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Journal articles on the topic 'Sediment transport direction'

Author: Grafiati

Published: 8 June 2024

Last updated: 31 July 2025

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1

Abrantes, João R. C. B., Nuno E. Simões, João L. M. P. de Lima, and Abelardo A. A. Montenegro. "Two-dimensional (2D) numerical modelling of rainfall induced overland flow, infiltration and soil erosion: comparison with laboratory rainfall-runoff simulations on a two-directional slope soil flume." Journal of Hydrology and Hydromechanics 69, no. 2 (2021): 140–50. http://dx.doi.org/10.2478/johh-2021-0003.

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Abstract This paper presents a two-dimensional (2D) numerical model of soil erosion and sediment transport resulting from rainfall induced overland flow. It is a spatial and temporal dynamic model combining physical and empirical laws and comprises: i) An overland flow module that solves the two-dimensional unsteady water flow equations on an infiltrating surface; ii) A soil infiltration module that uses a combined Horton-SCS scheme; and iii) A soil erosion and sediment transport module that solves the two-dimensional sediment transport equation, distinguishing between rill erosion, interrill

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Narayana, A. C., and K. Pandarinath. "Sediment Transport Direction Derived from Grain-Size Statistics on the Continental Shelf Off Mangalore, West Coast of India." Journal Geological Society of India 38, no. 3 (1991): 293–98. http://dx.doi.org/10.17491/jgsi/1991/380306.

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Abstract Grain-size statistics are employed in sediment transport studies. The alongshore transport of sediment in shallow regions (30-50m depth) and deeper regions (&gt;l50m depth) is in north and south directions, whereas in the depth range of 50-75m, the sediment transport direction is towards the south. The onshore-offshore sediment transport study reveals that the sediment transport direction is towards onshore where fluvial influence is absent and the direction is towards both onshore and offshore where the fluvial influence is prevalent. The studies further reveal the different ener

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Al-Salem, K., and A. Al-Rashed. "Modeling of Sediment Transport Using Wave Height action in Fialaka Marina." IOP Conference Series: Earth and Environmental Science 958, no. 1 (2021): 012023. http://dx.doi.org/10.1088/1755-1315/958/1/012023.

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Abstract Failaka Island is the second-largest and one of the most important islands of Kuwait from the point of view of tourism located in the north Arabian Gulf. It has a marina constructed in 1979 and managed by the Ministry of Communication (MOC) and a tourism enterprise, and is widely used for its ferry landing facility. The coastal waters around Failaka are turbid and current velocities tend to be as high as ~0.5 m/s during spring tide. The marina basin, with axial plan view dimensions of about 285 m by 260 m experiences shoaling of naturally flocculated fine (cohesive) sediment and coars

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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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Cheng, Wufeng, Shenliang Chen, Jun Zhu, Xiaojing Zhong, Jin Hu, and Junli Guo. "Identification of the Sediment Movement Mechanism via Grain Size and Shape: A Case Study of a Beach in Eastern Hainan Island in South China." Water 15, no. 20 (2023): 3637. http://dx.doi.org/10.3390/w15203637.

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This paper used dynamic image analysis (DIA) to analyze the grain size and shape data of beach surface sediments in Bao’ding Bay, eastern Hainan Island, China, and explored the effects of sediment transport modes and beach morphology on the grain size–shape trend curves. This paper adopted a method of combining grain size cumulative frequency curves and grain size–shape trend curves to identify three sediment transport modes: suspension, saltation, and traction, and analyzed the characteristics of the grain size–shape trend curves under different beach morphologies (reflective, intermediate, a

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ABO ZED, ABO BAKER I. "Effects of waves and currents on the siltation problem of Damietta harbour, Nile Delta coast, Egypt." Mediterranean Marine Science 8, no. 2 (2007): 33. http://dx.doi.org/10.12681/mms.152.

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This study evaluates the effect of prevailing dynamic factors on the sedimentation process in Damietta Harbour along the Nile delta coast of Egypt. The monitoring program spanned the period between 1978 and 1999 and included measurements of waves, currents and bathymetric profiles. The evaluation was based on determination of erosion and accretion rates, current regime, sediment transport, wave characteristics and wave refraction. Results revealed that the predominant wave direction from N-NW sector (86 %) throughout the year is responsible for generation of a longshore eastward current. Less

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Riaz, Muhammad Zain Bin, Umair Iqbal, Huda Zain, et al. "Influence of Vertical Force on Shields’ Curve and Its Extension in Rapidly Varied Flow." Water 16, no. 20 (2024): 2960. http://dx.doi.org/10.3390/w16202960.

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Sediment transport is a geophysical phenomenon characterized by the displacement of sediment particles in both the horizontal and vertical directions due to various forces. Most of the sediment transport equations currently used include only parameters related to the horizontal direction. This study measured both instantaneous longitudinal and vertical parameters, i.e., velocities and forces, and found that the magnitude and direction of the vertical force play an important role in sediment incipient motion. An innovative experimental system was developed to investigate the effect of vertical

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8

Shen, Jian, Dianci Chi, and Bingrou Xi. "Sediment distributions and transport patterns in the Pearl River Estuary and its adjacent coastal ocean." Advances in Engineering Technology Research 8, no. 1 (2023): 398. http://dx.doi.org/10.56028/aetr.8.1.398.2023.

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Coastal sediment is important for the development of river deltas and for carrying both nutrients and pollutants into estuaries and coasts. Totally 265 surficial sediments collected from the Pearl River Estuary and its adjacent coastal ocean were analyzed by using Gao-Collins method to study the sediment transport path and deposition center. The Pearl River Estuary was an area of sandy mud sediment and showed some muddy patches. There were 5 distinguishable sediment convergence centers, which represent 3 types of sediment transport patterns and hydrodynamic environments. The net sediment trans

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9

Adel, Mnaf, and Ali N. Hilo. "The Effects of submerged vanes inclination angle on sediment transport into sub-channel." Wasit Journal of Engineering Sciences 11, no. 1 (2023): 105–15. http://dx.doi.org/10.31185/ejuow.vol11.iss1.414.

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The sub-channels that branch from the larger rivers may be manmade or natural. From the major channels, these sub-channels transfer sediments and water. The deposition of sediments at the entrance, sub-channel is a significant research challenge because it threatens the sub-facilities channel's and reduces the sub-carrying channel's capacity. Therefore, submerged vanes were used to reduce the amount of sediment entering the sub-channel. The goal of the vanes is to reduce the amount of sediment entering the sub-channel, hence redistributing sediment at the sub-entry channel's . They are vertica

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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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Wang, Hongbing, Yuxi Wu, Xiaoming Wan, Lu Xia, and Si Wang. "Grain Size Characteristics of Surface Sediments and Their Migration Trends in the Nearshore Waters of East Guangdong." Sustainability 15, no. 14 (2023): 11069. http://dx.doi.org/10.3390/su151411069.

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By collecting surface sediment samples from 158 stations in the near-shore waters of eastern Guangdong, grain size analysis and grain size parameter calculations were performed to explore the characteristics and migration trends of surface sediments in the area. The analysis of the grain size results showed that the surface sediments in the nearshore waters of east Guangdong could be classified into nine sediment types, mainly including seven types of gravel sand ((g)S), gravel muddy sand ((g)mS), gravelly mud ((g)M), sand (S), silty sand (zS), sandy silt (sZ) and silt (Z). The relative percen

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Walstra, Dirk-Jan, J. De Vroeg, J. Van Thiel de Vries, et al. "A COMPREHENSIVE SEDIMENT BUDGET FOR THE MISSISSIPPI BARRIER ISLANDS." Coastal Engineering Proceedings 1, no. 33 (2012): 81. http://dx.doi.org/10.9753/icce.v33.sediment.81.

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In order to conceive any realistic plan for post-Katrina island restoration, it is necessary to understand the physical processes that move sand along the littoral drift zone off the coast of Mississippi. This littoral zone influences the character of the Mississippi barrier islands as they exist in an ever changing cycle. To help in this understanding, a sediment transport model was conducted to establish a current sediment budget for the islands. This study evaluated the existing regional sediment transport magnitudes and directions for the Mississippi and Alabama barrier islands fronting Mi

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Budiman, Farid, Mochammad Meddy Danial, Jasisca Meirany, Arfena Deah Lestari, and Vivi Bachtiar. "STUDY OF WAVE DOMINANT DIRECTIONS ON SEDIMENT TRANSPORT IN THE ESTUARY OF KAPUAS RIVER, PONTIANAK, WEST KALIMANTAN." Jurnal Teknik Sipil 23, no. 1 (2023): 112. http://dx.doi.org/10.26418/jtst.v23i1.57917.

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The Kapuas River is a very important water transportation route in West Kalimantan, crossing 5 districts and 1 city. The problem that occurs in the shipping lane on the Kapuas River is the accumulation of severe sediment at the mouth of the estuary. This becomes an obstacle for ships with large loads to sail, for this reason, this research was carried out. The purpose of this study was to determine the dominant direction of waves and sediment transport. This study was calculated using the CERC (Coastal Engineering Research Centre) method and using secondary data. It was found that the dominant

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14

Zhong, Shuai, Jianjun Qu, Zhizhong Zhao, and Penghua Qiu. "The Characteristics of the Aeolian Environment in the Coastal Sandy Land of Boao Jade Belt Beach, Hainan Island." Atmosphere 16, no. 7 (2025): 845. https://doi.org/10.3390/atmos16070845.

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Boao Jade Beach, on the east coast of Hainan Island, is a typical sandy beach and is one of the areas where typhoons frequently land in Hainan. This study examined wind speed, wind direction, and sediment transport data obtained from field meteorological stations and omnidirectional sand accumulation instruments from 2020 to 2024 to study the coastal aeolian environment and sediment transport distribution characteristics in the region. The findings provide a theoretical basis for comprehensive analyses of the evolution of coastal aeolian landforms and the evaluation and control of coastal aeol

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15

Anokhin, V. M., O. M. Vinogradova, I. M. Pyatov, and D. S. Dudakova. "Longshore Sediment Transport in Lake Ladoga Based on Analyses of the Heavy Mineral Fraction of Sand in Coastal Sediments." Известия Русского географического общества 155, no. 3-4 (2023): 3–16. http://dx.doi.org/10.31857/s0869607123030023.

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Abstract—In order to identify the directions of transport of coastal sediments of Lake Ladoga, heavy mineral fraction was extracted from sand samples collected on all types of its shores. The mineral composition, size and roundness of particles − features characterising the degree of reworking of coastal sediments − were assessed under a microscopic analysis. We identified 4 clusters with similar degrees of reworking of the source material, which, based on the results of the factor analysis, were ranked by relative transport distance from insignificant to very significant. The maximum number o

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16

Rachman, Cyril, and Yuyun Qomariyah. "INVESTIGATING THE LITTORAL TRANSPORT OF SEDIMENT ALONG THE NASESE COASTLINE, SUVA, FIJI ISLANDS." Coastal Engineering Proceedings, no. 36v (December 28, 2020): 48. http://dx.doi.org/10.9753/icce.v36v.sediment.48.

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The research investigated the current Nasese Coastline area from the impact of Littoral transport, a term used for the transport of non-cohesive sediments, i.e. mainly sand, along the foreshore and the shoreface of Nasese due to the action of the breaking waves and the longshore current. The littoral transport is also called the longshore transport or the littoral drift. The theoretical concept coastal sediment properties can be used to evaluate properties of sediment on site to avoid serve impacts towards the Suva Port in the future. The method used was on-site measurement by surveying to gen

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17

Karditsa, A., and S. E. Poulos. "The application of grain size trend analysis in the fine grained seabed sediment of Alexandroupolis Gulf." Bulletin of the Geological Society of Greece 47, no. 1 (2016): 157. http://dx.doi.org/10.12681/bgsg.10917.

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Grain size trend analysis is a method that determines sediment transport direction, based on the relationship of grain size parameters (mean size, sorting, skewness). The application of the method in the seabed sediments of Alexandroupolis Gulf showed that there are three different sub areas of distinctive sediment movement of bottom sediments (water depths <40 m):(i) the eastern part, which is mainly influenced by the Evros river water/sediment influxes; (ii) the central part that is primarily controlled by the wave activity; and, (iii) the western part that is mainly influenced by the win

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18

Synková, Jana. "Possibility of utilization of direction construction in river revitalization." Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis 57, no. 5 (2009): 279–84. http://dx.doi.org/10.11118/actaun200957050279.

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Directing and concentrating structures are used mainly on water coursers with unstable channel and major sediment transport or in areas with major bank erosion. The main purpose of these structures is to redirect water flow from the stressed and very often eroded bank to the centre of the channel or other parts of the channel, where the water flow may be used e.g. for dispersion of unsuitable deposit before its eventual stabilization by natural succession.Another important goal is to achieve a desired change of the stream channel by using the transporting power of the water flow and targeted d

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Lai, Yong, and Kuowei Wu. "A Three-Dimensional Flow and Sediment Transport Model for Free-Surface Open Channel Flows on Unstructured Flexible Meshes." Fluids 4, no. 1 (2019): 18. http://dx.doi.org/10.3390/fluids4010018.

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Three-dimensional (3D) hydrostatic-pressure-assumption numerical models are widely used for environmental flows with free surfaces and phase interfaces. In this study, a new flow and sediment transport model is developed, aiming to be general and more flexible than existing models. A general set of governing equations are used for the flow and suspended sediment transport, an improved solution algorithm is proposed, and a new mesh type is developed based on the unstructured polygonal mesh in the horizontal plane and a terrain-following sigma mesh in the vertical direction. The new flow model i

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20

Yue, Zheng Wen, Rui Qiang Zhang, and Tian Ming Gao. "Research of Sand Drift Potential and Wind Conditions in Xilamuren Grassland." Advanced Materials Research 955-959 (June 2014): 3499–504. http://dx.doi.org/10.4028/www.scientific.net/amr.955-959.3499.

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Using the wind data in Xilamuren desert grassland by wind erosion monitoring system to record the years of 2011-2013 as the research foundations, through the statistics of wind and sand transport potential research, from aspect of the characteristics of blown sand environment Xilamuren desert grassland which can be shown the research area are mainly affected by the westerly, Northwest westerly wind or northwest wind three group interaction. The study area of annual sediment potential had mainly effected by westerly and Northwest westerly wind direction ,with wind direction variability index in

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Fernandes, Elisa, Pablo da Silva, Glauber Gonçalves, and Osmar Möller. "Dispersion Plumes in Open Ocean Disposal Sites of Dredged Sediment." Water 13, no. 6 (2021): 808. http://dx.doi.org/10.3390/w13060808.

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Management of estuarine systems under anthropogenic pressures related to port settlement and development requires thorough understanding about the long-term sediment dynamics in the area. In an era of growing shipping traffic and of ever larger ships; millions of tons of bottom sediments are dredged annually all over the world and the major question concerning dredging operations is not whether they should be done, because it is obvious that they are extremely important and necessary, but where the dredged sediments can be disposed of with the least possible ecological impact. The present stud

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Alley, Richard B., Daniel E. Lawson, Edward B. Evenson, and Grahame J. Larson. "Sediment, glaciohydraulic supercooling, and fast glacier flow." Annals of Glaciology 36 (2003): 135–41. http://dx.doi.org/10.3189/172756403781816121.

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AbstractGlaciers often advance over proglacial sediments, which then may enhance basal motion. For glaciers with abundant meltwater, thermodynamic considerations indicate that the sediment–ice contact in the direction of ice flow tends toward an angle opposed to and somewhat steeper than the surface slope (by slightly more than 50%). A simple model based on this hypothesis yields the extent of over-ridden sediments as a function of sediment thickness and strength, a result that may be useful in guiding additional fieldwork for hypothesis testing. Sediment-floored as well as rock-floored overde

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Cerkowniak, Grzegorz R., and Marek Kowalewski. "Transport of Fine Sediments in MarineWaterbodies Near River Mouths: Preliminary Results." Archives of Hydro-Engineering and Environmental Mechanics 65, no. 4 (2018): 255–75. http://dx.doi.org/10.1515/heem-2018-0016.

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AbstractTransport of fine sediments depends mainly on the efficiency of flocculation. Flocculation, understood as the result of simultaneous processes of aggregation of particles and floc break-up, is a common phenomenon in marine environments. It is typical of fine sediments. This study presents a mathematical model of fine sediment transport. A model of flocculation is an important part of this model. Its main assumption is that flocculation is governed by turbulence. The model was qualitatively tested in a simplified theoretical waterbody. Such factors as the wind direction, wind speed, riv

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Zhang, Cun Yong. "Suspended Sediment Transport in Lianyungang Nearshore Area." Applied Mechanics and Materials 170-173 (May 2012): 2204–8. http://dx.doi.org/10.4028/www.scientific.net/amm.170-173.2204.

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Hydrological observations at 13-19 stations were conducted synchronically in Lianyungang nearshore area during the spring and half tide in winter and summer respectively. Data of suspended sediment concentrations (SSC), currents and water levels at observation stations were used to study the suspended sediment transport by the method of mechanism decomposition. The advection transport plays an important role during the whole observations, with the direction generally same to the flood current. The tidal pumping transport plays a significant role in the nearshore area, which is the main factor

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Guerrero, Rocío, Juan L. Valenzuela, Alejandro I. Monterroso, and Carlos Asensio. "Impact of Wind Direction on Erodibility of a Hortic Anthrosol in Southeastern Spain." Agriculture 11, no. 7 (2021): 589. http://dx.doi.org/10.3390/agriculture11070589.

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We tested an efficient, easily and economically manufactured wind-transported particle collector of our own design, called a multidirectional trap (MDt), on fine-tilled Anthrosols. Results from the logs of nine vaned masts, each with four MDt collectors at different heights, showed a clear predominance of northeast and south winds. After analyzing sediment transport rates and their balance, we found that sediments from the south were being deposited rather than lost. A large amount of phyllosilicates, which are highly adhesive sediments, and therefore, increase aggregation, decreasing erodibil

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Pourteimouri, Paran, Geert Campmans, Kathelijne Wijnberg, and Suzanne Hulscher. "BEACH BUILDINGS ON POLES AND THEIR IMPLICATIONS FOR DUNEWARD SEDIMENT TRANSPORT: A NUMERICAL STUDY." Coastal Engineering Proceedings, no. 37 (September 1, 2023): 23. http://dx.doi.org/10.9753/icce.v37.sediment.23.

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Sandy beaches are attractive worldwide. An increasing number of beach users induces a higher demand for buildings at the beach-dune interface. These buildings alter the local flow speed and direction which, in turn, changes the aeolian sand transport around buildings, and the sediment supply to the dunes. This study aims to understand how and to what extent beach buildings on poles affect duneward sediment transport.

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Mir-Gual, Miquel, Guillem X. Pons, and Irene Delgado-Fernández. "Field-Measurement of Surface Wind and Sediment Transport Patterns in a Coastal Dune Environment, Case Study of Cala Tirant (Menorca, Spain)." Journal of Marine Science and Engineering 11, no. 12 (2023): 2361. http://dx.doi.org/10.3390/jmse11122361.

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Blowouts are integral features of coastal dune fields. Their presence enhances both geomorphological and ecological diversity and enables the movement of sand by wind. Their role as a ‘transport corridor’ may be, however, considered negative from a coastal management perspective in heavily touristic areas, where the existence of blowouts close to the foredune can enhance the loss of sediment from the beach. This paper investigated the relationship between airflow dynamics and patterns of sediment transport from the beach to established dunes through a trough blowout located on the foredune. Se

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Zanke, Ulrich, Aron Roland, and Andreas Wurpts. "The Reason for the Rise in Critical Shear Stress on Sloping Beds." Water 15, no. 16 (2023): 2976. http://dx.doi.org/10.3390/w15162976.

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In sediment mechanics, the conditions for the onset of sediment movement are of particular importance. However, despite decades of research, questions remain unanswered. Thus, physical logic suggests that sediments move more easily on beds inclined in the direction of flow than on horizontal beds and that transport rates are correspondingly increased. However, numerous studies have shown that sediments require increased rather than decreased shear stress to move on sloping beds and that transport rates are lower instead of increased. Since an early publication on this issue by Ashida and Michi

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Tribhaskoro, Whisnu, Sugeng Widada, and Warsito Atmodjo. "Sedimentasi di Sekitar Bangunan Groin di Pantai Komodo Kota Tegal." Indonesian Journal of Oceanography 4, no. 3 (2022): 01–12. http://dx.doi.org/10.14710/ijoce.v4i3.13261.

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Bangunan pelindung pantai berupa groin yang terdapat pada Pantai Komodo yaitu memiliki fungsi sebagai penahan aktivitas transport sedimen yang terjadi pada sepanjang pantai sehingga dapat meminimalisir terjadinya abrasi yang telah terjadi. Tujuan dari penelitian ini adalah menghitung dan menganalisis pengaruh gelombang laut terhadap angkutan sedimen serta mengidentifikasi besaran laju sedimentasi yang disebabkan olah gelombang laut yang disebabkan oleh angin di Pantai Komodo Kota Tegal. Data utama yang digunakan yaitu data laju sedimentasi yang diambil menggunakan sedimen trap dan data gelomba

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Ostrowski, Rafał. "Influence of Wave Shape on Sediment Transport in Coastal Regions." Archives of Hydro-Engineering and Environmental Mechanics 65, no. 2 (2018): 73–90. http://dx.doi.org/10.1515/heem-2018-0006.

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AbstractThe paper deals with the influence of the wave shape, represented by water surface elevations and wave-induced nearbed velocities, on sediment transport under joint wave-current impact. The focus is on the theoretical description of vertically asymmetric wave motion and the effects of wave asymmetry on net sediment transport rates during interaction of coastal steady currents, namely wave-driven currents, with wave-induced unsteady free stream velocities. The cross-shore sediment transport is shown to depend on wave asymmetry not only quantitatively (in terms of rate), but also qualita

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Nielsen, Peter. "TOWARDS MODELLING COASTAL SEDIMENT TRANSPORT." Coastal Engineering Proceedings 1, no. 21 (1988): 144. http://dx.doi.org/10.9753/icce.v21.144.

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Sediment transport data from the field and laboratory tests are used to gain insight into two fundamental questions. Firstly: What is the relative importance of coexisting waves and currents for the resulting sediment transport? Secondly: Is the influence of grain size as strong as traditional models predict, or is it as weak as the empirical CERC-formula indicates? Wave tank data reveal that the oscillatory velocity will in most cases determine the direction as well as the magnitude of the shore normal sediment transport, and wave flume data on shore normal transport as well as field data on

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Liu, Haoran, Kehui Xu, Yanda Ou, Robert Bales, Zhengchen Zang, and Z. George Xue. "Sediment Transport near Ship Shoal for Coastal Restoration in the Louisiana Shelf: A Model Estimate of the Year 2017–2018." Water 12, no. 8 (2020): 2212. http://dx.doi.org/10.3390/w12082212.

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Ship Shoal has been a high-priority target sand resource for dredging activities to restore the eroding barrier islands in LA, USA. The Caminada and Raccoon Island pits were dredged on and near Ship Shoal, which resulted in a mixed texture environment with the redistribution of cohesive mud and noncohesive sand. However, there is very limited knowledge about the source and transport process of suspended muddy sediments near Ship Shoal. The objective of this study is to apply the Regional Ocean Modeling System (ROMS) model to quantify the sediment sources and relative contribution of fluvial se

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Kleinhans, M. G., A. W. E. Wilbers, and W. B. M. ten Brinke. "Opposite hysteresis of sand and gravel transport upstream and downstream of a bifurcation during a flood in the River Rhine, the Netherlands." Netherlands Journal of Geosciences 86, no. 3 (2007): 273–85. http://dx.doi.org/10.1017/s0016774600077854.

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AbstractAt river bifurcations water and sediment is divided among the downstream branches. Prediction of the sediment transport rate and division thereof at bifurcations is of utmost importance for understanding the evolution of the bifurcates for short-term management purposes and for long-term fluvial plain development. However, measured sediment transports in rivers rarely show a uniquely determined relation with hydrodynamic parameters. Commonly a hysteresis is observed of transport rate as a function of discharge or shear stress which cannot be explained with the standard sediment transpo

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A, Rabiu, and Maigari A S. "Flow velocity and implication on particle size of bottom sediment in the commodore channel lagos, southwestern nigeria." Global Journal of Pure and Applied Sciences 29, no. 1 (2023): 19–27. http://dx.doi.org/10.4314/gjpas.v29i1.3.

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Flow velocity generally influences the erosion, transport and deposition of sediments. Flow velocity and in relation to particle size distribution in the Commodore channel was investigated with the Acoustic doppler current profiler (ADCP), echosounder and veen van grab. Those equipment were deployed through a low draft survey boat to acquire acoustic and sediment data covering the study area. The ADCP measured the current velocity along fourteen established transect lines while twenty surface sediments samples were collected along the banks and center of the channel respectively. Sediment samp

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Jarocki, Walenty. "WAVE EFFECT ON THE COAST FORMATION AND EROSION." Coastal Engineering Proceedings 1, no. 7 (2011): 12. http://dx.doi.org/10.9753/icce.v7.12.

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Various authors explain differently the mechanism of action of waves on the_ sediment movement. Some authors consider that the waves are raising the soil fractions from the bottom and water currents transfer them along the seaboard. The other authors suppose that each wave shears some soil in the bottom in littoral zone of the waves and wind is oblique to the shoreline. Beach currents catch and transport the sediment particles along the seaboard. These authors suppose when the wind is in the direction of seaboard /from sea/ then the bottom currents move in the opposite direction. These current

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Ondara, Koko, and Semeidi Husrin. "CHARACTERISTICS OF BREAKING WAVES AND ANALYSIS OF SEDIMENT TRANSPORT IN TELUK KENDARI." Jurnal Ilmu dan Teknologi Kelautan Tropis 9, no. 2 (2018): 585–96. http://dx.doi.org/10.29244/jitkt.v9i2.19293.

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One of the problems that often occured in the bay area is a sedimentation process that occurred continuously, causing silting. The movement of sediment material in the process of sedimentation is influenced by the movement of the water flow like the tides, winds, currents and waves. The aim of this study was to determine the characteristics of the hydrodynamic conditions, particularly the distribution pattern and the capacity of the sediments in the Kendari Bay with oceanographic modeling approach. Bathymetry data measured at the site of the research conducted in August 2015. The analysis of d

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Oh, Jung-Eun, Yeon S. Chang, Weon Mu Jeong, Ki Hyun Kim, and Kyong Ho Ryu. "Estimation of Longshore Sediment Transport Using Video Monitoring Shoreline Data." Journal of Marine Science and Engineering 8, no. 8 (2020): 572. http://dx.doi.org/10.3390/jmse8080572.

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Video monitoring systems (VMS) have been used for beach status observation but are not effective for examining detailed beach processes as they only measure changes to the shoreline and backshore. Here, we extracted longshore sediment transport (LST) from VMS in order to investigate long- and short-term littoral processes on a pocket beach. LST estimated by applying one-line theory, wave power, and the oblique angle of incident waves were used to understand shoreline changes caused by severe winter storms. The estimated LST showed good agreement with the shoreline changes because the sediments

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Zorndt, Anna Christina, Andreas Wurpts, Torsten Schlurmann, Nino Ohle, and Thomas Strotmann. "DUNE MIGRATION AND SAND TRANSPORT RATES IN TIDAL ESTUARIES: THE EXAMPLE OF THE RIVER ELBE." Coastal Engineering Proceedings 1, no. 32 (2011): 38. http://dx.doi.org/10.9753/icce.v32.sediment.38.

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Large parts of the tidal estuary of river Elbe (Germany) are characterized by regular patterns of sand dunes. They are presumed to evolve due to complex sand transport mechanisms and show multi-faceted migration patterns. Direction and magnitude of their migration are influenced by hydrodynamic boundary conditions such as river runoff and tides. Dune Migration can lead to residual sand transport rates, depending on its direction and magnitude and the dune’s characteristics. The understanding of dune migration patterns and associated sand transport is the basis of an effective sediment manageme

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Wei, Hong, Wen Dai, Bo Wang, et al. "An Improved Flow Direction Algorithm That Considers Mass Conservation for Sediment Transport Simulations." Water 15, no. 23 (2023): 4111. http://dx.doi.org/10.3390/w15234111.

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The sediment transport process in watersheds is an important research component of geomorphology and surface dynamics. Previous work has inferred the spatial distribution of the sediment transport rate (STR) by the flow direction algorithm and measured topographic variation; however, the simple application of the flow direction algorithm contributes to mass non-conservation during a simulation. This study designs an improved flow direction algorithm for a sediment transport process simulation by judging the mass conservation situation in the simulation process. The specific implementation is t

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Zhao, Geer, Rui Zhu, Zhenyu Si, and Mengmeng Liu. "The Association Between Sand Body Distribution and Fault of Zhuhai Formation on the North Slope of Baiyun Sag, Pearl River Mouth Basin, China." Applied Sciences 15, no. 1 (2025): 412. https://doi.org/10.3390/app15010412.

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This paper is predominantly intended to explore the distribution rule of the sand body of the Zhuhai Formation on the north slope of the Baiyun Sag. The Zhuhai Formation was deposited during a rifting phase. Influenced by tectonic movements, the investigated area developed a set of contemporaneous normal faults extending in the near W-E direction. The formation of faults alters the palaeomorphology, exerting a certain influence on the distribution of sedimentary sand deposits. To clarify the correlation between faults and sand bodies will be advantageous for an even distribution of sand bodies

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Hardisty, J. "Measurement of shallow water wave direction for longshore sediment transport." Geo-Marine Letters 8, no. 1 (1988): 35–39. http://dx.doi.org/10.1007/bf02238004.

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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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BITTENCOURT, ABÍLIO C. S. P., LOUIS MARTIN, JOSÉ M. L. DOMINGUEZ, IRACEMA R. SILVA, and DAIANA L. SOUSA. "A significant longshore transport divergence zone at the Northeastern Brazilian coast: implications on coastal Quaternary evolution." Anais da Academia Brasileira de Ciências 74, no. 3 (2002): 505–18. http://dx.doi.org/10.1590/s0001-37652002000300012.

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By using the mean directions of the wave-fronts approaching the Brazilian northeastern coastal stretch comprised between the localities of Real river (Sergipe State) and Galinhos (Rio Grande do Norte State) - coincident with those of the main winds occurring in the area - and their periods, we have defined a wave climate model based on the construction of refraction diagrams. The resulting model of sediment transport, as obtained by numerical modelling from the refraction diagrams, taking into consideration the angle of approach and waves heights along the 10-m isobath, was capable of reproduc

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CONLEY, DANIEL C., SILVIA FALCHETTI, IRIS P. LOHMANN, and MAURIZIO BROCCHINI. "The effects of flow stratification by non-cohesive sediment on transport in high-energy wave-driven flows." Journal of Fluid Mechanics 610 (August 8, 2008): 43–67. http://dx.doi.org/10.1017/s0022112008002565.

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The two-way effects of the time-varying suppression of turbulence by gradients in suspended sediment concentration have been investigated using a modified form of the Generalized Ocean Turbulence Model (GOTM). Field measurements of fluid velocities and sediment concentrations collected under high-energy conditions (mobility number ≈ 900) have been simulated both including and neglecting the feedback between sediment and turbulence. The results show that, when present, this feedback increases the wave-coherent component of transport relative to the mean component of transport, which can even ch

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OPREANU, Gicu. "The textural character of the littoral sediments between Sfântu Gheorghe and Gura Portiţa." Geo-Eco-Marina No 11/2005 (December 31, 2005): 91–99. https://doi.org/10.5281/zenodo.57395.

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Abstract. This paper is based on grain size analyses performed on 250 sediment samples collected with the Van Veen grab from water depths of 0 to 20 meters in the littoral area of the Black Sea situated between Sfântu Gheorghe village and Gura Portiţa. As a result of analyzing the distribution of the types of depth sediments, it has been noted that along the entire length of the area under study littoral sediments consisting of well-sorted sands with skewness levels ranging from –0.41 to 0.60 are to be found between 0 and 7 meters. At water depths between 7 and 20 meters there are

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Dionísio António, Sara, Jebbe van der Werf, Erik Horstman, et al. "Influence of Beach Slope on Morphological Changes and Sediment Transport under Irregular Waves." Journal of Marine Science and Engineering 11, no. 12 (2023): 2244. http://dx.doi.org/10.3390/jmse11122244.

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This paper presents new data from large-scale wave flume experiments. It shows the beach profile evolution and sediment transport for two different bed slopes (1:15 and 1:25), and three irregular high-energy erosive wave conditions and one low-energy accretive wave condition. The bulk cross-shore net sediment transport was investigated for the total active profile and for the surf and swash zone separately. It is shown that the steep slope is morphologically more active than the gentle slope, with faster and more pronounced morphological changes and larger sediment transport rates. For both sl

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Zhang, Xin Zhou, Xi Ping Dou, Xiao Dong Zhao, Xiang Ming Wang, and Xiang Yu Gao. "3D Numerical Simulation of Current and Sediment Transport in Estuary and Coast." Advanced Materials Research 779-780 (September 2013): 899–902. http://dx.doi.org/10.4028/www.scientific.net/amr.779-780.899.

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In estuarine and coastal area, due to the colligated function of tide, runoff, wind and wave, suspended sediment profile in main flow direction varies from the inland river. Thus, combined with massive data sets from experiments in flume and observations in field, the study on the profile of concentration of suspended sediment are carried out in the thesis. Finally, 3D numerical model of turbulent sediment is established in estuarine and coastal area to carry out a simulation research on current and sediment movement in Yangtze River estuary.

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Strypsteen, Houthuys, and Rauwoens. "Dune Volume Changes at Decadal Timescales and Its Relation with Potential Aeolian Transport." Journal of Marine Science and Engineering 7, no. 10 (2019): 357. http://dx.doi.org/10.3390/jmse7100357.

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Long-term changes in dune volume at the Belgian coast are analyzed based on measured data by airborne surveys available from 1979. For most of the 65 km long coastal stretch, dune volume increases linearly in time at a constant rate. Dune growth varies between 0–12.3 m³/m/year with an average dune growth of 6.2 m³/m/year, featuring large variations in longshore directions. Based on a wind data set from 2000–2017, it is found that potential aeolian sediment transport has its main drift from the west to southwest direction (onshore to oblique onshore). Based on a modified Bagnold model, onshore

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Brand, Evelien, Lars De Sloover, Alain De Wulf, Anne-Lise Montreuil, Sander Vos, and Margaret Chen. "Cross-Shore Suspended Sediment Transport in Relation to Topographic Changes in the Intertidal Zone of a Macro-Tidal Beach (Mariakerke, Belgium)." Journal of Marine Science and Engineering 7, no. 6 (2019): 172. http://dx.doi.org/10.3390/jmse7060172.

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Sediment transport is a key element in intertidal beach morphodynamics, but measurements of sediment transport are often unreliable. The aim of this study is to quantify and investigate cross-shore sediment transport and the resulting topographic changes for a tide-dominated, sandy beach. Two fortnight-long field experiments were carried out during which hydrodynamics and sediment dynamics were measured with optical and acoustic sensors, while the beach topography was surveyed with a permanent terrestrial laser scanner. Suspended sediment was generally well-mixed and currents were largest at a

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Ruol, Piero, Barbara Zanuttigh, Luca Martinelli, Peter Kofoed, and Peter Frigaard. "NEAR-SHORE FLOATING WAVE ENERGY CONVERTERS: APPLICATIONS FOR COASTAL PROTECTION." Coastal Engineering Proceedings 1, no. 32 (2011): 61. http://dx.doi.org/10.9753/icce.v32.structures.61.

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Aim of this note is to analyse the possible application of a Wave Energy Converter (WEC) as a combined tool to protect the coast and harvest energy. Physical model tests are used to evaluate wave transmission past a near-shore floating WEC of the wave activated body type, named DEXA. Efficiency and transmission characteristics are approximated to functions of wave height, period and obliquity. Their order of magnitude are 20% and 80%, respectively. It is imagined that an array of DEXA is deployed in front of Marina di Ravenna beach (IT), a highly touristic site of the Adriatic Coast. Based on

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