Thomas, R. E. (2014). Near-bed and surface flow division patterns in experimental river bifurcations. Water Resources Research, 50(2), 1506-1530. https://doi.org/10.1002/2013WR014215

Understanding channel bifurcation mechanics is of great importance for predicting and managing multichannel river processes and avulsion in distributary river deltas. To date, research on river channel bifurcations has focused on factors determining... Read More about Near-bed and surface flow division patterns in experimental river bifurcations.

Driven around the bend: spatial evolution and controls on the orientation of helical bend flow in a natural submarine gravity current (2014)
Journal Article
Sumner, E. J., Peakall, J., Dorrell, R. M., Parsons, D. R., Darby, S. E., Wynn, R. B., …White, D. (2014). Driven around the bend: spatial evolution and controls on the orientation of helical bend flow in a natural submarine gravity current. Journal of Geophysical Research: Oceans, 119(2), 898-913. https://doi.org/10.1002/2013jc009008

Submarine channel systems transport vast amounts of terrestrial sediment into the deep sea. Understanding the dynamics of the gravity currents that create these systems, and in particular, how these flows interact with and form bends, is fundamental... Read More about Driven around the bend: spatial evolution and controls on the orientation of helical bend flow in a natural submarine gravity current.

First direct measurements of hydraulic jumps in an active submarine density current (2013)
Journal Article
Sumner, E. J., Peakall, J., Parsons, D. R., Wynn, R. B., Darby, S. E., Dorrell, R. M., …White, D. (2013). First direct measurements of hydraulic jumps in an active submarine density current. Geophysical research letters, 40(22), 5904-5908. https://doi.org/10.1002/2013gl057862

For almost half a century, it has been suspected that hydraulic jumps, which consist of a sudden decrease in downstream velocity and increase in flow thickness, are an important feature of submarine density currents such as turbidity currents and deb... Read More about First direct measurements of hydraulic jumps in an active submarine density current.

The influence of earth surface movements and human activities on the river Karun in lowland south-west Iran (2013)
Thesis
Woodbridge, K. P. (2013). The influence of earth surface movements and human activities on the river Karun in lowland south-west Iran. (Thesis). University of Hull. Retrieved from https://hull-repository.worktribe.com/output/4215645

Earth surface movements are a primary external control on river system dynamics and evolution. It has often been observed that when responding to Earth surface motion driven by surface expression of folds, major rivers incise across young, active fol... Read More about The influence of earth surface movements and human activities on the river Karun in lowland south-west Iran.

Superelevation and overspill control secondary flow dynamics in submarine channels (2013)
Journal Article
Dorrell, R. M., Darby, S. E., Peakall, J., Sumner, E. J., Parsons, D. R., & Wynn, R. B. (2013). Superelevation and overspill control secondary flow dynamics in submarine channels. Journal of Geophysical Research: Oceans, 118(8), 3895-3915. https://doi.org/10.1002/jgrc.20277

In subaerial and submarine meander bends, fluid flow travels downstream in a helical spiral, the structure of which is determined by centrifugal, hydrostatic, baroclinic, and Coriolis forces that together balance frictional stresses generated by the... Read More about Superelevation and overspill control secondary flow dynamics in submarine channels.

Monitoring the generation and evolution of the sediment plume behind towed fishing gears using a multibeam echosounder (2013)
Journal Article
O'Neill, F. G., Simmons, S. M., Parsons, D. R., Best, J. L., Copland, P. J., Armstrong, F., …Summerbell, K. (2013). Monitoring the generation and evolution of the sediment plume behind towed fishing gears using a multibeam echosounder. ICES journal of marine science : journal du conseil, 70(4), 892-903. https://doi.org/10.1093/icesjms/fst051

O'Neill, F. G., Simmons, S. M., Parsons, D. R., Best, J. L., Copland, P. J., Armstrong, F., Breen, M., and Summerbell, K. 2013. Monitoring the generation and evolution of the sediment plume behind towed fishing gears using a multibeam echosounder. -... Read More about Monitoring the generation and evolution of the sediment plume behind towed fishing gears using a multibeam echosounder.

Flow separation at the inner (convex) and outer (concave) banks of constant-width and widening open-channel bends (2012)
Journal Article
Blanckaert, K., Kleinhans, M. G., Mclelland, S. J., Uijttewaal, W. S., Murphy, B., van de Kruijs, A., …Chen, Q. (2013). Flow separation at the inner (convex) and outer (concave) banks of constant-width and widening open-channel bends. Earth surface processes and landforms : the journal of the British Geomorphological Research Group, 38(7), 696-716. https://doi.org/10.1002/esp.3324

There is a paucity of data and insight in the mechanisms of, and controls on flow separation and recirculation at natural sharply-curved river bends. Herein we report on successful laboratory experiments that elucidate flow structure in one constant-... Read More about Flow separation at the inner (convex) and outer (concave) banks of constant-width and widening open-channel bends.