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Journal articles on the topic 'Sediment and solute transport'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

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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2

Guo, Jiameng, Lei Wang, and Dan Wu. "Effects of influent concentration and different valence cations on solute preferential transport in inter-tidal zone of Yellow River Estuary." E3S Web of Conferences 261 (2021): 03012. http://dx.doi.org/10.1051/e3sconf/202126103012.

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The migration of land-based pollutants in tidal flat sediments has an important impact on the marine ecological environment. The effects of three influent concentrations and two cation valence states on the preferential transport of NO3-N in the sediments of the Yellow River Estuary were studied by soil column experiments. Results showed that the preferential flow and solute transport were more obvious with the increase of influent concentration; The solute potential was increased in the process of solute transport, which led to the rapid flow, shortened the total time, and facilitated the sol

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3

NG, CHIU-ON, and T. L. YIP. "Effects of kinetic sorptive exchange on solute transport in open-channel flow." Journal of Fluid Mechanics 446 (October 23, 2001): 321–45. http://dx.doi.org/10.1017/s0022112001005791.

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A theory is presented for the transport in open-channel flow of a chemical species under the influence of kinetic sorptive exchange between phases that are dissolved in water and sorbed onto suspended sediments. The asymptotic method of homogenization is followed to deduce effective transport equations for both phases. The transport coefficients for the solute are shown to be functions of the local sediment concentration and therefore vary with space and time. The three important controlling parameters are the suspension number, the bulk solid–water distribution ratio and the sorption kinetics

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4

Shiono, Koji. "Pollutant and Sediment Transport Caused by Turbulent Diffusion in Rivers and Estuaries." Advanced Materials Research 374-377 (October 2011): 1750–57. http://dx.doi.org/10.4028/www.scientific.net/amr.374-377.1750.

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Solute (pollutant) and sediment transports directly relate to controlling water quality in water environment (e.g. river, estuary and reservoir). An understanding of turbulent diffusion is the key for improving water quality in rivers and estuaries. Many studies on turbulent diffusion have been carried out in open channels, compound channels and estuaries for different flow conditions in the past. This paper reviews the past research mainly carried out by the author and includes flow structures, solute concentration distributions, mixing parameters in simple open channel, compound channel, riv

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5

West, J. R., I. Guymer, Y. Sangodoyin, and K. O. K. Oduyemi. "Solute Dispersion and Sediment Transport in Estuaries." Water Science and Technology 18, no. 4-5 (1986): 93–100. http://dx.doi.org/10.2166/wst.1986.0184.

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Synoptic measurements of velocity and salinity at several points on up to five vertical profiles at a cross-section in the Conwy show that solute dispersion coefficients are affected by secondary flow induced by the interaction of transverse shear and the salinity induced longitudinal density gradient. It is concluded that dispersion coefficients are temporally and spatially dependent and a simple empirical formula is suggested. Some data from the initial stages of a similar study of sediment transport show that techniques exist which permit the study of the turbulent fluctuations of suspended

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6

Hasholt, B., S. A. Khan, and A. B. Mikkelsen. "GPS based surface displacements – a proxy for discharge and sediment transport from the Greenland Ice Sheet." Cryosphere Discussions 8, no. 4 (2014): 3829–50. http://dx.doi.org/10.5194/tcd-8-3829-2014.

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Abstract. The elastic respond of the Earth's surface to mass changes has been measured with Global Positioning System (GPS). Mass loss as accumulated runoff and sediment transport from a 10 000 km2 segment of the Greenland Ice Sheet (GrIS) correlated very well (R2 = 0.83) with GPS measured uplift. Accumulated winter precipitation correlated fairly well with surface depression (R2 = 0.69). The relationships are based on seven years of runoff and sediment transport observations from the Watson River (2007–2013), winter precipitation from Kangerlussuaq Airport and GPS observations at Kellyville.

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7

Sutherland, Ross A., and Rorke B. Bryan. "Solute sources and transport in an ephemeral badland catchment, southeastern Alberta, Canada." Canadian Journal of Earth Sciences 25, no. 2 (1988): 167–81. http://dx.doi.org/10.1139/e88-020.

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This study was carried out as part of an investigation of water and sediment budgets in an ephemeral catchment in Dinosaur Provincial Park badlands, Alberta. These badlands have developed in Cretaceous mudstones, siltstones, and sandstones, with some glacial and postglacial surficial deposits. Study objectives were (i) to identify major solute sources, (ii) to show how these change with storm characteristics, and (iii) to assess the proportion of solutes in the total stream budget. Field examination, rainfall-simulation tests, and laboratory experiments showed marked variations in solute produ

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8

Hasnain, Syed I., and Renoj J. Thayyen. "Sediment Transport and Solute Variation In Meltwaters of Dokriani Glacier (Bamak), Garhwal Himalaya." Journal Geological Society of India 47, no. 6 (1996): 731–39. http://dx.doi.org/10.17491/jgsi/1996/470609.

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Abstract Suspended sediment transport and major cations and anions with discharge were monitored between 28 August and 20 September 1992 in Dokriani glacier (Bamak), Garhwal Himalaya. The hydrograph and chemograph exhibit diurnal variation reflecting the conditions of meltwater transferred to the portal through different hydrological pathways. The suspended sediment transport on diurnal time scale peaks before the discharge peak, indicating that sediment transport reacts quickly to discharge. During the observation period sediment concentration show decreasing trend with discharge.

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9

Daunys, Forster, Schiedek, Olenin, and Zettler. "Effect of Species Invasion on Transport of Solutes at Different Levels of Soft Sediment Macrofauna Diversity: Results from an Experimental Approach." Water 11, no. 8 (2019): 1544. http://dx.doi.org/10.3390/w11081544.

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Different irrigation or ventilation strategies by macrofauna may provide a competitive advantage to tolerant species invading impacted benthic systems and alter benthic-pelagic coupling. To comparatively analyze the effects of an exotic and a native polychaete burrower on sediment-water exchanges, two laboratory experiments were performed. In the first experiment, the invasive spionid polychaete Marenzelleria neglecta was added to defaunated sediments and fluxes of the inert tracer (bromide, Br−) were measured to quantify the effects of irrigation by the worm on the tracer transport. In the se

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10

KHALILI, A., A. J. BASU, U. PIETRZYK, and M. RAFFEL. "An experimental study of recirculating flow through fluid–sediment interfaces." Journal of Fluid Mechanics 383 (March 25, 1999): 229–47. http://dx.doi.org/10.1017/s0022112098003942.

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We report here visualizations and quantitative measurements of scalar transport, under the influence of rotation, through permeable sediments with an overlying fluid layer. The experimental set-up considered here is a stationary cylinder containing a fluid-saturated porous medium up to its midheight, with supernatant water on top. A rotating lid generates, in the upper fluid region, a flow that partially percolates into the porous layer below. The velocity field in the fluid layer is obtained using particle image velocimetry (PIV). Further, dye transport from the sediment is studied using two

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11

Sochaczewski, Łukasz, Anthony Stockdale, William Davison, Wlodek Tych, and Hao Zhang. "A three-dimensional reactive transport model for sediments, incorporating microniches." Environmental Chemistry 5, no. 3 (2008): 218. http://dx.doi.org/10.1071/en08006.

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Environmental context. Modelling of discrete sites of diagenesis in sediments (microniches) has typically been performed in 1-D and has involved a limited set of components. Here we present a new 3-D model for microniches within a traditional vertical sequence of redox reactions, and show example modelled niches of a range of sizes, close to the sediment–water interface. Microniche processes may have implications for understanding trace metal diagenesis, via formation of sulfides. The model provides a quantitative framework for examining microniche data and concepts. Abstract. Most reactive tr

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12

Kortunov, Evgenii, Chuanhe Lu, Richard Amos, and Peter Grathwohl. "Redox hydrogeochemistry of organic rich floodplain exemplified by Ammer river." E3S Web of Conferences 98 (2019): 09014. http://dx.doi.org/10.1051/e3sconf/20199809014.

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Diffusive groundwater pollution caused by agricultural and atmospheric inputs is a pressing issue in environmental management worldwide. Various researchers have studied nitrate contamination since the substantial increase of nitrogen fertilization in agriculture starting in the second half of the 20th century. This study addresses large scale reactive solute transport in typical landscapes and aquifers exemplified by geological analogues of southwestern Germany.. Fate of nitrate and other solutes (e.g. agricultural nitrate, ammonium, natural sulfate and dissolved organic carbon) was studied i

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13

O’Connor, Jim E., Joseph F. Mangano, Daniel R. Wise, and Joshua R. Roering. "Eroding Cascadia—Sediment and solute transport and landscape denudation in western Oregon and northwestern California." GSA Bulletin 133, no. 9-10 (2021): 1851–74. http://dx.doi.org/10.1130/b35710.1.

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Abstract Riverine measurements of sediment and solute transport give empirical basin-scale estimates of bed-load, suspended-sediment, and silicate-solute fluxes for 100,000 km2 of northwestern California and western Oregon. This spatially explicit sediment budget shows the multifaceted control of geology and physiography on the rates and processes of fluvial denudation. Bed-load transport is greatest for steep basins, particularly in areas underlain by the accreted Klamath terrane. Bed-load flux commonly decreases downstream as clasts convert to suspended load by breakage and attrition, partic

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14

Liljestrand, H. M., and Y. D. Lee. "Sorption Kinetics of Non-Ionic Organic Pollutants Onto Suspended Sediments." Water Science and Technology 23, no. 1-3 (1991): 447–54. http://dx.doi.org/10.2166/wst.1991.0444.

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The results of controlled batch experimental studies of the adsorption and desorption kinetics of dichlorobenzene to 1) size fractionated, washed sediments, 2) aggregate, washed sediment, 3) dissolved/colloidal sediment materials, and 4) bulk sediments,are used to determine the effect of inhomogeneous mixtures on the overall sorption rates. The size-segregated sediments are modeled as spherical particles with a porous outer shell of organic matter for sorption and an inert, inorganic core. The characteristic times of intraparticle diffusive transport are found to vary with particle size by abo

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15

Dyke, Larry D. "Contaminant migration through the permafrost active layer, Mackenzie Delta area, Northwest Territories, Canada." Polar Record 37, no. 202 (2001): 215–28. http://dx.doi.org/10.1017/s0032247400027248.

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AbstractBuried pits (sumps), used for the disposal of drilling muds in the Mackenzie Delta area of Arctic Canada, provide an opportunity for assessing the effectiveness of ice-bonded permafrost sediments as a containment for industrial wastes. Potassium chloride (KCI) added to drilling muds as a freezing-point depressant provides a suitable tracer, because it is easily identified and natural concentrations in sediment pore water are typically low (less than 0.02 g l−1; potassium). Muds with KCI concentrations of up to 10% by weight (100 g l−1) have been used. In the vicinity of sumps, potassiu

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16

Vopel, K., M. Gibbs, C. W. Hickey, and J. Quinn. "Modification of sediment - water solute exchange by sediment-capping materials: effects on O2 and pH." Marine and Freshwater Research 59, no. 12 (2008): 1101. http://dx.doi.org/10.1071/mf08130.

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The release of phosphorus from sediments can stimulate algal blooms in eutrophic water bodies worldwide. One technique to reduce this release involves capping the sediment with millimetre-thick layers of chemically active materials such as aluminium hydroxide floc (alum), and the mineral-based products Phoslock and modified zeolite. The effects of this technique on transport and reaction of diagenetically important sediment compounds other than phosphorus are unknown. The present study used microelectrodes to measure the apparent gas diffusivity of capping layers derived from different doses o

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17

Baioni, E., G. M. Porta, M. Mousavi Nezhad, and A. Guadagnini. "Assessment of turbulence effects on effective solute diffusivity close to a sediment-free fluid interface." Stochastic Environmental Research and Risk Assessment 34, no. 12 (2020): 2211–28. http://dx.doi.org/10.1007/s00477-020-01877-y.

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AbstractOur work is focused on the analysis of solute mixing under the influence of turbulent flow propagating in a porous system across the interface with a free fluid. Such a scenario is representative of solute transport and chemical mixing in the hyporheic zone. The study is motivated by recent experimental results (Chandler et al. Water Res Res 52(5):3493–3509, 2016) which suggested that the effective diffusion parameter is characterized by an exponentially decreasing trend with depth below the sediment-water interface. This result has been recently employed to model numerically downstrea

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18

Clarke, Garry K. C. "Lumped-element model for subglacial transport of solute and suspended sediment." Annals of Glaciology 22 (1996): 152–59. http://dx.doi.org/10.3189/1996aog22-1-152-159.

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Present understanding of the subglacial water system and its role in transporting solute and sediment is largely based on subglacial observations of water pressure, turbidity and electrical conductivity and on portal measurements. Such data reveal a wealth of intriguing phenomena, but convincing interpretations can be elusive. Although a proper mathematical description of the subglacial water system would unquestionably lead to a coupled system of non-linear partial differential equations, it is not fruitful to introduce this level of complexity until the important physical processes have been

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19

Clarke, Garry K. C. "Lumped-element model for subglacial transport of solute and suspended sediment." Annals of Glaciology 22 (1996): 152–59. http://dx.doi.org/10.1017/s0260305500015354.

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Present understanding of the subglacial water system and its role in transporting solute and sediment is largely based on subglacial observations of water pressure, turbidity and electrical conductivity and on portal measurements. Such data reveal a wealth of intriguing phenomena, but convincing interpretations can be elusive. Although a proper mathematical description of the subglacial water system would unquestionably lead to a coupled system of non-linear partial differential equations, it is not fruitful to introduce this level of complexity until the important physical processes have been

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20

Bogena, Heye R., and Bernd Diekkrüger. "Modelling solute and sediment transport at different spatial and temporal scales." Earth Surface Processes and Landforms 27, no. 13 (2002): 1475–89. http://dx.doi.org/10.1002/esp.442.

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21

Faber, P. A., A. J. Kessler, J. K. Bull, I. D. McKelvie, F. J. R. Meysman, and P. L. M. Cook. "The role of alkalinity generation in controlling the fluxes of CO<sub>2</sub> during exposure and inundation on tidal flats." Biogeosciences Discussions 9, no. 5 (2012): 5445–69. http://dx.doi.org/10.5194/bgd-9-5445-2012.

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Abstract. Dissolved inorganic carbon, CO2 and alkalinity fluxes from intertidal sediments were investigated during periods of exposure and inundation, using laboratory core incubations, field data and reactive transport model simulations. In the incubations and field data, it was found that during periods of alkalinity production, the flux of dissolved inorganic carbon (DIC) out of the sediment was significantly greater during inundation periods. This alkalinity production was attributed to the accumulation of reduced sulfur species within the sediment. This finding was supported by computatio

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22

Alqusaireen, Eatedal, Claudio Meier, and Farhad Jazaei. "High-Resolution Sensor System to Investigate Solute Transport in Saturated Sediments." Journal of the ASABE 67, no. 4 (2024): 909–15. http://dx.doi.org/10.13031/ja.15876.

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Highlights Innovative sensor system was developed to detect solute transport at very high time resolutions. The sensors measure electrical conductivity as voltage drops at a frequency of up to 10 Hz, allowing for detailed solute breakthrough curves (BTCs). One-dimensional solute transport equations were modeled numerically using the finite differences technique, and the results show good agreement between the modeled BTCs and those obtained in the laboratory for all materials. Abstract. Hyporheic exchange flow, the movement of river water into streambed sediments and its subsequent return to t

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23

Gaus, I., and K. Vande Casteele. "Assessing the contamination risk of five pesticides in a phreatic aquifer based on microcosm experiments and transport modelling at Sint-Jansteen (Zeeland, the Netherlands)." Netherlands Journal of Geosciences - Geologie en Mijnbouw 83, no. 2 (2004): 101–12. http://dx.doi.org/10.1017/s0016774600020072.

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AbstractThe risk of five pesticides (atrazine, simazine, bentazone, mecoprop and MCPA) contaminating a Quaternary phreatic aquifer (the water supply area of Sint-Jansteen, the Netherlands) is assessed based on laboratory experiments and solute transport modelling (MODFLOW-MT3D). Batch experiments either show long half-lives (at least 1500 days) or no degradation at all for bentazone, atrazine and simazine while mecoprop and especially MCPA degrade much faster (half-lives down to 4.1 days). Column experiments show significant sorption to the aquifer sediment only for atrazine and simazine under

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24

Bonanno, Enrico, Günter Blöschl, and Julian Klaus. "Exploring tracer information in a small stream to improve parameter identifiability and enhance the process interpretation in transient storage models." Hydrology and Earth System Sciences 26, no. 23 (2022): 6003–28. http://dx.doi.org/10.5194/hess-26-6003-2022.

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Abstract. The transport of solutes in river networks is controlled by the interplay of processes such as in-stream solute transport and the exchange of water between the stream channel and dead zones, in-stream sediments, and adjacent groundwater bodies. Transient storage models (TSMs) are a powerful tool for testing hypotheses related to solute transport in streams. However, model parameters often do not show a univocal increase in model performances in a certain parameter range (i.e. they are non-identifiable), leading to an unclear understanding of the processes controlling solute transport

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25

Bunch, M. A., R. Mackay, J. H. Tellam, and P. Turner. "A model for simulating the deposition of water-lain sediments in dryland environments." Hydrology and Earth System Sciences 8, no. 2 (2004): 122–34. http://dx.doi.org/10.5194/hess-8-122-2004.

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Abstract. A numerical process-imitating model, the Discrete Storm Event Sedimentation Simulator (DSESS), has been developed to represent the climatic and hydraulic conditions of drylands in modelling their geomorphological development and sedimentary facies distributions. The ultimate aim is to provide insights into the lateral variability of permeability in the Triassic Sandstone aquifers of the UK for the study of solute movement. DSESS employs discrete storm-flood automata, released across a cellular landscape, to model sediment transport: erosion, migration and deposition. Sediment classes

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26

Guo, Tailong, Quanjiu Wang, Dingqiang Li, Jie Zhuang, and Laosheng Wu. "Flow hydraulic characteristic effect on sediment and solute transport on slope erosion." CATENA 107 (August 2013): 145–53. http://dx.doi.org/10.1016/j.catena.2013.03.001.

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27

Marttila, H., S. Tammela, K. R. Mustonen, et al. "Contribution of flow conditions and sand addition on hyporheic zone exchange in gravel beds." Hydrology Research 50, no. 3 (2019): 878–85. http://dx.doi.org/10.2166/nh.2019.099.

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Abstract We conducted a series of tracer test experiments in 12 outdoor semi-natural flumes to assess the effects of variable flow conditions and sand addition on hyporheic zone conditions in gravel beds, mimicking conditions in headwater streams under sediment pressure. Two tracer methods were applied in each experiment: 2–5 tracer-pulse tests were conducted in all flumes and pulses were monitored at three distances downstream of the flume inlet (0 m, 5 m and 10 m, at bed surface), and in pipes installed into the gravel bed at 5 m and 10 m distances. The tracer breakthrough curves (total of 1

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28

Howe, Rebecca L., Andrew P. Rees, and Stephen Widdicombe. "The impact of two species of bioturbating shrimp (Callianassa subterranea and Upogebia deltaura) on sediment denitrification." Journal of the Marine Biological Association of the United Kingdom 84, no. 3 (2004): 629–32. http://dx.doi.org/10.1017/s002531540400966xh.

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In a benthic mesocosm experiment, the effects of two species of burrowing Thalassinidean shrimps (Callianassa subterranea and Upogebia deltaura) on rates of sediment denitrification were determined using the isotope pairing technique. Denitrification rate (Dtot) and coupled nitrification–denitrification (Dn) were shown to be significantly enhanced by the presence of U. deltaura by 2·9 and 3·3 times respectively, relative to control measurements. For U. deltaura the stimulation of the denitrification rate was found to be significantly related to the size of the animal (F=5·81, P=0·042). No devi

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29

Kashefipour, S. M., A. A. Tavakoli, and R. A. Falconer. "Water Quality Modelling by Numerical Solution of ADE Using An Integrated Model." Asian Journal of Water, Environment and Pollution 4, no. 2 (2007): 11–15. http://dx.doi.org/10.3233/ajw-2007-4_2_02.

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Sediment and solute transport processes are the most important existing problems in the coastal, estuarine and riverine waters. Prediction of these processes may be carried out using the numerical solution of the partial differential and dynamic Advective–Diffusion Equation (ADE). The type of the numerical solution is considerably effective on the stability and accuracy of the solution. In this paper an integrated new and effective scheme has been presented, combining two different numerical methods including ULTIMATE QUICKEST (UQ) and finite difference central scheme for solving ADE. This int

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30

McMANUS, J. "Land-derived sediment and solute transport to the Forth and Tay estuaries, Scotland." Journal of the Geological Society 143, no. 6 (1986): 927–34. http://dx.doi.org/10.1144/gsjgs.143.6.0927.

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31

Chen, Lin, Jiří Šimůnek, Scott A. Bradford, Hoori Ajami, and Menberu B. Meles. "Coupling water, solute, and sediment transport into a new computationally efficient hydrologic model." Journal of Hydrology 628 (January 2024): 130495. http://dx.doi.org/10.1016/j.jhydrol.2023.130495.

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Matsui, George Y., David B. Ringelberg, and Charles R. Lovell. "Sulfate-Reducing Bacteria in Tubes Constructed by the Marine Infaunal Polychaete Diopatra cuprea." Applied and Environmental Microbiology 70, no. 12 (2004): 7053–65. http://dx.doi.org/10.1128/aem.70.12.7053-7065.2004.

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ABSTRACT Marine infaunal burrows and tubes greatly enhance solute transport between sediments and the overlying water column and are sites of elevated microbial activity. Biotic and abiotic controls of the compositions and activities of burrow and tube microbial communities are poorly understood. The microbial communities in tubes of the marine infaunal polychaete Diopatria cuprea collected from two different sediment habitats were examined. The bacterial communities in the tubes from a sandy sediment differed from those in the tubes from a muddy sediment. The difference in community structure

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Matisoff, Gerald, and Xiaosong Wang. "Solute transport in sediments by freshwater infaunal bioirrigators." Limnology and Oceanography 43, no. 7 (1998): 1487–99. http://dx.doi.org/10.4319/lo.1998.43.7.1487.

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Qian, Qin, Vaughan Voller, and Heinz G. Stefan. "Modeling of solute transport into sub-aqueous sediments." Applied Mathematical Modelling 31, no. 8 (2007): 1461–78. http://dx.doi.org/10.1016/j.apm.2006.09.001.

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Cheng, Chiu H., Markus Huettel, and Richard A. Wildman. "Ebullition-enhanced solute transport in coarse-grained sediments." Limnology and Oceanography 59, no. 5 (2014): 1733–48. http://dx.doi.org/10.4319/lo.2014.59.5.1733.

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Vereecken, H., U. Jaekel, O. Esser, and O. Nitzsche. "Solute transport analysis of bromide, uranin and LiCl using breakthrough curves from aquifer sediment." Journal of Contaminant Hydrology 39, no. 1-2 (1999): 7–34. http://dx.doi.org/10.1016/s0169-7722(99)00033-9.

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Bogena, H., B. Diekkrüger, K. Klingel, K. Jantos, and J. Thein. "Analysing and modelling solute and sediment transport in the catchment of the Wahnbach River." Physics and Chemistry of the Earth, Parts A/B/C 28, no. 6-7 (2003): 227–37. http://dx.doi.org/10.1016/s1474-7065(03)00032-9.

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38

Stauffer, Fritz. "Impact of highly permeable sediment units with inclined bedding on solute transport in aquifers." Advances in Water Resources 30, no. 11 (2007): 2194–201. http://dx.doi.org/10.1016/j.advwatres.2007.04.008.

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Barry, D. A., G. C. Sander, S. Jomaa, L. Yeghiazarian, T. S. Steenhuis, and J. S. Selker. "Solute and sediment transport at laboratory and field scale: Contributions of J.-Y. Parlange." Water Resources Research 49, no. 10 (2013): 6111–36. http://dx.doi.org/10.1002/wrcr.20510.

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40

Clayer, François, Yves Gélinas, André Tessier, and Charles Gobeil. "Mineralization of organic matter in boreal lake sediments: rates, pathways, and nature of the fermenting substrates." Biogeosciences 17, no. 18 (2020): 4571–89. http://dx.doi.org/10.5194/bg-17-4571-2020.

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Abstract. The complexity of organic matter (OM) degradation mechanisms represents a significant challenge for developing biogeochemical models to quantify the role of aquatic sediments in the climate system. The common representation of OM by carbohydrates formulated as CH2O in models comes with the assumption that its degradation by fermentation produces equimolar amounts of methane (CH4) and dissolved inorganic carbon (DIC). To test the validity of this assumption, we modelled using reaction-transport equation vertical profiles of the concentration and isotopic composition (δ13C) of CH4 and

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Birkinshaw, S. J. "Technical Note: Automatic river network generation for a physically-based river catchment model." Hydrology and Earth System Sciences Discussions 7, no. 3 (2010): 3237–48. http://dx.doi.org/10.5194/hessd-7-3237-2010.

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Abstract. SHETRAN is a physically-based distributed modelling system that gives detailed simulations in time and space of water flow and sediment and solute transport in river catchments. Standard algorithms for the automatic generation of river channel networks from digital elevation data are impossible to apply in SHETRAN and other similar models because the river channels are assumed to run along the edges of grid cells. In this work a new algorithm for the automatic generation of a river channel network in SHETRAN is described and its use in an example catchment demonstrated.

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Birkinshaw, S. J. "Technical Note: Automatic river network generation for a physically-based river catchment model." Hydrology and Earth System Sciences 14, no. 9 (2010): 1767–71. http://dx.doi.org/10.5194/hess-14-1767-2010.

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Abstract. SHETRAN is a physically-based distributed modelling system that gives detailed simulations in time and space of water flow and sediment and solute transport in river catchments. Standard algorithms for the automatic generation of river channel networks from digital elevation data are impossible to apply in SHETRAN and other similar models because the river channels are assumed to run along the edges of grid cells. In this work a new algorithm for the automatic generation of a river channel network in SHETRAN is described and its use in an example catchment demonstrated.

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Baram, S., Z. Ronen, D. Kurtzman, C. Külls, and O. Dahan. "Desiccation-crack-induced salinization in deep clay sediment." Hydrology and Earth System Sciences 17, no. 4 (2013): 1533–45. http://dx.doi.org/10.5194/hess-17-1533-2013.

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Abstract. A study on water infiltration and solute transport in a clayey vadose zone underlying a dairy farm waste source was conducted to assess the impact of desiccation cracks on subsurface evaporation and salinization. The study is based on five years of continuous measurements of the temporal variation in the vadose zone water content and on the chemical and isotopic composition of the sediment and pore water in it. The isotopic composition of water stable isotopes (δ18O and δ2H) in water and sediment samples, from the area where desiccation crack networks prevail, indicated subsurface ev

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Baram, S., Z. Ronen, D. Kurtzman, C. Küells, and O. Dahan. "Desiccation-crack-induced salinization in deep clay sediment." Hydrology and Earth System Sciences Discussions 9, no. 11 (2012): 13155–89. http://dx.doi.org/10.5194/hessd-9-13155-2012.

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Abstract. A study on water infiltration and solute transport in a clayey vadose zone underlying a dairy farm waste source was conducted to assess the impact of desiccation cracks on subsurface evaporation and salinization. The study is based on five years of continuous measurements of the temporal variation in the vadose zone water-content and on the chemical and isotopic composition of the sediment and pore-water in it. The isotopic composition of water stable isotopes (δ18O and δ2H) in water and sediment samples, from the area where desiccation crack networks prevail, indicated subsurface ev

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Michaud, Emma, Robert C. Aller, Qingzhi Zhu, Christina Heilbrun, and Georges Stora. "Density and size-dependent bioturbation effects of the infaunal polychaete Nephtys incisa on sediment biogeochemistry and solute exchange." Journal of Marine Research 79, no. 4 (2021): 181–220. http://dx.doi.org/10.1357/002224021834670801.

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The impact of bioturbation on the geochemistry of aquatic sediments is known to depend on the benthic infauna species that are present. However, burrowing and activity patterns of each species may also change during the different stages of a life cycle. In this study, we examined the effects of four size classes of the polychaete Nephtys incisa on burrow networks and sediment biogeochemistry. In our experimental aquaria, the total biovolume (~ biomass) of Nephtys was kept constant, but different age classes were introduced, so the size and abundance varied between treatments. Despite differenc

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Hedman, Jenny E., Jonas S. Gunnarsson, Göran Samuelsson, and Franck Gilbert. "Particle reworking and solute transport by the sediment-living polychaetes Marenzelleria neglecta and Hediste diversicolor." Journal of Experimental Marine Biology and Ecology 407, no. 2 (2011): 294–301. http://dx.doi.org/10.1016/j.jembe.2011.06.026.

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Meile, Christof, and Philippe Van Cappellen. "Global estimates of enhanced solute transport in marine sediments." Limnology and Oceanography 48, no. 2 (2003): 777–86. http://dx.doi.org/10.4319/lo.2003.48.2.0777.

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Casey, William H., and Antonio C. Lasaga. "Modeling solute transport and sulfate reduction in marsh sediments." Geochimica et Cosmochimica Acta 51, no. 5 (1987): 1109–20. http://dx.doi.org/10.1016/0016-7037(87)90204-3.

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Shum, K. T. "A numerical study of the wave-induced solute transport above a rippled bed." Journal of Fluid Mechanics 299 (September 25, 1995): 267–88. http://dx.doi.org/10.1017/s0022112095003508.

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The role of wave-induced separated flow in solute transport above a rippled bed is studied from numerical solutions to the two-dimensional Navier–Strokes equations and the advection-diffusion equation. A horizontal ambient flow that varies sinusoidally in time is imposed far above the bed, and a constant concentration difference between the upper and lower boundaries of computation is assumed. The computed flow field is the sum of an oscillatory rectilinear flow and a vortical flow which is periodic both in time and in the horizontal. Poincaré sections of this flow suggest chaotic mixing. Vert

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Saikia, Lalit, and Chandan Mahanta. "A Mass Balance Approach in Sediment Budgeting of Large Alluvial Rivers with special emphasis on the Brahmaputra in Assam." Journal of The Indian Association of Sedimentologists 38, no. 2 (2021): 15–24. http://dx.doi.org/10.51710/jias.v38i2.115.

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Morphology of an alluvial river channel is the consequence of erosion, sediment transport and sedimentation in a river. Sediment budget accounts for the sources, sinks and redistribution pathways of sediments, solutes and nutrients in a unit region over unit time. Human activities are the most important factors that affect the variation in the pattern of river sediment load. This paper discusses sediment budget of a few large rivers by review of literature and estimation of sediment budget of Brahmaputra River in Assam using mass balance approach. An attempt has also been made to discuss human

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