Groundwater最新文献

{"title":"Deep-Seated Fluids in Thermal Waters Before and After the 2016 Kumamoto Earthquakes","authors":"Fumiaki Tsunomori,&nbsp;Noritoshi Morikawa,&nbsp;Masaaki Takahashi","doi":"10.1111/gwat.13394","DOIUrl":"10.1111/gwat.13394","url":null,"abstract":"<p>Noble gases, oxygen-hydrogen isotope ratios, and ion compositions were measured at three sampling points (KUM, OTN, and ASO) from December 2013 to July 2021. The ³He/⁴He values at the three sampling points remained stable in the range of 3–4 Ra throughout the observation period, suggesting that the supply of deep-seated gases to the aquifer was stable. The ⁴He/²⁰Ne values of KUM and OTN indicate that the supply of surface-source fluids to the aquifer decreased relative to that of deep-seated fluids at KUM and OTN. In contrast, in the ASO site, both the surface- and deep-seated fluids supplied to the aquifer were stable. The δD–δ¹⁸O relationship indicated the supply of deep-seated water to the KUM and OTN aquifers but not to the ASO aquifer. Nevertheless, the δD–δ¹⁸O relationship remained stable throughout the observation period, suggesting that the supply of deep-seated water to the three stations was stable. The Li/Cl and 1/Cl relationships for the three sampling points were plotted within a narrow range throughout the observation period, suggesting that the groundwater recharge was stable. Neither spikes nor step changes owing to the 2016 Kumamoto earthquake were observed in any of the data. These results indicate that the KUM and OTN aquifers are constantly supplied with deep fluids from the fluid-rich zone beneath the Kumamoto region, and that only deep-seated gas was supplied to the ASO aquifer. We also confirmed that these supply conditions were unaffected by the 2016 Kumamoto earthquake or the subsequent aftershock activity.</p>","PeriodicalId":12866,"journal":{"name":"Groundwater","volume":"62 5","pages":"702-713"},"PeriodicalIF":2.0,"publicationDate":"2024-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/gwat.13394","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139693722","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Surface Deformation and Seismicity Linked to Fluid Injection in the Raton Basin","authors":"Cameron R. Chambers,&nbsp;Megan R. M. Brown,&nbsp;Scott M. Stokes,&nbsp;Shemin Ge,&nbsp;Elizabeth A. Menezes,&nbsp;Kristy F. Tiampo,&nbsp;Anne F. Sheehan","doi":"10.1111/gwat.13393","DOIUrl":"10.1111/gwat.13393","url":null,"abstract":"<p>It is suggested that in addition to seismicity deep fluid injection may cause surface uplift and subsidence in oil and gas-producing regions. This study uses the Raton Basin as an example to investigate the hydromechanical processes of surface uplift and subsidence during wastewater injection. The Raton Basin, in southern central Colorado and northern central New Mexico, has experienced wastewater injection related to coalbed methane and gas production starting in 1994. In this study, we estimate the extent and magnitude of total vertical deformation in the Raton Basin from 1994 to 2020 and incremental deformation between the years 2017 to 2020. Results indicate a modeled uplift as much as 15 cm occurring between 1994 and 2020. Between 2017 and 2020, up to 3 cm of uplift occurred, largely near the northwestern injection wells. Most modeled uplift between 1994 and 2020 occurred near the southern wells, where the greatest cumulative volume of wastewater was injected. However, modeled subsidence occurred around the southern and eastern wells between 2017 and 2020, after the rate of injection decreased. Modeling indicates that while the magnitude of modeled uplift corresponds to cumulative injection volume and maximum rate in the long-term, short-term incremental deformation (uplift or subsidence) is controlled by changes in the rate of injection. The number of yearly earthquake events follows periods of rapid modeled uplifting throughout the Basin, suggesting that measurable surface deformation may be caused by the same injection-induced pore pressure perturbations that initiate seismicity.</p>","PeriodicalId":12866,"journal":{"name":"Groundwater","volume":"62 5","pages":"690-701"},"PeriodicalIF":2.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/gwat.13393","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139652472","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"MODPATH-RW: A Random Walk Particle Tracking Code for Solute Transport in Heterogeneous Aquifers","authors":"Rodrigo Pérez-Illanes,&nbsp;Daniel Fernàndez-Garcia","doi":"10.1111/gwat.13390","DOIUrl":"10.1111/gwat.13390","url":null,"abstract":"<p>Random walk particle tracking (RWPT) is a discrete particle method that offers several advantages for simulating solute transport in heterogeneous geological systems. The formulation is a discrete solution to the advection-dispersion equation, yielding results that are not influenced by grid-related numerical dispersion. Numerical dispersion impacts the magnitude of concentrations and gradients obtained from classical grid-based solvers in advection-dominated problems with relatively large grid Péclet numbers. Accurate predictions of concentrations are crucial for reactive transport studies, and RWPT has been recognized for its potential benefits for this kind of application. This highlights the need for a solute transport program based on RWPT that can be seamlessly integrated with industry-standard groundwater flow models. This article presents a solute transport code that implements the RWPT method by extension of the particle tracking model MODPATH, which provides the base infrastructure for interacting with several variants of MODFLOW groundwater flow models. The implementation is achieved by developing a method for determining the exact cell-exit position of a particle undergoing simultaneous advection and dispersion, allowing for the sequential transfer of particles between flow model cells. The program is compatible with rectangular unstructured grids and integrates a module for the smoothed reconstruction of concentrations. In addition, the program incorporates parallel processing of particles using the OpenMP library, enabling faster simulations of solute transport in heterogeneous systems. Numerical test cases involving different applications in hydrogeology benchmark the RWPT model with well-known transport codes.</p>","PeriodicalId":12866,"journal":{"name":"Groundwater","volume":"62 4","pages":"617-634"},"PeriodicalIF":2.0,"publicationDate":"2024-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/gwat.13390","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139566416","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Influence of Geometric Characteristics on Water Flow and Solute Transport at Fracture Intersections","authors":"Jiazhong Qian,&nbsp;Xueqi Liang,&nbsp;Yong Liu,&nbsp;Lei Ma,&nbsp;Xiangquan Li,&nbsp;Chunchao Zhang","doi":"10.1111/gwat.13391","DOIUrl":"10.1111/gwat.13391","url":null,"abstract":"<p>Laboratory experiments and numerical simulations were performed to explore the influence of intersection geometry on fluid flow and solute transport in fractures. Fractures were engraved and sealed into an acrylic plate and two orthogonal intersections with different geometry were constructed. The effects of curvature and relative shear displacement at intersections on preferential flow and solute transport were investigated. By solving the Navier–Stokes (NS) equation, the fluid mixing and solute distribution were predicted. The results showed that the geometric characteristics at the intersection have a significant effect on the preferential flow and solute distribution. The results agreed well with the experimental results, in terms of flow direction, preferential flow rate, and heterogeneous solute distribution. With an increase in curvature, the flow difference between the two outlets increases gradually. Increasing curvature can reduce the preferential flow and weaken the inhomogeneity of solute distribution. An increase of relative shear displacement decreases the pressure gradient and flow rate at the entrance of the two branch fractures, and thereby increases preferential flow and inhomogeneity of solute distribution. The results provide a basis and reference for further exploring the relationship between the geometric characteristics of fracture intersections and flow behaviors.</p>","PeriodicalId":12866,"journal":{"name":"Groundwater","volume":"62 5","pages":"681-689"},"PeriodicalIF":2.0,"publicationDate":"2024-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139546934","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hydrology: An Introduction, 2nd Edition","authors":"Wondwosen M. Seyoum","doi":"10.1111/gwat.13388","DOIUrl":"10.1111/gwat.13388","url":null,"abstract":"","PeriodicalId":12866,"journal":{"name":"Groundwater","volume":"62 5","pages":"667-668"},"PeriodicalIF":2.0,"publicationDate":"2024-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139604700","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"How We Survive: The Cost of (Ground)Water","authors":"Breanna Rivera Waterman","doi":"10.1111/gwat.13392","DOIUrl":"10.1111/gwat.13392","url":null,"abstract":"","PeriodicalId":12866,"journal":{"name":"Groundwater","volume":"62 3","pages":"341-342"},"PeriodicalIF":2.6,"publicationDate":"2024-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139605333","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"An Introduction to Hydraulic Testing in Hydrogeology","authors":"Javad Ashjari","doi":"10.1111/gwat.13389","DOIUrl":"10.1111/gwat.13389","url":null,"abstract":"","PeriodicalId":12866,"journal":{"name":"Groundwater","volume":"62 6","pages":"823-824"},"PeriodicalIF":2.0,"publicationDate":"2024-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139612936","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hydrogeology 101: Introduction to Groundwater Science and Engineering","authors":"Brady Ziegler","doi":"10.1111/gwat.13387","DOIUrl":"10.1111/gwat.13387","url":null,"abstract":"","PeriodicalId":12866,"journal":{"name":"Groundwater","volume":"62 5","pages":"665-666"},"PeriodicalIF":2.0,"publicationDate":"2024-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139618094","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Groundwater Week 2023","authors":"Mike Price","doi":"10.1111/gwat.13386","DOIUrl":"10.1111/gwat.13386","url":null,"abstract":"<p></p><p><b>Groundwater Week 2023</b> took place December 5–7, 2023 in Las Vegas, Nevada, and drew its largest attendance in the history of NGWA.</p><p>The annual event saw 6642 groundwater professionals take part, making it the biggest show in the Association history. Attendees came from 40 countries and all 50 states. The second largest show took place in 2006 with 6612 attendees.</p><p>“We're proud to have celebrated our 75th anniversary with the largest ever show attendance and thank everyone for making this historical milestone possible,” said NGWA CEO Terry S. Morse, CAE, CIC. “The groundwater industry is essential and, as such, extremely busy. We appreciate everyone taking time out of their busy schedules to be at Groundwater Week 2023.”</p><p>NGWA celebrated 75 years of serving groundwater professionals with a booth on the exhibit hall floor. NGWA past presidents and former staff members who helped the Association reach the milestone were in attendance to celebrate the occasion. A closing party, “Popcorn and Pilsners,” wrapped up Groundwater Week 2023 in the exhibit hall.</p><p>Attendees took in nearly 40 water well contractor workshops and visited 303 exhibitors on a crowded exhibit hall floor. Dozens of educational sessions in the Science &amp; Engineering Forum took place concurrently. There was a total of 81,600 square feet of exhibit space, the most in NGWA history.</p><p>The groundwater industry's top concern—workforce development—was covered in a variety of workshops, including a roundtable discussion on passing knowledge to the next generation. Two certified industry veterans and one younger professional shared what has worked for them over the years in recruiting, hiring, and maintaining their employees.</p><p>For the second consecutive year, two events took place to aid young and early-career groundwater professionals. A tour of the exhibit hall led by seasoned groundwater veterans took place explaining how the tools and machinery seen on the floor are used daily in the industry. There was also a coffee and continental breakfast where young people had a chance to meet and network with each other.</p><p>Chip Nelson of GEFCO/BAUER Equipment America Inc. in Conroe, Texas, was elected to the secretary position on the Manufacturers Section Board and will also serve as a director on the NGWA Board of Directors.</p><p>Jeffrey Davis, PE, CGWP, was elected to the vice chair position on the Scientists and Engineers Section Board and will also serve as a director on the NGWA Board of Directors.</p><p>David Traut, MGWC, CVCLD, of Traut Companies in St. Joseph, Minnesota, became the NGWA president.</p><p>For the first time, NGWA elected someone from the Manufacturers Section as president-elect— Eric Macias of LORENTZ U.S. Corp. in Slaton, Texas.</p>","PeriodicalId":12866,"journal":{"name":"Groundwater","volume":"62 1","pages":"6"},"PeriodicalIF":2.6,"publicationDate":"2024-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/gwat.13386","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139405716","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Water Rights in the United States: A Guide Through the Maze","authors":"W. Todd Jarvis","doi":"10.1111/gwat.13384","DOIUrl":"10.1111/gwat.13384","url":null,"abstract":"","PeriodicalId":12866,"journal":{"name":"Groundwater","volume":"62 4","pages":"501"},"PeriodicalIF":2.0,"publicationDate":"2024-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139385861","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}