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Special Issue Editor

Dr. Richard Styles

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Guest Editor

U.S. Army Engineer Research and Development Center, Coastal and Hydraulics Laboratory, 3909 Halls Ferry Road, Vicksburg, MS 39180, USA
Interests: sediment transport; hydrodynamic modelling; tidal inlets; wave/current interaction; long-term morphological change; morphodynamic modelling; coastal inlet evolution

Special Issue Information

Dear Colleagues,

Sediment transport processes in combined wave and current flows play an important role in many issues including coastal resiliency, shoreline stability, estuarine dynamics, and biological productivity. New technologies to measure fine-scale processes along with high-fidelity numerical modelling have continued to produce new information on sediment dynamics in shallow water systems. The purpose of this Special Issue is to present the latest theoretical, experimental, observational, or numerical modelling advancements in sediment transport research under combined wave and current flows. The Special Issue will accept submissions on any aspect of combined wave and current flows but is especially interested in receiving papers on the following topics:

Sediment transport processes at high wave and current angles
The effects of waves of finite duration, such as vessel wake, in sediment transport
The interaction between combined flows and sediment in the vicinity of hydraulic structures
Sediment transport in regions where the waves and currents are transitioning such as inlets or deltas
Vegetated regions with combined wave and current flows
Sediment transport in regions with limited sediment supply such as hard bottoms

Dr. Richard Styles
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Journal of Marine Science and Engineering is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

sediment dynamics
combined wave and current flows
bottom boundary layer processes
sediment transport modelling
near-shore processes
turbulence
storm surge
hydraulic structures

Published Papers (2 papers)

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Research

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21 pages, 29496 KiB

Open AccessFeature PaperArticle

Wave-Created Mud Suspensions: A Theoretical Study

by Jochen Kämpf and Paul M. Myrow

J. Mar. Sci. Eng. 2018, 6(2), 29; https://doi.org/10.3390/jmse6020029 - 27 Mar 2018

Cited by 5 | Viewed by 3369

Abstract

We studied wave-created high-density mud suspensions (fluid mud) using a one-dimensional water column (1DV) model that includes k-ε turbulence closure at a high vertical resolution with a vertical grid spacing of 1 mm. The k-ε turbulence model includes two sediment-related dissipation terms associated with vertical density stratification and viscous drag of flows around sediment particles. To this end, the calibrated model reproduces the key characteristics (maximum concentration and thickness) of fluid mud layers created in laboratory experiments over a large range of wave velocities from 10 to 55 cm/s. The findings demonstrate that the equilibrium near-bed mud concentration, C_b, is solely determined from the balance between erosion and deposition fluxes, whereas the thickness of the fluid mud layer is mainly controlled by sediment-induced density stratification, which dissipates turbulence and hence eliminates turbulent sediment diffusivity at the top of the fluid mud layer, the lutocline. Our model stands in contrast to those that suggest that upward sediment diffusion is close to zero at the interface between the fluid mud layer and the overlying fluid. Instead, our model suggests that the upward diffusive flux of fluid mud flows peak at the lutocline and is compensated for enhanced settling fluxes just above it. Our model findings also support the existence of the gelling-ignition process, which is critical for the development of fluid mud beds in modern sedimentary environments. Full article

(This article belongs to the Special Issue Advances in Sediment Transport under Combined Waves and Currents)

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Review

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29 pages, 12866 KiB

Open AccessReview

Role of Upper-Flow-Regime Bedforms Emplaced by Sediment Gravity Flows in the Evolution of Deltas

by Svetlana Kostic, Daniele Casalbore, Francesco Chiocci, Jörg Lang and Jutta Winsemann

J. Mar. Sci. Eng. 2019, 7(1), 5; https://doi.org/10.3390/jmse7010005 - 04 Jan 2019

Cited by 27 | Viewed by 5561

Abstract

Upper-flow-regime bedforms and their role in the evolution of marine and lacustrine deltas are not well understood. Wave-like undulations on delta foresets are by far the most commonly reported bedforms on deltas and it will take time before many of these features get identified as upper-flow-regime bedforms. This study aims at: (1) Providing a summary of our knowledge to date on deltaic bedforms emplaced by sediment gravity flows; (2) illustrating that these features are most likely transitional upper-flow-regime bedforms; and (3) using field case studies of two markedly different deltas in order to examine their role in the evolution of deltas. The study combines numerical analysis with digital elevation models, outcrop, borehole, and high-resolution seismic data. The Mazzarrà river delta in the Gulf of Patti, Italy, is selected to show that upper-flow-regime bedforms in gullies can be linked to the onset, growth, and evolution of marine deltas via processes of gully initiation, filling, and maintenance. Ice-marginal lacustrine deltas in Germany are selected as they illustrate the importance of unconfined upper-flow-regime bedforms in the onset and evolution of distinct delta morphologies under different lake-level trends. Full article

(This article belongs to the Special Issue Advances in Sediment Transport under Combined Waves and Currents)

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