Advances in Water Resources最新文献

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Digital rock reconstruction enhanced by a novel GAN-based 2D-3D image fusion framework 基于 GAN 的新型 2D-3D 图像融合框架增强了数字岩石重建功能
IF 4 2区 环境科学与生态学
Advances in Water Resources Pub Date : 2024-09-06 DOI: 10.1016/j.advwatres.2024.104813
Peng Chi , Jianmeng Sun , Ran Zhang , Weichao Yan , Likai Cui
{"title":"Digital rock reconstruction enhanced by a novel GAN-based 2D-3D image fusion framework","authors":"Peng Chi ,&nbsp;Jianmeng Sun ,&nbsp;Ran Zhang ,&nbsp;Weichao Yan ,&nbsp;Likai Cui","doi":"10.1016/j.advwatres.2024.104813","DOIUrl":"10.1016/j.advwatres.2024.104813","url":null,"abstract":"<div><p>Digital rock analysis has become increasingly crucial in earth sciences and geological engineering. However, the multiscale characteristics of rock pores often exceed the capabilities of single-resolution imaging, which is inadequate for a comprehensive description of their characteristics. To address this issue, we introduce a novel multiscale rock image fusion framework based on a generative adversarial network (GAN). This method employs a 3D super-resolution convolutional neural network-based generator and a 2D discriminator to integrate low-resolution 3D images with high-resolution 2D images. Compared to existing methods, our approach directly generates high-resolution 3D data, which offers better continuity. Once trained, the generator can upscale low-resolution inputs to produce corresponding high-resolution outputs, thus completing the feature fusion of images with different resolutions. Experiments were conducted using two distinct datasets, encompassing both pore structure analysis and permeability simulation. The results indicate that the fused and reconstructed digital rocks closely resemble genuine digital rocks in terms of pore structure and flow properties. We have also expanded its application and achieved the fusion of 3D CT images with 2D SEM images. Furthermore, as the impact of low-resolution data decreases with increasing resolution difference. Therefore, it is recommended to select an appropriate scaling factor for effective fusion.</p></div>","PeriodicalId":7614,"journal":{"name":"Advances in Water Resources","volume":"193 ","pages":"Article 104813"},"PeriodicalIF":4.0,"publicationDate":"2024-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142167918","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}
引用次数: 0
Pore network models to determine the flow statistics and structural controls for single-phase flow in partially saturated porous media 确定部分饱和多孔介质中单相流的流动统计和结构控制的孔隙网络模型
IF 4 2区 环境科学与生态学
Advances in Water Resources Pub Date : 2024-09-06 DOI: 10.1016/j.advwatres.2024.104809
Ilan Ben-Noah , Juan J. Hidalgo , Marco Dentz
{"title":"Pore network models to determine the flow statistics and structural controls for single-phase flow in partially saturated porous media","authors":"Ilan Ben-Noah ,&nbsp;Juan J. Hidalgo ,&nbsp;Marco Dentz","doi":"10.1016/j.advwatres.2024.104809","DOIUrl":"10.1016/j.advwatres.2024.104809","url":null,"abstract":"&lt;div&gt;&lt;p&gt;We study the abilities of pore network models of different complexities to determine the flow statistics and structural controls for single-phase flow in partially saturated porous media. The medium permeability and hydraulic tortuosity are the basic parameters for upscaling flow problems from the pore to the Darcy scale. They represent average flow properties. However, upscaling and predicting dispersion and anomalous solute transport from the pore to the continuum scale requires knowledge of the velocity distribution, not only its mean values. Considering four different network models of increasing complexity, we analyze the statistical and structural properties of the fluid-filled pore space that determines the flow statistics. We consider statistical network models based on regular lattices with the same statistical properties as the porous medium regarding coordination number and pore-size distribution. We consider regular lattices which are characterized by uniform coordination, and diluted lattices, and random lattices, which are characterized by a distribution of coordination numbers. Furthermore, we consider a detailed network model, which accounts for the spatial location of pores, their coordination numbers, and the sizes of pore bodies and throats. The flow behaviors estimated from these network models are compared to direct numerical single-phase flow simulations in the digitized images of a fully and partially saturated two-dimensional porous medium and different saturation degrees. We find that the statistical network models can capture the saturation dependence of permeability and tortuosity but are not able to reproduce velocity statistics of even the velocity range observed in the direct flow simulations. The detailed network models, in contrast, provide excellent estimates for all flow statistics. This indicates that the configuration and correlation of the fluid phase are crucial structural controls of the observed distribution of flow velocities.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Plain Language Summary&lt;/strong&gt;&lt;/p&gt;&lt;p&gt;Conceptualizing a porous media as a network of conductors sets a compromise between the oversimplifying conceptualization of the media as a bundle of capillary tubes and the computationally expensive and unobtainable detailed description of the media’s geometry needed for direct numerical simulations. These models are abundantly being used to evaluate single and multiphase flow characteristics. The different flow characteristics are valuable in evaluating phenomena that may or may not be relevant for different applications. Here, we evaluate how different information about the pore space affects the ability of the network model to evaluate different flow characteristics.&lt;/p&gt;&lt;p&gt;We found that the resistance of a media to the fluid flow can be estimated by the general stochastic features of the media (its size and connectivity). However, to account for more complex phenomena, such as solute transport and dispersion through the ","PeriodicalId":7614,"journal":{"name":"Advances in Water Resources","volume":"193 ","pages":"Article 104809"},"PeriodicalIF":4.0,"publicationDate":"2024-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142167919","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}
引用次数: 0
Dam-Break waves over mobile bed 大坝断裂波及移动床
IF 4 2区 环境科学与生态学
Advances in Water Resources Pub Date : 2024-09-03 DOI: 10.1016/j.advwatres.2024.104801
Andrea Del Gaudio , Giovanni La Forgia , Francesco De Paola , Cristiana Di Cristo , Michele Iervolino , Angelo Leopardi , Andrea Vacca
{"title":"Dam-Break waves over mobile bed","authors":"Andrea Del Gaudio ,&nbsp;Giovanni La Forgia ,&nbsp;Francesco De Paola ,&nbsp;Cristiana Di Cristo ,&nbsp;Michele Iervolino ,&nbsp;Angelo Leopardi ,&nbsp;Andrea Vacca","doi":"10.1016/j.advwatres.2024.104801","DOIUrl":"10.1016/j.advwatres.2024.104801","url":null,"abstract":"<div><p>Dam-break waves are a major concern for communities and infrastructures in flood-prone areas. The impact of dam-break waves against rigid obstacles after propagation on a mobile bed is lacking both in experimental datasets and in numerical investigations aimed at assessing the capabilities and limitations of available morphodynamic models. To fill these gaps, a novel data set from experiments of dam-break waves propagating over an erodible bottom and impacting over a vertical wall is presented and compared with numerical simulations performed by the Saint Venant–Exner model. First, the effects of bottom mobility are discussed by comparison with the corresponding fixed bed condition. Then, supplementary conditions are investigated for different initial water levels and reservoir lengths. The comparison with the results of the numerical simulation shows that the relatively simple model employed is able to reproduce the general features of the process and the peak impact force with reasonable accuracy.</p></div>","PeriodicalId":7614,"journal":{"name":"Advances in Water Resources","volume":"193 ","pages":"Article 104801"},"PeriodicalIF":4.0,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142144422","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}
引用次数: 0
Anatomical Landmarks and Branching Patterns of the Greater Auricular Nerve. 大耳廓神经的解剖标志和分支模式
IF 0.8 2区 环境科学与生态学
Advances in Water Resources Pub Date : 2024-09-01 Epub Date: 2023-06-12 DOI: 10.1177/19433875231183032
Swafiya Busaidy Salim, Thomas Amuti, Fawzia Butt
{"title":"Anatomical Landmarks and Branching Patterns of the Greater Auricular Nerve.","authors":"Swafiya Busaidy Salim, Thomas Amuti, Fawzia Butt","doi":"10.1177/19433875231183032","DOIUrl":"10.1177/19433875231183032","url":null,"abstract":"<p><p>Descriptive cross-sectional study. <b>Background:</b> The greater auricular nerve (GAN) courses over the sternocleidomastoid muscle (SCM) to supply the area of skin over the parotid gland (PG), the lower auricle and over the mastoid. It is vulnerable to injury during rhytidectomies and parotidectomies, resulting in sensory losses and pain. Although previous studies have identified suitable landmarks, injury to the GAN in the Kenyan setting still occurs. This study therefore aimed at identifying specific landmarks for the GAN and describing its branching pattern. <b>Objective:</b> To determine the anatomical landmarks of the GAN and its branching patterns. <b>Methods:</b> Forty six nerves were studied. The skin and fascia of the neck was carefully dissected to reveal the platysma muscle, which was reflected to expose the GAN. The distance of the emergence of the GAN on the posterior border of the sternocleidomastoid muscle as measured from the mastoid process (MP) was measured. Its perpendicular distance from the tragus to the point of branching was also measured. Its distance to the external jugular vein (EJV) was taken using a ruler and a pair of dividers. Finally, the nerve was described according to McKinney's point. The pattern of branching was described as either type 1 (no branching), type 2 (2 branches) or type 3 (3 branches). The position of branching was classified as either anterior, posterior or middle. Collected data was coded into SPSS software (Version 21.0, Chicago, Illinois), and means ± standard deviation were calculated. Representative photos were taken. <b>Results:</b> The mean distance of the point of emergence of the nerve was 9.13 cm +/- 1.66 cm from the MP, while its distance from the tragus was 6.93 cm +/- 1.55. It was also located at a distance of 1.67 cm from the EJV. It mainly bifurcated into two branches (55.6%) and trifurcated in 4.4% of the cases. It remained undivided in 40% of the cases. In our study, the nerve mainly bifurcates in the anterior third of the SCM (22.2%). <b>Conclusions:</b> The GAN in our population mainly bifurcates, and it is more likely to divide closer to the parotid gland. The data presented in the study may be helpful in avoiding its iatrogenic injury.</p>","PeriodicalId":7614,"journal":{"name":"Advances in Water Resources","volume":"92 1","pages":"186-193"},"PeriodicalIF":0.8,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11528578/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75632030","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}
引用次数: 0
A computationally efficient queue-based algorithm for simulating volume-controlled drainage under the influence of gravity on volumetric images of porous materials 基于队列的高效计算算法,用于模拟多孔材料体积图像上重力影响下的体积控制排水系统
IF 4 2区 环境科学与生态学
Advances in Water Resources Pub Date : 2024-08-30 DOI: 10.1016/j.advwatres.2024.104799
Jeff T Gostick , Niloofar Misaghian , Ashkan Irannezhad , Benzhong Zhao
{"title":"A computationally efficient queue-based algorithm for simulating volume-controlled drainage under the influence of gravity on volumetric images of porous materials","authors":"Jeff T Gostick ,&nbsp;Niloofar Misaghian ,&nbsp;Ashkan Irannezhad ,&nbsp;Benzhong Zhao","doi":"10.1016/j.advwatres.2024.104799","DOIUrl":"10.1016/j.advwatres.2024.104799","url":null,"abstract":"<div><p>Simulating non-wetting fluid invasion in volumetric images of porous materials is of broad interest in applications as diverse as electrochemical devices and CO<sub>2</sub> sequestration. Among available methods, image-based algorithms offer much lower computational cost compared to direct numerical simulations. Recent work has extended image-based methods to incorporate more physics such as gravity and volume-controlled invasion. The present work combines these two developments to develop an image-based invasion percolation algorithm that incorporates the effect of gravity. Additionally, the presented algorithm was developed using a priority queue algorithm to drastically reduce the computational cost of the simulation. The priority queue-based method was validated against previous image-based methods both with and without the effect of gravity, showing identical results. It was also shown that the new method provides a speedup of 20X over the previous image-based methods. Finally, comparison with experimental results at three Bond numbers showed that the model can predict the real invasion process with a high accuracy with and without gravitational effects.</p></div>","PeriodicalId":7614,"journal":{"name":"Advances in Water Resources","volume":"193 ","pages":"Article 104799"},"PeriodicalIF":4.0,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0309170824001866/pdfft?md5=e9e26af968f00ea160cf881acdb504f0&pid=1-s2.0-S0309170824001866-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142150756","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}
引用次数: 0
Impact of coagulation characteristics on the aggregation of microplastics in upper-ocean turbulence 凝结特性对上层海洋湍流中微塑料聚集的影响
IF 4 2区 环境科学与生态学
Advances in Water Resources Pub Date : 2024-08-30 DOI: 10.1016/j.advwatres.2024.104798
F. Pizzi , M. Rahmani , C. Romera-Castillo , F. Peters , J. Grau , F. Capuano , L. Jofre
{"title":"Impact of coagulation characteristics on the aggregation of microplastics in upper-ocean turbulence","authors":"F. Pizzi ,&nbsp;M. Rahmani ,&nbsp;C. Romera-Castillo ,&nbsp;F. Peters ,&nbsp;J. Grau ,&nbsp;F. Capuano ,&nbsp;L. Jofre","doi":"10.1016/j.advwatres.2024.104798","DOIUrl":"10.1016/j.advwatres.2024.104798","url":null,"abstract":"<div><p>The dynamics and aggregation of microplastics in marine environments are investigated through high-fidelity direct numerical simulations with Lagrangian point-particle tracking. The properties of microplastics and biogenic particles, including size, density, and concentration, align with scenarios typical of seawater systems. The stickiness nature of microplastics, induced by biofilm formation (biofouling), is modeled through coagulation efficiency (stickiness parameter), which represents the probability of aggregation following a collision event. Two main aspects are at the core of the present work: analyzing the mechanisms of collision and coalescence between microplastics and biogenic particles, along with their spatial distribution, and characterizing the emerging aggregates. The results indicate that particles stickiness, concentration and (especially) size impact on the collision and coalescence rates. Furthermore, microplastics exhibit a strong tendency to accumulate near biogenic particles, leading to the creation of hetero-aggregates whose tendency to sink supports the general hypothesis of “missing microplastics”. Particularly, in cases where microplastics and biogenic particles are evenly concentrated, microplastics primarily contribute to the formation of aggregates. The stickiness mainly determines the most complex and large aggregates, which are less than 1% of the total.</p></div>","PeriodicalId":7614,"journal":{"name":"Advances in Water Resources","volume":"193 ","pages":"Article 104798"},"PeriodicalIF":4.0,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0309170824001854/pdfft?md5=fc4f45b46f9fa9d8b4ba89f62b60412c&pid=1-s2.0-S0309170824001854-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142121909","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}
引用次数: 0
Modeling fluid flow in heterogeneous porous media with physics-informed neural networks: Weighting strategies for the mixed pressure head-velocity formulation 用物理信息神经网络模拟异质多孔介质中的流体流动:压力水头速度混合公式的加权策略
IF 4 2区 环境科学与生态学
Advances in Water Resources Pub Date : 2024-08-28 DOI: 10.1016/j.advwatres.2024.104797
Ali Alhubail , Marwan Fahs , François Lehmann , Hussein Hoteit
{"title":"Modeling fluid flow in heterogeneous porous media with physics-informed neural networks: Weighting strategies for the mixed pressure head-velocity formulation","authors":"Ali Alhubail ,&nbsp;Marwan Fahs ,&nbsp;François Lehmann ,&nbsp;Hussein Hoteit","doi":"10.1016/j.advwatres.2024.104797","DOIUrl":"10.1016/j.advwatres.2024.104797","url":null,"abstract":"<div><p>Physics-informed neural networks (PINNs) are receiving increased attention in modeling flow in porous media because they can surpass purely data-driven approaches. However, in heterogeneous domains, PINNs often face convergence challenges due to discontinuities in rock properties. A promising alternative is the mixed formulation of PINNs, which utilizes pressure head and velocity fields as primary variables. This formulation introduces a multi-term loss function whose terms must be carefully balanced to ensure effective convergence during training. The main goal of this work is to identify the most suitable weighting technique to overcome convergence issues and enhance the applicability of the mixed formulation of PINNs for modeling flow in heterogeneous porous media. Thus, we implement and adapt different global and local weighting techniques and evaluate their performance through multiple test scenarios, involving stochastic and block heterogeneity. The results reveal that the most appropriate weighting strategy is the max-average technique. In the case of stochastic heterogeneity, this technique allows for improving the convergence of the training algorithm. In the case of discontinuous heterogeneity, the max-average method is the only strategy that achieved convergence, highlighting its robustness. The results also show that under high heterogeneity, using an appropriate weighting technique becomes imperative because baseline PINN failed to converge. Implementing an optimal weighting strategy can improve convergence and yield accurate solutions with fewer learnable parameters, thereby enhancing overall model performance.</p></div>","PeriodicalId":7614,"journal":{"name":"Advances in Water Resources","volume":"193 ","pages":"Article 104797"},"PeriodicalIF":4.0,"publicationDate":"2024-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0309170824001842/pdfft?md5=3c7306c2256ec90af4841dee7405bbc1&pid=1-s2.0-S0309170824001842-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142128406","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}
引用次数: 0
Generating interpretable rainfall-runoff models automatically from data 根据数据自动生成可解释的降雨-径流模型
IF 4 2区 环境科学与生态学
Advances in Water Resources Pub Date : 2024-08-28 DOI: 10.1016/j.advwatres.2024.104796
Travis Adrian Dantzer, Branko Kerkez
{"title":"Generating interpretable rainfall-runoff models automatically from data","authors":"Travis Adrian Dantzer,&nbsp;Branko Kerkez","doi":"10.1016/j.advwatres.2024.104796","DOIUrl":"10.1016/j.advwatres.2024.104796","url":null,"abstract":"<div><p>A sudden surge of data has created new challenges in water management, spanning quality control, assimilation, and analysis. Few approaches are available to integrate growing volumes of data into interpretable results. Process-based hydrologic models have not been designed to consume large amounts of data. Alternatively, new machine learning tools can automate data analysis and forecasting, but their lack of interpretability and reliance on very large data sets limits the discovery of insights and may impact trust. To address this gap, we present a new approach, which seeks to strike a middle ground between process-, and data-based modeling. The contribution of this work is an automated and scalable methodology that discovers differential equations and latent state estimations within hydrologic systems using only rainfall and runoff measurements. We show how this enables automated tools to learn interpretable models of 6 to 18 parameters solely from measurements. We apply this approach to nearly 400 stream gaging sites across the US, showing how complex catchment dynamics can be reconstructed solely from rainfall and runoff measurements. We also show how the approach discovers surrogate models that can replicate the dynamics of a much more complex process-based model, but at a fraction of the computational complexity. We discuss how the resulting representation of watershed dynamics provides insight and computational efficiency to enable automated predictions across large sensor networks.</p></div>","PeriodicalId":7614,"journal":{"name":"Advances in Water Resources","volume":"193 ","pages":"Article 104796"},"PeriodicalIF":4.0,"publicationDate":"2024-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142121910","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}
引用次数: 0
Interface and mixing zone between soil waters arising from upward and downward seepage - Part II: Heterogeneous total density. 上渗和下渗产生的土壤水之间的界面和混合区--第二部分:异质总密度。
IF 4 2区 环境科学与生态学
Advances in Water Resources Pub Date : 2024-08-22 DOI: 10.1016/j.advwatres.2024.104794
D. van de Craats , C.J. van Duijn , P.A.C. Raats
{"title":"Interface and mixing zone between soil waters arising from upward and downward seepage - Part II: Heterogeneous total density.","authors":"D. van de Craats ,&nbsp;C.J. van Duijn ,&nbsp;P.A.C. Raats","doi":"10.1016/j.advwatres.2024.104794","DOIUrl":"10.1016/j.advwatres.2024.104794","url":null,"abstract":"<div><p>Freshwater lenses in otherwise saline environments contain an important source of fresh water for natural vegetation and agricultural crops. Such lenses are regularly found in areas where both upward seeping saline groundwater and downward infiltrating fresh recharge water occur simultaneously during part of the year, resulting in shallow freshwater lenses which are highly susceptible to changes in recharge or seepage. In a series of two papers, we consider the water – and solute transport in a 2D cross-section between two parallel outflow faces. In this second part of the series, we build upon expressions presented in the first part to consider a situation where the density of seepage water exceeds that of recharge water, as typical for many deltaic areas around the world. Analytical expressions and approximations are given to obtain the steady state position of the interface between the two types of water using a sharp interface approximation, with a focus on the position midway between two outflow faces. Results show that the effect of a heterogeneous density distribution is limited when the seepage flux exceeds the density difference induced flux, but increases rapidly for ratios of the seepage flux over the density flux falling below 1. The heterogeneous density distribution then results in a decrease in freshwater lens thickness and, correspondingly, a decrease in fresh water availability. We also consider time-variant, oscillatory boundary conditions, and show that for heterogeneous density distributions the interface approaches its equilibrium position faster than for a corresponding situation with a homogeneous density distribution, indicating a higher vulnerability for changing boundary conditions. We also demonstrate that heterogeneous density distributions have limited effect on the amplitude of the interface oscillations. Analytical results obtained with the simplified model are validated using the numerical code SUTRA, which solves the full model for a numerical grid.</p></div>","PeriodicalId":7614,"journal":{"name":"Advances in Water Resources","volume":"193 ","pages":"Article 104794"},"PeriodicalIF":4.0,"publicationDate":"2024-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0309170824001817/pdfft?md5=beadb1b1895720d0f050e96422af5073&pid=1-s2.0-S0309170824001817-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142157934","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}
引用次数: 0
Replication of soil analogues at the original scale by 3D printing: Quantitative assessment of accuracy and repeatability of the pore structural heterogeneity 通过三维打印技术在原始尺度上复制土壤模拟物:孔隙结构异质性准确性和可重复性的定量评估
IF 4 2区 环境科学与生态学
Advances in Water Resources Pub Date : 2024-08-20 DOI: 10.1016/j.advwatres.2024.104795
Janis E. Patiño , Filippo Miele , Alejandro J. Perez , Zoe Kanavas , Mackenzie L. Dughi , Verónica L. Morales
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