Revisit the Regular Sea Water Temperature Drop in the Coral Reef Area off the Thermal Discharge outlet in Nanwan Bay

Revisit the Regular Sea Water Temperature Drop in the Coral Reef Area off the Thermal Discharge outlet in Nanwan Bay | 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 Revisit the Regular Sea Water Temperature Drop in the Coral Reef Area off the Thermal Discharge outlet in Nanwan Bay Septiyadi Irawan, Hwa Chien, Jian-Wu Lai This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-3378477/v1 This work is licensed under a CC BY 4.0 License Status: Under Review Version 1 posted 5 You are reading this latest preprint version Abstract The aim of this study is to revisit and examine the cooling mechanisms in the vicinity of the thermal discharge outlet in the western region of Nanwan Bay, in light of newly available data sets. These data sets consist of simultaneous in-situ measurements and remote sensing data collected during June-July 2016. The data sets include (a) in-situ data from ADCP, uCTD, and bottom temperature gauges, (b) remote sensing current fields from High Frequency Coastal radar, and (c) satellite SST from Himawari-8. The analysis focuses on the correlation between eddies and cold events, and explores the role of an alternative cooling water mechanism, namely internal wave shoaling. Cold events and cyclonic eddies were identified using indices derived from surface current vectors, including divergence, vorticity, strain, Okubo-Weiss, and IROS. Internal wave run-up events were identified when the propagation speed of the bore, which exhibited a sudden temperature drop, agreed with theoretical predictions. Over the 28-day measurement period, the study identified 16 cold events in the presence of cyclonic eddies and 9 events without eddies. Furthermore, the findings indicated that the phenomenon of internal wave run-up had been underestimated. In summary, the study suggests that eddies may explain roughly 55% of the likelihood of cooling events occurring in Nanwan Bay, while internal wave run-up accounts for approximately 31%. These results underscore the coexistence of both eddies and internal waves in this particular region. periodic water temperature drop internal waves run-up eddy-induced upwelling Full Text Cite Share Download PDF Status: Under Review Version 1 posted Editorial decision: Major revision 01 Nov, 2023 Reviewers agreed at journal 06 Oct, 2023 Reviewers invited by journal 05 Oct, 2023 Editor assigned by journal 04 Oct, 2023 First submitted to journal 22 Sep, 2023 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. 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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-3378477","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":238207864,"identity":"29efacb0-e645-40c7-a74e-390b0b2f04e3","order_by":0,"name":"Septiyadi Irawan","email":"","orcid":"","institution":"National Central University College of Earth Sciences","correspondingAuthor":false,"submittingAuthor":false,"prefix":"","firstName":"Septiyadi","middleName":"","lastName":"Irawan","suffix":""},{"id":238207865,"identity":"a034cfb3-69a6-432b-910e-d54903d62a21","order_by":1,"name":"Hwa Chien","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAuElEQVRIiWNgGAWjYBACAwYehgMMDDYQHg8JWtLgWiSI0gIEh0nQYs5+9uCBjzvO5/HPSGB88LaNoc7gAAEtlj15CQdnnrldLHEjgdlwbhuDBEEtBjd4DA7ztt1O3CCRwCbNC9RiRpSWv23nQFrYfxOvhbHtANgWZuK0nMkxONjblpw448zDZsk55yQk9xPUcvyM8YefbXaJ/e3JBz+8KbPhl2wgoAUJMILUEo6WUTAKRsEoGAVEAADgd0HcJC4XwgAAAABJRU5ErkJggg==","orcid":"https://orcid.org/0000-0002-0931-7050","institution":"National Central University College of Earth Sciences","correspondingAuthor":true,"submittingAuthor":false,"prefix":"","firstName":"Hwa","middleName":"","lastName":"Chien","suffix":""},{"id":238207866,"identity":"f12fe8a5-41d9-4d92-a831-bc2bbf838a6a","order_by":2,"name":"Jian-Wu Lai","email":"","orcid":"","institution":"National Academy of Marine Research","correspondingAuthor":false,"submittingAuthor":false,"prefix":"","firstName":"Jian-Wu","middleName":"","lastName":"Lai","suffix":""}],"badges":[],"createdAt":"2023-09-23 05:00:06","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-3378477/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-3378477/v1","draftVersion":[],"editorialEvents":[],"editorialNote":"","failedWorkflow":false,"files":[{"id":44368181,"identity":"35a79be5-d53e-4208-b1ac-7b8a43758175","added_by":"auto","created_at":"2023-10-10 15:04:09","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":1652725,"visible":true,"origin":"","legend":"","description":"","filename":"ManuscriptNanwanfinalv3.pdf","url":"https://assets-eu.researchsquare.com/files/rs-3378477/v1_covered_28626a03-3a0e-45d0-a470-118daea7fbd0.pdf"}],"financialInterests":"","formattedTitle":"Revisit the Regular Sea Water Temperature Drop in the Coral Reef Area off the Thermal Discharge outlet in Nanwan Bay","fulltext":[],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":false,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":false,"hideJournal":false,"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":"terrestrial-atmospheric-and-oceanic-sciences","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":false,"externalIdentity":"taoj","sideBox":"Learn more about [Terrestrial, Atmospheric and Oceanic Sciences](https://link.springer.com/journal/44195)","snPcode":"44195","submissionUrl":"https://submission.springernature.com/new-submission/44195/3","title":"Terrestrial, Atmospheric and Oceanic Sciences","twitterHandle":"","acdcEnabled":true,"dfaEnabled":true,"editorialSystem":"stoa","reportingPortfolio":"Springer Open","inReviewEnabled":true,"inReviewRevisionsEnabled":true},"keywords":"periodic water temperature drop, internal waves run-up, eddy-induced upwelling","lastPublishedDoi":"10.21203/rs.3.rs-3378477/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-3378477/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eThe aim of this study is to revisit and examine the cooling mechanisms in the vicinity of the thermal discharge outlet in the western region of Nanwan Bay, in light of newly available data sets. 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