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Journal articles on the topic 'Sediment Transport Dynamics'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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1

Shimozono, Takenori, Takashi Yamano, and Yoshimitsu Tajima. "IN-SITU OBSERVATION OF HYDRO-SEDIMENT DYNAMICS ON STEEPLY SLOPING SEABED IN DEEP WATER." Coastal Engineering Proceedings, no. 38 (May 29, 2025): 62. https://doi.org/10.9753/icce.v38.sediment.62.

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Evaluating the local sediment balance is a crucial component of effective coastal erosion management. Traditionally, we set a depth of closure in a target coastal area, representing the point beyond which sediment transport is assumed to be minimal. This concept helps us maintain the assumption that the sediment budget remains balanced landward. However, during extreme events, sediment transport can exceed this depth, leading to a loss of coastal sediments. This scenario is particularly relevant for coasts adjacent to a steep offshore slope, where sediments released onto the slope may never re

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2

Thunyaphun, Tussanun, Shinya Umeda, and Masatoshi Yuhi. "Sediment Budget and Net Sediment Transport on a Coast Dominated by Waves and Offshore Currents: A Case Study on the Ishikawa Coast and Its Surrounding Areas in Japan." Journal of Marine Science and Engineering 11, no. 3 (2023): 621. http://dx.doi.org/10.3390/jmse11030621.

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This study discusses the coastal sediment budget for the Ishikawa coast using 12 years of observational datasets; it involves an understanding the local and regional sediment dynamics, the intensity of the transport processes in the region, and sediment supply from a local river. Although alongshore sediment transport and sediment budgets have been analyzed in previous studies, only a few conducted cross-shore sediment transport evaluations. The concentration of suspended sediments will be determined in this study, taking into account the influence of waves that are associated with the coastal

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3

Carrillo, Ricardo, and Luca Mao. "Coupling Sediment Transport Dynamics with Sediment and Discharge Sources in a Glacial Andean Basin." Water 12, no. 12 (2020): 3452. http://dx.doi.org/10.3390/w12123452.

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Suspended and bedload transport dynamics on rivers draining glacierized basins depend on complex processes of runoff generation together with the degree of sediment connectivity and coupling at the basin scale. This paper presents a recent dataset of sediment transport in the Estero Morales, a 27 km2 glacier-fed basin in Chile where suspended sediment concentration (SSC) and bedload (BL) fluxes have been continuously monitored during two ablation seasons (2014–2015 and 2015–1016). The relationship between discharge and SSC depends on the origin of runoff, which is higher during glacier melting

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Wu, Yuxi, Xiwen Li, Enjin Zhao, et al. "Analysis of Downstream Sediment Transport Trends Based on In Situ Data and Numerical Simulation." Journal of Marine Science and Engineering 12, no. 11 (2024): 1982. http://dx.doi.org/10.3390/jmse12111982.

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This study conducted an in-depth analysis of the sediment dynamics in the lower reaches of the Changhua River and its estuary on Hainan Island. Through field collection of topographic data and sediment sampling, combined with advanced computational techniques, the study explored the transport pathways and depositional patterns of sediments. The grain size trend analysis (GSTA) method was utilized, in conjunction with the Flemming triangle diagram method, to classify the dynamic environment of the sediments. Furthermore, hydrodynamic modeling results were integrated to further analyze the trans

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Mėžinė, Jovita, Christian Ferrarin, Diana Vaičiūtė, Rasa Idzelytė, Petras Zemlys, and Georg Umgiesser. "Sediment Transport Mechanisms in a Lagoon with High River Discharge and Sediment Loading." Water 11, no. 10 (2019): 1970. http://dx.doi.org/10.3390/w11101970.

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The aim of this study was to investigate the sediment dynamics in the largest lagoon in Europe (Curonian Lagoon, Lithuania) through the analysis of in situ data and the application of a sediment transport model. This approach allowed to identify the propagation pathway of the riverine suspended sediments, to map erosion-accumulation zones in the lagoon and calculate the sediment budget over a 13-year-long simulation. Sampled suspended sediment concentration data are important for understanding the characteristics of the riverine and lagoon sediments, and show that the suspended organic matter

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Blom, G., and H. J. Winkels. "Modelling sediment accumulation and dispersion of contaminants in Lake Ijsselmeer (The Netherlands)." Water Science and Technology 37, no. 6-7 (1998): 17–24. http://dx.doi.org/10.2166/wst.1998.0730.

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In this study two models are integrated for the simulation of sediment distribution and quality in the Lake IJsselmeer area. STRESS-2d, a two dimensional dynamic model for simulation of sediment transport due to resuspension, erosion, sedimentation and horizontal advection and dispersion is used to simulate the sediment transport dynamics for a period of one year. The model is calibrated on water level, suspended solids concentration and sedimentation flux measurements. The model has a high spatial and temporal resolution. The model DIASPORA, which is based on STRESS-2d results, simulates the

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Kabir, M. A., D. Dutta, and S. Hironaka. "Process-based distributed modeling approach for analysis of sediment dynamics in a river basin." Hydrology and Earth System Sciences 15, no. 4 (2011): 1307–21. http://dx.doi.org/10.5194/hess-15-1307-2011.

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Abstract. Modeling of sediment dynamics for developing best management practices of reducing soil erosion and of sediment control has become essential for sustainable management of watersheds. Precise estimation of sediment dynamics is very important since soils are a major component of enormous environmental processes and sediment transport controls lake and river pollution extensively. Different hydrological processes govern sediment dynamics in a river basin, which are highly variable in spatial and temporal scales. This paper presents a process-based distributed modeling approach for analy

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Kabir, M. A., D. Dutta, and S. Hironaka. "Process-based distributed modeling approach for analysis of sediment dynamics in a river basin." Hydrology and Earth System Sciences Discussions 7, no. 4 (2010): 5685–735. http://dx.doi.org/10.5194/hessd-7-5685-2010.

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Abstract. Modeling of sediment dynamics for developing best management practices of reducing soil erosion and of sediment control has become essential for sustainable management of watersheds. Precise estimation of sediment dynamics is very important since soils are a major component of enormous environmental processes and sediment transport controls lake and river pollution extensively. Different hydrological processes govern sediment dynamics in a river basin, which are highly variable in spatial and temporal scales. This paper presents a process-based distributed modeling approach for analy

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9

Ubah, Joseph Ikenna, Louis Chukwuemeka Orakwe, Nelson Mbanefo Okoye, and Kingsely Nnaemeka Ogbu. "River Sediment Transport Modeling of Ele River using Computational Fluid Dynamics Model of COMSOL Multiphysics Program." ASM Science Journal 16 (July 15, 2021): 1–7. http://dx.doi.org/10.32802/asmscj.2021.562.

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Excessive sediment deposition results to hydro-ecological problems particularly for shallow streams that experience significant point-source pollution. In recent times, models have been employed to investigate sediment transport in river systems. The aim of this research work is to model sediment transport of Ele River using particle tracing methodology. The governing equations of fluid flow and particle movement were modelled using COMSOL Multiphysics 5.3a. The result was validated using experimental data and the model result showed good agreement with coefficient of determination of 0.99. St

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Taslin, Puteri Nurfarah Adawiyah, Siti Nur Hanani Zainuddin, Aliashim Albani, Khairul Nizam Abdul Maulud, Mardiha Mokhtar, and Effi Helmy Ariffin. "Wave-driven process influencing aeolian sediment transport in beach dune systems: A review." Maritime Technology and Research 7, no. 4 (2025): 276936. https://doi.org/10.33175/mtr.2025.276936.

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Aeolian processes involve wind-driven emission, transport, and deposition of sand and dust, with sediment transport serving as a key source of sediment for coastal sand dunes. However, beaches today are increasingly out of equilibrium due to human activities, such as coastal development and climate change, which disrupt natural sediment dynamics and lead to localized erosion and accretion along coasts. This imbalance calls for comprehensive strategies to restore and maintain beach system stability. As predicting sediment transport rates is crucial for determining dune sediment budgets, it is e

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Smith, Ben, Robert Mahon, Tyler Lincoln, et al. "Wave dynamics and sediment transport in Great Salt Lake." Geosites 51 (January 14, 2024): 1–18. http://dx.doi.org/10.31711/ugap.v51i.139.

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Great Salt Lake is a natural laboratory to test and refine ideas about the relationship between sediment transport by waves and the characteristics of shoreline carbonate sediments, in particular ooid sands and microbialite mounds. In this chapter, we present a year-long series of wave data collected from July 2021 through June 2022 and use these wave data to assess the performance of a US Army Corps of Engineers wave model previously used to estimate bed shear velocity and intermittency of sediment transport in Great Salt Lake (Smith and others, 2020). We use this model-data comparison to ide

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Andiani, Anak Agung Eka, I. Gusti Ayu Istri Pradnyandari Dewi, Ni Putu Pradnya Megasari, et al. "Characteristics of beach and foreshore sediments at the coastal of Carita Beach, Pandeglang, Banten." BIO Web of Conferences 168 (2025): 01010. https://doi.org/10.1051/bioconf/202516801010.

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Coastal morphology and dynamics influence the sediment transport process from land to coast and sea. A study of the distribution of sediment types was carried out on the beach and foreshore of Carita Beach, Pandeglang Banten, to provide an overview of the sediment transport and deposition processes based on sediment grain size distribution. Sediment samples were collected: nine from the foreshore and six from the beach. The sediment grain size was analysed using the fractionation method with sieving and pipetting, and the organic material content was analysed using the Loss on Ignition (LOI) m

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13

Hansen, Jeff, and Michael Cuttler. "SEDIMENT TRANSPORT DYNAMICS ACROSS SHORE-ATTACHED SAND RIDGES." Coastal Engineering Proceedings, no. 38 (May 29, 2025): 72. https://doi.org/10.9753/icce.v38.sediment.72.

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As sea levels rise many coastal areas are predicted to experience beach erosion. However, this erosion can potentially be partially mitigated by natural onshore transport from offshore sediment reserves. While offshore sediment reserves have been recognized as a potential source of sediment, the mechanisms by which this sediment makes its way toward the coast (often up- slope) where it can be further transported onto beach has been less well studied. Further the non-linear wave motions that have primarily been hypothesized to drive onshore transport (e.g. Elgar et al., 2001) are poorly resolve

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Kurniawan, Muhammad Hafiz, S. B. Soeryamassoeka, and Umar Umar. "Implementation of Mathematical Modelling on The Case of Melawi River Sediment Transport through Van Rijn Method." Jurnal Teknik Sipil 25, no. 2 (2025): 2061–69. https://doi.org/10.26418/jts.v25i2.86488.

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This study examines sediment transport dynamics in the Melawi River, West Kalimantan, Indonesia, in response to illegal gold mining and uncontrolled sand mining activities. These activities have significantly increased sedimentation rates, negatively impacting the river ecosystem and local communities. This study used the Van Rijn method to analyse bottom sediment transport and suspended sediment transport at 12 monitoring sites along 900 km of the river. This study aims to analyse the rate of sediment transport and suspended sediment transport using the Van Rijn method. To plot the flow veloc

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Shen, Hung Tao. "River Ice Effects on Sediment Transport and Channel Morphology—Progress and Research Needs." Glacies 2, no. 1 (2025): 2. https://doi.org/10.3390/glacies2010002.

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Sediment transport in alluvial channels has a long history of intensive research. River ice could affect sediment transport and channel morphology through the impact of various dynamic and thermal ice processes. However, studies on sediment transport under the influence of ice have been minimal until recent years. This phenomenon was partially due to the complicated interactions between ice, flow, and sediment dynamics, which require a good understanding of the river ice process, in addition to the difficult field data collection conditions. This paper reviews the progress and needs of river i

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Boix-Fayos, C., E. Nadeu, J. M. Quiñonero, M. Martínez-Mena, M. Almagro, and J. de Vente. "Coupling sediment flow-paths with organic carbon dynamics across a Mediterranean catchment." Hydrology and Earth System Sciences Discussions 11, no. 5 (2014): 5007–36. http://dx.doi.org/10.5194/hessd-11-5007-2014.

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Abstract. Terrestrial sedimentation buries large amounts of organic carbon (OC) annually, contributing to the terrestrial carbon sink. The temporal significance of this sink will strongly depend on the attributes of the depositional environment, but also on the characteristics of the OC reaching these sites and its stability upon deposition. The goal of this study was to characterise the OC during transport and stored in the depositional settings of a medium sized catchment (111 km2) in SE Spain, to better understand how soil erosion and sediment transport processes determine catchment scale O

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17

Zang, Zhengchen, Z. George Xue, Kehui Xu, et al. "A Two Decadal (1993–2012) Numerical Assessment of Sediment Dynamics in the Northern Gulf of Mexico." Water 11, no. 5 (2019): 938. http://dx.doi.org/10.3390/w11050938.

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We adapted the coupled ocean-sediment transport model to the northern Gulf of Mexico to examine sediment dynamics on seasonal-to-decadal time scales as well as its response to decreased fluvial inputs from the Mississippi-Atchafalaya River. Sediment transport on the shelf exhibited contrasting conditions in a year, with strong westward transport in spring, fall, and winter, and relatively weak eastward transport in summer. Sedimentation rate varied from almost zero on the open shelf to more than 10 cm/year near river mouths. A phase shift in river discharge was detected in 1999 and was associa

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Vyawahare, Rutuja, and Sandip Tatewar. "A Comprehensive Review on the Role of Vegetation in Open Channels and its Impact on Sediment Transport and Flow Dynamics." EPJ Web of Conferences 328 (2025): 01018. https://doi.org/10.1051/epjconf/202532801018.

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This paper provides a comprehensive review of recent research on the role of vegetation in open channels and its impact on sediment transport and flow dynamics. Vegetation plays a crucial role in influencing flow characteristics and sediment deposition, with factors such as vegetation density, porosity, shape, flexibility, and height significantly affecting flow turbulence and sediment transport. Different vegetation arrangements, including patches, are found to alter sediment deposition rates and turbulence structure. The review examines laboratory, field, and modelling studies that investiga

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19

Masselink, R., A. J. A. M. Temme, R. Giménez, J. Casalí, and S. D. Keesstra. "Assessing hillslope-channel connectivity in an agricultural catchment using rare-earth oxide tracers and random forests models." Cuadernos de Investigación Geográfica 43, no. 1 (2017): 17. http://dx.doi.org/10.18172/cig.3169.

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Soil erosion from agricultural areas is a large problem, because of off-site effects like the rapid filling of reservoirs. To mitigate the problem of sediments from agricultural areas reaching the channel, reservoirs and other surface waters, it is important to understand hillslope-channel connectivity and catchment connectivity. To determine the functioning of hillslope-channel connectivity and the continuation of transport of these sediments in the channel, it is necessary to obtain data on sediment transport from the hillslopes to the channels. Simultaneously, the factors that influence sed

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Ibrahim, Ahmed S. A., Anas M. El-Molla, and Hany G. I. Ahmed. "Impacts of Coastal Structures on Sediment Transport: A Case Study of Damietta, Egypt." Naše more 71, no. 2 (2024): 45–53. http://dx.doi.org/10.17818/nm/2024/2.1.

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Within the framework of safeguarding Egypt’s coastal lowlands, which face escalating susceptibility to both climate change and human interventions, this study aims to provide a comprehensive analysis of sediment transport dynamics and their implications, with Damietta serving as a case study. To achieve this, a thorough review of the existing literature on sediment transport dynamics was conducted. MIKE21 Shoreline Morphology (MIKE21 SM) model was employed to simulate longshore sediment transport (LST) dynamics both before and after the construction of Damietta Port (DP). Analysis of the model

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Zhong, Yi, Jun Du, Yongzhi Wang, et al. "Modeling the Impacts of Land Reclamation on Sediment Dynamics in a Semi-Enclosed Bay." Journal of Marine Science and Engineering 12, no. 9 (2024): 1633. http://dx.doi.org/10.3390/jmse12091633.

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Semi-enclosed bays are significantly influenced by the interactions between land and sea, as well as human activities. One notable human activity, land reclamation, impacts water exchange within these bays. However, the variability of sediment transport and cross-bay transport following reclamation remains poorly understood. This study aims to enhance the understanding of sediment dynamics and the responses of cross-bay transport to reclamation. A well-validated three-dimensional numerical model was developed in the Laizhou Bay (LB). Following reclamation, tidal currents suspended sediment con

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Boix-Fayos, C., E. Nadeu, J. M. Quiñonero, M. Martínez-Mena, M. Almagro, and J. de Vente. "Sediment flow paths and associated organic carbon dynamics across a Mediterranean catchment." Hydrology and Earth System Sciences 19, no. 3 (2015): 1209–23. http://dx.doi.org/10.5194/hess-19-1209-2015.

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Abstract. Terrestrial sedimentation buries large amounts of organic carbon (OC) annually, contributing to the terrestrial carbon sink. The temporal significance of this sink will strongly depend on the attributes of the depositional environment, but also on the characteristics of the OC reaching these sites and its stability upon deposition. The goal of this study was to characterise the OC during transport and stored in the depositional settings of a medium-sized catchment (111 km2) in SE Spain, to better understand how soil erosion and sediment transport processes determine catchment-scale O

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Promkotra, Sarunya. "Dynamics of Suspended Sediments Related to Fine Particles in Lower Mekong River." Applied Mechanics and Materials 446-447 (November 2013): 1528–33. http://dx.doi.org/10.4028/www.scientific.net/amm.446-447.1528.

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Analytical results are considered the factors of suspended sediment concentration, fall velocity, dimensionless shear stress, transportation rate and stream discharge. As a result of suspended sediments of Loei, Huang and Mekong River, fine particles account for the applicability in sediment deposits. Floating suspended sediments explicit more clay minerals than suspended sediments. Suspended sediment concentration (SSC) in the estuarine of Loei River and Huang River are moderately less than Mekong River. Flow directions of the interconnected rivers to the mainstream-Mekong River lead to the q

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Kelderman, P., P. De Rozari, S. Mukhopadhyay, and R. O. Ang'weya. "Sediment dynamics in shallow Lake Markermeer, The Netherlands: field/laboratory surveys and first results for a 3-D suspended solids model." Water Science and Technology 66, no. 9 (2012): 1984–90. http://dx.doi.org/10.2166/wst.2012.325.

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In 2007/08, a study was undertaken on sediment dynamics in shallow Lake Markermeer, The Netherlands. Firstly, the sediment characteristics median grain size, mud content and loss on ignition showed a spatial as well as water depth related pattern indicating wind-induced sediment transport. Sediment dynamics were investigated in a sediment trap field survey at two stations. Sediment yields, virtually all coming from sediment resuspension, were significantly correlated with wind speeds. Resuspension rates for Lake Markermeer were very high, viz. ca. 1,000 g/m2day as an annual average, leading to

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Sokolov, Dmitriy I., Oxana N. Erina, Maria A. Tereshina, and Valeriy V. Puklakov. "Impact Of Mozhaysk Dam On The Moscow River Sediment Transport." GEOGRAPHY, ENVIRONMENT, SUSTAINABILITY 13, no. 4 (2020): 24–31. http://dx.doi.org/10.24057/2071-9388-2019-150.

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Sediments are an essential part of the aquatic environment that define its transformation and development. The construction of dams results in severe changes in sediment fluxes. This study aims to assess how the sediment load of the upper Moskva River is affected by the Mozhaysk Dam flow regulation and to estimate its dynamics over the years of the reservoir’s existence. Our analysis of the 1968, 2012 and 2016 detailed field data shows a 20-40% decrease in the proportion of the spring flood in the annual sediment load into the reservoir, which is caused by changes in the streamflow regime of t

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Campforts, Benjamin, Charles M. Shobe, Philippe Steer, Matthias Vanmaercke, Dimitri Lague, and Jean Braun. "HyLands 1.0: a hybrid landscape evolution model to simulate the impact of landslides and landslide-derived sediment on landscape evolution." Geoscientific Model Development 13, no. 9 (2020): 3863–86. http://dx.doi.org/10.5194/gmd-13-3863-2020.

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Abstract. Landslides are the main source of sediment in most mountain ranges. Rivers then act as conveyor belts, evacuating landslide-derived sediment. Sediment dynamics are known to influence landscape evolution through interactions among landslide sediment delivery, fluvial transport and river incision into bedrock. Sediment delivery and its interaction with river incision therefore control the pace of landscape evolution and mediate relationships among tectonics, climate and erosion. Numerical landscape evolution models (LEMs) are well suited to study the interactions among these surface pr

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Junakova, N., J. Junak, and M. Balintova. "The effect of physicochemical properties of bottom sediments on nitrogen and phosphorus sorption." IOP Conference Series: Materials Science and Engineering 1252, no. 1 (2022): 012059. http://dx.doi.org/10.1088/1757-899x/1252/1/012059.

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Abstract River and reservoir bottom sediments are characterized by their physical and chemical properties, which affect the quality of water and deposited sediments in reservoirs. The grain composition of sediments is their fundamental property that determines the detachment, transport and sedimentation of sediments. In addition to understanding the dynamics of transport and distribution of particles in the watershed, the granularity is closely related to the mineral and chemical composition of the sediment and plays an important role in terms of its ability to bind contaminants. Other importa

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Ferreira, Ana Margarida, Carlos Coelho, and Paulo A. Silva. "MODELLING OF NEARSHORE NOURISHMENTS IN THE MEDIUM-TERM." Coastal Engineering Proceedings, no. 38 (May 29, 2025): 16. https://doi.org/10.9753/icce.v38.papers.16.

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Nearshore nourishments are a common technique to artificially feed coastal zones. This approach involves introducing larger volumes of sediments in the submerged area of the coastal zone, creating an artificial sandbar. The performance and longevity of a nourishment depend on sediment transport processes that distribute the sediments alongshore and across the beach profile. Numerical modelling tools can assist in designing the nourishment interventions, but due to the complexity of describing multiple coastal processes across different time-scales, cross- shore and longshore sediment transport

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Aagaard, Troels, Joost Brinkkemper, Drude F. Christensen, Michael G. Hughes, and Gerben Ruessink. "Surf Zone Turbulence and Suspended Sediment Dynamics—A Review." Journal of Marine Science and Engineering 9, no. 11 (2021): 1300. http://dx.doi.org/10.3390/jmse9111300.

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The existence of sandy beaches relies on the onshore transport of sand by waves during post-storm conditions. Most operational sediment transport models employ wave-averaged terms, and/or the instantaneous cross-shore velocity signal, but the models often fail in predictions of the onshore-directed transport rates. An important reason is that they rarely consider the phase relationships between wave orbital velocity and the suspended sediment concentration. This relationship depends on the intra-wave structure of the bed shear stress and hence on the timing and magnitude of turbulence producti

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WANG, XU-MING, JIE HUO, SHI-FENG CAO, and RUI HAO. "SCALING BEHAVIOR OF SEDIMENT TRANSPORT INDUCED BY WATER DIVERSION IN RIVER NETWORKS." Modern Physics Letters B 25, no. 16 (2011): 1359–75. http://dx.doi.org/10.1142/s0217984911026334.

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A sediment transport dynamic model, based on the consideration of streams confluence and/or diversion, is proposed to investigate the influence of water diversion on the mainstream. The simulated results accord qualitatively with the observed or experimental phenomenon in the Yellow River, that is, sedimentation will get more in the main channel as the water is diverted. Some interesting scaling laws describing the behavior of the erosion–sedimentation state in the process of sediment transport are observed, which may help us to get some understandings of sediment transport dynamics in a river

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Blenkinsopp, Chris, Paul Bayle, Tom Baldock, Daniel Conley, and Gerd Masselink. "REPEATABILITY OF MORPHOLOGICAL CHANGE ON A SANDY BEACH ACROSS MULTIPLE TIMESCALES." Coastal Engineering Proceedings, no. 37 (September 1, 2023): 1. http://dx.doi.org/10.9753/icce.v37.sediment.1.

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The swash zone is a highly dynamic region of the nearshore in terms of both hydro- and sediment dynamics. Previous work has demonstrated that the majority of swash events transport only small amounts of sediment and net beachface volume change over several hours tends to be small. However, a small number of individual swash events can deposit or remove hundreds of kilograms of sediment per metre width of beach. These events are typically associated with swash flows that involve one or more highly turbulent swash-swash interactions, causing enhanced suspension and transport of sediment (Blenkin

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Liu, Jie. "Study on the characteristics and influencing factors of suspended sediment front in the eastern Qiongzhou Strait." E3S Web of Conferences 630 (2025): 02004. https://doi.org/10.1051/e3sconf/202563002004.

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The eastern shoal of the Qiongzhou Strait is considered a crucial potential sand resource, and its sediment dynamics are of great interest for both environmental and economic reasons. To better understand these dynamics, this study employed the ROMS (Regional Ocean Modeling System) ocean model to simulate suspended sediment transport during the winter and summer of 2019. The model incorporated a variety of environmental factors, including wave conditions, tidal forces, currents, temperature, and salinity, to capture the complex interactions affecting sediment movement. The simulation results r

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Suzuki, Takayuki, Tomoki Hayashi, and Mustarakh Gelfi. "FIELD OBSERVATIONS OF SEDIMENT PARTICLE MOVEMENTS IN THE SWASH ZONE USING FLUORESCENT SAND." Coastal Engineering Proceedings, no. 37 (October 2, 2023): 7. http://dx.doi.org/10.9753/icce.v37.sediment.7.

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Many studies have been conducted to investigate sediment transport mechanisms in and out of surf zones. However, detailed studies on sediment transport dynamics that track the movement of each sediment particle in the swash zone are limited. In this study, fluorescent sand tracers were introduced into the surf and swash zones, and sand in the swash zone was sampled every few hours. In addition, the currents and wave heights were observed to investigate the sediment movement dynamics in the swash zone.

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Frank-Gilchrist, Donya P., Allison Penko, and Joseph Calantoni. "Investigation of Sand Ripple Dynamics with Combined Particle Image and Tracking Velocimetry." Journal of Atmospheric and Oceanic Technology 35, no. 10 (2018): 2019–36. http://dx.doi.org/10.1175/jtech-d-18-0054.1.

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AbstractAccurately assessing the response of sediments to oscillatory flows requires high-resolution fluid velocity and sediment transport measurements at the fluid–sediment interface. Fluid and sediment grain velocities were measured simultaneously with combined particle image and tracking velocimetry under oscillatory flows over movable sand ripples. Three high-speed cameras equipped with varying optical filters were used to distinguish between fluorescent fluid tracers and the grains, from which the fluid and grain velocities were determined, respectively. Individual grains were tracked dur

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Magyar, M. I., V. G. Mitchell, A. R. Ladson, and C. Diaper. "An investigation of rainwater tanks quality and sediment dynamics." Water Science and Technology 56, no. 9 (2007): 21–28. http://dx.doi.org/10.2166/wst.2007.738.

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Rainwater tanks are being introduced into urban areas in Australia to supplement centralised potable supply systems. A pilot scale tank study and a full-scale field tank study found that heavy metal concentrations in water samples taken from the tank's supply point can, in some cases, exceed levels recommended by guidelines. Both studies also found very high concentrations of heavy metals in the sediments accumulated at the base of rainwater tanks. Laboratory experiments are underway to investigate sediment transport processes within a full-scale tank. Preliminary results demonstrate the effec

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Baniya, Mahendra B., Takashi Asaeda, Takeshi Fujino, Senavirathna M. D. H. Jayasanka, Guligena Muhetaer, and Jinghao Li. "Mechanism of Riparian Vegetation Growth and Sediment Transport Interaction in Floodplain: A Dynamic Riparian Vegetation Model (DRIPVEM) Approach." Water 12, no. 1 (2019): 77. http://dx.doi.org/10.3390/w12010077.

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The ecological dynamics of riparian areas interact with sediment transport in river systems, which plays an active role in riparian vegetation growth in the floodplain. The fluvial dynamics, hydraulics, hydro-meteorological and geomorphological characteristics of rivers are associated with sediment transport in river systems and around the riparian area. The flood disturbance, sediment with nutrients and seeds transported by river, sediment deposition, and erosion phenomena in the floodplain change the bare land area to vegetation area and vice versa. The difference in riparian vegetation area

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Alhusban, Zaid. "Studying sediment transport dynamics by using the Smart sphere." International Journal of Energetica 5, no. 1 (2020): 01. http://dx.doi.org/10.47238/ijeca.v5i1.122.

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A new method is introduced by using high precision accelerometer and gyroscope micro-electromechanical sensors (MEMS), which can record Lagrangian observations of sediments and shed light into the dynamics of sediment transport processes at above threshold conditions. The sensor can be used under a range of well-controlled flow conditions and can record measurements at high frequency (200 Hz), which can be used at the field. The smart sphere performance was evaluated by comparing its rotation and acceleration readings from the sensors to the video recordings of both top and underwater high-spe

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Ziegler, C. Kirk, and Chantell F. Owen. "IMPROVEMENT OF SEDIMENT TRANSPORT DYNAMICS IN HSPF." Proceedings of the Water Environment Federation 2002, no. 2 (2002): 1865–73. http://dx.doi.org/10.2175/193864702785664851.

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Vijverberg, Thomas, Michiel Reneerkens, Han Winterwerp, Olaf Scholl, and Y. Haruna. "SEDIMENT DYNAMICS IN LAGOS HARBOUR - RECONNAISSANCE ON EFFECTS OF DREDGING." Coastal Engineering Proceedings 1, no. 33 (2012): 75. http://dx.doi.org/10.9753/icce.v33.sediment.75.

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Due to economic growth, Lagos Harbour is expanding. Capital dredging is needed to allow larger vessels to call the port. As harbour siltation is already a problem, increase of maintenance dredging is a worry. In the past no data was available to understand the hydraulics and sediment transport to estimate maintenance dredging volumes. This paper presents the reconnaissance of the sediment dynamics in the harbour, based on field data and MIKE21 model simulations. Measurements of sediment concentration, salinity and flow velocity show that estuarine circulation occurs, transporting sediment from

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Liu, Yuanhong, Corey D. Wallace, Yaoquan Zhou, et al. "Influence of Streambed Heterogeneity on Hyporheic Flow and Sorptive Solute Transport." Water 12, no. 6 (2020): 1547. http://dx.doi.org/10.3390/w12061547.

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The subsurface region where river water and groundwater actively mix (the hyporheic zone) plays an important role in conservative and reactive solute transport along rivers. Deposits of high-conductivity (K) sediments along rivers can strongly control hyporheic processes by channeling flow along preferential flow paths wherever they intersect the channel boundary. Our goal is to understand how sediment heterogeneity influences conservative and sorptive solute transport within hyporheic zones containing high- and low-K sediment facies types. The sedimentary architecture of high-K facies is mode

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da Motta, Lucas Marchi, Elírio Ernestino Toldo, Luiz Emílio de Sá, Brito de Almeida, and José Carlos Nunes. "Sandy sediment budget of the midcoast of Rio Grande do Sul, Brazil." Journal of Marine Research 73, no. 3 (2015): 49–69. http://dx.doi.org/10.1357/002224015815848839.

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Calculation of the coastal sediment budget involves estimation of the timing and intensity of processes of erosion, transport, and deposition, as well as an understanding of local and regional sediment dynamics. The modern sedimentary deposits present in the coastal zone constitute the physical basis of coastal ecosystems. Knowledge of the dynamics of these sediments from the source to sink area, through regional sediment management, is critical to understanding the long-term stability of the coastal zone and the fate of these important natural resources. In this article, the littoral cell con

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Murali, Madhu K., Matthew R. Hipsey, Anas Ghadouani, and Zhiguo Yuan. "SewerSedFoam: A Model for Free Surface Flow, Sediment Transport, and Deposited Bed Morphology in Sewers." Water 12, no. 1 (2020): 270. http://dx.doi.org/10.3390/w12010270.

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This paper aims to bridge the gap in the detailed modelling of flow and sediment process interactions in sewers through the development of a computational fluid dynamics (CFD) model. It draws on previous models developed for surface water sediment transport in the OpenFOAM CFD framework and builds on them to improve their suitability for sewer sediment processes. Three distinct sediment processes, suspended sediment transport, bedload transport, and deposited bed morphology, are incorporated into a free surface flow solver, interFoam. This sewer sediment model, called SewerSedFoam, models the

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Dhont, Blaise, Christophe Ancey, and Patricio Bohorquez. "Bar dynamics and sediment transport pulses in gravel-bed channels." E3S Web of Conferences 40 (2018): 05047. http://dx.doi.org/10.1051/e3sconf/20184005047.

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Mountain rivers exhibit sediment transport rate fluctuations that often cover more than two orders of magnitude. Bedform migration is often cited as the key process that causes giant fluctuations in the sediment transport rate. To quantify the effect of bedform migration on transport rate, we ran laboratory experiments in a 19-m long 60-cm wide flume with well-sorted gravel bed. At the flume inlet, the water discharge and the particle flux were kept constant. Experiments were conducted over long times (typically > 500 h). Sediment transport rate was monitored at the flume outlet using accel

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Peixoto, Rodrigo de Almeida Oliveira, Carlos Eugenio Pereira, Marcio Ricardo Salla, and José Eduardo Alamy Filho. "Study of sediment transport in the Jordão River, located in the mesoregion of the Triângulo Mineiro-MG." Acta Scientiarum. Technology 43 (February 26, 2021): e51714. http://dx.doi.org/10.4025/actascitechnol.v43i1.51714.

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Hydrosedimentological studies are fundamental for the adequate management of water resources. The Jordão River, the research study area, has the potential to generate electricity to serve a region of the TriânguloMineiro and Alto Paranaíba. In this sense, the understanding of sediment transport resources is important, since it represents a fundamental contribution for ensuring adequate management of water resources in the region. This research study has the general objective of examining sediment transport in the Jordão River, with the aim of obtaining a preliminary understanding into the dyna

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Liu, Ke, Qin Chen, and Kelin Hu. "THE IMPACT OF BARRIER ISLAND DEGRADATION ON HURRICANE-INDUCED SEDIMENT TRANSPORT." Coastal Engineering Proceedings, no. 36 (December 30, 2018): 49. http://dx.doi.org/10.9753/icce.v36.papers.49.

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Hurricanes are recognized as a strong forcing in changing coastal morphology by redistributing sediments. Barrier islands protect estuaries from storm surge and severe waves and confine water and sediment discharge into estuaries during a hurricane event. In this study, we developed a three-dimensional, fully coupled storm surge, waves, and sediment transport model. The impacts of barrier islands degradation on hurricane hydrodynamics and sediment dynamics were evaluated by comparing a hypothetical model configuration for four major barrier islands in Terrebonne Bay and Barataria Bay against a

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Koschorreck, Matthias, Klaus Holger Knorr, and Lelaina Teichert. "Temporal patterns and drivers of CO₂ emission from dry sediments in a groyne field of a large river." Biogeosciences 19, no. 22 (2022): 5221–36. http://dx.doi.org/10.5194/bg-19-5221-2022.

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Abstract. River sediments falling dry at low water levels are sources of CO2 to the atmosphere. While the general relevance of CO2 emissions from dry sediments has been acknowledged and some regulatory mechanisms have been identified, knowledge on mechanisms and temporal dynamics is still sparse. Using a combination of high-frequency measurements and two field campaigns we thus aimed to identify processes responsible for CO2 emissions and to assess temporal dynamics of CO2 emissions from dry sediments at a large German river. CO2 emissions were largely driven by microbial respiration in the se

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Tas, Silke A. J., Dirk S. van Maren, and Ad J. H. M. Reniers. "Observations of Cross-Shore Chenier Dynamics in Demak, Indonesia." Journal of Marine Science and Engineering 8, no. 12 (2020): 972. http://dx.doi.org/10.3390/jmse8120972.

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Cheniers are important for stabilising mud-dominated coastlines. A chenier is a body of wave-reworked, coarse-grained sediment consisting of sand and shells overlying a muddy substrate. In this paper we present and analyse a week of field observations of the dynamics of a single chenier along the coast of Demak, Indonesia. Despite relatively calm hydrodynamics during the one-week observational period, the chenier migrated surprisingly fast in the landward direction. The role of the tide and waves on the cross-shore chenier dynamics is explored using velocity moments as a proxy for the sediment

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Delaney, Ian, Leif Anderson, and Frédéric Herman. "Modeling the spatially distributed nature of subglacial sediment transport and erosion." Earth Surface Dynamics 11, no. 4 (2023): 663–80. http://dx.doi.org/10.5194/esurf-11-663-2023.

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Abstract. Glaciers expel sediment as they melt, in addition to ice and water. As a result, changing glacier dynamics and melt produce changes to glacier erosion and sediment discharge, which can impact the landscape surrounding retreating glaciers, as well as communities and ecosystems downstream. Currently, numerical models that transport subglacial sediment on sub-hourly to decadal scales are one-dimensional, usually along a glacier's flow line. Such models have proven useful in describing the formation of glacial landforms, the impact of sediment transport on glacier dynamics, and the inter

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Alihosseini, Maryam, Sveinung Sægrov, and Paul Uwe Thamsen. "CFD-DEM modelling of sediment transport in sewer systems under steady and unsteady flow conditions." Water Science and Technology 80, no. 11 (2019): 2141–47. http://dx.doi.org/10.2166/wst.2020.030.

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Abstract Numerical and experimental investigations were undertaken to study sediment transport under steady flow conditions and under flush waves in sewer pipes. Experiments were carried out with sand and gravel of different size distributions under smooth and rough bed conditions. Moreover, different hydraulic boundary conditions were investigated for flush waves. The numerical part of this study was carried out in the computational fluid dynamics (CFD) software ANSYS Fluent, which is two-way coupled to the Discrete Element Method (DEM) software EDEM. The main focus of this study is to determ

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Lin, Yitong, Dezheng Liu, Mingen Liang, et al. "Characteristics and Mechanisms of Spring Tidal Mixing and Sediment Transport in a Microtidal Funnel-Shaped Estuary." Journal of Marine Science and Engineering 12, no. 8 (2024): 1420. http://dx.doi.org/10.3390/jmse12081420.

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Information about estuarine mixing and its control of sediment transport is crucial to elucidating the dynamics and evolution of estuaries. Here, the microtidal and funnel-shaped Zhenhai Estuary, located in the southwestern Pearl River Delta of China, is used to investigate the characteristics and mechanisms of water mixing and sediment transport based on observations from three spring tides. The results reveal that the studied estuary remains well mixed during spring tides from 2013–2022 despite its microtidal regime. Tidal stirring, which is enhanced by tidal energy convergence and benefits

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