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Outputs (142)

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., McPhail, S. D., Perrett, J., Webb, A., & 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., McPhail, S. D., Perrett, J., Webb, A., & 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. The influence of earth surface movements and human activities on the river Karun in lowland south-west Iran. (Thesis). University of Hull. 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., Breen, M., & 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., Parsons, D. R., & 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.

Gravity-driven flow in a submarine channel bend: Direct field evidence of helical flow reversal (2010)
Journal Article
Parsons, D. R., Peakall, J., Aksu, A. E., Flood, R. D., Hiscott, R. N., Beşiktepe, Ş., & Mouland, D. (2010). Gravity-driven flow in a submarine channel bend: Direct field evidence of helical flow reversal. Geology, 38(12), 1063-1066. https://doi.org/10.1130/G31121.1

Submarine meandering channels are conduits that transport gravity-driven flows and sediments into the deep sea. Such channel systems form distributive networks across submarine fans, ultimately forming the largest sedimentary deposits on Earth. Despi... Read More about Gravity-driven flow in a submarine channel bend: Direct field evidence of helical flow reversal.

Response of river-dominated delta channel networks to permanent changes in river discharge (2010)
Journal Article
Edmonds, D., Slingerland, R., Best, J., Parsons, D., & Smith, N. (2010). Response of river-dominated delta channel networks to permanent changes in river discharge. Geophysical research letters, 37(12), 1-5. https://doi.org/10.1029/2010GL043269

Using numerical experiments, we investigate how river-dominated delta channel networks are likely to respond to changes in river discharge predicted to occur over the next century as a result of environmental change. Our results show for a change in... Read More about Response of river-dominated delta channel networks to permanent changes in river discharge.

A new methodology for the quantitative visualization of coherent flow structures in alluvial channels using multibeam echo-sounding (MBES) (2010)
Journal Article
Best, J., Simmons, S., Parsons, D., Oberg, K., Czuba, J., & Malzone, C. (2010). A new methodology for the quantitative visualization of coherent flow structures in alluvial channels using multibeam echo-sounding (MBES). Geophysical research letters, 37(6), Article ARTN L06405. https://doi.org/10.1029/2009gl041852

In order to investigate the interactions between turbulence and suspended sediment transport in natural aqueous environments, we ideally require a technique that allows simultaneous measurement of fluid velocity and sediment concentration for the who... Read More about A new methodology for the quantitative visualization of coherent flow structures in alluvial channels using multibeam echo-sounding (MBES).