Tracking fluorescent and ferrimagnetic sediment tracers on an energetic ebb-tidal delta to monitor grain size-selective dispersal

Pearson, Stuart; Prooijen, Bram C. van; Poleykett, Jack; Wright, Matthew; Black, K. S.; Wang, Zheng Bing

doi:10.1016/j.ocecoaman.2021.105835

Cited by 9 publications

(7 citation statements)

References 56 publications

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“…Furthermore, in-situ sediment flux measurements require large numbers of state-of-the-art acoustic instruments [e.g Zedel et al] deployed for long periods of time to provide robust information from which to derive a sediment budget. Information gathered with sediment tracers might provide complimentary data [Pearson et al, 2021], especially if co-collected with hydrodynamic data and complimented by numerical modelling.…”

Section: Conclusion and Future Perspectivesmentioning

confidence: 99%

Morphodynamics of wave-dominated beaches

Castelle

Masselink

2022

Camb. prisms Coast. futures

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Sandy beach morphology exhibits a large variability in space and time. Closely associated with such morphological variability are changes in the surf zone processes, such as type of wave breaking, wave energy gradients, strength and character of nearshore currents, and modes of sediment transport. The beach model morphodynamic framework of [1] captures this mutual feedback between morphological and hydrodynamic variability, and describes the occurrence of beach types across the complete reflective-dissipative spectrum. In this review, we provide this framework with a stronger physical underpinning by drawing on the results of several decades of coastal research, whilst also highlighting existing gaps in our knowledge and providing future perspectives. This review will provide physical coastal researchers with an enhanced morphodynamic framework within which to place their beach research and interpret their results, as well as providing them with suggestions for future research.

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Section: Conclusion and Future Perspectivesmentioning

confidence: 99%

Morphodynamics of wave-dominated beaches

Castelle

Masselink

2022

Camb. prisms Coast. futures

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“…Pantin, 1961; Crickmore, 1976; Miller & Komar, 1979; Black et al ., 2007). Sediment tracer studies provide valuable insights into sediment transport dynamics, improving the knowledge of sediment circulation, enabling effective planning, and monitoring of sand nourishments, assessment of connectivity between potential sediment sources and sinks, or proper dimensioning of structures for coastal protection (Silva et al ., 2007; Bosnic et al ., 2017; Pearson et al ., 2021). The technique relies upon the injection of natural or artificial particle tracers into a studied area and their subsequent recovery and analysis in the laboratory or, alternatively, their in situ determination.…”

Section: Introductionmentioning

confidence: 99%

“…The technique relies upon the injection of natural or artificial particle tracers into a studied area and their subsequent recovery and analysis in the laboratory or, alternatively, their in situ determination. In coastal environments, the use of sediment tracers has proved to be a reliable technique for the study of sediment transport, both in terms of a Eulerian approach determining net transport rates, and a Lagrangian approach tracking sediment particles (Silva et al ., 2007; Bosnic et al ., 2017; Wilson, 2018; Pearson et al ., 2021). Over the past three decades, various alternative methodologies for measuring sediment transport have emerged.…”

Section: Introductionmentioning

confidence: 99%

“…A number of studies use magnetic particles for tracking sediment transport (Gallaway et al ., 2012; Pearson et al ., 2021). There are three main types of magnetic materials: (i) diamagnetic (for example, quartz and calcite); (ii) paramagnetic (for example, phyllosilicates); and (iii) ferromagnetic (for example, iron oxides like magnetite, hematite and goethite) particles.…”

Section: Introductionmentioning

confidence: 99%

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Testing magnetic tracers as indicators of sediment transport in a wave flume experiment

Romão,

Cascalho,

Ferreira

et al. 2024

Sedimentology

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The in situ measurement of sediment transport in wave‐dominated environments presents significant challenges and currently often relies upon the use of fluorescent sediment tracers. However, this method is constrained by challenges in conducting unbiased and representative sampling, as well as facing overall logistical complexities and labour‐intensive procedures. Whilst other tracer techniques are available, such as using magnetic tracers, their performance in tracking sediment transport has not been quantified. The objective of this study is to assess the effectiveness of magnetic tracers in evaluating net transport rates and tracer dispersal patterns. Conducted in a controlled large wave flume, the experiments simultaneously employed fluorescent and magnetic tracers, allowing a comprehensive comparison of the tracers' dispersion patterns and the net transport rates. Results show that the dispersal of magnetic and fluorescent tracers displays a high degree of spatial coherence in both horizontal and vertical dimensions. Similarly, net transport rates are comparable (<16% difference), both showing net transport in the direction of the wave propagation (towards onshore) driven by non‐linear and streaming effects. Magnetic tracer recovery rate (49%) was lower than for fluorescent tracers (73%) and is attributed to the loss of magnetic ink from particles; an aspect of the magnetic technique that requires improvement. This study therefore indicates that the use of magnetic tracers to quantify sediment transport is an effective method with the advantages of being significantly less labour‐intensive than using the commonly applied fluorescent sediment tracer method.

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“…novel method inspired byPearson et al (2021) was developed to count colored sediment in the surface samples automatically. All 59 collected surface samples were scanned under a Keyence VHX-5000 digital microscope (Keyence Corporation, 2014).…”

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confidence: 99%

Coastal aeolian sediment transport in an active bed surface layer: Tracer study and conceptual model

Uphues

IJzendoorn

Hallin

et al. 2022

Earth Surf Processes Landf

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Coastal aeolian sediment transport is influenced by supply-limiting factors caused by sediment sorting by grain size. Sorting processes can lead to coarsening of the bed surface and influence the formation of aeolian ripples. However, the influence sorting processes and bedforms might have on the magnitude of the transport is not fully understood. This study explores sorting processes and their influence on the magnitude and mode of aeolian transport by using sediment tracers. Sand was painted in different colors according to particle size and placed on a supratidal beach in Noordwijk, the Netherlands. Several experiments were conducted with varying wind

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Tracking fluorescent and ferrimagnetic sediment tracers on an energetic ebb-tidal delta to monitor grain size-selective dispersal

Cited by 9 publications

References 56 publications

Morphodynamics of wave-dominated beaches

Morphodynamics of wave-dominated beaches

Testing magnetic tracers as indicators of sediment transport in a wave flume experiment

Coastal aeolian sediment transport in an active bed surface layer: Tracer study and conceptual model

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