Flexural Backstripping of the East Sea in Response to Quaternary Glaciation Mean Sea Level Fluctuations

Flexural Backstripping of the East Sea in Response to Quaternary Glaciation Mean Sea Level Fluctuations | 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 Article Flexural Backstripping of the East Sea in Response to Quaternary Glaciation Mean Sea Level Fluctuations Masume Akbari, Hojjat Kabirzadeh, Youn Soo Lee, Jeong Woo Kim, and 2 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-7674077/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 The paleoceanographic evolution of the East Sea following large Quaternary glaciation mean sea level (MSL) fluctuations is reconstructed using three-dimensional flexural backstripping with spatially variable effective elastic thickness (Te) values. Post Pleistocene sediment loads are removed before quantifying the lithospheric response to water load variations and to calculate basement uplift and peripheral subsidence. Model results indicate that MSL fall of 1830- 1912 m could have produced flexural uplifts of 519-538 m in the Ulleung Basin, sufficient to generate shallow-marine to subaerial conditions. These sea-level reductions would have generated more than 130 m of flexural uplift in the Korea Strait, potentially leading to its temporary closure, with a minimum MSL fall of ~150 m required for this isolation. Such closure likely reduced water exchange, lowered surface salinity, inhibited deep-water ventilation, and created low-oxygen conditions, consistent with the regional fossil records in the area. These results demonstrate that MSL changes critically influenced basin evolution and highlight the sensitivity of semi-enclosed basins to sea-level fluctuations. Earth and environmental sciences/Climate sciences Earth and environmental sciences/Ocean sciences Earth and environmental sciences/Solid earth sciences Flexural backstripping East Sea (Japan Sea) paleo-bathymetry Korea Strait sea-level fluctuations water load removal 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-7674077","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Article","associatedPublications":[],"authors":[{"id":592156216,"identity":"73e022b7-9f04-4937-96b8-034fd4ff7d60","order_by":0,"name":"Masume 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