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You searched for: Subject "suspended sediment" Remove constraint Subject: "suspended sediment"
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1. Experimental study of obstacle and bed roughness effects on behavior of turbidity current

Author:
Sara Baghalian; Masoud Ghodsian
Source:
Journal of hydro-environment research 2022 v.40 pp. 77-90
ISSN:
1570-6443
Subject:
suspended sediment,   etc   ; research; roughness; sediments; turbidity;     Show all 5 Subjects
Abstract:
... Laboratory experiments were carried out to study the behavior of turbidity current under subcritical approach flow condition. In order to study the effects of solid obstacle and bed roughness on turbidity current, 24 experiments were conducted. Two trapezoidal macro-roughness elements with 0.01 m and 0.03 m height and three triangular obstacles with 0.1 m to 0.3 m height were used. The parameters ...
DOI:
10.1016/j.jher.2021.11.002

2. Metal(loid) flux change in Dongting Lake due to the operation of Three Gorges Dam, China

Author:
Wenzhong Tang; Limin Shu; Jack C. Ng; Yaohui Bai; Yu Zhao; Hui Lin; Hong Zhang
Source:
Environmental pollution 2022 v.306 pp. 119342
ISSN:
0269-7491
Subject:
suspended sediment,   etc   ; lakes; risk; sediments; toxicity;     Show all 5 Subjects
Abstract:
... A drastic decrease in the suspended sediment of Dongting Lake (DTL) has been observed due to Three Gorges Dam (TGD) impoundment operation since 2003. However, the relationship between sediment loads and metal fluxes has not been studied. This study comprehensively analyzed the content characteristics of seven metal(loid)s (As, Cd, Cr, Cu, Hg, Pb, and Zn) in the surface sediment of DTL from 2000 to ...
DOI:
10.1016/j.envpol.2022.119342

3. Damming river shapes distinct patterns and processes of planktonic bacterial and microeukaryotic communities

Author:
Lunhui Lu; Qiong Tang; Hang Li; Zhe Li
Source:
Environmental microbiology 2022 v.24 no.4 pp. 1760-1774
ISSN:
1462-2912
Subject:
suspended sediment,   etc   ; geographical distribution; plankton; rivers; Yangtze River;     Show all 5 Subjects
Abstract:
... Planktonic bacterial and microeukaryotic communities play important roles in biogeochemical cycles, but their biogeographic patterns and community assembly processes in large damming rivers still remain unclear. In this study, 16S rRNA and 18S rRNA coding genes were used for sample sequencing analysis of planktonic bacterial and microeukaryotic communities in the upper Yangtze River. The upper Yan ...
DOI:
10.1111/1462-2920.15872

4. LES two-phase modelling of suspended sediment transport using a two-way coupled Euler–Lagrange approach

Author:
Daniel Wildt; Christoph Hauer; Helmut Habersack; Michael Tritthart
Source:
Advances in water resources 2022 v.160 pp. 104095
ISSN:
0309-1708
Subject:
suspended sediment,   etc   ; equations; momentum; sediment transport; sediments; water;     Show all 6 Subjects
Abstract:
... Sediment plume development was modelled using an Euler–Lagrangian two-way coupled large eddy simulation. Momentum exchange was calculated based on interaction forces in the Maxey–Riley equation. Validation showed good agreement with experimental data from literature. For analysis of interaction between sediment and fluid 6,859 particles were released into turbulent fluid flow. In order to ensure i ...
DOI:
10.1016/j.advwatres.2021.104095

5. Assessment of the potential for quantifying multi-period suspended sediment concentration variations using satellites with different temporal resolution

Author:
Hangjie Lin; Qian Yu; Yunwei Wang; Shu Gao
Source:
Science of the total environment 2022 v.853 pp. 158463
ISSN:
0048-9697
Subject:
suspended sediment,   etc   ; Landsat; environment; geomorphology; time series analysis; China;     Show all 6 Subjects
Abstract:
... Suspended sediment concentration (SSC) is a crucial indicator for coastal health and geomorphological evolution, featured by complex periodic processes on multiple timescales in response to different cyclic forcing factors. Although remote sensing has functioned as an important means for SSC estimation with sufficient spatio-temporal coverage, the low effective sampling rates and resulting unevenl ...
DOI:
10.1016/j.scitotenv.2022.158463

6. Generalized non-equilibrium suspended sediment transport model with hindered settling effect for open channel flows

Author:
Sourav Hossain; Gaurav Singh; Anirban Dhar; Koeli Ghoshal
Source:
Journal of hydrology 2022 v.612 pp. 128145
ISSN:
0022-1694
Subject:
suspended sediment,   etc   ; equations; models; sediment transport; sediments; turbulent flow;     Show all 6 Subjects
Abstract:
... The present paper formulates a generalized model for non-equilibrium suspended sediment transport through an open channel turbulent flow that contains all the existing models in literature as special cases. The two-dimensional (2D) unsteady model for suspended concentration distribution contains the effect of hindered settling and the bottom boundary condition considers deposition velocity togethe ...
DOI:
10.1016/j.jhydrol.2022.128145

7. Water-sediment synergistic relationship in the flood season in the coarse sand source regions of the loess plateau, China

Author:
Lina Wang; Li Liu
Source:
Journal of contaminant hydrology 2022 v.245 pp. 103935
ISSN:
0169-7722
Subject:
suspended sediment,   etc   ; irrigation; rivers; runoff; sand; sediment transport; China;     Show all 7 Subjects
Abstract:
... A number of studies have been conducted to determine the relationships between runoff and sediment under different conditions. However, the water-sediment synergistic relationship, which refers to the degree of intervention between the runoff and suspended sediment transport processes in the flood season, must be further analyzed. This study proposed the concept of the synergy degree between water ...
DOI:
10.1016/j.jconhyd.2021.103935

8. Real-Time Properties of Hydraulic Jump off a Tidal Bore, Its Generation and Transport Mechanisms: A Case Study of the Kampar River Estuary, Indonesia

Author:
Ulung Jantama Wisha; Yusuf Jati Wijaya; Yukiharu Hisaki
Source:
Water 2022 v.14 no.16 pp. -
ISSN:
2073-4441
Subject:
suspended sediment,   etc   ; case studies; estuaries; rivers; sediments; tides; water; Indonesia;     Show all 8 Subjects
Abstract:
... Since the hydraulic jump off a tidal bore in the Kampar Estuary has never been well-described, real-time measurements of hydraulic jump properties are crucial to understanding the tidal bore characteristics. This study aims to determine the real-time properties of a tidal bore generation, hydraulic jump, and transport mechanism in the Kampar River estuary. Tidal harmonic and range are analyzed usi ...
DOI:
10.3390/w14162561

9. End-to-End Neural Interpolation of Satellite-Derived Sea Surface Suspended Sediment Concentrations

Author:
Jean-Marie Vient; Ronan Fablet; Frédéric Jourdin; Christophe Delacourt
Source:
Remote Sensing 2022 v.14 no.16 pp. -
ISSN:
2072-4292
Subject:
suspended sediment,   etc   ; data collection; microorganisms; photosynthesis; primary productivity; sediments; turbidity;     Show all 7 Subjects
Abstract:
... The characterization of suspended sediment dynamics in the coastal ocean provides key information for both scientific studies and operational challenges regarding, among others, turbidity, water transparency and the development of micro-organisms using photosynthesis, which is critical to primary production. Due to the complex interplay between natural and anthropogenic forcings, the understanding ...
DOI:
10.3390/rs14164024

10. Feedback Effects of Sediment Suspensions on Transport Mechanisms in an Estuarine Turbidity Maximum

Author:
Chunyan Zhu; D. S. van Maren; Leicheng Guo; Jianliang Lin; Qing He; Zheng Bing Wang
Source:
Journal of geophysical research 2022 v.127 no.6 pp. e2021JC018029
ISSN:
2169-9275
Subject:
suspended sediment,   etc   ; advection; asymmetry; estuaries; geophysics; models; research; sediments; turbidity;     Show all 9 Subjects
Abstract:
... The mechanisms controlling the formation of an estuarine turbidity maximum (ETM) in estuaries have been extensively investigated, but one aspect that has received much less scientific attention is the role of high suspended sediment concentrations in combination with tidal asymmetry in ETM formation. Particularly in highly turbid estuaries, sediment suspensions influence ETM development through a ...
DOI:
10.1029/2021JC018029

11. Near‐Bed Sediment Transport During Offshore Bar Migration in Large‐Scale Experiments

Author:
Florian Grossmann; David Hurther; Joep van der Zanden; Iván Cáceres; Agustín Sánchez‐Arcilla; José M. Alsina
Source:
Journal of geophysical research 2022 v.127 no.5 pp. e2021JC017756
ISSN:
2169-9275
Subject:
suspended sediment,   etc   ; acoustics; bedload; geophysics; hydrodynamics; research; sand; sediment transport;     Show all 8 Subjects
Abstract:
... This study presents novel insights into hydrodynamics and sediment fluxes in large‐scale laboratory experiments with bichromatic wave groups on a relatively steep initial beach slope (1:15). An Acoustic Concentration and Velocity Profiler provided detailed information of velocity and sand concentration near the bed from shoaling up to the outer breaking zone including suspended sediment and sheet ...
DOI:
10.1029/2021JC017756

12. Fate of 14C-labelled ionic organic chemicals in a water-sediment system and surface water

Author:
Hannah Holzmann; Daniela Claßen; Juliane Ackermann; Andreas Schäffer
Source:
Chemosphere 2022 v.303 pp. 134885
ISSN:
0045-6535
Subject:
suspended sediment,   etc   ; half life; mineralization; radioactivity; radiolabeling; sodium; sorption; surface water;     Show all 8 Subjects
Abstract:
... The persistence assessment of organic chemicals is based on neutral reference substances. Therefore, our study aimed at investigating the influence of a chemical charge on the degradation of organic compounds in a water-sediment system (OECD 308) and surface water (OECD 309). We used radiolabelled 4-n-dodecylbenzenesulfonic acid sodium salt (¹⁴C-DS⁻, anionic), 4-n-dodecylbenzyltrimethylammonium ch ...
DOI:
10.1016/j.chemosphere.2022.134885

13. Hyperspectral retrievals of suspended sediment using cluster-based machine learning regression in shallow waters

Author:
Siyoon Kwon; Il Won Seo; Hyoseob Noh; Byunguk Kim
Source:
Science of the total environment 2022 v.833 pp. 155168
ISSN:
0048-9697
Subject:
suspended sediment,   etc   ; data collection; environment; models; reflectance; sand; submerged aquatic plants;     Show all 7 Subjects
Abstract:
... Remote sensing of suspended sediment in shallow waters is challenging because of the increased optical variability of the water, resulting from the influence of suspended matter in the water column and the heterogeneous bottom properties. To overcome this limitation, in this study, we developed a novel framework called cluster-based machine learning regression for optical variability (CMR-OV), usi ...
DOI:
10.1016/j.scitotenv.2022.155168

14. The Importance of Storm Surge for Sediment Delivery to Microtidal Marshes

Author:
Qingguang Zhu; Patricia L. Wiberg
Source:
Journal of geophysical research 2022 v.127 no.9 pp. e2022JF006612
ISSN:
2169-9003
Subject:
suspended sediment,   etc   ; geophysics; hydrodynamics; marshes; models; research; sediments; storms; wind; Virginia;     Show all 10 Subjects
Abstract:
... Storm surge has the potential to significantly increase suspended sediment flux to microtidal marshes. However, the overall effects of storm surge on microtidal marsh deposition have not been well quantified, with most modeling studies focusing on regular (astronomical) tidal flooding. Here we applied the Delft3D model to a microtidal bay‐marsh complex in Hog Bay, Virginia to quantify the contribu ...
DOI:
10.1029/2022JF006612

15. Reach-scale experiments on deposition process in vegetated channel: Suspended sediment capturing ability and backwater effect of instream plants

Author:
Oral Yagci; Kyle Strom
Source:
Journal of hydrology 2022 v.608 pp. 127612
ISSN:
0022-1694
Subject:
suspended sediment,   etc   ; fluid mechanics; hydraulic flumes; rivers; sediment transport; sediments; vegetation;     Show all 7 Subjects
Abstract:
... Instream plants, which act as biological processors, have emerged as potentially advantageous eco-morphologic tools to be used in river management and restoration. Most of the study on the geomorphic role of vegetation as it interacts with flow and sediment has focused on local patch-scale dynamics. In this study, we present flume experiments aimed at improving our understanding of how vegetation ...
DOI:
10.1016/j.jhydrol.2022.127612

16. Aerial Observations and Numerical Simulations Confirm Density‐Driven Streamwise Vortices at a River Confluence

Author:
J. Duguay; P. M. Biron; J. Lacey
Source:
Water resources research 2022 v.58 no.7 pp. e2021WR031527
ISSN:
0043-1397
Subject:
suspended sediment,   etc   ; habitats; hydrodynamics; instrumentation; research; rivers; sediment transport; turbidity; velocimetry; water;     Show all 10 Subjects
Abstract:
... When rivers collide, complex three‐dimensional coherent flow structures are generated along the confluence's mixing interface. These structures mix streamborne pollutants and suspended sediment and have considerable bearing on the morphology and habitat quality of the postconfluent reach. A particular structure of interest—streamwise orientated vortices (SOVs)—were first detected in numerical simu ...
DOI:
10.1029/2021WR031527

17. Evolution model of shoreline position on sandy, wave-dominated beaches

Author:
Changbin Lim; Tae-Kon Kim; Jung-Lyul Lee
Source:
Geomorphology 2022 v.415 pp. 108409
ISSN:
0169-555X
Subject:
suspended sediment,   etc   ; differential equation; evolution; models; prediction; shorelines; spectral analysis; New Zealand;     Show all 8 Subjects
Abstract:
... In this study, we derived an ordinary differential equation governing temporal changes in shoreline position by analyzing the horizontal behavior of suspended sediment due to storm waves. The derived governing equation has a mathematical form similar to that of current empirical models. However, because the equation was derived physically, it clearly reveals the characteristics of each physical co ...
DOI:
10.1016/j.geomorph.2022.108409

18. Prediction of suspended sediment concentration using hybrid SVM-WOA approaches

Author:
Sandeep Samantaray; Abinash Sahoo
Source:
Geocarto international 2022 v.37 no.19 pp. 5609-5635
ISSN:
1752-0762
Subject:
suspended sediment,   etc   ; basins; model validation; models; prediction; rivers; support vector machines; India;     Show all 8 Subjects
Abstract:
... Suspended sediment concentration (SSC) is one of the primary reasons with respect to watersheds or river basins, which must be assessed in a correct manner so that it will help decision makers to make right decisions regarding hydraulic structure, flash-flood, flood-mitigation of the basin. The present research evaluated efficacy of a hybrid model integrating Support Vector Machine with Whale opti ...
DOI:
10.1080/10106049.2021.1920638

19. Quantification of 3-dimensional structure and properties of flocculated natural suspended sediment

Author:
K.L. Spencer; J.A. Wheatland; S.J. Carr; A.J. Manning; A.J. Bushby; C. Gu; L. Botto; T. Lawrence
Source:
Water research 2022 v.222 pp. 118835
ISSN:
0043-1354
Subject:
suspended sediment,   etc   ; fractal dimensions; microscopy; porosity; research; sediment transport; sediments; surface water;     Show all 8 Subjects
Abstract:
... Natural sediment flocs are fragile and highly heterogeneous aggregates of biogenic and minerogenic material typically with high porosity and low density. In aquatic environments dominated by fine, cohesive or mixed sediments they can dominate suspended sediment flux. Consequently, monitoring and modelling the behaviour, transport and distribution of flocs is very important for many aquatic industr ...
DOI:
10.1016/j.watres.2022.118835

20. Modelling transverse mixing of sediment and vanadium in a river impacted by oil sands mining operations

Author:
Karl-Erich Lindenschmidt; Pouya Sabokruhie; Tammy Rosner
Source:
Journal of hydrology 2022 v.40 pp. 101043
ISSN:
2214-5818
Subject:
suspended sediment,   etc   ; floodplains; lakes; oils; rivers; streams; vanadium; water flow; water quality;     Show all 9 Subjects
Abstract:
... The lower Athabasca River was used as a test case using total suspended sediment, chloride and vanadium as the model variables. Upstream model boundary conditions included water from the tributary Clearwater River (right stream tube) and the upper Athabasca River extending upstream of the tributary mouth (left stream tube). This model will be extended to include the Peace-Athabasca Delta (PAD), to ...
DOI:
10.1016/j.ejrh.2022.101043