Transport and dispersion of fluorescent tracer particles for the flat-bed condition, Rio Grande conveyance channel, near Bernardo, New Mexico

Rathburn, R.E.; Kennedy, Vance C.; Culbertson, James K.

doi:10.3133/pp562i

Cited by 8 publications

(14 citation statements)

References 12 publications

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“…In the present study, fluorescent tracer techniques originally employed in fluvial environments (e.g. Crickmore and Lean, 1962;Crickmore, 1967;Rathburn et al, 1971) provide empirical documentation of eolian sand transport rates.…”

Section: Field Studiesmentioning

confidence: 99%

“…Similarly, under higher energy conditions, the longer distances between the leeward collection rows allowed for detection of rapid tracer movement. An early use of the grid technique in an eolian tracer experiment is exemplified by the work of Ingle (1964). At four times after introduction of the tracer sand, samples were collected downwind of the origin to determine movement of the centroid of tracer particles.…”

Section: Tracer Sandsmentioning

confidence: 99%

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Field evaluation of some sand transport models

Berg

1983

Earth Surf Processes Landf

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Fluorescent tracer procedures, originally developed for research on fluvial sediment movement, were used to monitor the movement of three commercially purchased sands in a natural dune environment. Results were compared with estimates of transport rates from three theoretical models. Estimates from models by Bagnold (1941) and Hsu (1971) were larger by as much as one order of magnitude than the rates observed in the tracer study. The model of A. A. Kadib (1965) provided closer correspondence to observed transport rates for medium sand (mean diam. 0.653 mm) but underestimated rates for coarse sand (mean diam. 0.992 mm).

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Section: Field Studiesmentioning

confidence: 99%

Section: Tracer Sandsmentioning

confidence: 99%

Field evaluation of some sand transport models

Berg

1983

Earth Surf Processes Landf

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“…Under dynamic equilibrium conditions, the active layer model predicts tracer sediment to be advected downstream at a mean speed inversely proportional to the active layer thickness without dispersing (Iwasaki et al, 2017). However, traced sediment particles are observed to disperse as they move downstream both in the field (e.g., Bradley & Tucker, 2012;Bradley, 2017;Drake et al, 1988;Hassan et al, 1991;Nikora et al, 2002;Rathbun et al, 1971;Sayre & Hubbell, 1965) and in the laboratory (e.g., Hill et al, 2010;Martin et al, 2012;Roseberry et al, 2012). The active layer model is presented in two forms (Parker et al, 2000): (1) the flux form, in which the sediment transport rate is computed and changes in bed elevation and bed surface texture depend on the gradient of the sediment transport rate, and (2) in entrainment-deposition form, in which the rates at which sediment is entrained and deposited are computed and changes occur due their difference.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Well‐Posed Alternative to the Hirano Active Layer Model for Rivers With Mixed‐Size Sediment

2019

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The active layer model (Hirano, 1971) is frequently used for modeling mixed‐size sediment river morphodynamic processes. It assumes that all the dynamics of the bed surface are captured by a homogeneous top layer that interacts with the flow. Although successful in reproducing a wide range of phenomena, it has two problems: (1) It may become mathematically ill‐posed, which causes the model to lose its predictive capabilities, and (2) it does not capture dispersion of tracer sediment. We extend the active layer model by accounting for conservation of the sediment in transport and obtain a new model that overcomes the two problems. We analytically assess the model properties and discover an instability mechanism associated with the formation of waves under conditions in which the active layer model is ill‐posed. Numerical simulations using the new model show that it is capable of reproducing two laboratory experiments conducted under conditions in which the active layer model is ill‐posed. The new model captures the formation of waves and mixing due to an increase in active layer thickness. Simulations of tracer dispersion show that the model reproduces reasonably well a laboratory experiment under conditions in which the effect of temporary burial of sediment due to bedforms is negligible. Simulations of a field experiment illustrate that the model does not capture the effect of temporary burial of sediment by bedforms.

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“…Tracing the movement of fine particulate matter in the environment is difficult, and several techniques have been attempted with varying degrees of success. These include sand labeled with radioactive isotopes (), fluorescent sand ( − ), Lycopodium spores (), Baker's yeast (), fluorescent plastic (), lanthanide oxides (), luminophores (), plastic microtaggants (), glass beads (), gold/silver doping ( − ), carboxylate-modified polystyrene latex (), lanthanide-labeled clay (), DNA-labeled clay (), and clay labeled with radioactive 134 Cs () and 137 Cs (). However, many of these techniques use artificial particles or particles that have different physical characteristics from the natural materials that are to be traced.…”

Section: Introductionmentioning

confidence: 99%

Transport of Rare Earth Element-Tagged Soil Particles in Response to Thunderstorm Runoff

Matisoff

Ketterer

Wilson

et al. 2001

Environ. Sci. Technol.

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The downslope transport of rare earth element-tagged soil particles remobilized during a spring thunderstorm was studied on both a natural prairie and an agricultural field in southwestern Iowa (U.S.A.). A technique was developed for tagging natural soils with the rare earth elements Eu, Tb, and Ho to approximately 1,000 ppm via coprecipitation with MnO2. Tagged material was replaced in target locations; surficial soil samples were collected following precipitation and runoff; and rare earth element concentrations were determined by inductively coupled plasma mass spectrometry. Diffusion and exponential models were applied to the concentration-distance data to determine particle transport distances. The results indicate that the concentration-distance data are well described by the diffusion model, butthe exponential model does not simulate the rapid drop-off in concentrations near the tagged source. Using the diffusion model, calculated particle transport distances at all hillside locations and at both the cultivated and natural prairie sites were short, ranging from 3 to 73 cm during this single runoff event. This study successfully demonstrates a new tool for studying soil erosion.

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Transport and dispersion of fluorescent tracer particles for the flat-bed condition, Rio Grande conveyance channel, near Bernardo, New Mexico

Cited by 8 publications

References 12 publications

Field evaluation of some sand transport models

Field evaluation of some sand transport models

A Well‐Posed Alternative to the Hirano Active Layer Model for Rivers With Mixed‐Size Sediment

Transport of Rare Earth Element-Tagged Soil Particles in Response to Thunderstorm Runoff

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