Article
Environmental Sciences
Xujian Chen, Yuqi An, Zhihao Zhang, Chunhong Hu
Summary: This study establishes the equilibrium relations for water and sediment transport in the Yellow River, including the equilibrium relationships between water and sediment transport in the upper, middle, and lower reaches, as well as between sediment and the Tongguan elevation. The results show that erosion and deposition in the riverbeds are automatically adjusted, forming highly constrained equilibrium relationships for water and sediment transport.
INTERNATIONAL JOURNAL OF SEDIMENT RESEARCH
(2021)
Article
Engineering, Civil
Dongxian Kong, Chiyuan Miao, Qingyun Duan, Junhua Li, Haiyan Zheng, Jiaojiao Gou
Summary: This study investigated the impact of Xiaolangdi Dam on water discharge at multiple scales. The results showed that the dam had little effect on the total streamflow in the long run, but significantly changed the seasonal distribution. Through data reconstruction, it was estimated that the dam's construction and operation mitigated around 78% of potential flood events. The construction of Xiaolangdi Dam is of great importance for meeting water demand and eliminating the drying-up phenomenon in the river.
JOURNAL OF HYDROLOGY
(2022)
Article
Geosciences, Multidisciplinary
Hongfei Zhao, Yunhong Lin, Jie Zhou, Claudio O. Delang, Hongming He
Summary: The study reconstructs the spatial and temporal distribution of precipitation and vegetation cover in the Yellow River basin during the Holocene, and simulates soil erosion and sediment deposition processes. The findings demonstrate the impacts of climate change and human activities on the evolution of the fluvial landscape.
Article
Water Resources
Mohammad Sharifi, Mohammad Reza Majdzadeh Tabatabai, Seyed Hossein Ghoreishi Najafabadi
Summary: The study focused on the Tar River in Ghazi Station, Tehran Province, evaluating the design discharge needed for flood control structures. It concluded that the average of dominant, effective, and bankfull discharges could be suitable as the design discharge for the river, but flood control structures are unnecessary due to medium frequent flood events occurring in the river.
JOURNAL OF WATER AND CLIMATE CHANGE
(2021)
Article
Geosciences, Multidisciplinary
Junqiang Xia, Qingrong Jiang, Shanshan Deng, Meirong Zhou, Yifei Cheng, Zhiwei Li, Zenghui Wang
Summary: Based on the investigation of the evolution processes of sharp bends in the Lower Yellow River, it was found that these bends were highly sinuous and deformed rapidly. Bend cutoffs were frequently observed in the braided reach of the river, with ditch erosion and main flow scouring being the main causes. The inefficiency of regulation works in limiting sharp bend evolution was attributed to the incompatibility between the works and the flow and sediment conditions.
Article
Geography, Physical
Zhixiang Wang, Yongdong Mao, Jianzhen Geng, Chunju Huang, James Ogg, David B. Kemp, Ze Zhang, Zhibin Pang, Rui Zhang
Summary: The Yellow River, originating in the Tibetan Plateau, flows through the Loess Plateau and enters the North China Plain. The formation of the Sanmen Gorge resulted in the Yellow River directly flowing through, causing changes in the path and the formation of a lake in the Fenwei Graben. Tectonic activity and climate shifts may have influenced the modern path of the Yellow River.
GLOBAL AND PLANETARY CHANGE
(2022)
Article
Engineering, Civil
Wei Li, Lehong Zhu, Guohu Xie, Peng Hu, Huib J. de Vriend
Summary: This study analyzes the mechanism and influencing factors of peak discharge increase in the Lower Yellow River. The results show that the construction of the Xiaolangdi Reservoir is related to the increase in peak discharge, with the pressure term due to the river width gradient playing a major role in promoting the increase, while the external forces term is the primary cause that attenuates the increase.
JOURNAL OF HYDROLOGY
(2022)
Article
Geosciences, Multidisciplinary
Zhuoyuan Yang, Junqiang Xia, Meirong Zhou, Shanshan Deng, Zenghui Wang, Zhiwei Li
Summary: This study investigated the variation in flood discharge capacity in the Yellow River Estuary (YRE) during the period 1990-2016, revealing that bankfull discharges decreased during channel aggradation and increased during channel degradation. The study also established an empirical formula and a delayed response function between reach-averaged bankfull discharge and fluvial erosion intensity, showing high correlations between the two methods.
FRONTIERS OF EARTH SCIENCE
(2021)
Article
Geography, Physical
Zhongyun Li, Ke Zhang, Hao Liang, Zhen Chen, Zhanwu Ma, Jianguo Xiong, Ping Huang
Summary: The investigation of fluvial terraces in the Jinshaan Gorge of the Yellow River provides valuable insights into the origin and evolution of large rivers. Through the analysis of terrace profiles and the application of terrestrial cosmogenic nuclide dating, researchers have identified the timing of valley formation and incision processes. The results suggest that climate aridification and tectonic uplift played major roles in terrace aggradation and incision, respectively.
Article
Water Resources
Farzad Jalaeifar, Amin Sarang, Asghar Abdoli, Mohammad Hosein Niksokhan
Summary: This study proposes a new method for designing stable urban river geometries and predicts a 35% increase in the width of urban rivers in the future. The research emphasizes the urgent need to consider climate change in urban river restoration initiatives.
JOURNAL OF WATER AND CLIMATE CHANGE
(2023)
Article
Engineering, Civil
Yuyang Wu, Hongwei Fang, Guojian He, Lei Huang, Jianyu Wang
Summary: This study combines hydrological and 2-D hydrodynamic numerical modelling to provide a better representation of water resources and wetland dynamics in the Yarlung Tsangpo River basin in High Asia, showing significant impacts of climate change. Temperature exhibits a significant upward trend, while precipitation variations differ, resulting in noticeable differences in runoff changes in different areas.
JOURNAL OF HYDROLOGY
(2021)
Article
Environmental Sciences
Junqiang Xia, Yingzhen Wang, Meirong Zhou, Shanshan Deng, Zhiwei Li, Zenghui Wang
Summary: The Yellow River covers three climatic zones and channel migration is a major focus of study in geomorphology and river dynamics. The migration characteristics of channel centerline were investigated, revealing the importance of flow and sediment conditions in influencing channel evolution. Effective water resource projects can significantly reduce the migration rates and intensities of the Yellow River channel centerline.
Article
Engineering, Civil
Weiqing Li, Hui Qian, Panpan Xu, Kai Hou, Qiying Zhang, Wengang Qu, Wenhao Ren, Yao Chen
Summary: This study used EMMA, MDS, and PCA to identify sedimentary characteristics, provenance, and transport of sediments in the Yellow River Basin and analyze aeolian-fluvial interactions. Sediments in the source area came from the Tibetan Plateau, while those in the lower reaches came from the Chinese Loess Plateau (CLP). Sediment transport was controlled by simultaneous or alternating aeolian and fluvial processes. The study has implications for paleoclimatic reconstruction and soil and water conservation.
JOURNAL OF HYDROLOGY
(2023)
Article
Environmental Sciences
Nian Wu, Su-Mei Liu, Gui-Ling Zhang, Hong-Mei Zhang
Summary: Research conducted on nutrient alterations in the Yellow River environment revealed changing trends in concentrations of various nutrients, with some increasing and others decreasing. Suggestions for reducing nutrient discharges were proposed based on the findings.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Geography, Physical
Cheng Yifei, Xia Junqiang, Zhou Meirong, Deng Shanshan, Li Zhiwei
Summary: The study shows that the adjustment of flood discharge capacity in the Lower Yellow River is influenced by both channel and upstream boundary conditions. Between 1986 and 1999, the bankfull discharge in the studied reach decreased by 50%, accompanied by significant changes in channel morphology. However, the bankfull discharge gradually recovered in the post-dam stage as the main channel geometry changed. The effect of channel boundary condition was found to be more prominent than that of upstream boundary condition on the adjustment of bankfull discharge at certain stations and reaches.
JOURNAL OF GEOGRAPHICAL SCIENCES
(2021)
Article
Geography, Physical
Yu Zhang, Marwan A. Hassan, Leonora King, Xudong Fu, Erkan Istanbulluoglu, Guangqian Wang
Article
Multidisciplinary Sciences
Li Zhang, Tiejian Li, Guangqian Wang, Jeffrey S. Kwang, Jeffrey A. Nittrouer, Xudong Fu, Gary Parker
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2020)
Article
Environmental Sciences
Chenge An, Zheng Gong, Kensuke Naito, Gary Parker, Marwan A. Hassan, Hongbo Ma, Xudong Fu
Summary: Many sand-bed rivers worldwide are experiencing reductions in sediment load, leading to river delta drowning. This study proposes a grain size-specific relation to simulate river morphodynamic evolution, finding that sediment grain sorting accelerates bed surface armoring and reduces sediment load delivery to the delta. These results have practical implications for river delta restoration.
WATER RESOURCES RESEARCH
(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
Jiamei Wang, Marwan A. Hassan, Matteo Saletti, Xingyu Chen, Xudong Fu, Hongwei Zhou, Xingguo Yang
Summary: The flume experiments revealed significant impacts on the steep channel, including bed surface fining, aggradation, and continuous formation and collapse of steps, caused by sediment feed pulses of different magnitudes and frequencies. The threshold for motion decreased following sediment pulses, leading to changes in bed stability, indicating that sediment feed magnitude affects morphological changes, while sediment feed frequency controls channel stability.
WATER RESOURCES RESEARCH
(2021)
Article
Geosciences, Multidisciplinary
Xin Zeng, Astrid Blom, Matthew J. Czapiga, Chenge An, Gary Parker, Xudong Fu
Summary: In this study, a meta-analysis of measured data was conducted to analyze the relationship between gully erosion and cyclic steps in upland ephemeral gullies. A new theory of plunge pool erosion was proposed and validated for its consistency with measured data.
JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE
(2021)
Article
Mechanics
Weiquan Jiang, Li Zeng, Xudong Fu, Zi Wu
Summary: This article investigates the influence of reversible adsorption-desorption on solute dispersion and proposes a simpler analytical method to derive solutions using the Laplace transform. The classic framework of separation of variables is extended to explore higher-order statistics in practice, and Gill's generalized dispersion model for solute concentration distributions is also extended to address transient dispersion characteristics. The study analyzes the influence of reversible adsorption-desorption on solute cloud and discusses the characteristics of different concentration distributions.
JOURNAL OF FLUID MECHANICS
(2022)
Article
Geosciences, Multidisciplinary
Yongpeng Lin, Chenge An, Gary Parker, Weiming Liu, Xudong Fu
Summary: This study examines the morphodynamics of bedrock-alluvial rivers and the impact of landslide dam outburst floods. The simulation results reveal that during flood events, bedrock is eroded. In the following decades or centuries, landslide deposits can cover the river channel, hindering bedrock downcutting and resulting in a net rise of the bedrock surface. Eventually, a bedrock bump moves upstream and beyond the river reach over tens of thousands of years. When repeated dam breach events occur at a single site, a dynamic balance is achieved, with steeply increased bedrock slope near the dam site and gently decreased slope downstream. The study demonstrates the significant influence of landslide dam outburst floods on the behavior of bedrock channels.
JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE
(2022)
Article
Mechanics
Zi Wu, Weiquan Jiang, Li Zeng, Xudong Fu
Summary: This article investigates the statistical properties of bedload particle motions and provides analytical solutions for hop statistics. The deposition rate is found to be related to the mean travel times and hop distances of particles, allowing for a direct determination of the deposition rate based on measured particle motion statistics.
JOURNAL OF FLUID MECHANICS
(2023)
Article
Computer Science, Interdisciplinary Applications
Zheng Gong, Zi Wu, Chenge An, Bangwen Zhang, Xudong Fu
Summary: We present CP3d, a comprehensive Euler-Lagrange solver for the direct numerical simulation of particle-laden flows, which can handle different coupling regimes and utilizes various numerical approaches for fluid, particle, and coupling sub-solver. The solver is validated against several benchmarks, and shows excellent computational accuracy and efficiency.
COMPUTER PHYSICS COMMUNICATIONS
(2023)
Article
Environmental Sciences
Guangmiao Li, Zheng Gong, Weiquan Jiang, Jie Zhan, Bohan Wang, Xudong Fu, Mengzhen Xu, Zi Wu
Summary: The transport of active particles in shear flows, such as microorganisms, plays a significant role in biological and environmental applications. The motility and gyrotaxis of algae have been shown to greatly influence their transport in waters. However, little attention has been paid to the initial and transient transport regime. In this study, we extend Gill's generalized dispersion model to active particles and thoroughly investigate the effects of swimming, gyrotaxis, and flow shear on microorganism dispersion in an open-channel flow. We find that the presence of flow enhances the transient drift velocity and dispersivity of microorganisms, while the absence of flow weakens the longitudinal dispersion due to gravitactic accumulation and stronger swimming ability.
WATER RESOURCES RESEARCH
(2023)
Article
Environmental Sciences
Yongpeng Lin, Chenge An, Shan Zheng, Ruihua Nie, Gary Parker, Marwan A. Hassan, Matthew J. Czapiga, Xudong Fu
Summary: Since the 2008 Wenchuan Earthquake, the Shi-ting River in China has experienced significant bed degradation. This degradation is a result of multiple factors, including the presence of in-channel weirs, earthquake-induced mobilization of sediment, and intensive sediment mining. The study shows that weirs can reduce bedload transport and cause bed degradation, especially when coupled with additional sand supply. The simulation and observation both indicate that sediment mining is likely the key factor contributing to the dramatic bed degradation in the Shi-ting River.
WATER RESOURCES RESEARCH
(2023)
Article
Multidisciplinary Sciences
Chenge An, Hongwei Fang, Li Zhang, Xinyue Su, Xudong Fu, He Qing Huang, Gary Parker, Marwan A. Hassan, Nooreen A. Meghani, Alison M. Anders, Guangqian Wang
Summary: This passage explains why two large lakes, Dongting Lake and Poyang Lake, exist along the Yangtze River. It suggests that rising sea levels due to deglaciation caused a wave of water surface elevation and bed aggradation. The blockage of tributaries by the main stem's aggradation resulted in the formation of the lakes.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Geography, Physical
Xingyu Chen, Marwan A. Hassan, Xudong Fu
Summary: Image-based grain sizing has been used as an efficient method to measure grain size compared to traditional methods. However, current automatic detection methods based on image intensity have limitations in suboptimal environments. In this study, a convolutional neural network model called GrainID was proposed to measure grain size in diverse fluvial environments. Tests showed that GrainID had high predictive accuracy and outperformed other methods, even in uncalibrated rivers with drone images. GrainID also showed less variation in results and was less affected by vegetation and noise.
EARTH SURFACE DYNAMICS
(2022)
Article
Geography, Physical
Chenge An, Marwan A. Hassan, Carles Ferrer-Boix, Xudong Fu
Summary: Results from experiments show that conditioning flow can reduce sediment transport rate during subsequent floods, but this effect is limited to a relatively short time at the beginning of the flood event. The stress history effect induced by bed reorganization during conditioning phase is likely to be erased with increasing flow and sediment transport intensity during the subsequent flood event.
EARTH SURFACE DYNAMICS
(2021)
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.