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Self-sharpening induces jet-like structure in seafloor gravity currents (2019)
Journal Article
Dorrell, R. M., Peakall, J., Darby, S. E., Parsons, D. R., Johnson, J., Sumner, E. J., …Tezcan, D. (2019). Self-sharpening induces jet-like structure in seafloor gravity currents. Nature communications, 10(1), https://doi.org/10.1038/s41467-019-09254-2

Gravity currents are the primary means by which sediments, solutes and heat are transported across the ocean-floor. Existing theory of gravity current flow employs a statistically-stable model of turbulent diffusion that has been extant since the 196... Read More

Quantifying faulting and base level controls on syn-rift sedimentation using stratigraphic architectures of coeval, adjacent Early-Middle Pleistocene fan deltas in Lake Corinth, Greece (2019)
Journal Article
Barrett, B. J., Collier, R. E., Hodgson, D. M., Gawthorpe, R. L., Dorrell, R. M., & Cullen, T. M. (in press). Quantifying faulting and base level controls on syn-rift sedimentation using stratigraphic architectures of coeval, adjacent Early-Middle Pleistocene fan deltas in Lake Corinth, Greece. Basin Research, https://doi.org/10.1111/bre.12356

Quantification of allogenic controls in rift basin‐fills requires analysis of multiple depositional systems because of marked along‐strike changes in depositional architecture. Here, we compare two coeval Early‐Middle Pleistocene syn‐rift fan deltas... Read More

The structure and entrainment characteristics of partially-confined gravity currents (2019)
Journal Article
Kelly, R. W., Dorrell, R. M., Burns, A. D., & McCaffrey, W. D. (2019). The structure and entrainment characteristics of partially-confined gravity currents. Journal of geophysical research. C, Oceans, 124(3), 2110-2125. https://doi.org/10.1029/2018JC014042

Seafloor channels are the main conduit for turbidity currents transporting sediment to the deep ocean and they can extend for thousands of kilometres along the ocean floor. Although it is common for channel‐traversing turbidity currents to spill onto... Read More

Inflation of ponded, particulate laden density currents (2018)
Journal Article
Dorrell, R. M., Patacci, M., & McCaffrey, W. D. (2018). Inflation of ponded, particulate laden density currents. Journal of Sedimentary Research, 88(11), 1276-1282. doi:10.2110/jsr.2018.65

Field-based, physical modeling and analytical research approaches currently suggest that topographically confined particle-laden density currents commonly inflate to produce suspension clouds that generate tabular and texturally homogeneous sedimenta... Read More

Optimisation of flow resistance and turbulent mixing over bed forms (2018)
Journal Article
Arfaie, A., Burns, A., Dorrell, R., Ingham, D., Eggenhuisen, J., & McCaffrey, W. (2018). Optimisation of flow resistance and turbulent mixing over bed forms. Environmental modelling & software : with environment data news, 107, 141-147. doi:10.1016/j.envsoft.2018.06.002

Previous work on the interplay between turbulent mixing and flow resistance for flows over periodic rib roughness elements is extended to consider the flow over idealized shapes representative of naturally occurring sedimentary bed forms. The primary... Read More

Scaling analysis of multipulsed turbidity current evolution with application to turbidite interpretation (2018)
Journal Article
Ho, V. L., Dorrell, R. M., Keevil, G. M., Burns, A. D., & McCaffrey, W. D. (2018). Scaling analysis of multipulsed turbidity current evolution with application to turbidite interpretation. Journal of geophysical research. C, Oceans, 123(5), 3668-3684. doi:10.1029/2017jc013463

Deposits of submarine turbidity currents, turbidites, commonly exhibit upward‐fining grain size profiles reflecting deposition under waning flow conditions. However, more complex grading patterns such as multiple cycles of inverse‐to‐normal grading a... Read More

Particle Size Distribution Controls the Threshold Between Net Sediment Erosion and Deposition in Suspended Load Dominated Flows (2018)
Journal Article
Dorrell, R. M., Amy, L. A., Peakall, J., & McCaffrey, W. D. (2018). Particle Size Distribution Controls the Threshold Between Net Sediment Erosion and Deposition in Suspended Load Dominated Flows. Geophysical research letters, 45(3), (1443-1452). doi:10.1002/2017gl076489. ISSN 0094-8276

©2018. American Geophysical Union. All Rights Reserved. The central problem of describing most environmental and industrial flows is predicting when material is entrained into, or deposited from, suspension. The threshold between erosional and deposi... Read More

A novel mixing mechanism in sinuous seafloor channels: Implications for submarine channel evolution (2017)
Journal Article
Dorrell, R. M., Peakall, J., Burns, C., & Keevil, G. M. (2018). A novel mixing mechanism in sinuous seafloor channels: Implications for submarine channel evolution. Geomorphology, 303, (1-12). doi:10.1016/j.geomorph.2017.11.008. ISSN 0169-555X

Previous experimental studies of density currents in sinuous seafloor channels have almost exclusively studied hydrodynamics either by considering time independent, instantaneous, flow measurements or by compiling time-averaged flow measurements. Her... Read More

Novel 3D sequence stratigraphic numerical model for syn-rift basins : analysing architectural responses to eustasy, sedimentation and tectonics (2017)
Journal Article
Barrett, B., Hodgson, D. M., Collier, R., & Dorrell, R. (2018). Novel 3D sequence stratigraphic numerical model for syn-rift basins : analysing architectural responses to eustasy, sedimentation and tectonics. Marine and Petroleum Geology, 92, 270-284. doi:10.1016/j.marpetgeo.2017.10.026

Syn-rift clastic sedimentary systems preserve a complicated stratigraphic architecture that records the interplay of tectonics, eustatic sea level and storage and routing of sediments. Previous conceptual models describe and explain changes in deposi... Read More

Pulse propagation in turbidity currents (2017)
Journal Article
Ho, V. L., Dorrell, R. M., Keevil, G. M., Burns, A. D., & McCaffrey, W. D. (2018). Pulse propagation in turbidity currents. Sedimentology, 65(2), (620-637). doi:10.1111/sed.12397. ISSN 0037-0746

© 2017 The Authors. Sedimentology © 2017 International Association of Sedimentologists Submarine turbidity currents are a key mechanism in the transportation of clastic sediments to deep seas. Such currents may initiate with a complex longitudinal fl... Read More

A 3D forward stratigraphic model of fluvial meander-bend evolution for prediction of point-bar lithofacies architecture (2017)
Journal Article
Yan, N., Mountney, N. P., Colombera, L., & Dorrell, R. M. (2017). A 3D forward stratigraphic model of fluvial meander-bend evolution for prediction of point-bar lithofacies architecture. Computers & geosciences, 105, (65-80). doi:10.1016/j.cageo.2017.04.012. ISSN 0098-3004

© 2017 Elsevier Ltd Although fundamental types of fluvial meander-bend transformations – expansion, translation, rotation, and combinations thereof – are widely recognised, the relationship between the migratory behaviour of a meander bend, and its r... Read More

Flow dynamics and mixing processes in hydraulic jump arrays: Implications for channel-lobe transition zones (2016)
Journal Article
Dorrell, R., Peakall, J., Sumner, E. J., Parsons, D. R., Darby, S. E., Wynn, R. B., …Tezcan, D. (2016). Flow dynamics and mixing processes in hydraulic jump arrays: Implications for channel-lobe transition zones. Marine Geology, 381, 181-193. doi:10.1016/j.margeo.2016.09.009

© 2016 The Authors A detailed field investigation of a saline gravity current in the southwest Black Sea has enabled the first complete analysis of three-dimensional flow structure and dynamics of a series of linked hydraulic jumps in stratified, den... Read More

The inherent instability of leveed seafloor channels (2015)
Journal Article
Dorrell, R. M., Burns, A. D., & McCaffrey, W. D. (2015). The inherent instability of leveed seafloor channels. Geophysical research letters, 42(10), (4023-4031). doi:10.1002/2015GL063809. ISSN 0094-8276

©2015. American Geophysical Union. All Rights Reserved. New analytical models demonstrate that under aggradational flow conditions, seafloor channel-levee systems are inherently unstable; both channel area and stability necessarily decrease at long t... Read More

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. (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. JGR. Earth surface, 119(9), 2070-2073. doi:10.1002/2014jf003211

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

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. JGR. Earth surface, 119(9), 2070-2073. doi:10.1002/2013jf002812

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

Optimised mixing and flow resistance during shear flow over a rib roughened boundary (2014)
Journal Article
Arfaie, A., Burns, A., Dorrell, R., Eggenhuisen, J., Ingham, D., & McCaffrey, W. (2014). Optimised mixing and flow resistance during shear flow over a rib roughened boundary. International communications in heat and mass transfer, 58, 54-62. doi:10.1016/j.icheatmasstransfer.2014.08.005

A series of numerical investigations has been performed to study the effect of lower boundary roughness on turbulent flow in a two-dimensional channel. The roughness spacing to height ratio, w/k, has been investigated over the range 0.12 to 402 by va... Read More

Hydrodynamics of fossil fishes (2014)
Journal Article
Fletcher, T., Altringham, J., Peakall, J., Wignall, P., & Dorrell, R. (2014). Hydrodynamics of fossil fishes. Proceedings. the Royal Society. Biological sciences /, 281(1788), 20140703-20140703. doi:10.1098/rspb.2014.0703

From their earliest origins, fishes have developed a suite of adaptations for locomotion in water, which determine performance and ultimately fitness. Even without data from behaviour, soft tissue and extant relatives, it is possible to infer a wealt... Read More

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. C, Oceans, 119(4), (2620-2641). doi:10.1002/2014jc009807. ISSN 2169-9275

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

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. C, Oceans, 119(2), (898-913). doi:10.1002/2013jc009008. ISSN 2169-9275

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