A field study of the surface disturbance effects of animals and motor vehicles on aeolian sediment emission from a silty playa surface

Moayeri, Vahid; Miri, Abbas; Shahriari, Ali; Rahdari, Vahid; Gill, Thomas E.

doi:10.1016/j.envres.2022.114606

Cited by 6 publications

(3 citation statements)

References 63 publications

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“…(2022)) or coupling with a numerical model (Reniers et al., 2013; Srisuwan & Work, 2015). Trampling is also expected to affect the grain size at the bed surface (Moayeri et al., 2023; Reyes‐Martínez et al., 2015). Its effects could be included in aeolian sediment transport models with mixing of surface layers in locations where human activity is expected.…”

Section: Discussionmentioning

confidence: 99%

“…Future work could investigate the effect of temporally varying grain sizes due to hydrodynamic processes on the sediment flux by including temporal grain-size variations in modeling simulations by making simplified assumptions (e.g., based on findings by van IJzendoorn et al ( 2022)) or coupling with a numerical model (Reniers et al, 2013;Srisuwan & Work, 2015). Trampling is also expected to affect the grain size at the bed surface (Moayeri et al, 2023;Reyes-Martínez et al, 2015). Its effects could be included in aeolian sediment transport models with mixing of surface layers in locations where human activity is expected.…”

Section: Using a Single-fraction Representative Grain Size In Aeolian...mentioning

confidence: 99%

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Modeling Multi‐Fraction Coastal Aeolian Sediment Transport With Horizontal and Vertical Grain‐Size Variability

et al. 2023

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Sediment available for aeolian transport in coastal settings is characterized by a grain-size distribution that is typically described with a range of grain-size fractions (Krumbein, 1934). Grain size affects aeolian sediment transport due to the larger drag and lift force that is necessary to displace coarser grains (Durán et al., 2011;Sarre, 1987). Grain size also alters the creep and saltation trajectory of sediment (e.g., Cheng et al., 2015;Zhang et al., 2021). Therefore, different grain-size fractions lead to different rates of sediment transport.Field measurements on beaches have shown considerable spatial variations in grain size in the alongshore (Hallin,

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Section: Discussionmentioning

confidence: 99%

Section: Using a Single-fraction Representative Grain Size In Aeolian...mentioning

confidence: 99%

Modeling Multi‐Fraction Coastal Aeolian Sediment Transport With Horizontal and Vertical Grain‐Size Variability

et al. 2023

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“…based on findings by van IJzendoorn et al, 2022) or coupling with a numerical model (Reniers et al, 2013;Srisuwan & Work, 2015). Trampling is also expected to affect the grain size at the bed surface (Moayeri et al, 2023;Reyes-Martínez et al, 2015). Its effects could be included in aeolian sediment transport models with mixing of surface layers in locations where human activity is expected.…”

Section: Simulationmentioning

confidence: 99%

Modeling multi-fraction coastal aeolian sediment transport with horizontal and vertical grain size variability

IJzendoorn

Hallin

Reniers

et al. 2023

Preprint

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Grain size affects the rates of aeolian sediment transport on beaches. Sediment in coastal environments typically consists of multiple grain size fractions and exhibits spatiotemporal variations. Still, conceptual and numerical aeolian transport models are simplified and often only include a single fraction that is constant over the model domain. It is unclear to what extent this simplification is valid and if the inclusion of multi-fraction transport and spatial grain size variations affects aeolian sediment transport simulations and predictions of coastal dune development. This study applies the numerical aeolian sediment transport model AeoLiS to compare single-fraction to multi-fraction approaches for a range of grain size distributions and spatial grain size scenarios. The results show that on timescales of days to years, single-fraction simulations with the median grain size, D50, often give similar results to multi-fraction simulations provided the wind is able to mobilize all fractions within that time frame. On these timescales, vertical variability in grain size has a limited effect on total transport rates, but it does influence the simulation results on minute timescales. Horizontal grain size variability influences both the total transport rates and the downwind bed grain size composition. The results provide new insights into the influence of beach sediment composition and spatial variability on total transport rates towards the dunes. The findings of this study can guide the implementation of grain size variability in numerical aeolian sediment transport models.

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Aeolian Anthropocene

Goudie

2023

Landscapes of the Anthropocene With Google Earth

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A field study of the surface disturbance effects of animals and motor vehicles on aeolian sediment emission from a silty playa surface

Cited by 6 publications

References 63 publications

Modeling Multi‐Fraction Coastal Aeolian Sediment Transport With Horizontal and Vertical Grain‐Size Variability

Modeling Multi‐Fraction Coastal Aeolian Sediment Transport With Horizontal and Vertical Grain‐Size Variability

Modeling multi-fraction coastal aeolian sediment transport with horizontal and vertical grain size variability

Aeolian Anthropocene

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