Journal of Hydrology最新文献

{"title":"The Essential Role of REV Analysis Specific to Solute Transport in Homogeneous Porous Media and Its Implications for Flow-Dependent Dispersion Coefficients","authors":"Kuldeep Singh ,&nbsp;Victor Obi ,&nbsp;Shahiudul Muzemder ,&nbsp;Lichun Wang","doi":"10.1016/j.jhydrol.2024.132340","DOIUrl":"10.1016/j.jhydrol.2024.132340","url":null,"abstract":"<div><div>This study investigated the Representative Elementary Volume (REV) for solute transport using pore-scale computational simulations and laboratory column experiments in homogeneous media up to 1.83 m long. Non-Fickian tailing was observed at transport distances shorter than the solute transport REV, becoming more pronounced with increasing Peclet number (<em>Pe</em>). Non-Fickian ‘tails’ transitioned to Fickian ‘Gaussian’ characteristics between 1 and 1.83 m. The apparent dispersion coefficient converged towards a steady hydrodynamic dispersion coefficient between 1 and 1.5 m, both signifying the emergence of pore-scale solute transport physics into a continuum and defining the solute transport REV, rather than the ‘scale effect’. This challenges the assumption that Darcy’s law, with its much smaller REV (2.8 cm), is adequate for defining the continuum for solute transport. When the transport length was shorter than the solute transport REV, there was an overestimation of the <em>Pe</em>-dependent dispersion coefficient due to solute stretching from non-Fickian tailing, leading to nonlinear relationships. As the transport length approached the solute transport REV, the nonlinear <em>Pe</em>-dependence converged towards a linear relationship, conforming with hydrodynamic dispersion theory in the mechanical transport regime. Similarly, the longitudinal dispersivity coefficient showed <em>Pe</em> dependence until the transport reached the solute transport REV, beyond which it became <em>Pe</em>-independent, confirming theoretical expectations once again. These findings suggest a need to reconsider previously proposed exponents that did not account for the REV specific to solute transport. The differences observed between computational simulations and laboratory experiments, such as the persistent memory of subtle tails in simulations, suggest areas for future research. However, this study sets a benchmark for the methodology of estimating dispersion and dispersivity coefficients, including their <em>Pe</em> dependencies, in accordance with theoretical expectations through REV analysis specific to solute transport.</div></div>","PeriodicalId":362,"journal":{"name":"Journal of Hydrology","volume":"648 ","pages":"Article 132340"},"PeriodicalIF":5.9,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142748662","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Numerical study of impact pressure and force of cascading dam-break floods on the downstream dam","authors":"Shubing Dai ,&nbsp;Shuya Yang ,&nbsp;Yuchen Zhang ,&nbsp;Xiang He ,&nbsp;Ziren Li ,&nbsp;Yakun Liu ,&nbsp;Jingming Hou ,&nbsp;Dongpo Wang ,&nbsp;Jiuling Zhang ,&nbsp;Jijian Yang ,&nbsp;Yang Xue ,&nbsp;Sheng Jin ,&nbsp;Hansheng Liu ,&nbsp;Yu Li","doi":"10.1016/j.jhydrol.2024.132360","DOIUrl":"10.1016/j.jhydrol.2024.132360","url":null,"abstract":"<div><div>Cascading dam-break floods are among the most catastrophic natural disasters, causing significant casualties worldwide. Currently, research on cascading dam-break scenarios primarily focuses on the gradual dam-breaching and flood evolution processes. However, the research on the impact of cascading dam-break flood on downstream dam surface is rarely reported. Therefore, this study addresses this gap by establishing a shallow water hydrodynamic model based on the finite volume method. We conduct a numerical investigation into the effects of various parameters, including dam spacing, channel bed slope, initial water depths in upstream, middle and downstream reservoirs, and different cascading dam-break processes (two-stage and three-stage), on the impact on the downstream dam surface. The following conclusion can be drawn: factors such as dam spacing, bed slope and water depth have a significant impact on the impact pressure and force of downstream dam surface. All other conditions remain unchanged, the larger the dam spacing, the higher the peak and average values of downstream impact pressure, and the later the arrival time of dam-break floods on the downstream dam. The greater the bed slope, the higher the impact pressure, and the earlier the arrival time of the dam-break floods. The deeper the upstream or middle water depth, the greater the peak value and occurrence time of the impact pressure. The smaller the downstream water depth, the lower the impact pressure. The impact time of the three-stage dam-break floods is slightly later than that of the two-stage dam-break floods, but its peak and average impact pressure are higher. This study offers valuable scientific guidance and technical support for disaster prevention and mitigation strategies concerning cascading dam-break floods.</div></div>","PeriodicalId":362,"journal":{"name":"Journal of Hydrology","volume":"648 ","pages":"Article 132360"},"PeriodicalIF":5.9,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142748730","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Drivers of ecological drought recovery: Insights from meteorological and soil drought impact","authors":"Chenhao Ge ,&nbsp;Peng Sun ,&nbsp;Rui Yao ,&nbsp;Yayi Zhang ,&nbsp;Han Shen ,&nbsp;Huilin Yang","doi":"10.1016/j.jhydrol.2024.132324","DOIUrl":"10.1016/j.jhydrol.2024.132324","url":null,"abstract":"<div><div>Prolonged droughts typically have more severe impacts on ecosystems. The recovery time (RT) from drought is a crucial indicator for assessing the extent of drought impact on ecosystems. However, the drought recovery extent and dominant factors in the recovery characteristics of ecological drought (ED) from meteorological drought (MD) and soil drought (SD) remain to be further clarified. Therefore, this study employs reanalysis data and remote sensing vegetation indices to analyze the spatial patterns of ED recovery times from MD/SD (MRT/SRT). The dominant factors affecting RT across climatic zones were identified using random forest regression models and partial correlation, and the response characteristics of RT to these dominant factors under different land cover and irrigation types were explored. Regions with high recovery pressure and differential rates were identified, and their driving factors were explored. The results show that the SRT in China is approximately twice the MRT. Farmland experiences the highest MRT (4.9 months), particularly in the continuous and double-cropping irrigation areas of North China, while bare ground has the highest average SRT (6.4 months). MRT/SRT in China is most significantly influenced by surface temperature (TEM) and atmospheric vapor pressure deficit (VPD) during the recovery period, showing a predominant positive response to dominant factors across climatic zones. Grassland RT is notably affected by variations in all types of climatic factors. However, an increase in TEM and VPD significantly extends the RT of farmlands, especially in the double-cropping irrigation areas of North and Central China. Compared to MD, ED has more difficulty recovering from SD, exhibiting higher RT, recovery stress, and recovery differential rate. Decrease in soil moisture (SM) lead to poorer drought recovery outcomes. This study uncovers the differentiated recovery characteristics of ED in response to various types of drought and their dominant factors, deepening our understanding of the recovery process among different types of drought.</div></div>","PeriodicalId":362,"journal":{"name":"Journal of Hydrology","volume":"646 ","pages":"Article 132324"},"PeriodicalIF":5.9,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142701112","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of a subsurface dam on groundwater flow and salt transport in stratified coastal aquifers: Experiments and simulations","authors":"Chengji Shen ,&nbsp;Yu Fan ,&nbsp;Chunhui Lu","doi":"10.1016/j.jhydrol.2024.132327","DOIUrl":"10.1016/j.jhydrol.2024.132327","url":null,"abstract":"<div><div>Subsurface dams are now widely used to mitigate seawater intrusion in coastal aquifers. Previous studies have mostly focused on the optimal design of subsurface dams under various conditions, but such an attempt in the context of a three-layered (a low-permeability layer in between two high-permeability layers) aquifer is lacked. In reality, many coastal aquifer exhibit such a geological layering feature. This study, using laboratory experiments and numerical simulations, filled the research gap. The results show that, the addition of a subsurface dam to a three-layered coastal aquifer may significantly prolong the particle travel times in both the freshwater zone and the saltwater wedge. Also, the saltwater-freshwater mixing zone in a stratified aquifer can be narrowed by a subsurface dam. However, this trend is reversed when the subsurface dam is located rather landward. Moreover, a subsurface dam may hinder the formation of “freshwater fingers”, which would have formed in aquifers with highly contrasting permeability coefficients between the three layers. Further analysis reveals high-level sensitivity of saltwater-freshwater mixing zone to the height and location of the subsurface dam, and the permeability of the low-permeability layer. These findings promote deeper insights into the impact of subsurface dams on the underground hydrodynamics in complex nearshore groundwater systems. More importantly, conclusions drawn from the study may help to evaluate the environmental impact and optimize the design of subsurface dams to be constructed, ultimately assisting the management of coastal fresh groundwater resources.</div></div>","PeriodicalId":362,"journal":{"name":"Journal of Hydrology","volume":"646 ","pages":"Article 132327"},"PeriodicalIF":5.9,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142701217","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Assessing the efficacy of Permeable Interlocking Concrete Pavers (PICP) in managing stormwater runoff under climate change and land use scenarios","authors":"Yasir Abduljaleel ,&nbsp;Sylvester Richard Chikabvumbwa ,&nbsp;Faraz Ul Haq","doi":"10.1016/j.jhydrol.2024.132329","DOIUrl":"10.1016/j.jhydrol.2024.132329","url":null,"abstract":"<div><div>The study examines Permeable Interlocking Concrete Pavers (PICP) systems in urban and suburban areas facing intensified stormwater challenges due to climate change and evolving land use patterns. It investigates various factors affecting PICP performance, including soil, topography, vegetation, and rainfall intensity, using advanced modeling techniques. The study’s methodology integrates Personal Computer Storm Water Management Model (PCSWMM) model and Python scripting, utilizing historical and projected data to guide resilient PICP designs. Climate projections from 2030 to 2080 show a significant increase in stormwater runoff due to urbanization, emphasizing flood risk concerns. The findings indicated a substantial 43 % increase in runoff for the City of Renton-Cedar watershed in Washington from 2030 to 2069. Without PICP implementation, a notable 20.3 % surge in total runoff volume is anticipated. This highlights the crucial role of PICP and sustainable urban planning in mitigating urbanization’s impact on hydrology. With PICP implementation, the results show that the total runoff may reduce to a range within 24 %–75 % for the three land use scenarios (15 %, 25 % and 35 %). The results also exhibited a significant (P &lt; 0.05) and strong (R² &gt; 0.8) direct relationship between clogging and PICP systems. Overall, the research underscores PICP systems’ effectiveness in managing stormwater, emphasizing their importance in diverse urban settings, and advocating for green infrastructure adoption to enhance urban resilience amidst changing environmental dynamics.</div></div>","PeriodicalId":362,"journal":{"name":"Journal of Hydrology","volume":"646 ","pages":"Article 132329"},"PeriodicalIF":5.9,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142664265","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ditches as key players in carbon emissions in managed Phragmites-dominated wetland","authors":"Hao Xue ,&nbsp;Hu Ding ,&nbsp;Xiaokun Han ,&nbsp;Yunchao Lang ,&nbsp;Tiejun Wang ,&nbsp;Pan Li ,&nbsp;Manrong Qiao ,&nbsp;Dandan Liu ,&nbsp;Zhanhang Liu ,&nbsp;Congqiang Liu","doi":"10.1016/j.jhydrol.2024.132355","DOIUrl":"10.1016/j.jhydrol.2024.132355","url":null,"abstract":"<div><div><em>Phragmites</em> wetlands absorb carbon dioxide (CO₂) and store organic matter, acting as a greenhouse gas sink, but also emit methane (CH₄) from sediment, contributing to greenhouse gas emissions. Managed <em>Phragmites</em> wetlands for reserve purpose, with extensive drainage ditch networks, can be significant emission hotspots for greenhouse gases (GHGs), potentially countering terrestrial carbon sequestration efforts. However, there’s a lack of detailed data on GHG emissions and control from these ditches, and their role in ecosystem carbon budgets. To fill this gap, we conducted comprehensive monitoring of CH₄ and CO₂ emissions from ditches, rivers and ponds in Qilihai Wetland, a managed <em>Phragmites</em>-dominated Wetland Reserve in Tianjin, China. Our study identified ditches as significant emission hotspots for both CO₂ and CH₄, emitting CO₂ at 2.33 ± 0.71 μmol m⁻² h⁻¹, approximately 4.9 and 5.3 times higher than rivers and ponds, respectively. CH₄ emissions average 15.53 ± 9.77 μmol m⁻² h⁻¹, surpassing those from rivers and ponds by about 2.9 and 2.1 times, respectively. Methane ebullition was identified as a crucial contributor to emitted CH₄ from ditches, accounting for a fraction exceeding 70 %. Emissions of CO₂ and CH₄ in all waters were closely linked to DOC concentration and water temperature (T_w). Both gases increased with higher DOC levels, but while CH₄ rose with T_w, CO₂ declined. Additionally, CH₄ emission was negatively correlated with dissolved oxygen (DO) and the TN/TP (total phosphorus/total nitrogen) ratio. In ditches, it also negatively associated with chlorophyll-a (<em>Chl</em>-a) and positively linked with TP, different from other waters. Despite covering just 19 % of the water area, ditch emissions accounted for 53 % of the entire aquatic CO₂ equivalent emissions. The CO₂ and CH₄ emissions from ditches accounted for 55 % and 37 % of the entire aquatic CO₂ equivalent emissions for CO₂ and CH₄, respectively. Together, they offset 12 % of the net CO₂ fixation by vegetation, with ditch CH₄ emissions comprising 6 % of the total wetland CH₄ emission. This study highlights the substantial role of ditches in carbon emissions within managed <em>Phragmites-</em>dominated wetlands and their responses to environmental changes, providing valuable insights for future wetland management for conservation purposes.</div></div>","PeriodicalId":362,"journal":{"name":"Journal of Hydrology","volume":"647 ","pages":"Article 132355"},"PeriodicalIF":5.9,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142696336","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Unearthing the fate and transport of nanobubbles in groundwater: Significance of straining in nanobubbles deposition","authors":"Dan Zhang,&nbsp;Wenke Wang,&nbsp;Zhengyu Zhang,&nbsp;Fengjia Liu,&nbsp;Yufei Ma,&nbsp;Shengke Yang","doi":"10.1016/j.jhydrol.2024.132351","DOIUrl":"10.1016/j.jhydrol.2024.132351","url":null,"abstract":"<div><div>Knowledge of the transport and fate of nanobubbles (NBs) in groundwater is decisive to assess their remediation scope. In this work, based on the exploration of the stability of NBs in groundwater environmental conditions, the transport behavior and mechanism of NBs under physical (grain size, NBs concentration and flow velocity) and chemical conditions (pH, iron strength (IS) and types and dissolved organic matter (DOM)) were investigated by the column experiment and numerical simulation. The results showed NBs were more stable under alkaline and humic acid (HA) environment. NBs transport increased with the increase of grain size, NBs concentration, pH and HA, respectively. However, NBs transport was inhibited with the increase of acidity, electrolytes and L-Tryptophan (L-Trp) concentration, which was mainly due to these unfavorable factors will lead to an increase in the NBs size and a stronger electrostatic attraction at the interface between NB and sand, resulting in more retention of NBs in porous media. This was demonstrated by the Derjaguin–Landau–Verwey–Overbeek (DLVO) theory and straining calculations. The two–site deposition model showed a better fit. The straining rate (k_str) was greater than attachment rate (k_att), which proved the main retention mechanism of NBs in groundwater was a synergistic mechanism dominated by pore straining and supplemented by attachment (electrostatic attraction and blocking). These findings provided a theoretical basis for the application of NBs technology in groundwater.</div></div>","PeriodicalId":362,"journal":{"name":"Journal of Hydrology","volume":"646 ","pages":"Article 132351"},"PeriodicalIF":5.9,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142696334","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of cascade hydropower stations on hydrologic cycle in Xiying river basin, a runoff in Qilian mountain","authors":"Rui Li ,&nbsp;Guofeng Zhu ,&nbsp;Siyu Lu ,&nbsp;Gaojia Meng ,&nbsp;Longhu Chen ,&nbsp;Yuhao Wang ,&nbsp;Enwei Huang ,&nbsp;Yinying Jiao ,&nbsp;Qinqin Wang","doi":"10.1016/j.jhydrol.2024.132342","DOIUrl":"10.1016/j.jhydrol.2024.132342","url":null,"abstract":"<div><div>Establishing terraced hydropower stations in mountainous regions with abundant hydropower resources is a highly efficient approach to fostering socio-economic development. Nevertheless, the construction of hydropower stations would eventually cause substantial alterations in the hydrological cycle of a particular basin or region due to the artificial spatial distribution of water resources. This study examines the effects on the water cycle of stepped hydropower stations in the arid zone of Xiying River, in the northwestern of China. The study’s findings indicate that: (1) Hydropower stations rivers exceeded natural rivers in evaporation losses following the construction of these plants, leading to isotope enrichment in surface water. (2) Cascade hydropower station’s evaporative effect increases the proportion of recirculated water vapor within precipitation. (3) Increased surface and groundwater exchange through cascade hydropower stations. Consequently, when managing water resources in arid regions, it is imperative to consider the influence of artificial water conservancy structures, such as graded hydropower stations, on the local hydrologic cycle.</div></div>","PeriodicalId":362,"journal":{"name":"Journal of Hydrology","volume":"646 ","pages":"Article 132342"},"PeriodicalIF":5.9,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142696363","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cutting-Edge strategies for absence data identification in natural hazards: Leveraging Voronoi-Entropy in flood susceptibility mapping with advanced AI techniques","authors":"Seyed Vahid Razavi-Termeh ,&nbsp;Abolghasem Sadeghi-Niaraki ,&nbsp;Farman Ali ,&nbsp;Rizwan Ali Naqvi ,&nbsp;Soo-Mi Choi","doi":"10.1016/j.jhydrol.2024.132337","DOIUrl":"10.1016/j.jhydrol.2024.132337","url":null,"abstract":"<div><div>One of the non-structural methods for flood management is preparing flood susceptibility mapping (FSM). The performance of flood susceptibility models significantly depends on the learning methods and data sampling. Random sampling is commonly employed for data sampling owing to its practicality and straightforwardness. A purely random method may not be the best choice for non-flood sampling, as floods typically occur in different locations at different times. Therefore, this research aims to propose a new method for determining flood absence points using a combination of Voronoi diagrams and the entropy method. To achieve this, flood susceptibility modeling was conducted using the XGBoost (eXtreme Gradient Boosting) algorithm optimized with the cat swarm optimization (CSO) algorithm, employing the proposed method for absence point determination in the sub-basin of the Khuzestan province of Iran. Therefore, for flood susceptibility modeling, three scenarios for determining no-occurrence points were employed: random sampling (Scenario 1), Voronoi diagram (Scenario 2), and the combination of Voronoi diagram with entropy-based method (Scenario 3). Additionally, three data split ratios (60:40, 70:30, and 80:20) were utilized for partitioning training and validation datasets.</div><div>Scenario 1 demonstrates varying area under the curve (AUC) of the receiver operating characteristic (ROC) curve values across different data split ratios, with the 60:40 ratio showing moderate accuracy (AUC = 0.720). Scenario 2 exhibits improved performance with higher AUC values (0.847 to 0.908) and balanced sensitivity–specificity trade-offs. Scenario 3 demonstrates varying performance across different data split ratios, achieving the highest modeling accuracy with an AUC of 0.888 in the 60:40 split. Overall, Scenarios 2 and 3 outperform Scenario 1, showcasing significant accuracy improvements ranging from 23.33 % to 30.1 % across different data split ratios. Using Voronoi diagrams and entropy-based methods notably enhances accuracy in determining no-occurrence points compared to random selection, emphasizing the importance of method selection in flood susceptibility modeling.</div></div>","PeriodicalId":362,"journal":{"name":"Journal of Hydrology","volume":"648 ","pages":"Article 132337"},"PeriodicalIF":5.9,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142748659","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Stochastic optimization to maximize water supply index in conjunctive use of surface and groundwater","authors":"Mina Khosravi ,&nbsp;Abbas Afshar ,&nbsp;Paolo Perona ,&nbsp;David Andrew Barry ,&nbsp;Abdolrahim Salavitabar ,&nbsp;Abbas Ghaheri","doi":"10.1016/j.jhydrol.2024.132377","DOIUrl":"10.1016/j.jhydrol.2024.132377","url":null,"abstract":"<div><div>Systematic operation of water resources systems requires rules that consider the uncertainties affecting system performance. Here, stochastic dynamic programming (SDP) is used to structure and solve a full-scale surface and groundwater conjunctive use model to derive a multiparameter operational policy (rule) that maximizes the water supply index (<span><math><mrow><mi>WSI</mi></mrow></math></span>). The model uses a Markovian representation of inflows to account for hydrologic uncertainties. Both the reliability of allocated water and its vulnerability are employed to define the <span><math><mrow><mi>WSI</mi></mrow></math></span>. To overcome the computational burden inherent with SDP, infeasible solutions are identified and removed from the model solution process. Optimal expected values of <span><math><mrow><mi>WSI</mi></mrow></math></span> and surface and groundwater uses are assessed. The system simulation model with embedded rules is executed to assess the performance of the derived rules. The derived rules employ water rationing and account for long-term benefits during periods when the available surface and groundwater resources may suffice to meet demand. The simulation results demonstrate that the derived operational rules produce high <span><math><mrow><mi>WSI</mi></mrow></math></span> values for the long-term operation of the system and ensure sustainable groundwater use.</div></div>","PeriodicalId":362,"journal":{"name":"Journal of Hydrology","volume":"648 ","pages":"Article 132377"},"PeriodicalIF":5.9,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142748660","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}