A study of the analytical solution for seawater intrusion in a coastal vertical heterogeneous unconfined aquifer

A study of the analytical solution for seawater intrusion in a coastal vertical heterogeneous unconfined aquifer | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Research Article A study of the analytical solution for seawater intrusion in a coastal vertical heterogeneous unconfined aquifer Jie Dong, Jinhui Liu, Yong Guan, Yanchun Liu, Yang Yu, Jia Wang, and 1 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-8010741/v1 This work is licensed under a CC BY 4.0 License Status: Posted Version 1 posted You are reading this latest preprint version Abstract Groundwater in coastal areas is a vital resource for various human activities. However, increasing water consumption and sea level rising pose significant threats to the safety and sustainability of this resource through seawater intrusion, which has become increasingly pronounced. This paper employs analytical methods to derive solutions for the length of steady-state saltwater wedge and the spatial distribution of saltwater-freshwater interface in a coastal vertical heterogeneous unconfined aquifer affected by seawater intrusion. A parameter sensitivity analysis is conducted to determine the influence of key hydrogeological parameters on the extension length of the saltwater wedge. The effectiveness of the analytical solutions obtained is subsequently verified through numerical simulations. The proposed solutions can be utilized to predict both the extension length of the saltwater wedge and the spatial distribution of the saltwater-freshwater interface resulting from seawater intrusion in coastal vertical heterogeneous unconfined aquifers. Coastal zone saltwater intrusion༛vertical inhomogeneous unconfined aquifer༛analytical solution༛saltwater-freshwater interface༛numerical simulation Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Posted Version 1 posted You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. We do this by developing innovative software and high quality services for the global research community. Our growing team is made up of researchers and industry professionals working together to solve the most critical problems facing scientific publishing. Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-8010741","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":542160397,"identity":"81dfff6f-ced2-43c7-9a75-2c8a3ca3a7e5","order_by":0,"name":"Jie Dong","email":"","orcid":"","institution":"Key Laboratory of Geological Safety of Coastal Urban Underground Space","correspondingAuthor":false,"prefix":"","firstName":"Jie","middleName":"","lastName":"Dong","suffix":""},{"id":542160398,"identity":"873e817b-9566-4795-9aaf-3afc0babc66d","order_by":1,"name":"Jinhui Liu","email":"","orcid":"","institution":"Hohai 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aquifer","fulltext":[],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":false,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":false,"hideJournal":true,"highlight":"","institution":"","isAcceptedByJournal":false,"isAuthorSuppliedPdf":true,"isDeskRejected":"","isHiddenFromSearch":false,"isInQc":false,"isInWorkflow":false,"isPdf":true,"isPdfUpToDate":true,"isWithdrawnOrRetracted":false,"journal":{"display":true,"email":"[email protected]","identity":"researchsquare","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":true,"externalIdentity":"","sideBox":"","snPcode":"","submissionUrl":"/submission","title":"Research Square","twitterHandle":"researchsquare","acdcEnabled":true,"dfaEnabled":false,"editorialSystem":"","reportingPortfolio":"","inReviewEnabled":false,"inReviewRevisionsEnabled":true},"keywords":"Coastal zone, saltwater intrusion༛vertical inhomogeneous unconfined aquifer༛analytical solution༛saltwater-freshwater interface༛numerical simulation","lastPublishedDoi":"10.21203/rs.3.rs-8010741/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-8010741/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eGroundwater in coastal areas is a vital resource for various human activities. However, increasing water consumption and sea level rising pose significant threats to the safety and sustainability of this resource through seawater intrusion, which has become increasingly pronounced. This paper employs analytical methods to derive solutions for the length of steady-state saltwater wedge and the spatial distribution of saltwater-freshwater interface in a coastal vertical heterogeneous unconfined aquifer affected by seawater intrusion. A parameter sensitivity analysis is conducted to determine the influence of key hydrogeological parameters on the extension length of the saltwater wedge. The effectiveness of the analytical solutions obtained is subsequently verified through numerical simulations. The proposed solutions can be utilized to predict both the extension length of the saltwater wedge and the spatial distribution of the saltwater-freshwater interface resulting from seawater intrusion in coastal vertical heterogeneous unconfined aquifers.\u003c/p\u003e","manuscriptTitle":"A study of the analytical solution for seawater intrusion in a coastal vertical heterogeneous unconfined aquifer","msid":"","msnumber":"","nonDraftVersions":[{"code":1,"date":"2025-11-13 04:59:01","doi":"10.21203/rs.3.rs-8010741/v1","editorialEvents":[{"type":"communityComments","content":0}],"status":"published","journal":{"display":true,"email":"[email protected]","identity":"researchsquare","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":true,"externalIdentity":"","sideBox":"","snPcode":"","submissionUrl":"/submission","title":"Research Square","twitterHandle":"researchsquare","acdcEnabled":true,"dfaEnabled":false,"editorialSystem":"","reportingPortfolio":"","inReviewEnabled":false,"inReviewRevisionsEnabled":true}}],"origin":"","ownerIdentity":"7ed0eceb-5145-4ab3-b9b2-feb9568b2061","owner":[],"postedDate":"November 13th, 2025","published":true,"recentEditorialEvents":[],"rejectedJournal":[],"revision":"","amendment":"","status":"posted","subjectAreas":[],"tags":[],"updatedAt":"2026-02-10T23:53:57+00:00","versionOfRecord":[],"versionCreatedAt":"2025-11-13 04:59:01","video":"","vorDoi":"","vorDoiUrl":"","workflowStages":[]},"version":"v1","identity":"rs-8010741","journalConfig":"researchsquare"},"__N_SSP":true},"page":"/article/[identity]/[[...version]]","query":{"redirect":"/article/rs-8010741","identity":"rs-8010741","version":["v1"]},"buildId":"8U1c8b4HqxoKbykW_rLl7","isFallback":false,"isExperimentalCompile":false,"dynamicIds":[84888],"gssp":true,"scriptLoader":[]}