Seismic Characterization of Subsurface Soils at Ikot Abasi, Nigeria Through Integrated Geotechnical Investigations

Seismic Characterization of Subsurface Soils at Ikot Abasi, Nigeria Through Integrated Geotechnical Investigations | 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 Seismic Characterization of Subsurface Soils at Ikot Abasi, Nigeria Through Integrated Geotechnical Investigations Kennedy Charles This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-4337324/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 Subsurface exploration programs comprising borehole drilling, sampling, in-situ testing and geophysical profiling were conducted at Ikot Abasi in southern Nigeria to comprehensively evaluate seismic properties of the near-surface soils. Laboratory index testing of soil samples provided classifications and insights into the complex stratigraphy consisting of interbedded sand, silt and clay deposited under fluvial-deltaic and marine conditions characteristic of the Niger Delta region. Shear wave velocity profiling utilizing multi-channel analysis of surface waves generated high-resolution small-strain shear modulus logs. Derived Vs30 values classified the site according to international codes. Empirical correlations developed between in-situ penetration resistance, grain characteristics and shear wave velocity closely matched field measurements, validating the regression models' capability to reliably estimate seismic response from index parameters. Simplified methods incorporating normalized penetration resistances and dynamic properties assessed the stability of soil strata against liquefaction. The systematic approach aligned with established protocols and furnished robust microzonation/design data. In conclusion, the integrated field and analytical investigation techniques enhanced geological comprehension and validated predictive seismic characterization of the heterogenous subsurface deposits at Ikot Abasi. subsurface exploration soil stratigraphy shear wave velocity site classification empirical correlations liquefaction assessment seismic characterization 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. 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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-4337324","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":304435681,"identity":"993df943-2787-41dd-b20b-fde617cc6294","order_by":0,"name":"Kennedy Charles","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAA6UlEQVRIiWNgGAWjYBACCRDB2MDAwMfewMAMEwUJENbCxnOAZC0SCURqkWzvPcDwc4ddPpvkG8PPBRU2DPztDWySM/BokeY5l8DYeybZsk06x1h6xpk0BokzB9gkN+DRIieRY8DM2MZswCadYyDN23aYwUAigU3yAT4t8m9AWuoN2CTPGP8mSou0BA9Iy2EDNgkeM4Qt+Bwm2ZNjwNjbdtyAjSetzJrnTBqPxJmDzZb4vC9x/IwBw8+2agN+9sObb/NU2MjxtzcfvNmDRwsQsP+A0BwGIJKHQKygan1ArMpRMApGwSgYYQAAd6U/tzjqdAkAAAAASUVORK5CYII=","orcid":"","institution":"","correspondingAuthor":true,"prefix":"","firstName":"Kennedy","middleName":"","lastName":"Charles","suffix":""}],"badges":[],"createdAt":"2024-04-28 09:54:08","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-4337324/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-4337324/v1","draftVersion":[],"editorialEvents":[],"editorialNote":"","failedWorkflow":false,"files":[{"id":63266161,"identity":"2300c0ce-535a-4ed9-863e-c8c723dca8ec","added_by":"auto","created_at":"2024-08-26 10:12:06","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":576171,"visible":true,"origin":"","legend":"","description":"","filename":"SeismicCharacterizationofSubsurfaceSoilsatIkotAbasi.pdf","url":"https://assets-eu.researchsquare.com/files/rs-4337324/v1_covered_81614952-b174-4c27-8b00-97c12387618f.pdf"}],"financialInterests":"No competing interests reported.","formattedTitle":"Seismic Characterization of Subsurface Soils at Ikot Abasi, Nigeria Through Integrated Geotechnical Investigations","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":"subsurface exploration, soil stratigraphy, shear wave velocity, site classification, empirical correlations, liquefaction assessment, seismic characterization","lastPublishedDoi":"10.21203/rs.3.rs-4337324/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-4337324/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eSubsurface exploration programs comprising borehole drilling, sampling, in-situ testing and geophysical profiling were conducted at Ikot Abasi in southern Nigeria to comprehensively evaluate seismic properties of the near-surface soils. 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