International Journal of Sediment Research最新文献

{"title":"Effectiveness of bioengineering and geosynthetic integration for riverbank erosion control: A case study along the Mae Taeng River, Chiang Mai, Thailand","authors":"Krairoj Mahannopkul,&nbsp;Surat Semmad,&nbsp;Panich Voottipruex,&nbsp;Siriphat Maneekeaw","doi":"10.1016/j.ijsrc.2026.04.003","DOIUrl":"10.1016/j.ijsrc.2026.04.003","url":null,"abstract":"<div><div>This study evaluates the performance of erosion control measures incorporating geosynthetic materials and bioengineering approaches to mitigate riverbank erosion along the Mae Taeng River in Chiang Mai Province, Thailand. Four experimental field plots were established under different conditions, including geogrid mats with tensile strengths of 2, 10, and 20 kN/m, partial versus full surface coverage, and an untreated control plot. Riverbank cross-sectional profiles were monitored at two-month intervals over a 10-month period. Erosion resistance was assessed using a submerged jet test, while slope stability was analyzed using SLOPE/W and BSTEM numerical models. The results indicate that the plot treated with high-tensile geogrid mats combined with full surface coverage and vegetation exhibited the lowest erosion rate and the highest slope stability. Field measurements showed a reduction in erosion extent by 87.90% and an increase in the factor of safety (FS) by 22.64%, accompanied by a decrease in the erodibility coefficient from 10.23 to 0.19 cm³/(N·s). Numerical simulations further demonstrated strong agreement with field observations, with an RMSE of 0.211 and an NSE of 0.958. These findings suggest that integrating bioengineering strategies with geosynthetic materials provides an effective and practical solution for riverbank erosion control in tropical riverine environments.</div></div>","PeriodicalId":50290,"journal":{"name":"International Journal of Sediment Research","volume":"41 4","pages":"Pages 709-725"},"PeriodicalIF":3.4,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148640742","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influence of flow unsteadiness on local scour at bridge piers: An energy-based perspective","authors":"Qigang Chen,&nbsp;Jiacheng Li,&nbsp;Pengfei Li,&nbsp;Qiang Zhong","doi":"10.1016/j.ijsrc.2026.04.004","DOIUrl":"10.1016/j.ijsrc.2026.04.004","url":null,"abstract":"<div><div>Local scour at piers is a major cause of bridge failures worldwide. While most existing studies assume steady flow conditions, actual flood events are inherently unsteady, with distinct rising and falling limbs that significantly modify scour dynamics. This study investigates the influence of flow unsteadiness during the rising flood stage on local scour processes through combined theoretical analysis and flume experiments. A novel energy-based theoretical framework is proposed, wherein the effective scour work of the flow equals the energy gained by the scoured sediment. Laboratory tests with various hydrograph shapes were carried out to quantify the effective scour work under unsteady flow conditions. The results indicate that the flow unsteadiness contributes to an increase in effective scour work, thereby exacerbating local scour around bridge piers. This enhancement is positively correlated with the rising rate of flow and can be attributed to the added mass force induced on the pier and the reduction in the critical velocity for incipient scour, with the latter playing a more dominant role. When the rising rate of flow is smaller than 10⁻⁵ m/s², the effect of unsteadiness is negligible. However, flow unsteadiness contributes more than 20% to the effective scour work when the rising rate of flow is approximately 10⁻⁴ m/s² and may exceed 50% in extreme events. Finally, a theoretical model based on the balance between the effective scour work of flow and the energy gain of sediment is proposed to predict the temporal evolution of scour depth under unsteady flows. These findings elucidate the importance of considering the influence of flow unsteadiness on local scour at piers and provide a physics-based method to improve scour prediction under unsteady flow conditions.</div></div>","PeriodicalId":50290,"journal":{"name":"International Journal of Sediment Research","volume":"41 4","pages":"Pages 674-687"},"PeriodicalIF":3.4,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148640741","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Potential utilization of marine sediments from the neritic zone as adsorbents for dye and heavy metal removal: A comprehensive review for supporting sustainable development goals","authors":"Yudha Gusti Wibowo,&nbsp;Dedy Anwar,&nbsp;Arif Rohman,&nbsp;Hana Safitri,&nbsp;Alio Jasipto,&nbsp;Muhammad Akbari Danasla,&nbsp;Edo Kharisma Army,&nbsp;Jarwinda,&nbsp;Rahmat Fadhilah,&nbsp;Deni Mildan,&nbsp;Hutwan Syarifuddin,&nbsp;Anis Tatik Maryani","doi":"10.1016/j.ijsrc.2026.03.005","DOIUrl":"10.1016/j.ijsrc.2026.03.005","url":null,"abstract":"<div><div>Water pollution caused by synthetic dyes (including azo, cationic, and anthraquinone dyes) and heavy metals (Pb, Cd, Cr, Cu, Ni, and Zn) presents a significant environmental challenge, necessitating effective and sustainable remediation strategies. This review explores the potential utilization of marine sediments from the neritic zone as an alternative adsorbent for the removal of these contaminants. This review focuses on neritic (shelf) marine sediments. These materials are abundant, accessible, and mineralogically reactive. When responsibly sourced and governed, they offer a practical pathway for dye and heavy metal removal in saline and brackish waters. The study examines the physicochemical properties of neritic sediments, their adsorption mechanisms, and modification techniques to enhance their pollutant removal efficiency. Furthermore, the review evaluates the feasibility of integrating marine sediments into wastewater treatment applications, emphasizing their alignment with Sustainable Development Goals (SDGs), particularly in achieving clean water and environmental sustainability. The findings indicate that marine sediments can serve as a cost-effective and environmentally friendly adsorbent, with modification strategies such as acid/base treatment, thermal activation, and biofunctionalization further improving their performance. Challenges such as pollutant desorption, variability in sediment composition, and potential ecological impacts are also discussed, providing insights into future research directions and the scalability of sediment-based treatment systems. Overall, this review highlights the promising role of marine sediments from the neritic zone in water pollution control, offering an innovative approach to addressing global environmental concerns.</div></div>","PeriodicalId":50290,"journal":{"name":"International Journal of Sediment Research","volume":"41 4","pages":"Pages 688-708"},"PeriodicalIF":3.4,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148640743","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Suspended sediment concentration within submerged vegetation canopies: An improved method","authors":"Shanghong Zhang ,&nbsp;Hao Jia ,&nbsp;Caihong Tang ,&nbsp;Yujun Yi ,&nbsp;Yinghao Zhang ,&nbsp;Qipeng Mou","doi":"10.1016/j.ijsrc.2025.09.004","DOIUrl":"10.1016/j.ijsrc.2025.09.004","url":null,"abstract":"<div><div>Aquatic vegetation plays a crucial role in regulating sediment transport and maintaining the stability of aquatic ecosystems. To investigate the turbulence structure and suspended sediment distribution under the influence of natural flexible submerged vegetation, this study selected <em>Vallisneria natans</em> (eelgrass), a representative flexible submerged plant, as the experimental material. Systematic measurements of flow structure and suspended sediment concentration (SSC) were conducted under submerged vegetation conditions. The experimental results demonstrated that the presence of flexible vegetation significantly altered the vertical distribution of flow velocity and turbulence characteristics. Under different vegetation densities, noticeable variations were observed in time-averaged velocity, lateral and vertical Reynolds stresses, and turbulent kinetic energy (TKE), with particularly pronounced changes in the near-bed and canopy regions. Compared to the bare bed condition, SSC in vegetated flows was significantly reduced, and the reduction became more evident with increasing vegetation density. To predict the SSC profiles under flexible vegetation conditions, the vertical distribution of the turbulent diffusion coefficient was calculated. Results showed that the coefficient exhibited a linear distribution within the canopy, reaching a maximum near the canopy top. Based on this distribution pattern, an improved Rouse equation applicable to submerged flexible vegetation conditions was proposed. The modified Rouse model was validated against measured SSC profiles under various vegetation densities and hydraulic conditions, demonstrating its ability to accurately predict the vertical distribution of suspended sediment. This study provides theoretical support for sediment transport modeling, hydrodynamic regulation, and ecological restoration in vegetated riverine and lacustrine environments. It also lays a foundation for advancing the understanding of the coupled interactions among flow, sediment, and vegetation.</div></div>","PeriodicalId":50290,"journal":{"name":"International Journal of Sediment Research","volume":"41 1","pages":"Pages 135-144"},"PeriodicalIF":3.7,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145929054","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":"Long-term succession of fish biodiversity in the Yellow River Estuary under the influence of water–sediment regime changes","authors":"Yiping Wang ,&nbsp;Yongjun Lu ,&nbsp;Huaixiang Liu ,&nbsp;Yaohui Hu ,&nbsp;Xinhou Zhang ,&nbsp;Mingcheng Zhu ,&nbsp;Yuhong Zeng","doi":"10.1016/j.ijsrc.2025.10.001","DOIUrl":"10.1016/j.ijsrc.2025.10.001","url":null,"abstract":"<div><div>The estuarine reach of the Yellow River (YRE), located within the core zone of the Yellow River Delta Reserve, serves as a critical zone where the conservation and restoration of fish biodiversity constitute essential elements for achieving high-quality development in the Yellow River Basin. However, the fish population in this area is subject to multiple disturbances (especially water‒sediment regime changes), and because of the year-round fishing ban, relevant data are lacking. By integrating historical fish species records with water‒sediment phases classified via Bayesian mutation analysis and key drivers identified via principal component analysis, this study elucidates the reasons for the evolution of fish biodiversity. The results revealed mutation points of the annual runoff (2001) and sediment load (2004) in the YRE during 1950–2023, with a marked declining trend preceding these shifts (<em>P</em> &lt; 0.05), accompanied by fluctuations in fish taxonomic diversity and obvious changes in the dominant fish ecological types. Moreover, the key water–sediment factors influencing fish biodiversity were associated primarily with fish reproduction and migration during the investigation periods, including the proportion of monthly mean discharge relative to the natural baseline phase, minimum daily ecological flow guarantee rate, and annual flow cessation days in zero-flow years. We emphasize that these findings are based on empirical observations from implemented water regulations, but the causal relationship requires rigorous testing via process-based models or controlled experimental studies. Nevertheless, this study still provides the necessary empirical data and initial hypotheses for subsequent research, which can serve as a reference for optimizing protection measures for the YRE.</div></div>","PeriodicalId":50290,"journal":{"name":"International Journal of Sediment Research","volume":"41 1","pages":"Pages 170-181"},"PeriodicalIF":3.7,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145929055","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":"Short-term effects of polyacrylamide application on soil detachment capacity in rills of deforested hillslopes: A flume experiment","authors":"Misagh Parhizkar ,&nbsp;Manuel Esteban Lucas-Borja ,&nbsp;Nikolaos Tziolas ,&nbsp;Pietro Denisi ,&nbsp;Demetrio Antonio Zema","doi":"10.1016/j.ijsrc.2025.07.013","DOIUrl":"10.1016/j.ijsrc.2025.07.013","url":null,"abstract":"<div><div>Very few studies have explored the effectiveness of polyacrylamide (PAM) application on soil in mitigating rill erosion, especially in deforested environments. This study has measured the soil detachment capacity (<em>D</em>_c) on samples of deforested soil (untreated or treated with PAM). <em>D</em>_c has been estimated by flume experiments under three bed slopes (6.9 %, 17.2 %, and 18.2 %) and five flow discharges (0.078, 0.096, 0.116, 0.138, and 0.154 L·s⁻¹) together with three key soil properties (cation exchange capacity, mean weight diameter of soil aggregates, and organic matter content). Compared to the untreated soil, <em>D</em>_c has significantly (<em>p</em> &lt; 0.05) decreased on average by 38 % after the PAM application, while the cation exchange capacity, stability of soil aggregates, and organic matter content have increased (<em>p</em> &lt; 0.001) by 50 % to over 100 %. However, <em>D</em>_c is weakly correlated to the latter soil properties (<em>r</em> &lt; 0.33, <em>p</em> &lt; 0.05). A clear discrimination between treated and untreated sites has been revealed by a multivariate statistical analysis. The soil erodibility parameter (<em>K</em>_r) and critical shear stress (<em>τ</em>_c) in rills have also been estimated through linear regressions on <em>D</em>_c for use in erosion models. <em>D</em>_c can be accurately estimated by linear equations using the stream power as a predictor (<em>R</em>² &gt; 0.77). Overall, the study has demonstrated that PAM is an effective soil amendment that reduces soil detachment in rills of deforested hillslopes by about 40 %.</div></div>","PeriodicalId":50290,"journal":{"name":"International Journal of Sediment Research","volume":"41 1","pages":"Pages 145-154"},"PeriodicalIF":3.7,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145929053","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":"Analysis of sediment resuspension in shallow lake under variable wind speed and water depth","authors":"Wenguang Luo ,&nbsp;Yan Pan ,&nbsp;Jing Lu ,&nbsp;Jinxiao Zhao","doi":"10.1016/j.ijsrc.2025.06.011","DOIUrl":"10.1016/j.ijsrc.2025.06.011","url":null,"abstract":"<div><div>Understanding wind-induced sediment resuspension is essential for predicting turbidity dynamics and nutrient cycling in shallow lakes. This study investigates the spatial variability of sediment resuspension under different hydrodynamic conditions and quantifies the influence of wind-driven forces on sediment stability. A controlled laboratory experiment was conducted using a wind-generation system comprising 13 rows of fans positioned at varying distances and angles with respect to three distinct regions (A, B, and C). Turbidity variations exhibited a strong linear correlation with the dimensionless parameter (<em>W</em>²/<em>H</em>) (<em>R</em>² = 0.85–0.92), where <em>W</em> represents wind frequency (Hz) and <em>H</em> denotes water depth (m). This parameter effectively captures resuspension sensitivity. Further analysis showed that W, which reflects the proximity to the wind source, integrates the effects of both wind angle and position. Using the 50 NTU water quality threshold, critical (<em>W</em>²/<em>H</em>) values were determined as 2787, 7176, and 16,771 for regions A, B, and C, respectively—corresponding to wind frequencies of 17 Hz, 27 Hz, and 41 Hz at a depth of 0.1 m. Accordingly, regions B and C require approximately 1.6 and 2.5 times more wind energy than region A to reach the same turbidity level. These findings establish a quantitative relationship between wind-driven turbulence and sediment transport, providing insight into the spatial heterogeneity of sediment stability. This research offers both theoretical and practical implications for water quality management, including optimizing artificial aeration, mitigating eutrophication, and improving sediment regulation strategies in shallow lake ecosystems.</div></div>","PeriodicalId":50290,"journal":{"name":"International Journal of Sediment Research","volume":"41 1","pages":"Pages 36-44"},"PeriodicalIF":3.7,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145929124","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 effects on horseshoe vortex dynamics and soil erosion mechanisms in vegetated overland flows","authors":"Huilan Zhang ,&nbsp;Fangzheng Gu ,&nbsp;Shaoqin Xia ,&nbsp;Feng Li ,&nbsp;Ping Wang ,&nbsp;Linghan Wang ,&nbsp;Di Zhang ,&nbsp;Yanchong Duan ,&nbsp;Qigang Chen","doi":"10.1016/j.ijsrc.2025.07.004","DOIUrl":"10.1016/j.ijsrc.2025.07.004","url":null,"abstract":"<div><div>Understanding how bed roughness modulates hydrodynamic processes around vegetation is critical for predicting soil erosion patterns in sloped landscapes. Through flume experiments with high-frequency particle image velocimetry (PIV), this study quantifies the interactions between bed roughness (<em>k</em>_<em>s</em> = 0.009, 0.25, 0.75, 1.55) and horseshoe vortex (HV) dynamics under overland flow conditions (<em>Re</em>_<em>D</em> = 2627–3815). Time-averaged flow field analysis, based on vorticity and swirl strength methods, revealed that increasing surface roughness disrupted the HV system by reducing the number of vortices, decreasing the vorticity and swirl strength of the primary HV, and shifting its position closer to the bed. Statistical analysis of the instantaneous velocity components showed the emergence of bimodal probability density functions (PDFs) and joint probability density functions (JPDFs) in the near-wall region upstream of the cylinder, representing the backflow and downflow events. As roughness increased, the bimodal region decreased in size and shifted further from the cylinder. Linear stochastic estimation (LSE) was used to characterize the underlying flow modes, indicating that the backflow event was associated with the backflow mode, while the downflow event was linked to the zero-flow mode. Notably, roughness elements enhanced flow stagnation (zero-flow mode dominance &gt; 60 %), suggesting a potential mechanism for erosion mitigation. These findings provide quantitative linkages between micro-scale hydrodynamics and landscape-scale erosion processes, informing the design of vegetation-based erosion control strategies through targeted roughness manipulation.</div></div>","PeriodicalId":50290,"journal":{"name":"International Journal of Sediment Research","volume":"41 1","pages":"Pages 110-124"},"PeriodicalIF":3.7,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145929120","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":"Sedimentary organic matters within the subtropical mountainous river-estuary-bay continuum: Provenances, fates and implications","authors":"Fengling Yu ,&nbsp;Junyang Ma ,&nbsp;Zhaoquan Huang ,&nbsp;Chengcheng Gao ,&nbsp;Yishu Hou ,&nbsp;Liangrong Zou ,&nbsp;Dan Yu ,&nbsp;Nengwang Chen ,&nbsp;Siguang Liu ,&nbsp;Tian Xia","doi":"10.1016/j.ijsrc.2025.07.005","DOIUrl":"10.1016/j.ijsrc.2025.07.005","url":null,"abstract":"<div><div>Deep insight into the spatialtemporal composition and distribution dynamics of suspended particulate organic carbon (POC) and sedimentary total organic carbon (TOC) within the mountainous river-estuary-bay continuum provides us with a unique perspective for examining the impact of estuarine flow on the material cycle within the river-estuary-bay systems. In this study, we conducted a comparative analysis of the river-estuary-bay continuum of two subtropical mountainous rivers, the Jiulong River (JLR) and the Zhangjiang River (ZJR), southern China. Seasonal samples of suspended particles and surface sediments were collected from the lower river reaches, estuaries, and bay areas. Both suspended and sedimentary samples were analyzed for organic content and their isotopic signatures (δ¹³C), and C/N ratios. The results reveal notable differences between the two systems. The JLR system exhibits stronger seasonal and spatial variations in POC sources compared to the ZJR system. In contrast, the estuary and bay of the ZJR system show more pronounced marine POC signals than those of the JLR system. In the sediments of the estuary and bay, soil organic matter and C₃ plants contribute to over 60 % of the total organic matter in the JLR system, whereas in the ZJR system, marine organic matter and soil are the two most significant contributors. This study identifies that estuarine hydraulic conditions control the provenance, dynamics, and fate of particulate organic matter (POM). River discharge plays a pivotal role in regulating the dispersion of terrestrial organic matter in the estuary; Estuarine circulation and the position of the turbidity maximum zone govern the temporal and spatial distribution of sedimentary organic matter. Moreover, high soil contribution to the estuarine and bay sediment organic matter suggests strong soil erosion of adjacent land, likely attributed to human activities. Our findings highlight the high sensitivity of POC composition and dynamics in these mountainous river-estuary-bay systems to changes in river discharge, tidal current, and maybe wave conditions. The results of this study will deepen our understanding of the dynamics and fate of POM from different sources within the mountainous river-estuary-bay continuum and provide vital information for the effective management of these highly dynamic and sensitive ecosystems.</div></div>","PeriodicalId":50290,"journal":{"name":"International Journal of Sediment Research","volume":"41 1","pages":"Pages 72-82"},"PeriodicalIF":3.7,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145929118","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":"River system sediment rating curve parameter estimation via integrated models","authors":"Tushar Khankhoje,&nbsp;Samrat Boro,&nbsp;Parthasarathi Choudhury","doi":"10.1016/j.ijsrc.2025.06.010","DOIUrl":"10.1016/j.ijsrc.2025.06.010","url":null,"abstract":"<div><div>Continuous water and sediment flow monitoring across river cross sections is essential for the management of flood- and sediment-related problems in watersheds. The sediment rating curve (SRC) estimates missing or uncertain sediment flow via its corresponding water discharge. Generally, a power form of relationship correlates the two quantities. The log-transformed water discharge and sediment discharge data were used to depict the SRCs developed in the present study. SRC parameter estimation via least squares regression using at-site dataset pairs can be found in the literature. However, the availability of reliable datasets at the site limits model applicability. This method does not describe the SRC on the basis of the continuity aspects of river system flow characteristics. Therefore, the current study proposes integrated SRC estimation models (Model 2 and Model 3) using modified Muskingum equations abiding by the spatial and temporal continuity of the entire river system state. These models are derived from streamflow storage balance criteria and ensure flow continuity norms. Moreover, Model 3 considers an inverse power form of the relationship depicting the water flow characteristics that govern the sediment transport phenomena through the river system. Standalone models for SRC parameter estimation (Model 1) were also developed for comparison among all three models via the root mean square error (RMSE), NRMSE (normalized root mean square error) and coefficient of determination (<em>R</em>²). The Mahanadi River system within Chhattisgarh state, India comprises five sections at tributaries, and the main channel was considered for the study. The improved NRMSE by Model 2 (7.53%) and Model 3 (7.14%) at Rajim and Model 3 (3.44%) at Bamnidhi in comparison to Model 1 at Rajim (9.19%) and Bamnidhi (4.80%) encouraged the application of integrated models for SRC estimation in river systems. Moreover, Model 3 outperformed Model 2 in some cases where the sediment transport process may be governed by water flow characteristics.</div></div>","PeriodicalId":50290,"journal":{"name":"International Journal of Sediment Research","volume":"41 1","pages":"Pages 45-59"},"PeriodicalIF":3.7,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145929125","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}