Advances in Water Resources最新文献

{"title":"Flooding, nonlinear scaling and Jensen’s inequality: Analyzing changes in inundation extent with river discharge nonstationarity","authors":"Anupal Baruah ,&nbsp;Gilbert Hinge ,&nbsp;Supath Dhital ,&nbsp;Berina Mina Kilicarslan ,&nbsp;Omar Wani","doi":"10.1016/j.advwatres.2025.105170","DOIUrl":"10.1016/j.advwatres.2025.105170","url":null,"abstract":"<div><div>This study investigates the nature of the scaling relationships between inundation extents and river discharge. We do this by first introducing theoretical considerations and then subsequently analyzing 18 watersheds across the United States using extensive simulation experiments. We systematically produce multiple inundation extents using NOAA OWP HAND flood inundation model and explore the nature of the expected shifts in mean, median, and higher quantiles of inundation due to various kinds of river discharge nonstationarities. Viewing flood inundations through the lens of Jensen’s inequality, we show that the shifts in discharge do not result in proportionate shifts in flood inundation extents. This analysis generates insights related to two main questions: how catchment morphometric characteristics collectively shape the nonlinearity between inundation extent and discharge, and how this nonlinearity affects the shifting probabilities of inundation extents. Our results confirm the presence of nonlinear relationships, with varying slopes, across basins. While depth-discharge relationships are well-known in the community, our work examines how inundation-discharge scaling looks across catchments. We discuss how these behaviors are closely linked to static catchment characteristics and also touch upon implications under climate-induced hydrologic nonstationarities.</div></div>","PeriodicalId":7614,"journal":{"name":"Advances in Water Resources","volume":"206 ","pages":"Article 105170"},"PeriodicalIF":4.2,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145485383","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Bed roughness in gravel-bed rivers: Channel-scale responses to flow and sediment dynamics","authors":"Danrlei de Menezes,&nbsp;Ana Luiza Oliveira Borges","doi":"10.1016/j.advwatres.2025.105146","DOIUrl":"10.1016/j.advwatres.2025.105146","url":null,"abstract":"<div><div>Understanding flow resistance is fundamental for both scientific research and the development of engineering applications in fluvial systems. Accurate estimation is crucial for assessing flood magnitude, predicting ecological habitats, estimating sediment transport, and analyzing river morphodynamics. However, natural gravel beds exhibit complex three-dimensional organization, shaped by continuous processes of transport, deposition, and sediment reworking during flow events. This study investigates bed roughness behavior under sediment supply suppression in gravel-bed channels, assessing its variation with flow conditions and sediment dynamics. Experiments were conducted in a 10 m-long, 0.6 m-wide rectangular flume with a mobile bed, divided into two phases. In Phase 1, a morphologically stable bed configuration was established, achieving equilibrium and consistent sediment transport under a given discharge. Preliminary bed stabilization proved essential, as material adjustment and fine sediment infilling significantly influenced hydraulic response. In Phase 2, the hydraulic roughness of the stabilized bed was evaluated. Results showed that flow resistance decreases with increasing relative submergence, whereas low-flow and low-submergence conditions led to higher roughness due to bed microtopography and armoring layer development. Empirical equations underestimated resistance under high relative roughness, indicating the need for more specific formulations. Importantly, this is among the first experimental studies addressing bed roughness processes for a Brazilian mountainous river, providing novel insights for similar environments. The study also confirmed classical sediment transport concepts, such as grain-size sorting, armoring formation, and a critical discharge threshold for sediment mobilization. These findings contribute to improved parameterization of numerical models and advance the understanding of fluvial hydraulics.</div></div>","PeriodicalId":7614,"journal":{"name":"Advances in Water Resources","volume":"206 ","pages":"Article 105146"},"PeriodicalIF":4.2,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145358155","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A two-dimensional non-hydrostatic numerical model for dispersive waves generated by submerged landslides","authors":"Dede Tarwidi ,&nbsp;Sri Redjeki Pudjaprasetya ,&nbsp;Didit Adytia","doi":"10.1016/j.advwatres.2025.105100","DOIUrl":"10.1016/j.advwatres.2025.105100","url":null,"abstract":"<div><div>In this paper, a one-layer non-hydrostatic (NH-1L) model for simulating the generation of surface waves caused by the three-dimensional submerged landslide is developed. The non-hydrostatic model considered here is a depth-integrated version of the three-dimensional continuity and Euler equations, whereas time-varying bathymetry is accommodated in the kinematic equation along the bottom topography. The numerical scheme NH-1L is implemented on a two-dimensional staggered grid and is shown to have weakly dispersive properties. The validation of numerical results with analytical solutions and experimental data shows a satisfactory agreement. Moreover, the NH-1L model is investigated to predict wave run-up in confined bays. Considering its computational efficiency, the proposed NH-1L model provides a viable alternative for simulating wave generation, propagation, and run-up, particularly in cases with weak dispersion effects.</div></div>","PeriodicalId":7614,"journal":{"name":"Advances in Water Resources","volume":"206 ","pages":"Article 105100"},"PeriodicalIF":4.2,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145021029","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of geochemical reactions on flow properties during compressed air energy storage in aquifer","authors":"Shida Zheng ,&nbsp;Jinsheng Wang ,&nbsp;Chengzhi Wang ,&nbsp;Jiawei Liu ,&nbsp;Rui Zuo ,&nbsp;Guanlan Wu ,&nbsp;Xiaofan Yang ,&nbsp;Minghao Pan ,&nbsp;Hao Wang ,&nbsp;Guangrong Hu","doi":"10.1016/j.advwatres.2025.105134","DOIUrl":"10.1016/j.advwatres.2025.105134","url":null,"abstract":"<div><div>Reservoir flow properties are crucial for sustaining the magnitude and effectiveness of compressed gas energy storage in aquifer. Although changes in flow properties due to CO₂ injection have received attention, the impact of compressed air injection-induced geochemical reactions on flow properties has been overlooked. This study presents a series of controlled experiments with different reaction conditions to reveal the effects of pore-scale mechanisms of geochemical reactions on pore structure and flow properties. Although air injection enhanced the oxidation potential of the brine, oxidation reactions were limited due to the absence of oxidation-sensitive minerals. Integrated analyses of fluid chemistry, mineralogical characterization, and kinetic reaction modeling indicated that albite dissolution was the primary process governing rock property alteration. Albite dissolution occurring in pores and throats drives pore structure evolution and interconnects isolated pores, thereby leading to a significant increase in the total and connected porosity. As a result, an increase in permeability was observed. The brine percolating through the larger pores initiates the albite dissolution, further widens the seepage pathways and enhances the fluid flow. Ultimately, a quantitative relationship between permeability and porosity influenced by geochemical reactions was established. This study highlights the significance of geochemical reactions in compressed air energy storage in aquifer and provides essential theoretical insights for future numerical simulations and commercial exploitation.</div></div>","PeriodicalId":7614,"journal":{"name":"Advances in Water Resources","volume":"206 ","pages":"Article 105134"},"PeriodicalIF":4.2,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145263656","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Unravelling the role of pocket geometry in the entrainment of coarse sediment particles: Insights from IMU-based analysis","authors":"Xin Lu ,&nbsp;Bruce W. Melville ,&nbsp;Asaad Y. Shamseldin ,&nbsp;Lu Wang ,&nbsp;Yifan Yang ,&nbsp;Yushu Xie","doi":"10.1016/j.advwatres.2025.105166","DOIUrl":"10.1016/j.advwatres.2025.105166","url":null,"abstract":"<div><div>The entrainment of coarse sediment particles in gravel-bed rivers governs bed stability, channel evolution, and sediment transport. Understanding how local bed geometry influences the onset of motion for such particles remains a persistent challenge, owing to the complexity of near-bed turbulence and three-dimensional particle dynamics. This study investigates the role of pocket geometry in particle entrainment using a Smart Sediment Particle (SSP) instrumented with an inertial measurement unit (IMU). Controlled flume experiments were conducted over a fixed spherical bed to capture triaxial accelerations and angular velocities during entrainment and motion. Results show that, under fully submerged conditions, variations in flow depth exert little influence on entrainment thresholds, whereas pocket geometry governs both the onset and subsequent rotational behaviour. The saddle configuration requires lower critical velocities but produces stronger rotational impulses, while the grain-top configuration demands higher velocities yet leads to more sustained tumbling. The IMU-based approach reveals the coupling between hydrodynamic forcing and rotational dynamics, providing new insights for physically based sediment-transport modelling in coarse-bed rivers.</div></div>","PeriodicalId":7614,"journal":{"name":"Advances in Water Resources","volume":"206 ","pages":"Article 105166"},"PeriodicalIF":4.2,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145442116","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Experimental study on the generalised evolution characteristics of bedload clusters","authors":"Q.S. Yin,&nbsp;Y. Xiao,&nbsp;J.W. Li,&nbsp;X. Liu","doi":"10.1016/j.advwatres.2025.105143","DOIUrl":"10.1016/j.advwatres.2025.105143","url":null,"abstract":"<div><div>Bedload clusters are characteristic microtopographic features in gravel-bed rivers, influencing sediment transport, flow resistance, and bedform development. This study employs open-channel flume experiments to investigate the continuous evolution of bedload clusters under sequentially increasing flow intensity, characterised by the Shields number Θ (ratio of hydraulic shear stress to particle resistance). An enhanced motion trajectory tracking algorithm was developed to significantly outperform conventional nearest-neighbour methods by integrating adaptive Gaussian mixture modelling, dual-stage denoising, and a combined Kalman–Hungarian framework. This improved algorithm reduced particle coordinate identification errors by 70%, decreased the coefficient of variation by 66% compared to conventional methods, and achieved 100% trajectory recognition. Experiments revealed distinct thresholds of relative flow intensity (<em>Θ_R</em> = <em>Θ/Θ_C</em>, where <em>Θ_C</em> is the critical Shields number for entrainment) governing cluster evolution. In rectangular bed arrangements, clusters formed at 1.25 ≤ <em>Θ_R</em> &lt; 1.75, stabilised at 1.75 ≤ <em>Θ_R</em> ≤ 2.00, and disintegrated at <em>Θ_R &gt;</em> 2.00. In quincuncial arrangements, clusters formed at <em>Θ_R</em> = 1.25, disintegrated at <em>Θ_R</em> ≥ 1.50, with no stable phase observed. As <em>Θ_R</em> increased, the probability density distribution of cluster numbers exhibited a sequential transition from negatively skewed to normal, then to positively skewed, and finally to Poisson. Additionally, the critical drag force for the quincuncial arrangements was 73.82% of that for rectangular configurations, indicating greater flow sensitivity and more intense particle movement under identical hydraulic conditions. These findings enhance the understanding of bedload cluster dynamics and offer valuable insights into the microtopographic evolution in gravel-bed rivers.</div></div>","PeriodicalId":7614,"journal":{"name":"Advances in Water Resources","volume":"206 ","pages":"Article 105143"},"PeriodicalIF":4.2,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145324401","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Recovering head and flux distributions at the sediment-water interface for arbitrary, transient bedforms by inversion of photographic time series","authors":"Yoni Teitelbaum ,&nbsp;Shai Arnon ,&nbsp;Aaron Packman ,&nbsp;Scott K. Hansen","doi":"10.1016/j.advwatres.2025.105094","DOIUrl":"10.1016/j.advwatres.2025.105094","url":null,"abstract":"<div><div>We consider streambed head and flux distributions induced by hyporheic exchange flux through irregular and dynamic natural sand bedforms. It has not previously been feasible to study these in the laboratory owing to incompatibility between fixed-location pressure transducers and shifting sand bedforms. We address this problem, presenting a noninvasive technique for regularized inversion of photographic time series of dye front propagation in the hyporheic zone to recover head and flux distributions, compatible with arbitrarily-shaped, generally transient bedforms. We employ the technique to analyze three bench-scale flume experiments performed under different flow regimes, presenting a new data set of digitized bed profiles, corresponding head distributions, and dye fronts. To our knowledge, this is the first such data set collated for naturally-formed sand bedforms.</div></div>","PeriodicalId":7614,"journal":{"name":"Advances in Water Resources","volume":"206 ","pages":"Article 105094"},"PeriodicalIF":4.2,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145047326","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influence of froude number on the development and evolution of secondary flows in a sharply curved bend: An experimental and numerical study","authors":"Chengwei Hu ,&nbsp;Yujiao Liu ,&nbsp;Minghui Yu","doi":"10.1016/j.advwatres.2025.105126","DOIUrl":"10.1016/j.advwatres.2025.105126","url":null,"abstract":"<div><div>Meandering rivers sculpt landscapes and foster diverse ecosystems, with secondary flows in bends exerting a pivotal influence on sediment transport and channel morphology. Although the Froude number typically remains below 0.3 in natural meanders, the interplay of secondary flows under these low-Froude conditions is still poorly understood. This study addresses this knowledge gap by systematically examining the influence of Froude numbers (<em>Fr</em> = 0.12-0.21) on secondary flow structures in sharply curved channels through high-resolution flume experiments and numerical simulations. Results reveal that even slight variations in Froude number can markedly alter vortex dynamics and secondary flow complexity, underscoring a delicate balance between inertial and turbulent forces. In particular, the stability of S2-type secondary flows depends on the precise alignment of advective, centrifugal, and turbulence-induced vorticity. Minor shifts in inertial forcing can rapidly destabilize S2, leading to significant changes in velocity distributions. Additionally, a time or spatial lag between the onset of secondary circulation and the point of maximum velocity inversion points to a dynamic, two-way feedback between the secondary flow and the main flow, evolving from robust vortex growth at lower <em>Fr</em> to flow decay at higher <em>Fr</em>. These findings advance our understanding of secondary flow mechanisms in natural rivers and offer practical insights for river engineering and flood management, informing more effective strategies for sediment control and bank stability.</div></div>","PeriodicalId":7614,"journal":{"name":"Advances in Water Resources","volume":"206 ","pages":"Article 105126"},"PeriodicalIF":4.2,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145217978","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Multi-scale visualization of desorption in clay-coated microfluidic channels: Effect of flow dynamics and porous geometry","authors":"Negar Razaghi ,&nbsp;Mohaddeseh Mousavi Nezhad ,&nbsp;John Bridgeman","doi":"10.1016/j.advwatres.2025.105110","DOIUrl":"10.1016/j.advwatres.2025.105110","url":null,"abstract":"<div><div>This study investigates desorption dynamics in clay-rich porous media with multiple scales of pore size through a microfluidic approach that enables spatially resolved pore-scale observations of transport processes. Desorption, the release of previously sorbed substances from surfaces into surrounding fluid, is critical for contaminant transport, remediation strategies, and resource recovery in environmental systems. While microfluidic devices offer substantial advantages for studying transport processes in porous media, realistically replicating natural surface characteristics in traditional micromodels remains challenging. Geomaterial microfluidics, achieved by coating conventional substrates with rock or soil minerals, offers a powerful tool for visualising pore-scale mass transport and solid-fluid interactions. A key challenge in employing geomaterial-coated micromodels to explore sorption-desorption is the opacity of most geomaterial minerals, hindering visualization of mass concentration changes within porous media. This research introduces a streamlined clay coating procedure to functionalise polydimethylsiloxane (PDMS) microfluidic channels with transparent synthetic smectite clay, mimicking the physicochemical properties of clay porous media, enabling direct visualization of desorption processes across various flow conditions and porous geometries. Tracer flow tests conducted in a series of clay-coated microfluidic channels revealed the influence of fluid flow conditions and porous geometry on the microscale desorption behavior. Desorption of fluorescein, used as a model sorbate, was observed via fluorescence imaging, enabling visualization and quantification of concentration changes over time with high spatial resolution. The findings demonstrate that desorption behavior is influenced by the intricate interplay between fluid flow condition and porous geometry. While increasing flow rates accelerate desorption, this does not necessarily improve overall recovery efficiency (the proportion of previously sorbed substance that can be recovered). Lower flow rates result in longer times to achieve complete desorption, where no recoverable sorbate remains, but may reduce residual mass concentration at exhaustive desorption, highlighting the importance of optimizing flow conditions for efficient contaminant recovery. This work provides insights into transport phenomena relevant to efficient recovery of valuable substances from water, supporting circular economy principles through resource reuse while minimizing harmful by-products. By addressing the previously underexplored desorption dynamics in recovery processes, our findings contribute to developing sustainable treatment and recovery technologies for water management and environmental remediation.</div></div>","PeriodicalId":7614,"journal":{"name":"Advances in Water Resources","volume":"206 ","pages":"Article 105110"},"PeriodicalIF":4.2,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145094094","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Semi-analytical solutions for nonequilibrium transport and transformation of PFAS and other solutes in heterogeneous vadose zones with structured porous media","authors":"Sidian Chen ,&nbsp;Bo Guo","doi":"10.1016/j.advwatres.2025.105099","DOIUrl":"10.1016/j.advwatres.2025.105099","url":null,"abstract":"<div><div>We present screening-type semi-analytical models for quantifying the fate and transport of PFAS, including perfluoroalkyl acids (PFAAs) and their precursors (i.e., polyfluoroalkyl substances that can transform to PFAAs), in a heterogeneous vadose zone. The models employ one-dimensional multi-continuum representations with varying complexities (dual-porosity, dual-permeability, or triple-porosity). They account for PFAS-specific transport processes, including multi-site rate-limited adsorption at solid–water and air–water interfaces, and first-order biochemical transformation. Assuming steady-state infiltration, we derive semi-analytical solutions for all models under arbitrary initial and boundary conditions. We validate these new solutions using literature experimental breakthrough curves of PFAS and other solutes for various soils and wetting conditions. Furthermore, we demonstrate the models’ capability by analyzing the long-term leaching and mass discharge of two example PFAS (PFOS and a precursor PFOSB) in a heterogeneous vadose zone beneath a model PFAS-contaminated site. The results demonstrate that the precursor undergoes significant transformation and adds additional PFOS mass discharge to groundwater. Additionally, the simulations suggest that, due to strong retention in the vadose zone (i.e., large residence time), the PFAS in the high- and low-conductivity transport pathways can be considered as in equilibrium. Taking advantage of this result, we illustrate that the multi-continuum models may be simplified to an effective single-porosity model for simulating the transport of longer-chain PFAS in a heterogeneous vadose zone. Overall, the semi-analytical models provide practical tools for assessing long-term fate and transport of PFAS in the vadose zone and mass discharge to groundwater in the presence of precursor transformations.</div></div>","PeriodicalId":7614,"journal":{"name":"Advances in Water Resources","volume":"206 ","pages":"Article 105099"},"PeriodicalIF":4.2,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145094095","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}