Enhancement of internal tides on the continental slope of northeastern Arabian Sea during winter

Enhancement of internal tides on the continental slope of northeastern Arabian Sea during winter | 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 Enhancement of internal tides on the continental slope of northeastern Arabian Sea during winter Andrea Linus Pereira, Subeesh M. P, Jithin A. K, Navaneeth K. N, and 1 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-7754102/v1 This work is licensed under a CC BY 4.0 License Status: Under Review Version 1 posted 4 You are reading this latest preprint version Abstract Mooring observations and simulations from a high-resolution numerical ocean model were utilised to study the seasonality of internal tides in the northeastern Arabian Sea. Observations show intensification of internal tides in winter in the deep part of the eastern Arabian Sea compared to summer. Model simulation shows that the shelf-break and deep slope are the major generation sites. In winter, the model shows multiple generation sites along the continental slope compared to summer. Stratification shows that the shelf favours internal tide generation during summer compared to winter. However, stratification does not show a significant difference between winter and summer on the slope, whereas the position of the pycnocline varies according to the season. During winter (summer), the pycnocline deepens (shoals) and the width reduces (increases). Sensitivity experiments using a simple two-dimensional model show that, during winter, the deep thin pycnocline facilitates strong IT generation in the slope region. Internal tides (IT) Arabian Sea ROMS pycnocline stratification Full Text Additional Declarations No competing interests reported. Supplementary Files Supplementarydoc.pdf SupplementaryMaterial.docx Cite Share Download PDF Status: Under Review Version 1 posted Editorial decision: Revision requested 07 Oct, 2025 Editor assigned by journal 04 Oct, 2025 Submission checks completed at journal 03 Oct, 2025 First submitted to journal 30 Sep, 2025 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-7754102","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":525930063,"identity":"9b2bfb53-0ecb-4344-867c-ef29af39a2e7","order_by":0,"name":"Andrea Linus Pereira","email":"data:image/png;base64,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","orcid":"","institution":"Naval Physical \u0026 Oceanographic Laboratory","correspondingAuthor":true,"prefix":"","firstName":"Andrea","middleName":"Linus","lastName":"Pereira","suffix":""},{"id":525930065,"identity":"7a777b57-0cee-4e65-8c92-283630dc9867","order_by":1,"name":"Subeesh M. 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Observations show intensification of internal tides in winter in the deep part of the eastern Arabian Sea compared to summer. Model simulation shows that the shelf-break and deep slope are the major generation sites. In winter, the model shows multiple generation sites along the continental slope compared to summer. Stratification shows that the shelf favours internal tide generation during summer compared to winter. However, stratification does not show a significant difference between winter and summer on the slope, whereas the position of the pycnocline varies according to the season. During winter (summer), the pycnocline deepens (shoals) and the width reduces (increases). 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