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Journals
Geosciences
Special Issues
Recent Advances on Sediment Transport and River Morphodynamics
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Recent Advances on Sediment Transport and River Morphodynamics

A special issue of Geosciences (ISSN 2076-3263).

Deadline for manuscript submissions: closed (31 March 2023) | Viewed by 14104

Special Issue Editor

Dr. Simona Francalanci

E-Mail Website
Guest Editor
Dipartimento di Ingegneria Civile e Ambientale (DICEA), University of Florence, Florence, Italy
Interests: sediment transport processes; river morphodynamics; riparian vegetation; bank erosion processes; vegetation; experimental and numerical hydraulic modeling

Special Issue Information

Dear Colleagues,

The linkage between sediment transport processes and morphodynamics is one of the most fascinating and challenging topics in river hydraulics, which has drawn the attention of many researchers in the last few decades.

This Special Issue moves from the knowledge of basic processes regarding sediment transport and river morphodynamics towards the most recent advances in this field; contributions on, but not limited to, the following specific subjects are welcome:

  • Sediment transport processes and sediment non-uniformity affecting river morphodynamics;
  • Evolution processes in natural rivers, such as sand and gravel bed rivers, and possible strategies for optimal management (e.g., gravel or sand nourishment, correction of morphology);
  • Morphodynamic processes in meandering and braided rivers;
  • Active dynamics in highly human impacted rivers, and optimal strategies for river restoration;
  • Bank erosion and/or bank accretion, and possible feedbacks with channel evolution;
  • The role of vegetation in shaping the river environment, and possible feedbacks with sediment transport and morphodynamics.

The submitted papers may favor the most suitable research approach or a combination thereof. The theoretical model, field or experimental investigations, and numerical modeling are encouraged; moreover, case studies can be included in the paper to highlight practical applications for river engineers and managers.

Dr. Simona Francalanci
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. Geosciences 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 1800 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 transport 
  • Erosion and sedimentation processes 
  • Gravel and sand-bed rivers 
  • Meandering river 
  • Braided river 
  • Bank erosion processes 
  • Morphodynamic modeling 
  • Vegetation dynamics

Published Papers (4 papers)

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Research

14 pages, 5042 KiB  
Article
Three-Dimensional Numerical Modeling of Flow Hydrodynamics and Cohesive Sediment Transport in Enid Lake, Mississippi
by Xiaobo Chao, A. K. M. Azad Hossain, Mohammad Z. Al-Hamdan, Yafei Jia and James V. Cizdziel
Geosciences 2022, 12(4), 160; https://0-doi-org.brum.beds.ac.uk/10.3390/geosciences12040160 - 02 Apr 2022
Viewed by 2264
Abstract
Enid Lake is one of the largest reservoirs located in Yazoo River Basin, the largest basin in the state of Mississippi. The lake was impounded by Enid Dam on the Yocona River in Yalobusha County and covers an area of 30 square kilometers. [...] Read more.
Enid Lake is one of the largest reservoirs located in Yazoo River Basin, the largest basin in the state of Mississippi. The lake was impounded by Enid Dam on the Yocona River in Yalobusha County and covers an area of 30 square kilometers. It provides significant natural and recreational resources. The soils in this region are highly erodible, resulting in a large amount of fine-grained cohesive sediment discharged into the lake. In this study, a 3D numerical model was developed to simulate the free surface hydrodynamics and transportation of cohesive sediment with a median diameter of 0.0025 to 0.003 mm in Enid Lake. Flow fields in the lake are generally induced by wind and upstream river inflow, and the sediment is also introduced from the inflow during storm events. The general processes of sediment flocculation and settling were considered in the model, and the erosion rate and deposition rate of cohesive sediment were calculated. In this model, the sediment simulation was coupled with flow simulation. In this research, remote sensing technology was applied to estimate the sediment concentration at the lake surface and provide validation data for numerical model simulation. The model results and remote sensing data help us to understand the transport, deposition and resuspension processes of cohesive sediment in large reservoirs due to wind-induced currents and upstream river flows. Full article
(This article belongs to the Special Issue Recent Advances on Sediment Transport and River Morphodynamics)
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23 pages, 8108 KiB  
Article
Prototype Scale Evaluation of Non-Newtonian Algorithms in HEC-RAS: Mud and Debris Flow Case Studies of Santa Barbara and Brumadinho
by Stanford Gibson, Leonardo Zandonadi Moura, Cameron Ackerman, Nikolas Ortman, Renato Amorim, Ian Floyd, Moosub Eom, Calvin Creech and Alejandro Sánchez
Geosciences 2022, 12(3), 134; https://0-doi-org.brum.beds.ac.uk/10.3390/geosciences12030134 - 14 Mar 2022
Cited by 15 | Viewed by 4292
Abstract
The Santa Barbara post-wildfire debris flows and the Brumadinho tailing-dam failure were two of the most catastrophic flood events of the late 2010s. Both these events carried so much solid-phase material, that classic, clear-water, flood risk approaches cannot replicate them, or forecast other [...] Read more.
The Santa Barbara post-wildfire debris flows and the Brumadinho tailing-dam failure were two of the most catastrophic flood events of the late 2010s. Both these events carried so much solid-phase material, that classic, clear-water, flood risk approaches cannot replicate them, or forecast other events like them. This case study applied the new non-Newtonian features in HEC-RAS 6.1 to these two events, testing the most widely used flood risk model on the two most common mud and debris flow hazards (post-wildfire floods and mine tailing dam failures). HEC-RAS reproduced the inundation boundaries and the event timing (where available) for both events. The ratio between the largest debris flow clasts and the channel size, parametric trade-offs, the “convex” alluvial plain topography, and the stochasticity introduced by urban infrastructure made the Santa Barbara modeling more difficult and less precise than Brumadinho. Despite these challenges, the results provide prototype scale validation and verification of these new tools in this widely applied flood risk model. Full article
(This article belongs to the Special Issue Recent Advances on Sediment Transport and River Morphodynamics)
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16 pages, 3704 KiB  
Article
Comparison between Calculation and Measurement of Total Sediment Load: Application to Streams of NE Greece
by Loukas Avgeris, Konstantinos Kaffas and Vlassios Hrissanthou
Geosciences 2022, 12(2), 91; https://0-doi-org.brum.beds.ac.uk/10.3390/geosciences12020091 - 17 Feb 2022
Viewed by 2028
Abstract
Sediment transport and stream discharge are two of the natural procedures which affect the hydromorphological profile of a watercourse. Measurements of water discharge, bed load transport rate and suspended sediment concentration were conducted in Kosynthos River and Kimmeria Torrent –two intermittent streams– in [...] Read more.
Sediment transport and stream discharge are two of the natural procedures which affect the hydromorphological profile of a watercourse. Measurements of water discharge, bed load transport rate and suspended sediment concentration were conducted in Kosynthos River and Kimmeria Torrent –two intermittent streams– in north-eastern Greece. The total sediment concentration was calculated, in both streams, by means of various nonlinear regression equations and by means of the formulas of Yang, after calibrating the coefficients of the formulas. In the computations according to the Yang formulas, two different states were examined regarding the incipient motion: one considering and one disregarding the critical conditions. The results obtained from Yang’s multiple regression-derived equations had a better fit compared to the original equations and were acceptable in both cases. Ultimately, two counterparts of Yang’s stream sediment transport formulas were constructed and made available to the readership. The comparison between the calculated and measured total sediment concentrations was achieved by means of several statistical criteria. The results indicate that the modified formulas of Yang can be successfully used for the determination of the total sediment concentration in Kosynthos River and Kimmeria Torrent. Full article
(This article belongs to the Special Issue Recent Advances on Sediment Transport and River Morphodynamics)
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23 pages, 5770 KiB  
Article
Stabilization of the Lower Jamuna River in Bangladesh—Hydraulic and Morphological Assessment
by Sanjay Giri, Angela Thompson, Gennady Donchyts, Knut Oberhagemann, Erik Mosselman and Jahangir Alam
Geosciences 2021, 11(9), 389; https://0-doi-org.brum.beds.ac.uk/10.3390/geosciences11090389 - 14 Sep 2021
Cited by 2 | Viewed by 4143
Abstract
This paper presents a hydraulic and morphological analysis of the Lower Jamuna in Bangladesh with a focus on two key bifurcations that are important for stabilization of the Lower Jamuna reach. We used ground measurements, historical data, multispectral satellite images from various sources [...] Read more.
This paper presents a hydraulic and morphological analysis of the Lower Jamuna in Bangladesh with a focus on two key bifurcations that are important for stabilization of the Lower Jamuna reach. We used ground measurements, historical data, multispectral satellite images from various sources as well as numerical models. We carried out hydraulic analyses of the changes and their peculiarities, such as flow distributions at the bifurcation and hysteresis of the stage–discharge relationships. We supplemented our analysis by using numerical models to simulate discharge distribution at the bifurcations under various flow and riverbed conditions. We developed an advanced and automated satellite image processing application for the Lower Jamuna, referred to as Morphology Monitor (MoMo), using the Google Earth Engine. MoMo was found to be an effective tool for a rapid assessment and analysis of the changes in deep-channel and sandbar areas. It is also useful for monitoring and assessing riverbank and char erosion and accretion, which is important not only for morphological but also ecological impact assessment. The application can be adapted as an operational tool as well. Furthermore, we assessed the evolution of deep channels at the bifurcations based on regularly and extensively measured bathymetry data. The analysis was carried out in complement with morphological modeling, particularly for short-term prediction. In this paper we present the major findings of the analysis and discuss their implications for adaptive river management. Full article
(This article belongs to the Special Issue Recent Advances on Sediment Transport and River Morphodynamics)
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