Article
Geosciences, Multidisciplinary
G. Calvani, C. Carbonari, L. Solari
Summary: Vegetation plays a crucial role in riverine environments by influencing hydrodynamics and morphodynamics. This study derived analytical formulations to predict the thresholds for vegetation colonization based on flow velocity and Froude number, considering submergence conditions. The results highlight the importance of vegetation characteristics and flow regime in determining the thresholds, and provide insights for river restoration projects and understanding bio-morphological changes.
GEOPHYSICAL RESEARCH LETTERS
(2022)
Article
Multidisciplinary Sciences
Sam Brooke, Austin J. Chadwick, Jose Silvestre, Michael P. Lamb, Douglas A. Edmonds, Vamsi Ganti
Summary: A study has found that the location of river avulsions is controlled by multiple factors, including changes in valley confinement, flow deceleration or acceleration within the backwater zone, and the extent of flood-driven erosion upstream. These findings have important implications for predicting and mitigating avulsion hazards, as well as understanding the impacts of land use and climate change.
Article
Multidisciplinary Sciences
Predrag Popovic, Olivier Devauchelle, Anais Abramian, Eric Lajeunesse
Summary: By studying laboratory rivers, we found that the balance between fluid stress, gravity, and cross-stream diffusion determines the shape and sediment flux of rivers. Rivers are restricted to exist near the threshold of sediment motion, and can widen to transport more sediment as total sediment discharge increases. The way sediment is transported in the flow depends on the state of sediment transport.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Article
Mechanics
Zi Wu, Arvind Singh, Efi Foufoula-Georgiou, Michele Guala, Xudong Fu, Guangqian Wang
Summary: This paper introduces a new formulation to describe bedload particle hops and successfully explains the relationship between short hops and long hops. By studying the scaling exponents of travel times in different regimes, the research provides insights into the sediment transport processes in rivers.
JOURNAL OF FLUID MECHANICS
(2021)
Article
Environmental Sciences
D. W. Haught, J. G. Venditti
Summary: Measurement of sediment in large rivers is difficult and expensive, but crucial for managing these systems in the face of climate change and rising sea levels. Acoustic methods are used to estimate suspended sediment, and a sediment-index methodology is presented and assessed for the Lower Fraser River.
WATER RESOURCES RESEARCH
(2023)
Article
Engineering, Civil
Teresa Serra, Marianna Soler, Aina Barcelona, Jordi Colomer
Summary: Sediment-replenished artificial flooding results in a more balanced suspended sediment transport compared to non-sediment-replenishment cases, with higher sedimentation rates during flood events.
JOURNAL OF HYDROLOGY
(2022)
Article
Geosciences, Multidisciplinary
D. Vazquez-Tarrio, R. Menendez-Duarte
Summary: Bedload transport is crucial for gravel-bed river morphodynamics, and its quantification is essential for various environmental issues and engineering applications. However, the sensitivity of bedload formulae to input parameters raises doubts when applying them to poorly gauged river reaches.
Review
Environmental Sciences
Richard J. Mason, Harry Sanders
Summary: Invertebrates play a significant role as sediment engineers in freshwater habitats, with their behavior influencing whether they have a destabilizing or stabilizing impact on sediment. While research has focused on biotic interactions, the complex interactions between lotic invertebrates and fluvial processes remain understudied, necessitating further research across a broader range of taxa, behaviors, and spatiotemporal scales.
WILEY INTERDISCIPLINARY REVIEWS-WATER
(2021)
Article
Ecology
Jin-Fu Li, Ye-Hong Chen, Samkele Tfwala, Su-Chin Chen
Summary: In Taiwan, floodplains are utilized for agriculture, but face erosion issues caused by plant growth. Through experiments and simulations, a planting design has been developed to reduce erosion, providing an effective management strategy for ecological engineers.
ECOLOGICAL ENGINEERING
(2021)
Article
Engineering, Civil
Eun-Kyung Jang, Un Ji
Summary: The study found significant differences in sediment load and concentration in different regions of South Korean rivers, highlighting the need for precise application of the relationship between discharge and sediment load and selective data based on relational conditions. Comparisons of existing sediment transport formulas using various goodness-of-fit methods showed variations in optimal formula selection.
KSCE JOURNAL OF CIVIL ENGINEERING
(2021)
Article
Geosciences, Multidisciplinary
Josep Fortesa, Giovanni Francesco Ricci, Julian Garcia-Comendador, Francesco Gentile, Joan Estrany, Eric Sauquet, Thibault Datry, Anna Maria De Girolamo
Summary: Flow and sediment play vital roles in water quality and nutrient delivery in river systems. This study investigated the impact of various factors on flow regime and suspended sediment transport in two Mediterranean intermittent rivers, highlighting the influence of geology and rainfall variability.
Article
Engineering, Civil
Jinliang Zhang, Yizi Shang, Jinyong Liu, Jun Lu, Shitao Wei, Zhanwei Wan, Qiushi Luo, Cuixia Chen, Liang Tong, Qing Wang, Jian Fu
Summary: The study proposes a method to remodel the water-sediment relationship of natural rivers by optimizing reservoir operation, aiming to improve the management of silt-laden rivers. This method was validated through practical tests in the Yellow River in China, demonstrating its effectiveness in enhancing sediment transport capacity in the lower reaches of the river.
JOURNAL OF HYDROLOGY
(2021)
Article
Environmental Sciences
Mohd Afiq Harun, Mir Jafar Sadegh Safari, Enes Gul, Aminuddin Ab Ghani
Summary: The study shows that machine learning models like EPR can provide better prediction accuracy for sediment transport models in Malaysian rivers, but further improvement is needed to better predict sediment transport.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Multidisciplinary Sciences
Evan N. Dethier, Miles Silman, Jimena Diaz Leiva, Sarra Alqahtani, Luis E. Fernandez, Paul Pauca, Seda Camalan, Peter Tomhave, Francis J. Magilligan, Carl E. Renshaw, David A. Lutz
Summary: Increasing gold and mineral mining activity in rivers across the global tropics has degraded ecosystems and threatened human health. Such river mineral mining involves intensive excavation and sediment processing in river corridors, altering river form and releasing excess sediment downstream. Our findings highlight the ubiquity and intensity of mining-associated degradation in tropical river systems.
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
Environmental Sciences
D. L. Karwan, J. E. Pizzuto, R. Aalto, J. Marquard, A. Harpold, K. Skalak, A. Benthem, D. F. Levia, C. M. Siegert, A. K. Aufdenkampe
WATER RESOURCES RESEARCH
(2018)
Article
Geosciences, Multidisciplinary
Sophie Bodek, James E. Pizzuto, Kristen E. McCarthy, Raphael A. Affinito
Summary: Studies on the White Clay Creek (WCC) in the Mid-Atlantic region have shown the impact of colonial-era watershed disturbances and urban development on its hydraulic geometry relations. The river exhibits quasi-equilibrium channel characteristics with partially immobile boulders and cobbles in its bed material composition.
JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE
(2021)
Article
Geosciences, Multidisciplinary
J. E. Pizzuto, K. J. Skalak, A. Benthem, S. A. Mahan, M. Sherif, A. J. Pearson
Summary: This study uses stratigraphic data to investigate sediment storage time scales in Mid-Atlantic river corridors, finding that pre-European settlement deposits and legacy sediments make up the majority of accumulated sediments, while modern sediments are less abundant. The age distributions evaluated over time reflect rapid post-settlement alluviation and enhanced preservation of younger sediments. These findings are important for the study of watershed-scale sediment-routing models.
GEOLOGICAL SOCIETY OF AMERICA BULLETIN
(2023)
Article
Geosciences, Multidisciplinary
J. E. Pizzuto, K. J. Skalak, A. Benthem, S. A. Mahan, M. Sherif, A. J. Pearson
Summary: New stratigraphic data from river corridors in New York State reveal sediment storage time scales since the Holocene, with implications for sediment routing models and understanding the influence of postsettlemen- t alluviation.
GEOLOGICAL SOCIETY OF AMERICA BULLETIN
(2022)
Article
Geography, Physical
A. Securo, C. Del Gobbo, L. Rettig, S. Pillon, A. De Luca, D. Fontana, E. Benedetti Fasil, R. R. Colucci
Summary: Small glaciers in temperate mountain regions have experienced significant reduction and unprecedented melt rates in recent years. Some glaciers have transitioned from clean ice to debris-covered or even rock glaciers. This study examines the surface elevation change of the Popera Alto glacier in the Sesto Dolomites using LiDAR and Structure from Motion surveys, and analyzes its evolution in terms of surface cover and geomorphic processes. The glacier has lost an average of 0.35 m water equivalent per year over the past 16 years, with active modification of its surface cover by geomorphic processes. The role of debris and local topography feedback has allowed the resilience of the glacier, leading to a marked difference between the current environmental equilibrium line altitude (envELA) and the effective ELA (effELA) of the glacier.
Article
Geography, Physical
Zhenzhen Yan, Yaolin Shi, Lili Kang, Xiangtao Fan
Summary: This study proposes a quantitative regional deformation model based on global positioning system (GPS) data to quantitatively analyze the morphological evolution of rivers in the Three Rivers Region. It finds that tectonic deformation phases significantly control regional landscape development and drainage features.
Article
Geography, Physical
Said Mukhtar Ahmad, Nitheshnirmal Sadhasivam, Mona Lisa, Luigi Lombardo, Mustafa Kemal Emil, Amira Zaki, Cees J. Van Westen, Islam Fadel, Hakan Tanyas
Summary: In this study, we investigated a large slow-moving landslide in Northern Pakistan, using Interferometric Synthetic Aperture Radar (InSAR) analysis. Our results showed that the crown of the landslide is moving faster than the surrounding regions, while the footslope experienced high deformations. We discussed the possible roles of meteorologic and anthropogenic factors in causing these deformations.
Article
Geography, Physical
Shuang Bian, Xibin Tan, Yiduo Liu, Suoya Fan, Junfeng Gong, Chao Zhou, Feng Shi, Michael A. Murphy
Summary: The Yarlung River's drainage divide is primarily moving north due to variations in precipitation across the Himalayas. The Gangdese drainage divide shows predominantly northward and southward migration, controlled by base-level rise and downstream influences. The presence of north-trending rifts separates the drainage divides into five zones, each with a distinct migration pattern.
Article
Geography, Physical
Joon-Young Park, Seok Yoon, Deuk-Hwan Lee, Seung-Rae Lee, Hwan-Hui Lim
Summary: This study developed a multiple-regression model to estimate site-specific average growth rates of debris flow events. The proposed model was validated through a case study and showed reasonable predictions of debris flow velocities and heights.
Article
Geography, Physical
Nicholas Reilly Mccarroll, Arnaud Temme
Summary: New geochronological data from hillslope boulder armor in the Flint Hills reveal the rates and timing of lateral retreat in the landscape. Surfaces of limestone boulders dating back to the Pleistocene era were found, and the ages of the hillslope armor increased with distance from the limestone bench. The estimated rate of lateral retreat in this landscape is 0.02 mm/yr.
Article
Geography, Physical
Xinbo Yao, Yuntao Tian
Summary: By studying the Longmenshan-Minshan drainage divide, we found that it has reached a dynamic steady state, indicating a balance between erosion and rock uplift. This study also reveals the process of formation and evolution of the divide and raises questions about the effectiveness of divide migration metrics.
Article
Geography, Physical
Junhui Yu, Pin Yan, Yanlin Wang, Guangjian Zhong, Changliang Chen
Summary: The seafloor mounds in the Chaoshan Depression of the South China Sea are identified as mud volcanoes, with fluids coming from underlying mud-fluid diapirs. The hydrocarbon gases feeding the mud volcanoes and diapirs are reasoned to originate from deep Mesozoic source rocks, indicating significant Mesozoic hydrocarbon potential in the Chaoshan Depression.
Article
Geography, Physical
Marius Huber, Luc Scholtes, Jerome Lave
Summary: This paper investigates the relationships between hillslope stability and fabric anisotropy of brittle rock materials and the implications for landscape shaping. It explores the different stability modes and movement characteristics of anisotropic materials, and demonstrates the significant control of material anisotropy on landscape shaping.
Article
Geography, Physical
Shubhra Sharma, Anil D. Shukla
Summary: The study investigates the relationship between glacial dynamics and lake sedimentation during the mid-Holocene climate variability in the Southern Zanskar ranges. It utilizes geomorphological disposition, elemental geochemistry, and optical chronology of relict lake sediment to reconstruct the pattern of minor glacier responses to climate variability. The results indicate six centennial to millennial-scale climatic phases, with warmer phases represented by decreased mineralogical fine grain flux and increased coarse grain flux. The study highlights the potential of relict lake sediment and para/peri-glacial landforms in understanding glacial dynamics and climate change during the Holocene.
Article
Geography, Physical
Jean-Francois Bernier, Sydney W. Meury, Patrick Lajeunesse
Summary: In this study, an approach combining various data and observation methods was proposed to improve the monitoring of landfast ice dynamics and its geomorphic impact on sedimentary systems. The results demonstrate the ability of the approach to accurately measure interannual variations in landfast ice and constrain geomorphic changes. Additionally, the study found a strong relationship between the severity of freezing seasons and the response of landfast ice to hydrometeorological events, with different geomorphic responses observed under different winter conditions.
Article
Geography, Physical
Heping Shu, Fanyu Zhang
Summary: This study investigates the relationship between susceptibility of soil-water hazards and human activities, geoheritage sites in the Loess Plateau, China. Landslide and gully erosion susceptibility were obtained using gradient boosting and support vector machines, and a hazard matrix was formed to couple landslide and gully erosion susceptibility. The study found different trends in the magnification times of soil-water hazards chain under different scenarios.
Article
Geography, Physical
Guangqiang Qian, Zhuanling Yang, Xuegang Xing, Zhibao Dong, Youyuan Guo
Summary: Granule ripples are aeolian landforms armored against erosion by coarse grains. This study investigates their seasonal morphological evolution and migration in the Sanlongsha Dune Field. The findings show that wind events, especially those exceeding the threshold velocities of coarse grains, significantly influence the morphodynamics of granule ripples. The study highlights the importance of considering the reptation and saltation of coarse grains in future research on granule ripples.