01 Jul 2021

01 Jul 2021

Review status: this preprint is currently under review for the journal ESSD.

Last interglacial sea-level proxies in the Korean Peninsula

Woo Hun Ryang1, Alexander R. Simms2, Hyun Ho Yoon3, Seung Soo Chun4, and Gee Soo Kong5 Woo Hun Ryang et al.
  • 1Division of Science Education and Institute of Science Education, Jeonbuk National University, Jeonju, Jeonbuk 54896, Republic of Korea
  • 2Department of Earth Science, University of California, Santa Barbara, California 93106, U.S.A.
  • 3Geological Research Division, Korea Institute of Geoscience and Mineral Resources (KIGAM), Daejeon 34132, Republic of Korea
  • 4Faculty of Earth System & Environmental Sciences, Chonnam National University, Gwangju 61186, Republic of Korea
  • 5Petroleum and Marine Research Division, Korea Institute of Geoscience and Mineral Resources (KIGAM), Daejeon 34132, Republic of Korea

Abstract. Like most of the world’s coastlines, the Korean Peninsula experienced higher-than-present sea levels during the Last Interglacial (LIG) otherwise known as Marine Isotope Stage (MIS) 5e. However, the expression of that highstand in sea levels differs across the eastern and western Korean Peninsula. The active east coast of the Korean Peninsula is characterized by broad uplifted marine terraces, while the stable west coast is characterized by tidal flats and rias. In this study, we used a standardized database template to review and extract the existing constraints on LIG sea levels along both the east and west coasts of the Korean Peninsula. A total of 62 LIG constraining data points were compiled including 34 sea-level indicators, 22 marine limiting records, and 6 terrestrial limiting records. The ages from these data points are based on 61 optically stimulated luminescence (OSL) measurements and 1 paleomagnetic-based age. Along the uplifted east coast, LIG sea-level indicators based on marine terraces are at elevations ranging from +9 to +32 m. The uplifted marine terraces are cut or otherwise deformed by faults developed under a compressional regime due to backarc closing of the East Sea since the early Pliocene. As a result, tectonic uplift likely contaminates the elevation of the east coast LIG shorelines. On the contrary, LIG sea-level constraints on the west coast of the Korean Peninsula are found at heights of between +2 and +5 m and include marine and terrestrial limiting records as well as true sea-level indicators. The LIG sea-level constraints along the west coast of the Korean Peninsula are likely uncontaminated by vertical movement or experienced minor subsidence during the Quaternary.

Woo Hun Ryang et al.

Status: open (until 26 Aug 2021)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on essd-2021-205', Anonymous Referee #1, 06 Jul 2021 reply
  • EC1: 'Comment on essd-2021-205', Colin V. Murray-Wallace, 23 Jul 2021 reply

Woo Hun Ryang et al.

Data sets

Last Interglacial Sea Levels within the Korean Peninsula Ryang, Woo Hun; Simms, Alexander R.

Woo Hun Ryang et al.


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Short summary
This work is part of the World Atlas of Last Interglacial Shorelines (WALIS) whose aim is to construct a database of Last Interglacial (LIG) relative sea level (RSL) indicators from across the globe. This paper reviews the LIG sea-level constraints from the Korean Peninsula entered into the online WALIS database. This paper including the dataset will contribute to reconstructing global LIG sea-level changes and regional LIG RSL in the Korean Peninsula.