Academic literature on the topic 'Fluvial bedforms'

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Journal articles on the topic "Fluvial bedforms"

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Seminara, Giovanni. "Effect of Grain Sorting on the Formation of Bedforms." Applied Mechanics Reviews 48, no. 9 (September 1, 1995): 549–63. http://dx.doi.org/10.1115/1.3023144.

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Grain sorting is a process observed in fluvial, coastal, and estuarian environments whereby the selective transport of different fractions of a sediment mixture gives rise to a non-uniform spatial distribution of the grain size probability density function. The formation of some fluvial bedforms (bedloadsheets and sand ridges) is shown to be generated or dominantly controlled by grain sorting. However, most bedforms (river dunes, free and forced fluvial bars, coastal ripples) are moderately affected by the sorting mechanism which is invariably found to lead to a damping effect on bedform growth. Recent investigations of the above phenomena are reviewed and new methodologic aspects arising in treating the instability of flow and bed topography in the presence of mixtures are pointed out.
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Wooldridge, C. L., and E. J. Hickin. "Step-pool and cascade morphology, Mosquito Creek, British Columbia: a test of four analytical techniques." Canadian Journal of Earth Sciences 39, no. 4 (April 1, 2002): 493–503. http://dx.doi.org/10.1139/e01-087.

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The identification and geometric definition of individual cascade and step-pool bedforms are investigated in a steep, coarse-grained, mountain stream, Mosquito Creek, by testing four analytical techniques: visual identification, zero-crossing, bedform differencing, and power spectral analysis. The test is the first use of these techniques in a headwater stream, and the analysis of two bed profiles showed that visual identification was able to (i) identify, (ii) determine the geometry of, and (iii) classify the type of individual bedforms better than the other methods. The other techniques were not able to differentiate step-pools from cascades, and the large range of grain sizes and bedform heights hampered their ability to consistently identify stepped bedforms. The step-pool (pronounced, channel-spanning steps that alternate with channel-spanning pools) and cascade (multi-tiered, partially channel-spanning structures) morphology in Mosquito Creek has formed in the last 20 years as fluvial action has restructured its previously engineered, revetment-lined, planar bed. The channel bed exhibits a morphologic regularity that power spectral analysis captured as periodic fluctuations in the bed profiles, with mean wavelengths slightly greater than those identified by the other methods. Further, the active reorganization of revetment has formed stepped structures with geometries similar (i.e., height to wavelength ratios) to stepped features found in natural mountain streams. Channel slope partially controlled bedform geometry (wavelength and height), and bedform height weakly controlled individual step spacing, but there was no relation between wavelength and grain size (D90).
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Tinkler, K. J. "Fluvially sculpted rock bedforms in Twenty Mile Creek, Niagara Peninsula, Ontario." Canadian Journal of Earth Sciences 30, no. 5 (May 1, 1993): 945–53. http://dx.doi.org/10.1139/e93-079.

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Sculpted rock bedforms (s-forms) on Whirlpool Sandstone are described from the bed of Twenty Mile Creek. The morphologies identified (undulating surfaces, rises, furrows, comma forms, spindles, potholes, and transverse troughs) are those described for sculpted bedrock forms (p-forms, s-forms) developed in subglacial environments. Additional morphologies identified are undercut downsteps and quarried surfaces in the lee of bedrock rises. Morphological differences between the subglacial and fluvial forms are attributed to the difference between confined conduit flow in the subglacial case and open-channel flow in the fluvial examples. In fluvial systems the descending bedrock surface presents rock differently to oncoming flows and favours certain s-forms (quarried lee faces and undulating surfaces). In a strong-flow fluvial environment s-forms develop by wear. Dominant sediment-transport modes are large clasts (up to metre dimensions) and suspended silt–clay with a small (< 7%) hard or heavy-mineral component. Hydraulic quarrying, which removes fracture-delimited blocks from the bed, interrupts the process. Although fluvial s-forms are similar to subglacial s-forms, large stable vortices may not exist in the fluvial context over the range of effective stages. Upper regime flow is common over bedrock reaches, and flow acceleration at small downsteps (knickpoints) magnifies the duration and spatial extent of wear effective velocities.
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Nones, Michael. "Special Issue “Laboratory Geosciences: Modelling Surface Processes” in Geosciences." Geosciences 8, no. 11 (October 25, 2018): 386. http://dx.doi.org/10.3390/geosciences8110386.

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In the last decades, new and advanced measurement techniques have been developed to track the dynamics of surface processes and the formation of river bedforms, bars and island as well as complex fluvial networks, gullies and rills by means of small-scale laboratory experiments, aiming to integrate and support mathematical models [...]
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Zomer, Judith Y., Suleyman Naqshband, and Antonius J. F. Hoitink. "Short communication: A tool for determining multiscale bedform characteristics from bed elevation data." Earth Surface Dynamics 10, no. 5 (September 6, 2022): 865–74. http://dx.doi.org/10.5194/esurf-10-865-2022.

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Abstract. Systematic identification and characterization of bedforms from bathymetric data are crucial in many studies of fluvial processes. Automated and accurate processing of bed elevation data is challenging where dune fields are complex or irregular and (especially) where multiple scales co-exist. Here, we introduce a new tool to quantify dune properties from bathymetric data representing large primary and smaller superimposed secondary dunes. A first step in the procedure is to decompose the bathymetric data using a LOESS algorithm. Steep lee-side slopes of primary dunes are preserved by implementing objective breaks in the algorithm, accounting for discontinuities in the bed elevation profiles at the toe of the lee-side slope. The steep lee slopes are then approximated by fitting a sigmoid function. Following the decomposition of the bathymetric data, bedforms are identified based on a zero crossing, and morphological properties are calculated. The approach to bedform decomposition presented herein is particularly applicable where secondary dunes are large and filtering using conventional continuously differentiable functions could thus easily lead to undesired smoothing of the primary morphology. Application of the tool to two bathymetric maps demonstrates that it successfully decomposes bathymetric data, identifies primary and secondary dunes, and preserves steeper lee-side slopes of primary dunes.
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Fowler, A. C., and M. Chapwanya. "An instability theory for the formation of ribbed moraine, drumlins and mega-scale glacial lineations." Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences 470, no. 2171 (November 8, 2014): 20140185. http://dx.doi.org/10.1098/rspa.2014.0185.

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We present a theory for the coupled flow of ice, subglacial water and subglacial sediment, which is designed to represent the processes which occur at the bed of an ice sheet. The ice is assumed to flow as a Newtonian viscous fluid, the water can flow between the till and the ice as a thin film, which may thicken to form streams or cavities, and the till is assumed to be transported, either through shearing by the ice, squeezing by pressure gradients in the till, or by fluvial sediment transport processes in streams or cavities. In previous studies, it was shown that the dependence of ice sliding velocity on effective pressure provided a mechanism for the generation of bedforms resembling ribbed moraine, while the dependence of fluvial sediment transport on water film depth provides a mechanism for the generation of bedforms resembling mega-scale glacial lineations. Here, we combine these two processes in a single model, and show that, depending largely on the granulometry of the till, instability can occur in a range of types which range from ribbed moraine through three-dimensional drumlins to mega-scale glacial lineations.
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Fathan Al-Hakim, Abdul Fauzan, and Yan Rizal. "Fasies Sedimentasi dan Elemen Arsitektur Formasi Citalang di Desa Sidamukti, Majalengka, Provinsi Jawa Barat." Jurnal Geologi dan Sumberdaya Mineral 22, no. 3 (October 5, 2021): 177. http://dx.doi.org/10.33332/jgsm.geologi.v22i3.643.

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Daerah Majalengka merupakan satu daerah di Jawa Barat yang sangat menarik untuk dilakukan kajian geologi baik yang berkaitan dengan sedimentologi, tektonik maupun paleontologi. Salah satu objek yang menarik untuk dikaji ulang adalah Formasi Citalang, dimana uraian tentang formasi ini masih banyak terdapat perbedaan tentang satuan batuan penyusunnya, umur dan lingkungan pengendapannya. Disini kajian tentang formasi Citalang ditinjau dari sedimentologinya.Formasi Citalang di daerah penelitian Desa Sidamukti, Kabupaten Majalengka, Provinsi Jawa Barat tersusun atas 6 satuan batuan, yaitu: perselingan batupasir dan konglomerat sisipan tuf, perselingan batupasir dan batulempung, perselingan batupasir dan konglomerat, batupasir sisipan batulanau, perselingan batupasir dan konglomerat dengan sisipan batulanau, serta perselingan batupasir dan batulanau. Dari pengukuran penampang stratigrafi lintasan terpilih didapatkan 10 litofasies yang secara keseluruhan dijumpai dalam masing-masing satuan batuan, berupa: Fine Mud (Fm), Fine Silt Mud (Fsm), Massive Sandstone (Sm), Horizontal Sandstone (Sh), Low Angle Cross Lamination Sandstone (Sl), Ripple Cross Lamination Sandstone (Sr), Trough Cross Bed Sandstone (St), Gravel Matrix Supported Graded Bedding (Gmg), Gravel Clast Supported Graded Bedding (Gcg), Gravel Clast Supported Massive (Gcm). Elemen arsitektural yang terbentuk pada sistem pengendapan Formasi Citalang adalah Gravel Bar and Bedforms (GB), Sandy Bedform (SB), dan Sediment Gravity Flow (SG), yang diinterpretasikan terjadi pada lingkungan pengendapan fluvial berupa sungai teranyam.Katakunci: Formasi Citalang, elemen arsitektur, fluvial, litofasies, sungai teranyam.
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Wilson, Andrew, Niels Hovius, and Jens M. Turowski. "Upstream-facing convex surfaces: Bedrock bedforms produced by fluvial bedload abrasion." Geomorphology 180-181 (January 2013): 187–204. http://dx.doi.org/10.1016/j.geomorph.2012.10.010.

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Musa, Mirko, Craig Hill, Fotis Sotiropoulos, and Michele Guala. "Performance and resilience of hydrokinetic turbine arrays under large migrating fluvial bedforms." Nature Energy 3, no. 10 (July 30, 2018): 839–46. http://dx.doi.org/10.1038/s41560-018-0218-9.

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Yan, Ge, Heqin Cheng, Lizhi Teng, Wei Xu, Yuehua Jiang, Guoqiang Yang, and Quanping Zhou. "Analysis of the Use of Geomorphic Elements Mapping to Characterize Subaqueous Bedforms Using Multibeam Bathymetric Data in River System." Applied Sciences 10, no. 21 (October 30, 2020): 7692. http://dx.doi.org/10.3390/app10217692.

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Riverbed micro-topographical features, such as crest and trough, flat bed, and scour pit, indicate the evolution of fluvial geomorphology, and have an influence on the stability of underwater structures and overall scour pits. Previous studies on bedform feature extraction have focused mainly on the rhythmic bed surface morphology and have extracted crest and trough, while flat bed and scour pit have been ignored. In this study, to extend the feature description of riverbeds, geomorphic elements mapping was used by employing three geomorphic element classification methods: Wood’s criteria, a self-organization map (SOM) technique, and geomorphons. The results showed that geomorphic element mapping can be controlled by adjusting the slope tolerance and curvature tolerance of Wood’s criteria, using the map unit number and combination of the SOM technique and the flatness of geomorphons. Relatively flat bed can be presented using “plane”, “flat planar”, and “flat” elements, while scour pit can be presented using a “pit” element. A comparison of the difference between parameter settings for landforms and bedforms showed that SOM using 8 or 10 map units is applicable for land and underwater surface and is thus preferentially recommended for use. Furthermore, the use of geomorphons is recommended as the optimal method for characterizing bedform features because it provides a simple element map in the absence of area loss.
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Dissertations / Theses on the topic "Fluvial bedforms"

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Clunie, Thomas MacDougal. "Flow over fluvial bedforms." Thesis, University of Auckland, 2012. http://hdl.handle.net/2292/13073.

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The presence of bedforms (ripples or dunes) in fluvial flows creates complex flow fields, altering local velocities, flow resistance and sediment transport. The characteristics of these flows have previously been studied with the use of fixed beds, due to the difficulties in measuring over naturally variable and mobile beds, and interpreting the results of such measurements. This thesis presents the results of an investigation into flows over naturally-mobile fluvial bedforms in laboratory flumes, with the results interpreted in the context of the double averaging framework. To measure flows over developing beds (from planar sand beds to a bedform configuration in equilibrium with the flow), a novel 'flying-probe' system was devised and used, with acoustic Doppler velocimeter (ADV) and depth-sounding probes mounted on a carriage that regularly traversed lengths of multiple bedforms. To measure flows over equilibrium configuration beds, the arrays of probes were held stationary above migrating bedforms, sampling throughout the passage of multiple bedforms. Measurements of velocity fields over fixed two-dimensional dune beds were used to confirm the validity of the flying-probe measurement strategy and to explore data analysis techniques such as double averaging. The results obtained provide a dataset for comparison with previous studies of flow over fixed bedforms and with the subsequent measurements of flow over mobile-bed bedforms. In flows over the fixed bed, spatial fields of turbulent kinetic energy, velocity skewness, velocity kurtosis, and Reynolds stress all reveal a region of heightened turbulence along the shear layer and wake zone in the lee of the dunes, in line with existing literature. Double-averaged vertical profiles of these characteristics show similar patterns to previous research over planar beds. The normalised, averaged flow field is shown to be similar for the present flows of different relative bed roughness. The novel velocity measurements over developing mobile beds (from plane-bed to ripples, dunes, and ripples transitioning to dunes) provide insight into the changing flow fields as beds develop. The flow parameters investigated, including double-averaged velocity, variance, skewness and kurtosis of velocity fluctuations, and fluid stresses, generally reached equilibrium values more quickly than bed parameters. Normalised double-averaged velocity was seen to decrease with bedform growth, which is consistent with expectations based on conventional rough-wall velocity distributions. Variances of velocity fluctuations were seen to increase during bed development, while normalised variances, termed fluctuation intensities', appeared to reduce during bed development, increasing again at later stages of development. The spatial variations in flow parameters measured over migrating equilibrium-sized dune beds match expectations arising from the fixed-bed experiments. They also match the conventional models of flow over dunes, with heightened turbulence (e.g. turbulence intensities, Reynolds stress, form-induced stress, turbulent length scales and energy dissipation rates) measured in the separation cell, the shear layer and the wake zone that form behind dune crests. Profiles of double-averaged velocity, turbulence intensity, velocity skewness and kurtosis, and fluid stresses are consistent with the results for fixed bedforms. Turbulent length scales were found to increase with distance above the bed, while energy dissipation rates were found to increase toward the bed. The present study reveals that flows over naturally-mobile fluvial bedforms can be explained by reasoned extension of previous studies of rough-bed flows and flows over fixed bed dunes.
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BARDINI, LAURA. "Impact of hyporheic zones on nutrient dynamics." Doctoral thesis, Politecnico di Torino, 2013. http://hdl.handle.net/11583/2507376.

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Riverine sediments play a fundamental role within the fluvial system, since they represent potential removal zones of stream-borne pollutants and, in particular, nutrients derived by anthropogenic activities. The region of sediments where the exchange and mixing of surface and subsurface waters occurs is the hyporheic zone. This region is also a place of intense biogeochemical activity, influencing both the flora and the fauna living in the fluvial environment. In the last decades several works were focused either on the water exchanges or the biochemical reactions in the hyporheic zone but just few considered the interactions of both hydraulic and biochemical processes. In this thesis the reactive transport of oxygen and the most common water-borne nutrients (i.e., dissolved organic carbon, nitrate and ammonium) in a duned streambed is investigated. In particular, a numerical model is employed to simulate the flow field, the biogeochemical reactions and the solute spatial distribution in the hyporheic zone. Sensitivity analyses are also performed to study the influence of different hydrological and chemical properties of the system on the net solute fluxes across the streambed. Finally, the effect of sediment heterogeneity on substance reaction rates and, specifically, on nitrate source/sink role played by the sediments is also analyzed for a rippled streambed.
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Piedra-Cueva, Jose Carlos Ismael. "Contribution à l'étude des mécanismes de transport des sédiments cohésifs." Université Joseph Fourier (Grenoble), 1996. http://www.theses.fr/1996GRE10200.

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Deux processus de transport des sediments fins sont etudies: i) l'erosion d'un lit depose de vase et le transport en suspension par un courant, ii) le transport lagrangien de vase induit par l'action de la houle dans une couche de vase fluide. I) une etude experimentale de l'erosion d'un lit depose de vase par un courant est realisee dans le canal sedimentologique a circulation du laboratoire d'hydraulique de france. Cette etude est precedee d'une etude hydrodynamique qui precise les conditions pour lesquelles le courant applique un frottement quasiment uniforme sur toute la surface du lit et produit une erosion reguliere du lit. Une analyse theorique montre que les effets de stratification du sediment en suspension sont negligeables lorsque la concentration moyenne sur la verticale est inferieure a 5 g/l. Les variations temporelles de la concentration de sediment en suspension permettent de mesurer l'erosion du lit. Les resultats experimentaux mettent en evidence une loi d'erosion adimensionnelle ou le taux d'erosion varie lineairement avec la difference entre le frottement exerce sur le fond par le courant et la rigidite du lit a sa surface. La dependance du coefficient de proportionnalite avec le nombre de richardson et le gradient de rigidite a la surface du lit est etudiee. Les experiences montrent que l'erosion du lit diminue significativement lorsque le gradient de rigidite a la surface du lit augmente. Ii) le transport lagrangien de vase induit par l'action de la houle dans une couche de vase fluide est etudie theoriquement dans un systeme visqueux a deux couches a partir des equations du mouvement ecrites en coordonnees de lagrange. La comparaison des resultats avec les mesures de sakakiyama & bijker (1989) montre un bon niveau de concordance
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Chapuis, Margot. "Mobilité des sédiments fluviaux grossiers dans les systèmes fortement anthropisés : éléments pour la gestion de la basse vallée de la Durance." Thesis, Aix-Marseille, 2012. http://www.theses.fr/2012AIXM3019/document.

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La Durance est une large rivière méditerranéenne à charge grossière et à lit divagant. Le fonctionnement hydro-sédimentaire de son bassin versant a été profondément modifié par la mise en place d'aménagements hydro-électriques et par les extractions de graviers, qui ont entraîné une rétraction de sa bande active et une incision marquée de son lit. Ces évolutions morphologiques correspondent à des enjeux majeurs en termes de gestion du territoire en moyenne et basse Durance, du fait de la nécessité du maintien d'une capacité d'écoulement du lit en crue, et de la mobilité latérale du lit, souvent incompatible avec l'occupation de la vallée. Cette thèse, basée sur la collecte de données de terrain, vise à développer un schéma de fonctionnement du transport sédimentaire dans les rivières à charge grossière de grande largeur, en intégrant les différentes échelles spatiales (et donc temporelles). Elle a également pour objectif de donner des clefs de compréhension pour la gestion des flux sédimentaires en Durance. Les mécanismes de la mobilité des particules sédimentaires et des formes fluviales sont étudiés dans une démarche ascendante de reformulation scientifique de questionnements opérationnels
The Durance River (South-Eastern France) is a large and steep wandering gravel-bed river, deeply impacted by gravel mining and flow diversion in its whole catchment area. The Durance River is characterized by a sediment deficit that led to a reduction of active channel width and river bed degradation. These lateral and vertical dynamics lead to important issues in terms of landscape management, because of (i) maintaining the bed hydraulic capacity to evacuate flood discharges and (ii) planform evolution of the river that conflicts with landscape use. This field-based thesis aims at developing a functioning scheme of bedload transport in large gravel bed rivers at various spatial (and consequently temporal) scales and gives keys to understanding for sediment fluxes management on the Durance River. Particle and bedform mobility mechanisms are studied with a scientific approach closely linked to management issues
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"Field and Flume Investigations of Bedload Transport and Bedforms in Sand-Bedded Rivers." Doctoral diss., 2018. http://hdl.handle.net/2286/R.I.50429.

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abstract: Worldwide, rivers and streams make up dense, interconnected conveyor belts of sediment– removing carved away earth and transporting it downstream. The propensity of alluvial river beds to self-organize into complex trains of bedforms (i.e. ripples and dunes) suggests that the associated fluid and sediment dynamics over individual bedforms are an integral component of bedload transport (sediment rolled or bounced along the river bed) over larger scales. Generally speaking, asymmetric bedforms (such as alluvial ripples and dunes) migrate downstream via erosion on the stoss side of the bedform and deposition on the lee side of the bedform. Thus, the migration of bedforms is intrinsically linked to the downstream flux of bedload sediment. Accurate quantification of bedload transport is important for the management of waters, civil engineering, and river restoration efforts. Although important, accurate qualification of bedload transport is a difficult task that continues t elude researchers. This dissertation focuses on improving our understanding and quantification of bedload transport on the two spatial scales: the bedform scale and the reach (~100m) scale. Despite a breadth of work investigating the spatiotemporal details of fluid dynamics over bedforms and bedload transport dynamics over flat beds, there remains a relative dearth of investigations into the spatiotemporal details of bedload transport over bedforms and on a sub-bedform scale. To address this, we conducted two sets of flume experiments focused on the two fundamental regions of flow associated with bedforms: flow separation/reattachment on the lee side of the bedform (Chapter 1; backward facing-step) and flow reacceleration up the stoss side of the next bedform (Chapter 2; two-dimensional bedform). Using Laser and Acoustic Doppler Velocimetry to record fluid turbulent events and manual particle tracking of high-speed imagery to record bedload transport dynamics, we identified the existence and importance of “permeable splat events” in the region proximal to flow reattachment. These coupled turbulent and sediment transport events are integral to the spatiotemporal pattern of bedload transport over bedforms. Splat events are localized, high magnitude, intermittent flow features in which fluid impinges on the bed, infiltrates the top portion of bed, and then exfiltrates in all directions surrounding the point of impingement. This initiates bedload transport in a radial pattern. These turbulent structures are primarily associated with quadrant 1 and 4 turbulent structures (i.e. instantaneous fluid fluctuations in the streamwise direction that bring fluid down into the bed in the case of quadrant 1 events, or up away from the bed in the case of quadrant 4 events) and generate a distinct pattern of bedload transport compared to transport dynamics distal to flow reattachment. Distal to flow reattachment, bedload transport is characterized by relatively unidirectional transport. The dynamics of splat events, specifically their potential for inducing significant magnitudes of cross-stream transport, has important implications for the evolution of bedforms from simple, two dimensional features to complex, three-dimensional features. New advancements in sonar technology have enabled more detailed quantification of bedload transport on the reach scale, a process paramount to the effective management of rivers with sand or gravel-dominated bed material. However, a practical and scalable field methodology for reliably estimating bedload remains elusive. A popular approach involves calculating transport from the geometry and celerity of migrating bedforms, extracted from time-series of bed elevation profiles (BEPs) acquired using echosounders. Using two sets of repeat multibeam sonar surveys from the Diamond Creek USGS gage station in Grand Canyon National Park with large spatio-temporal resolution and coverage, we compute bedload using three field techniques for acquiring BEPs: repeat multi-, single-, and multiple single-beam sonar. Significant differences in flux arise between repeat multibeam and single beam sonar. Mulitbeam and multiple single beam sonar systems can potentially yield comparable results, but the latter relies on knowledge of bedform geometries and flow that collectively inform optimal beam spacing and sampling rate. These results serve to guide design of optimal sampling, and for comparing transport estimates from different sonar configurations.
Dissertation/Thesis
Doctoral Dissertation Geological Sciences 2018
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Book chapters on the topic "Fluvial bedforms"

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Ferraro, Domenico, and Subhasish Dey. "Principles of Mechanics of Bedforms." In Rivers – Physical, Fluvial and Environmental Processes, 79–98. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-17719-9_3.

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Mahesh Patel, Sainath Panigrahi, and Bimlesh Kumar. "Flow over Fluvial Bedforms with Suction." In Fluid Mechanics and Fluid Power – Contemporary Research, 1069–77. New Delhi: Springer India, 2016. http://dx.doi.org/10.1007/978-81-322-2743-4_101.

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Fernández-Remolar, David C., David Gómez-Ortíz, Olga Prieto-Ballesteros, Felipe Gómez, and Ricardo Amils. "Fluvial Bedform Generation by Biofilm Activity in the Berrocal Segment of Río Tinto: Acidic Biofilms and Sedimentation." In Cellular Origin, Life in Extreme Habitats and Astrobiology, 483–98. Dordrecht: Springer Netherlands, 2010. http://dx.doi.org/10.1007/978-90-481-3799-2_25.

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LOVE, DAVID W., ALLAN GUTJAHR, and SYLVEEN ROBINSON-COOK. "LOCATION-DEPENDENT SEDIMENT SORTING IN BEDFORMS UNDER WANING FLOW IN THE RIO GRANDE, CENTRAL NEW MEXICO." In Recent Developments in Fluvial Sedimentology, 37–47. SEPM (Society for Sedimentary Geology), 1987. http://dx.doi.org/10.2110/pec.87.39.0037.

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Conference papers on the topic "Fluvial bedforms"

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"Dynamics of bedforms and meandering streams." In The International Conference On Fluvial Hydraulics (River Flow 2016). Taylor & Francis Group, 6000 Broken Sound Parkway NW, Suite 300, Boca Raton, FL 33487-2742: CRC Press, 2016. http://dx.doi.org/10.1201/9781315644479-171.

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Unsworth, C., A. Nicholas, P. Ashworth, C. Simpson, J. Best, S. Lane, D. Parsons, and G. Sambrook. "Using bedform migration and orientation to infer sediment transport pathways in a sandy braided river." In The International Conference On Fluvial Hydraulics (River Flow 2016). Taylor & Francis Group, 6000 Broken Sound Parkway NW, Suite 300, Boca Raton, FL 33487-2742: CRC Press, 2016. http://dx.doi.org/10.1201/9781315644479-180.

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Bristow, N., G. Blois, Z. Tang, J. Barros, J. Best, and K. Christensen. "Measurements of flow dynamics associated with interacting, subaqueous barchans: Exploring bedform asymmetry and threedimensionality in a novel flume environment." In The International Conference On Fluvial Hydraulics (River Flow 2016). Taylor & Francis Group, 6000 Broken Sound Parkway NW, Suite 300, Boca Raton, FL 33487-2742: CRC Press, 2016. http://dx.doi.org/10.1201/9781315644479-72.

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Elliott, Caroline, and Robert Jacobson. "Measurement of bedform migration rates on the Lower Missouri River in Missouri, USA using repeat measurements with a multibeam echosounder." In The International Conference On Fluvial Hydraulics (River Flow 2016). Taylor & Francis Group, 6000 Broken Sound Parkway NW, Suite 300, Boca Raton, FL 33487-2742: CRC Press, 2016. http://dx.doi.org/10.1201/9781315644479-241.

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Mahon, Robert C., Suleyman Naqshband, and Brandon McElroy. "2D MODEL FOR FLUVIAL BEDFORM MORPHODYNAMICS: THEORY AND EMPIRICAL EVALUATION USING PROFILING ACOUSTIC DOPPLER VELOCIMETERS." In GSA Annual Meeting in Denver, Colorado, USA - 2016. Geological Society of America, 2016. http://dx.doi.org/10.1130/abs/2016am-287218.

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Mahon, Robert C., Vamsi Ganti, Brandon McElroy, and John Shaw. "RECONSTRUCTING PAST FLUVIAL FLOW AND SEDIMENT TRANSPORT CONDITIONS FROM THE GEOMETRY OF BEDFORM CROSS SETS IN THE STRATIGRAPHIC RECORD." In 68th Annual Rocky Mountain GSA Section Meeting. Geological Society of America, 2016. http://dx.doi.org/10.1130/abs/2016rm-276199.

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