Source‐To‐Sink Aeolian Fluxes From Arid Landscape Dynamics in the Lut Desert

Chanteloube, Colin; Barrier, Laurie; Derakhshani, Reza; Gadal, Cyril; Braucher, Régis; Payet, Vincent; Léanni, Laëtitia; Narteau, C.

doi:10.1029/2021gl097342

Cited by 12 publications

(12 citation statements)

References 128 publications

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“…Note that the flux calculation is for the saturated flux. The true flux may be smaller (due to precipitation or erodible surface fraction) or larger (due to dune steepness), but this is a reasonable estimate with precedents in other studies [18][19][20][21] . FP and RFP of sand flux have been used to quantify dune activities [18][19][20][21] .…”

supporting

confidence: 72%

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Site selection of desert solar farms based on heterogeneous sand flux

Li,

Tan,

Yang

et al. 2024

Preprint

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Site selection is a priority for building wind and solar farms in deserts, which has to consider the dune threats associated with sand flux, such as dust contamination and sand burial. Thus, understanding changes in sand flux can optimize the site selection for wind and solar farms in deserts. Here, we use the ERA5-Land hourly wind data with 0.1°×0.1° resolution to calculate the yearly sand flux for the period 1950–2021, and adopt the mean of sand flux to score the suitability of global deserts for wind and solar farms. We find that global deserts are dominated by low flux potential (≤20 m2 yr-1) and resultant flux potential (≤1.0 m2 yr-1) over the past 72 years, and the scoring result indicates that most deserts have low suitability for building wind farms, and high suitability for building solar farms. Our study optimizes the site selection for wind and solar farms in deserts, and contributes to achieving the affordable and clean energy target by 2030 under the framework of the United Nations sustainability development goals.

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supporting

confidence: 72%

“…Dune threats are associated with sand flux, and sand flux driven by effective shear velocities reflects the potential sediment transport capacity of the wind [17][18][19][20][21][22][23][24] . Sand flux in this study can be briefly quantified through the flux potential (FP) and resultant flux potential (RFP).…”

mentioning

confidence: 99%

Site selection of desert solar farms based on heterogeneous sand flux

Li,

Tan,

Yang

et al. 2024

Preprint

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“…Dunes record information about the environmental flows in which they formed and represent powerful (paleo‐)environmental proxies on Earth and other planetary bodies (Chanteloube et al., 2022; Ewing et al., 2010; Fenton & Hayward, 2010; Lapôtre et al., 2016, 2021; Lorenz & Zimbelman, 2014). However, given the variety of boundary and initial conditions to be considered, a major question has been to assess the relative contribution of current and past wind regimes to the diversity of dune size, shape and orientation (Ewing & Kocurek, 2010; Kocurek & Ewing, 2005; Lapôtre et al., 2018; Parteli et al., 2009; Telfer et al., 2018).…”

Section: Introductionmentioning

confidence: 99%

Coexistence of Two Dune Growth Mechanisms in a Landscape‐Scale Experiment

Lü

Narteau

Dong

et al. 2022

Geophysical Research Letters

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In landscape‐scale experiments at the edge of the Gobi desert, we show that various dune types develop simultaneously under natural wind conditions. Using 4 years of high‐resolution topographic data, we demonstrate that, depending on sand availability, the same wind regime can lead to two different dune orientations, which reflect two independent dune growth mechanisms. As periodic oblique dunes emerge from a sand bed and develop to 2 m in height, we analyze defect dynamics that drive the non‐linear phase of pattern coarsening. Starting from conical sand heaps deposited on gravels, we observe the transition from dome to barchan and asymmetric barchan shapes. We identify a minimum size for arm elongation and evaluate the contribution of wind reversals to its longitudinal alignment. These experimental field observations support existing theoretical models of dune dynamics boosting confidence in their applicability for quantitative predictions of dune evolution under various wind regimes and bed conditions.

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“…Neither consider the total amount of sediment and the rate it is distributed. There have been few theoretical and observational studies that consider these (Kocurek & Havholm, 1993;Wilson, 1971;Chanteloube et al, 2022;Gunn et al, 2020), but none that measure both.…”

Section: Introductionmentioning

confidence: 99%

Formation and reorganization timescales of aeolian landscapes

Gunn¹

2023

Preprint

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Landscapes created through sediment transport are shaped by the interaction of flow and form. In landscapes where wind is the agent of geomorphic work, this is clear at the small-scale; equilibrium landform morphology is linked to the wind climate and the supply of sediment. At larger scales, this linkage becomes ambiguous because the form of giant dunes and dune fields integrate long histories of varied wind and sand supply. Without a framework to assess aeolian landscape evolution at this scale, the time taken to form and reorganize these landscapes has been largely unexplored quantitatively. We show that these timescales can be understood by linking modern wind and topographic datasets for one of the most expansive and morphologically diverse dune fields, the Rub’ al Khali. By linking sediment flux to the surface area and slope of the mobile landscape, and growth to the divergence in that flux, we fully couple form and flow at the aeolian landscape-scale. Our results show quantitatively how wind-blown landscape formation and reorganization is outpaced by climate change, the scale below-which the landscape can equilibrate with climate, and the implications for stratigraphic interpretation.

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Source‐To‐Sink Aeolian Fluxes From Arid Landscape Dynamics in the Lut Desert

Abstract: An accurate quantification of aeolian sediment fluxes is crucial to improve our current understanding of the Earth system dynamics and manage the societal impact of sand transport and dust emissions (

Cited by 12 publications

References 128 publications

Site selection of desert solar farms based on heterogeneous sand flux

Site selection of desert solar farms based on heterogeneous sand flux

Coexistence of Two Dune Growth Mechanisms in a Landscape‐Scale Experiment

Formation and reorganization timescales of aeolian landscapes

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