Dynamic Population Vulnerability Assessment and mapping towards High Sea Surge using Intercept Survey Score in GIS for Grand Bay village, Mauritius

Dynamic Population Vulnerability Assessment and mapping towards High Sea Surge using Intercept Survey Score in GIS for Grand Bay village, Mauritius | 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 Dynamic Population Vulnerability Assessment and mapping towards High Sea Surge using Intercept Survey Score in GIS for Grand Bay village, Mauritius Abdel Isker Mudhawo, ESM Suresh This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-6730579/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 Mauritius island of the Indian Ocean, is not free from tsunami waves generated by converging tectonic plates. On 26th December 2004, tsunamis generated from the Sumatra Andaman earthquake caused a minor but noticeable inundation. The island is mainly dependent on its sandy beaches and blue lagoons as assets well publicized for the tourism sector. Eventually, the coastal region rapidly developed its infrastructures with major investments in hotels and luxurious villas. However, the major Mauritian economic spine becomes vulnerable towards significant sea surges occurring from cyclonic conditions or worst, a potential tsunami. This research study investigates upon the possible threat of tsunami waves striking the northern part of Mauritius region namely, Grand Bay coastal village. Emphasis was laid upon the vulnerability assessment of human lives due the dynamic flow of population with respect to time. The methodology includes digitalisation of the Grand Bay region with existing updated buildings, using the QGIS software from high resolution satellite raster images, followed by the input of geospatial and relative attributes data. Tsunamis sources of both Makran and Sumatra regions were considered with generations of waves from 4 metres to 16 metres reaching the Grand Bay coast. These were analysed in QGIS by weightage of spatial attributes set by professional votes through Intercept Surveys. Maps generated by QGIS showed an increase in vulnerability of human lives with higher probable casualties during weekends at Grand Bay. Around 40000 people are at risk for an 8m wave tsunami strike. Apart from delocalisation of the existing infrastructures, soft and hard solutions were proposed for specific regions to minimize the impact of a least tsunami threat. Tsunami Intercept Survey Score QGIS Dynamic population Vulnerability Mapping 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-6730579","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":499253164,"identity":"ddb93bf5-ff1f-4703-b2f6-36a2efcf66b1","order_by":0,"name":"Abdel Isker Mudhawo","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAw0lEQVRIiWNgGAWjYJACaRDBz8BgQKIWyQaStRgcIFYL/7QzhrcLag7LGd9I3rqBocaOQXdGAn4tErdzjK1nHDtsbHYjrewGw7FkBrMbBLQw3M4xk+Zhu5247UaO2Q0GtgOEtciDtfy7nbh5BkjLPyK0GIC08LbdTtwgAdTC2EaEFsPbacXWvH3/jSXOPCu7kdiXzGN25gF+LXK3kzfe5vmWJsffnrztxodvdnJmxwnYggqAinlIUT8KRsEoGAWjAAcAAH/gRNPZc/o3AAAAAElFTkSuQmCC","orcid":"","institution":"Université des Mascareignes","correspondingAuthor":true,"prefix":"","firstName":"Abdel","middleName":"Isker","lastName":"Mudhawo","suffix":""},{"id":499253166,"identity":"0c06555f-9450-4c0f-991d-706ef603baf0","order_by":1,"name":"ESM Suresh","email":"","orcid":"","institution":"National Institute of Technical Teachers Training and Research","correspondingAuthor":false,"prefix":"","firstName":"ESM","middleName":"","lastName":"Suresh","suffix":""}],"badges":[],"createdAt":"2025-05-23 07:53:21","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-6730579/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-6730579/v1","draftVersion":[],"editorialEvents":[],"editorialNote":"","failedWorkflow":false,"files":[{"id":104780780,"identity":"822159e1-0e29-43f7-9552-41984e997db9","added_by":"auto","created_at":"2026-03-17 07:53:56","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":1795578,"visible":true,"origin":"","legend":"","description":"","filename":"VariablepopulationvulnerabilitywithGIS01.pdf","url":"https://assets-eu.researchsquare.com/files/rs-6730579/v1_covered_8b168fd5-4d10-4bf0-88bc-978e25b451d6.pdf"}],"financialInterests":"No competing interests reported.","formattedTitle":"\u003cp\u003eDynamic Population Vulnerability Assessment and mapping towards High Sea Surge using Intercept Survey Score in GIS for Grand Bay village, Mauritius\u003c/p\u003e","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":"Tsunami, Intercept Survey Score, QGIS, Dynamic population, Vulnerability Mapping","lastPublishedDoi":"10.21203/rs.3.rs-6730579/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-6730579/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eMauritius island of the Indian Ocean, is not free from tsunami waves generated by converging tectonic plates. 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