Article
Geography, Physical
John Dickey, Meagan Wengrove, Nicholas Cohn, Peter Ruggiero, Sally D. Hacker
Summary: Wind flow over coastal foredunes adapts to vegetation, resulting in spatial gradients in bed shear stresses that contribute to the formation of localized bedforms. Understanding and predicting sediment distribution within sparsely vegetated dune complexes is critical for evaluating the benefits of dune management.
EARTH SURFACE PROCESSES AND LANDFORMS
(2023)
Article
Geography, Physical
Ian J. Walker, Zach Hilgendorf, John A. Gillies, Craig M. Turner, Eden Furtak-Cole, George Nikolich
Summary: The Oceano Dunes near Pismo Beach in California is a significant dune system that has faced issues of dust emissions due to vehicle activity. To address this, a nature-based foredune restoration strategy was implemented in 2020. After a 2-year study, it was found that all treatments resulted in net sediment accumulation, substantial development of nebkha dunes, and increased plant cover and species richness. Two treatments showed promising results for foredune development.
EARTH SURFACE PROCESSES AND LANDFORMS
(2023)
Article
Geosciences, Multidisciplinary
Mathieu G. A. Lapotre, Michael J. Malaska, Morgan L. Cable
Summary: Titan, Saturn's moon, has various sedimentary features including dunes, lakes, rivers, and plateaus. This study explores the mechanism of sand particle formation on Titan's equatorial dunes over long periods of time. The findings suggest that seasonal sediment transport, along with episodic abrasion and sintering by rivers and winds, can explain the formation and maintenance of sand grains on Titan.
GEOPHYSICAL RESEARCH LETTERS
(2022)
Article
Geography, Physical
Hanlin Jiang, Xiaohong Sun, Zhengyi Yao, Xiaoyang Wu, Xinyi Liu, Zhenshan Li
Summary: This study focused on the dunes around Cuona Lake on the Qinghai-Tibetan Plateau, revealing that dune formation is mainly controlled by alternating processes of wind and water. Sediment is transported from the lake beach by westerly winds in the winter and spring, while rivers flowing in the opposite direction in the summer transport sand back to the lake beach, resulting in sand recycling in the landscape.
Article
Environmental Sciences
L. R. Lokin, J. J. Warmink, S. J. M. H. Hulscher
Summary: River dunes, dynamic bedforms in the river bed, can limit navigable depths and increase bed roughness. Predicting the navigable depth and planning maintenance dredging can be done with a numerical dune development model. Different sediment transport models were used to study the effect on dune shape and propagation. The models were able to simulate dune propagation, with shear stress-based models reshaping the dunes. The models reproduced observed dune celerity and realistic dune shapes for low and median discharges.
WATER RESOURCES RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Olav J. M. van Duin, Suzanne J. M. H. Hulscher, Jan S. Ribberink
Summary: This paper introduces a new morphological model that increases the step length to make dunes smoother and eventually wash out with increasing flow. The model demonstrates that increasing discharge leads to higher step length and washing out of dunes.
APPLIED SCIENCES-BASEL
(2021)
Article
Geosciences, Multidisciplinary
Debsmita Das, Vamsi Ganti, Ryan Bradley, Jeremy Venditti, Arjan Reesink, Daniel R. Parsons
Summary: Fluvial cross strata are depositional products that record the formative flow and sediment transport conditions on planetary bodies. The study found that the evolution of bedforms and the thickness of preserved sets have a parabolic dependence on transport stage, with maximum values observed at intermediate transport stages. The results suggest that transport stage is a key control on the flow-depth-normalized set thickness.
GEOPHYSICAL RESEARCH LETTERS
(2022)
Article
Geosciences, Multidisciplinary
Colin Chanteloube, Laurie Barrier, Reza Derakhshani, Cyril Gadal, Regis Braucher, Vincent Payet, Laetitia Leanni, Clement Narteau
Summary: This study analyzes the major landforms of the Lut Desert in Iran to provide a comprehensive understanding of aeolian systems over different time scales. The findings show comparable sediment discharges from long-term erosion and deposition as well as short-term and medium-term sand discharges derived from wind data and dune morphodynamics. This study quantifies the geomorphic controls of aeolian processes and provides insight into mass exchanges between continents and the atmosphere.
GEOPHYSICAL RESEARCH LETTERS
(2022)
Article
Environmental Sciences
Daniel Wren, Roger Kuhnle, Tate McAlpin, David Abraham, Keaton Jones
Summary: Streams and rivers, especially smaller ones, often experience rapid changes in flow rate, leading to disequilibrium in sediment transport rates and bedforms. Flume experiments were conducted to study the response of bedforms to rapid flow changes, showing that relict bedforms stop moving and small bedforms form quickly. The changes in sediment transport rates align with previous predictions.
INTERNATIONAL JOURNAL OF SEDIMENT RESEARCH
(2022)
Article
Geochemistry & Geophysics
Kirby D. Runyon, Christina E. Viviano, Mackenzie Day
Summary: In aeolian-dominated conditions, widespread paleodunes on modern Mars with morphologies consistent with transverse dunes may have formed from wind-mobilized pyroclastics, eroded into hybrid paleobedform/protoyardangs under recent winds.
EARTH AND PLANETARY SCIENCE LETTERS
(2021)
Article
Engineering, Marine
Manuel Teixeira, Erik M. Horstman, Kathelijne M. Wijnberg
Summary: Understanding the dynamics of beach-dune systems is crucial for effective coastal management. The cellular automata model DuBeVeg provides a powerful tool for simulating and understanding the bio-geomorphological evolution of these systems, capturing key interactions of aeolian, hydro-, and vegetation dynamics in a simplified manner. The study compared two different representations of aeolian transport in DuBeVeg, finding that the saltation transport mode resulted in a more realistic simulation of foredune expansion and the appearance of aeolian bedforms on the beach. These findings emphasize the importance of selecting the representative transport mode when simulating the transient bio-geomorphological evolution of beach-dune systems.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Philipe Ratton, Tobias Bernward Bleninger, Rodrigo Bahia Pereira, Fabio Verissimo Goncalves
Summary: This paper compares bedload transport rates estimated with direct and indirect methods in a river with sand dunes in Brazil. The results show good agreement between methodologies, indicating the potential of using ADCPs for hydro sedimentological studies due to the advantages of integrating bathymetry, flow velocity, and bedload data.
APPLIED SCIENCES-BASEL
(2023)
Article
Engineering, Civil
Jiating Fu, Suying Yan, Ning Zhao, Hongwei Gao, Xiaoyan Zhao
Summary: The study investigated the parameters that influence sand particle transport and settlement in aeolian sand transport. Computational fluid dynamics simulations and wind tunnel tests were used to determine these influences. The results showed that parameters such as wind velocity, particle size, and obstacle tilt angle significantly affected sediment transport rate, sediment ratio, and collision recovery coefficient.
JOURNAL OF WIND ENGINEERING AND INDUSTRIAL AERODYNAMICS
(2022)
Article
Mechanics
Rajesh Kumar Mahato, Sk Zeeshan Ali, Subhasish Dey
Summary: This paper investigates the hydrodynamic instability of free river bars driven by weakly varying turbulent flows, and discusses their stability under different flow regimes through linear stability analysis. The study reveals the significant influence of shear Reynolds number, Shields number, and relative roughness on the stability of river bars, with limiting values affecting the feasibility of instability regions in the theoretical results at the next order.
Article
Geosciences, Multidisciplinary
Robert R. K. Wojcikiewicz, Nicholas P. Webb, Brandon L. Edwards, Justin W. Van Zee, Ericha M. Courtright, Brad F. Cooper, Niall P. Hanan
Summary: This study investigates the sampling errors and sample designs in aeolian sediment transport observations. The results show that randomly placing at least 17 samplers can improve the stability of the response to vegetative cover change. Multiple statistically significant models may exist when using smaller sample sizes, indicating the risks of underpowered sample design. Woody cover has a greater influence on aeolian sediment transport than herbaceous cover, and there are limitations of using vegetative cover as an indicator of aeolian sediment transport at large sample sizes.
JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE
(2023)
Article
Engineering, Chemical
Xin Yin, Ning Huang, Cong Jiang, Eric J. R. Parteli, Jie Zhang
Summary: This work is motivated by the lack of a model for the splash function associated with the collision of wind-blown sand grains onto an inclined granular surface. Numerical simulations using the Discrete-Element-Method (DEM) show that the effect of the bed slope on the splash function depends on the size of the impacting particle, which has implications for grain trajectories formative of ripples and dunes.
Article
Ecology
Elham Rafiei-Sardooi, Ali Azareh, Sharif Joorabian Shooshtari, Eric J. R. Parteli
Summary: Water scarcity is a serious issue globally, with land use and climate change as major factors contributing to its increase. The study found that climate change has a greater impact on water yield and supply, while land-use change has a significant effect on water consumption. Combining scenarios of land-use and climate change can have the most significant impact on water yield and supply.
ECOLOGICAL MODELLING
(2022)
Article
Geosciences, Multidisciplinary
Sandesh Kamath, Yaping Shao, Eric J. R. Parteli
Summary: The study investigates the transport of wind-blown sand over sparsely sand-covered soils through numerical simulations and establishes a quantitative model for sand transport rate variation with wind shear velocity. The research provides important insights for modeling Aeolian transport under low sand availability conditions.
GEOPHYSICAL RESEARCH LETTERS
(2022)
Article
Environmental Sciences
Jie Di, Zhiwen Dong, Eric J. R. Parteli, Ting Wei, Augusto Marcelli, Jiawen Ren, Xiang Qin, Shifeng Chen
Summary: This study investigates the deposition concentration, multiple origins, and release form of iron in glaciers and snowpack of the northeast Tibetan Plateau. The results show a heterogeneous geographic distribution of iron content, with aeolian dust and anthropogenic aerosols likely being the important sources. The release flux of dissolved iron reaches its peak in July, with meltwater showing higher concentrations than glacier snowpack. The Tibetan Plateau glacier is an important potential reservoir of dissolved iron and may have a significant impact on downstream ecosystems through iron biogeochemical cycle.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Geosciences, Multidisciplinary
Xiaoyu Jiao, Zhiwen Dong, Eric J. R. Parteli, Janice Brahney, Ting Wei, Marcelli Augusto, Junsheng Nie, Jiawen Ren, Xiang Qin
Summary: The production and emission of aeolian dust, as well as its analysis using U isotopes, provide important information on the links between geological evolution and climate. This study focuses on the Qinghai-Tibet Plateau and finds that dust from glacial areas has higher U isotope values, indicating higher erosion rates and fresh comminuted particles. The U isotope values of Qinghai-Tibet Plateau dust fall between high-elevation areas and dust sinks, suggesting both short comminution times and long residence time. Furthermore, the U-Nd-Sr isotopes in Qinghai-Tibet Plateau dust can be used as an effective tracer of dust provenance.
JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE
(2022)
Article
Geosciences, Multidisciplinary
Chan-Wen Jiang, Eric J. R. Parteli, Zhi-Bao Dong, Zheng-Cai Zhang, Guang-Qiang Qian, Wan-Yin Luo, Jun-Feng Lu, Feng-Jun Xiao, Fan-Min Mei
Summary: This study investigates the probability distribution function (PDF) of the lift-off velocities of wind-blown sand particles during sediment transport. The results show that the horizontal and vertical lift-off velocities display a bimodal distribution near the bed, with the first peak associated with splashed particles and the second peak caused by rebound particles. However, the lift-off velocities far from the bed follow a unimodal distribution.
Article
Geography, Physical
Kenton R. Fisher, Ryan C. Ewing, Orencio Duran Vinent
Summary: This study assesses the long-term and seasonal geomorphological changes at Padre Island, Texas using aerial and satellite images, as well as LiDAR data. The findings suggest that increased rates of relative sea level rise and decreased sediment influx are the primary drivers of the observed changes in the island's geomorphology. The study highlights the importance of monitoring these changes for informed decision making in sensitive coastal landscapes.
EARTH SURFACE PROCESSES AND LANDFORMS
(2023)
Article
Computer Science, Interdisciplinary Applications
Cong Jiang, Eric J. R. Parteli, Qian Xia, Xin Yin, Yaping Shao
Summary: In this study, a regional hydrological model is developed specifically for arid and semi-arid regions, taking into account the impact of irrigation on hydrological processes. The model is integrated with a new irrigation module into the Atmospheric and Hydrological Modelling System (AHMS) to quantitatively assess the basin-scale hydrological response to climate change and anthropogenic activities. By applying the model to the Yellow River Basin and calibrating it with in-situ and remote sensing observations, the study demonstrates the capability of AHMS for regional hydrological modelling in arid and semi-arid basins where irrigation plays a significant role in the water balance.
ENVIRONMENTAL MODELLING & SOFTWARE
(2022)
Editorial Material
Environmental Sciences
Eric J. R. Parteli
Summary: Global warming has significant implications for the Earth's arid sand deserts, affecting both the environment and technological sectors.
NATURE CLIMATE CHANGE
(2022)
Article
Physics, Multidisciplinary
Katharina Tholen, Thomas Pahtz, Sandesh Kamath, Eric J. R. Parteli, Klaus Kroy
Summary: Predicting the transport rates of windblown sand is important for various scientific fields and has been studied since the 1930s. However, the underlying dynamics of many-body interactions are not yet fully understood. In this study, we use simulations and modeling to show that the coupling between grain-bed collisions and granular creep within the sand bed enhances bed erodibility. Our minimal saltation model accurately predicts the observed scaling and a new undersaturated steady transport state.
PHYSICAL REVIEW LETTERS
(2023)
Editorial Material
Physics, Multidisciplinary
Irasema Alcantara-Ayala, Eric Josef Ribeiro Parteli, Biswajeet Pradhan, Sabatino Cuomo, Bianca Carvalho Vieira
FRONTIERS IN PHYSICS
(2023)
Editorial Material
Environmental Sciences
Zhiwen Dong, Eric Josef Ribeiro Parteli, Lunche Wang, Giovanni Baccolo, Rui Wu
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2022)
Article
Mechanics
Thomas Pahtz, Orencio Duran
Summary: We use a numerical model to simulate non-suspended sediment transport across a wide range of particle-fluid density ratios. Based on simulations and experiments, we derive simple scaling laws for aeolian transport and find that the cessation threshold is controlled by only one dimensionless parameter. Only one existing model is somewhat consistent with the data, but it fails to capture the grain size dependence of the transport rate, indicating a lack of understanding in this area.
JOURNAL OF FLUID MECHANICS
(2023)
Article
Multidisciplinary Sciences
Xiaoyu Jiao, Zhiwen Dong, Janice Brahney, Eric J. R. Parteli, Fangzhou Li, Marcelli Augusto, Ting Wei
Summary: Asian dust has a significant impact on the Earth's climate, global biogeochemistry, and hydrological cycle. By analyzing dust samples collected from glaciers, researchers can understand the origin and dynamics of dust. This study investigated dust samples from glaciers in the northern Tibetan Plateau and found significant spatial heterogeneity in the isotopic values of the dust. The study provides important insights into the origin and dynamics of dust in the Tibetan Plateau.
FUNDAMENTAL RESEARCH
(2022)
Article
Astronomy & Astrophysics
Maximilian Kruss, Tim Salzmann, Eric Parteli, Felix Jungmann, Jens Teiser, Laurent Schoenau, Gerhard Wurm
Summary: This study suggests that electrification of wind-blown sand can significantly lower the minimal threshold wind shear velocity for sand transport occurrence on Mars, potentially making it easier to restart particle transport that subsides once the wind shear velocity has fallen below the threshold for sustained transport than previously thought.
PLANETARY SCIENCE JOURNAL
(2021)